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Hi everyone.



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So now it's actually at the our own logic to this enclave Smurfit.



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First of all it's actually create a body of the.



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And the name of this variable is going to be actually the address



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value by assignment operator.



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EDT address that get text get text that to a strange semicolon.



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Right.



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So we are actually getting the value of these edits.



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This edit the address and we are assigning the value to this address value.



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Let's create a variable of type Boolean here.



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So boolean and the name of this variable is going to be is geocoding.



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So first let me actually tell you what is a joke coding coding.



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Right.



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So let me actually uncapitalized this.



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See assignment operator.



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True.



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So what is geocoding.



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Geocoding is the process of converting the latitude and longitude coordinates to an actual address value



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that is actually human readable right.



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So let me repeat again the geocoding process is going to convert the latitude and longitude coordinates



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to our human readable text.



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So that's called geocoding.



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And we created a boolean value of N here.



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The name is is geocoding.



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And initially I was saying the value true to this value.



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So now we need a variable in order to hold that destination location address.



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So let's scroll to the top here.



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This is going to be an instance variable.



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So let's actually declare it inside the main activity class so here below this declaration of this button



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I can actually say private's.



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And by the way it's better to actually declare your value but as these user interface components are



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actually as private so that it is only private to the main activity class so private.



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And the name of this first you need to specify the data type of this value which is going to be streamed



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the name of this rally is going to be destination destination location address.



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And let's actually initially assigned an empty string value to this variable.



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So let's scroll down here.



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And here I can actually create an if statement in say this unclick in effect and after this line of



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code that actually creates this is geocoding value.



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I can actually say if address so address value I am referring to this added value.



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That's actually the way to say it is not equal to.



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So I need to pass I need to put this ban here.



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This is called bank right.



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Not not.



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Operator dot equals destination location address so why am I checking for this condition here.



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I am actually taking that if the old old adage that the user has entered is actually equal to the destination



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location address that is already actually entered.



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So let me ask you to show you the emulator.



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So here it is our emulator right.



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And if the is it actually enters an address here and if the user actually clicks on this get the data



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button the user is going to actually get some data.



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Ok for example the distance between the current location and the destination location and the actually



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remained time in order to get there.



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Actually the time left in order to get to that destination location if the user actually wants to click



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on this button again this statement is not going to be executed because the address value located the



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value that is inside of this text is actually completely the same as the value that is assigned to this



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destination location address.



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So we're going to actually assign a value to the initial location address inside the if statement.



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So that's what I am actually taking for this condition.



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I don't want this actually process to be executed actually two times.



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I just want the new address to be executed only once.



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And if the user gets the address gets these that actually gets the data.



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And that's going to be actually enough for that specific address.



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OK.



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So I don't want the address value to be equal to the destination location an address.



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So now not is that the address value is the value of this.



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It is the address.



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OK.



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So let's actually go inside the standard studio.



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Let's open and close this if statement by using this curly braces.



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So let's see what's what you're going to do here.



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Inside each statement.



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First of all are you going to actually sign that this nation location address to the address value right.



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Destination location address assignment operator at this value so you can see that we are assigning



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this destination location at least that is the value if it is not equal here.



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All the industry is going to execute the lines of code inside this if statement.



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Right.



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So this is the first thing that you want to do.



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And now you want to actually create an object of type geocoder in order to convert the latitude and



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longitude coordinates to a human readable address OK to a human readable actually de-value so that the



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user can see what's going on here.



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For example the amount of time the distance so I can actually say geocoder geocoder is a class inside



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that.



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And with that location package geocoder and the name is going to be geocoder the name of the variable



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assignment operator new.



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Right.



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Geocoder semicon.



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So here we actually created this object of type geocoder and we assigned to this object to this valuable



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type geocoder.



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So now this variable halts this object right.



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And as you can see inside Apprentice's of this constructed of these geocoder we must pass the context.



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The context is main activity that this.



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So instead of actually passing main activity that is we can't just say good application context right.



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It's also possible to pass good application context and it's going to automatically specify the context



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so the context is main activity right.



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So that's it and now because the process of geocoding are actually our latitude and longitude coordinates



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can actually fail.



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We need to put our codes.



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We need to put the process of Dakotan inside a try catch block so that they can actually catch the exception.



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Otherwise our application is it may actually crash and we may have not be able to do anything.



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So let's actually create a try catch plug so try create a try and then here at the after the curly brace



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of this Troy.



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Just leave it here catch inside the practice of this catch just tape in here.



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Acception exception and the name is E and open and close.



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This catch like by using these curly braces I just they've been here.



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That print stack trace it can actually display somebody who's going out with somebody to the like so



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that you can actually see what's been thrown.



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So let's go inside the triple judge.



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So let's create a list list and let's actually put a pair of angle brackets at inside angle brackets.



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You want to specify the values that you want to put and should able to specify the data type of the



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values that you want to put inside the list.



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So now you may ask what is that list list is like an army list is not a class.



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It is actually an interface and it is actually like an ad a but with more features.



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OK we can do lots of things with lists.



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So just look at this list as an adult.



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OK.



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So list and just put angle brackets inside the angle brackets unless specified that date or type of



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the values that are you want to put inside this list which is going to be a fake address.



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Look at this here address is inside and read that location package.



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So just put it here address and the name of this list is going to be.



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For example my addresses my addresses assignment operator.



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So notice that because this is actually the list and this is an interface which can not create actually



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an instance of type least by using the new keyboard.



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It is not possible because this is actually an interface.



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So let's see how we can initialize this interface.



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So now it's time to actually forward to our geocoder object dots.



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Let's actually for this method get from location name you can this you can see this one here and it's



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actually set like this one and then person until January worth as you can see there are two versions



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of this method here.



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The first version that may actually show you again the first version actually accepts two arguments.



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Actually the location name.



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So it is going to be the address.



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Right.



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The user enters the address inside as it takes the first actually the EDT address name right.



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It is the address the user enters the address inside that field.



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And the second argument is the max results.



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So it's going to actually turn that some Max resolve some results actually from the address for example



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it's going to actually say you are here you are actually to somebody else.



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So it's going to give you the most accurate addresses and the want five addresses.



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For example 10 addresses or 20 addresses you can specify that here by using this Max results actually



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argument.



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Look at this second version of this.



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If you have the option to actually pass the address name.



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You have the option to pass the max odds.



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You have the option to actually pass the lower left latitude you have the option to pass the lower left



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longitude of the upper right latitude and longitude.



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So for this application we just want to use the first version of this method is actually really good



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and it's enough.



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OK we don't have to actually pass the latitude longitude.



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We just want to give our application the address and the address and the application is going to just



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give us OK.



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So you are here is going to actually determine your current location and it's going to tell you that



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the destination address is there and then it's going to give you the distance the meters to get there



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and it's going to give you the time that it is going to take to get there.



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So now inside Apprentice's I can actually specify the location in which she is going to be destination



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location address.



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Right.



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Come on at the max results.



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I've been to actually only get four addresses so in this way we are initializing our list right.



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Our list is going to have four accurate addresses the most.



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Actually actually the most accurate addresses that are going to be only four and we can see that by



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using by passing this address is going to give us those results.



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So this is our list.



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My address is Lydney actually create a new line here so that you can see what's going on here.



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Now let me create an if statement so if my addresses actually is not equal to non If this list actually



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has some addresses and it is not equal to null.



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Then we can actually go inside the if statement and we can't say so remember that I told you that the



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geocoder is going to actually convert that latitude and longitude coordinates to actually a human readable



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text so that they can actually see what's going on here.



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And now I want to actually pass the latitude and longitude but first I need to get the latitude and



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longitude how we can do that.



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Let's actually create a value of the double and the name is going to be latitude latitude assignment



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operator.



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And here I can refer to this least my addresses.



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OK that's good.



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So I want to get the value.



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The first address actually that is inside the index 0 0 0.



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Notice that we get four addresses so I want to get the address that is inside the index 0 dots get latitude.



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I am actually calling this get latitude on the address inside the index zero of this my address list.



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So in this way we get this latitude.



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Let's actually create another variable of that double longitudes assignment operator my addresses that



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get zero dot get longitude right.



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Semicolon.



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Now let's actually create a variable of type location here.



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I'm going to actually let you know what am I creating this location variable but for now I just create



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this value.



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And then I'll tell you what's going on here.



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Exactly.



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So location and the name of this value and it's going to be address location address location address



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assignment operator new location new location and you need to pass an argument to this actually constructed



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of this location class.



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So let's actually just going to be off base 3 and so just pass the value.



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So let me show you what is the data type so location and you can see that it says street provider.



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So we need to provide and should if you need to specify a provider which is of type string.



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So I'll tell you it's not that important but it is called a provider is so that we can actually use



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it later.



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But for now in this application we are not going to use it so just pass the procedure here because of



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the history.



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I can't say my destination.



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OK.



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It doesn't really matter which value it is just past Ossining value my destination semicolon right now



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that I have this location variable here which its name is location address.



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I can say location address that set latitude and I have this latitude here right that I get from this



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of this list so I can pass the latitude here latitude location address that set longitude and I can



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pass the longitude here.



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Right.



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So I created a variable of type location here and I passed the profiler here and I said that the latitude



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is this one.



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OK.



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And I said that the longitude is this one so I get the latitude and longitude from this my addresses



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are from the first index the value that is under its index of this list and a past the latitude and



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longitude of that address to the actually latitude and longitude property or instance variable of this



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location.



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Address right is valuable.



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So now what am I going to do here.



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I actually created.



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This right here BELOFF take location because we have another class in our project called Paxi manager



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the taxi manager class is our model.



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What is the model the model is going to actually provide that data for us.



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OK.



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We cannot actually continue using the application without the model the model is the data source.



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Without the data source the application doesn't have a data source and it is boring.



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Right.



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So let's actually scroll to the top.



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Let's create a value of piked amount of type Paxi manager.



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So now here after this line of code here in line number actually 41 inside the main activity class I



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can actually say private taxi manager private taxi manager and the name of this rally is going to be



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taxi manager Senechal all right let's go inside is uncreate Lifford here unless actually initialize



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the taxi manager.



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After this line of code that actually sets the listener on the spot it is Uncle close.



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So I can't say taxi manager I can leave it to this variable taxi manager new taxi manager semi-colon.



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So now I created a variable Actually I created the of the taxi manager here and I assigned this object



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of Tove taxi manager to this valuable light.



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So now this taxi managed valuable holds this object of a Pepsi manager.



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So hopefully that makes sense.



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Now let's scroll down here.



236

00:16:01,040 --> 00:16:07,120

And here in this statement that I am actually taking for it not lability of this my address is here



237

00:16:07,970 --> 00:16:13,850

after this line of code that actually sets the longitude of this location at least I can say taxi manager



238

00:16:13,880 --> 00:16:20,570

I can refer to this rowdier but that holds the object of the taxing manager right that sets destination



239

00:16:20,570 --> 00:16:22,910

location location.



240

00:16:22,910 --> 00:16:25,730

Address right.



241

00:16:25,740 --> 00:16:27,370

So what did I do here.



242

00:16:27,600 --> 00:16:33,870

I actually passed the location address as an argument to this method that I created inside the taxi



243

00:16:33,870 --> 00:16:34,500

manager class.



244

00:16:34,500 --> 00:16:35,950

This is actually an instance method.



245

00:16:35,950 --> 00:16:41,940

So it is going to be called on an instance of type actually Paxi manager class.



246

00:16:41,940 --> 00:16:47,420

So taxi manager is an instance of the taxi manager class that sets destination location is going to



247

00:16:47,420 --> 00:16:49,740

actually set the destination location.



248

00:16:49,740 --> 00:16:53,540

So we passed this location address as an argument to this effect.



249

00:16:53,670 --> 00:16:57,040

So it's going to assign this location address to the.



250

00:16:57,210 --> 00:17:00,690

Actually this initial location instance variable of the taxi manager class.



251

00:17:00,700 --> 00:17:05,830

So let's go to the taxi manager class here let me show you this your destination location right.



252

00:17:05,880 --> 00:17:07,060

This is an instance variable.



253

00:17:07,080 --> 00:17:09,430

And if you have the Smurfette here we created ourselves.



254

00:17:09,500 --> 00:17:11,250

This thing is set this initial location.



255

00:17:11,280 --> 00:17:16,260

So here this if it accepts an argument of a location so it's going to actually assign that argument



256

00:17:16,680 --> 00:17:19,340

to the destination location instance valuable.



257

00:17:19,350 --> 00:17:21,470

So let's go to the let's go back to the man with the class.



258

00:17:21,480 --> 00:17:25,180

So that's what we are doing here we are passing the location address as an argument to these men.



259

00:17:25,350 --> 00:17:31,750

And it's going to assign this location address to the destination location instance variable of this



260

00:17:31,770 --> 00:17:33,320

taxi manager.



261

00:17:33,330 --> 00:17:35,130

That's right.



262

00:17:35,190 --> 00:17:36,330

So that's it.



263

00:17:36,360 --> 00:17:39,810

Now let's see how we can use this object this model.



264

00:17:39,960 --> 00:17:40,660

Right.



265

00:17:40,800 --> 00:17:44,020

So now let's scroll down here.



266

00:17:44,280 --> 00:17:50,760

And after the end in curly brace of this statement here right this statement that we created here inside



267

00:17:50,770 --> 00:17:57,600

is unclear if it goes to him for actually not being equal of this address value and this distillation



268

00:17:57,720 --> 00:18:01,100

destination location address is valuable here.



269

00:18:01,110 --> 00:18:08,300

After the end in curly brace of this statement now I want to create another Actually I want to actually



270

00:18:08,330 --> 00:18:09,320

put some logic here.



271

00:18:09,320 --> 00:18:14,580

I want to add some lines of code here inside this on collegium efforts so before the end incredible



272

00:18:14,590 --> 00:18:19,090

case of the Smurfette Let's actually see what what we are going to do here.



273

00:18:20,440 --> 00:18:25,090

So because so you are already familiar with this because you want to actually access the user's current



274

00:18:25,090 --> 00:18:25,920

location.



275

00:18:26,110 --> 00:18:30,820

We must ask the user for the permission in order to access the user's location.



276

00:18:30,820 --> 00:18:36,070

So let's create a valuable for that end and the name of this rally but it's going to be permission check



277

00:18:36,640 --> 00:18:45,970

permission check assignment operator and I can't say context compact context compact that check self



278

00:18:45,970 --> 00:18:47,140

permission.



279

00:18:47,140 --> 00:18:52,280

So for the first argument we need to pass the context so I can just say good application context.



280

00:18:52,310 --> 00:18:53,460

Come on.



281

00:18:53,860 --> 00:18:57,070

And as the second argument we need to specify the permission.



282

00:18:57,220 --> 00:19:00,050

So I can't say manifest that permission.



283

00:19:00,920 --> 00:19:04,760

That course location access course location.



284

00:19:04,760 --> 00:19:10,810

So let me actually create a new line here so that you can actually see the entire effort here.



285

00:19:11,180 --> 00:19:15,550

So now that we have the permission check let's create and if statements.



286

00:19:15,860 --> 00:19:19,340

OK first let's actually put a semicolon here at the end of our statement.



287

00:19:19,460 --> 00:19:27,830

And now let's create an if statement so if permission check is equal to package manager that permission



288

00:19:27,830 --> 00:19:32,990

granted the Capitol right that permission granted or just need to open and close.



289

00:19:32,990 --> 00:19:37,460

This move this statement by using the school libraries so you can see that if the permission check is



290

00:19:37,460 --> 00:19:43,880

equal to a package manager that permission granted means that we have the permission to access the user's



291

00:19:43,880 --> 00:19:44,600

location.



292

00:19:44,780 --> 00:19:45,230

OK.



293

00:19:45,440 --> 00:19:51,350

So let's create an exit statements or else it just means that we don't have to actually get permission



294

00:19:51,350 --> 00:19:52,730

to access the user's location.



295

00:19:52,730 --> 00:19:58,460

So let's request that let's ask the user to give us the permission to to access the location.



296

00:19:58,460 --> 00:20:00,200

So let me paste this line of code here.



297

00:20:00,230 --> 00:20:05,600

As you can see I paste this I pasted this line of work here that says activity can pass that request



298

00:20:05,600 --> 00:20:06,380

permissions.



299

00:20:06,470 --> 00:20:11,340

First we need to pass the context main activity that this and as the second argument we need to specify



300

00:20:11,350 --> 00:20:13,350

to actually the permission as an addict.



301

00:20:13,460 --> 00:20:15,360

So new streams A.



302

00:20:15,520 --> 00:20:21,680

And I just passed the first actually the first value this is going to have only one value which is going



303

00:20:21,680 --> 00:20:26,920

to be accessed course location and at a permissions right because you want to have only one actually



304

00:20:26,970 --> 00:20:31,640

permission in this application you won't be able to actually access one.



305

00:20:31,680 --> 00:20:33,890

A dangerous mission for example.



306

00:20:33,890 --> 00:20:39,230

So I just passed this value here to manifest that permission that the access course location.



307

00:20:39,470 --> 00:20:41,340

And here it is actually that request code.



308

00:20:41,480 --> 00:20:43,360

So it is ok to be number one.



309

00:20:43,610 --> 00:20:44,300

Right.



310

00:20:44,650 --> 00:20:50,650

And now that we have actually requested the user to give us the permission here before this one image



311

00:20:50,660 --> 00:20:56,990

that I can actually say for example takes the distance that it takes two coats.



312

00:20:57,020 --> 00:21:04,380

And here I can say this up is not allowed is not allowed.



313

00:21:05,190 --> 00:21:15,800

To access the location right now let's actually go inside this if statement so what happens if the user



314

00:21:15,850 --> 00:21:18,820

actually allows us to access the location.



315

00:21:18,820 --> 00:21:22,300

So now we want to put that logic here inside this statement.



316

00:21:22,330 --> 00:21:27,910

So for that we need to put we need to actually to use the main entry entry point in order to access



317

00:21:27,910 --> 00:21:32,650

that user's location which is actually called fuse location provider API.



318

00:21:32,650 --> 00:21:40,220

This fuse location provider API is actually the main entry point in order to access the user's location.



319

00:21:40,330 --> 00:21:54,150

So let's actually name it the same fuse actually fuse location provider API write assignment operator



320

00:21:54,610 --> 00:22:04,200

and and here I can actually say location services that used location services that fuse location API



321

00:22:04,810 --> 00:22:06,110

right semicolon.



322

00:22:06,240 --> 00:22:08,370

So it may actually create a new line here.



323

00:22:09,740 --> 00:22:11,450

So that they can see what's going on here first.



324

00:22:11,570 --> 00:22:20,210

We created a bit of type fuse location approach by the API here and we assigned this value to this valuable



325

00:22:20,600 --> 00:22:22,730

location services that fuse location API.



326

00:22:22,730 --> 00:22:24,950

So now we have that main entry point.



327

00:22:25,130 --> 00:22:30,380

So now I can say so now we can actually access the user's location.



328

00:22:30,380 --> 00:22:31,070

So lets do that.



329

00:22:31,070 --> 00:22:37,280

So it lets you to create a variable of the location and the name of this value is going to be user current



330

00:22:38,120 --> 00:22:41,790

location assignment operator.



331

00:22:42,100 --> 00:22:48,800

And here you can see fuse location pro-white API that gets last location.



332

00:22:49,090 --> 00:22:49,900

OK good.



333

00:22:49,950 --> 00:22:55,610

Lastly location and we need to pass the Google API client to the Smurfette So we have an instance of



334

00:22:55,610 --> 00:22:57,660

that Google client here semicolon.



335

00:22:57,800 --> 00:22:58,600

So thats it.



336

00:22:58,850 --> 00:23:05,930

And this way we can actually access the users actually last location and we can assign it to this valuable



337

00:23:05,930 --> 00:23:07,960

user current location.



338

00:23:07,970 --> 00:23:12,350

So now you want to actually create an if statement and I want to let you know about it.



339

00:23:12,380 --> 00:23:16,610

A very important point about geocoding in Android.



340

00:23:16,610 --> 00:23:23,120

So after this line of code that actually gets the use that was current location I can say if user current



341

00:23:23,120 --> 00:23:28,100

location is not equal to null OK.



342

00:23:28,610 --> 00:23:32,050

And this is actually an ontological OPERATOR Right.



343

00:23:32,270 --> 00:23:38,250

Is geocoding So here this is very important let's actually be open and close this if statement by using



344

00:23:38,250 --> 00:23:41,650

these curly braces and often incredibly is followed by a closing curly brace.



345

00:23:41,670 --> 00:23:48,150

So here I am actually thinking that if this use of current location is not equal to not and is geocoding



346

00:23:48,420 --> 00:23:55,410

is geocoding here means that if the value of this is geocoding variable is true and the user is actually



347

00:23:55,420 --> 00:23:56,170

to caught in it.



348

00:23:56,190 --> 00:23:56,680

Right.



349

00:23:56,910 --> 00:23:58,920

So there is a problem here.



350

00:23:59,010 --> 00:24:03,450

Let's actually scroll to the top here and see that we have this try catch block right.



351

00:24:03,480 --> 00:24:08,870

So here we are actually change for the condition for the process of coding.



352

00:24:08,880 --> 00:24:12,980

So what happens if geocoding actually goes wrong.



353

00:24:13,050 --> 00:24:19,640

OK if the user can actually cannot for example the location of the user cannot be of the address of



354

00:24:19,740 --> 00:24:22,080

for example the address that that the user has entered.



355

00:24:22,110 --> 00:24:26,420

For example in that case that address cannot be for example found right.



356

00:24:26,490 --> 00:24:28,590

The geocoding could go wrong.



357

00:24:29,020 --> 00:24:31,890

So we need to go inside is Cheche plug.



358

00:24:32,070 --> 00:24:37,890

And we need to say is geocoding false right semicolon.



359

00:24:38,090 --> 00:24:39,460

So inside it is catchable.



360

00:24:39,590 --> 00:24:46,950

We must assign the value falls to this is Joe geocoding so that the application is not going to code.



361

00:24:47,060 --> 00:24:52,970

If the geocoding is actually going wrong so that it's not going actually it's the device's battery it



362

00:24:52,970 --> 00:24:57,520

is very important because it is very it is a very hard working process.



363

00:24:57,530 --> 00:25:00,100

It's going to be used as a battery.



364

00:25:00,110 --> 00:25:02,990

It is going to it the device is battery.



365

00:25:02,990 --> 00:25:07,430

So here you can see that initially the assigned value truth is valuable.



366

00:25:07,430 --> 00:25:11,930

So whenever they use it actually clicks on that button whenever they use that actually touches that



367

00:25:11,930 --> 00:25:12,380

button.



368

00:25:12,380 --> 00:25:14,770

Get the date of this if it is going to be caught.



369

00:25:14,780 --> 00:25:19,000

So this means that the value true is going to be assigned to this is Joe geocoding.



370

00:25:19,190 --> 00:25:24,950

But if the geocoding goes wrong it can actually execute this catch block and it's going to assign the



371

00:25:24,950 --> 00:25:30,650

value falls to these is geocoding valuable so that it's not going to actually court anymore.



372

00:25:30,820 --> 00:25:31,440

OK.



373

00:25:31,500 --> 00:25:35,060

And as a result it's not going to actually eat the use that as battery.



374

00:25:35,060 --> 00:25:41,490

So now let's actually scroll down here and here is for this statement We are thinking that if that is



375

00:25:41,540 --> 00:25:46,320

current location is not equal to an ad is geocoding is actually true.



376

00:25:46,340 --> 00:25:49,490

So this means that it didn't actually run.



377

00:25:49,580 --> 00:25:51,870

So it actually works perfectly here.



378

00:25:51,890 --> 00:26:00,360

Now I can't say inside this statement takes the distance that said text that said text.



379

00:26:00,590 --> 00:26:02,660

And now I can actually access the model.



380

00:26:02,700 --> 00:26:07,640

OK the model object that we created Paxi manager thought.



381

00:26:08,100 --> 00:26:10,700

And you can see that we have these two methods right.



382

00:26:10,830 --> 00:26:16,210

This one return the miles between the current location and the destination location here.



383

00:26:16,440 --> 00:26:20,130

And you can see that this Smurfette accepts two arguments.



384

00:26:20,130 --> 00:26:22,350

The first one is the current location of the user.



385

00:26:22,350 --> 00:26:28,050

So we have that to use a current location right so I can just pass that value here use their current



386

00:26:28,050 --> 00:26:29,720

location karma.



387

00:26:30,030 --> 00:26:34,170

And now we need to pass the meters per mile.



388

00:26:34,380 --> 00:26:34,890

OK.



389

00:26:35,070 --> 00:26:38,680

So the meters per mile is a value that we are going to get from our.



390

00:26:38,730 --> 00:26:39,270

Eddie takes.



391

00:26:39,270 --> 00:26:41,490

Let me show you the emulator.



392

00:26:41,490 --> 00:26:46,020

So this is our emulator and this is actually the term meters per mile.



393

00:26:46,050 --> 00:26:46,680

Right.



394

00:26:46,680 --> 00:26:52,350

So whether the user actually enters our value here that value is going to be passed as this argument



395

00:26:52,380 --> 00:26:54,450

as the second argument meters per mile.



396

00:26:54,630 --> 00:26:55,970

It is going to be off the.



397

00:26:56,100 --> 00:27:00,270

But the value that the user actually enters inside is as it takes is going to be off the street.



398

00:27:00,360 --> 00:27:04,380

So we need to actually convert that string value to an integer value.



399

00:27:04,380 --> 00:27:05,730

Lets see how we can do that.



400

00:27:05,760 --> 00:27:12,960

I can actually use the class Integer as you can see the or it is capitalized the right integer to parse.



401

00:27:13,290 --> 00:27:16,450

So this is actually the static method of this integer integer class.



402

00:27:16,520 --> 00:27:16,850

Right.



403

00:27:16,950 --> 00:27:22,250

And instead Apprentice's of this parse into method I need to pass a value of type streambed.



404

00:27:22,320 --> 00:27:25,220

So it is going to be converted to a value of integer.



405

00:27:25,380 --> 00:27:36,350

So I can just say EDT actually meters per mile Dud's get text that it takes that to string.



406

00:27:36,690 --> 00:27:42,620

So it is actually a very long method but as you can see I have that extra Apprentice's here.



407

00:27:42,630 --> 00:27:44,390

So now it is actually correct.



408

00:27:44,430 --> 00:27:50,880

So it is actually a lot to learn but it is very simple it may actually create a new line here.



409

00:27:50,910 --> 00:27:55,740

So as you can see we have actually this taxi manager and we are calling this movement and its taxi manager



410

00:27:55,770 --> 00:28:00,350

object returned the miles between the current location and its destination location.



411

00:28:00,360 --> 00:28:04,920

So we passed that they use that kind of location as the first argument.



412

00:28:04,950 --> 00:28:08,320

The second argument is going to be to actually the meters per mile.



413

00:28:08,460 --> 00:28:14,250

So because the user is supposed to enter that value inside it it takes that value is going to be off



414

00:28:14,250 --> 00:28:15,060

the street.



415

00:28:15,180 --> 00:28:20,080

So Vinita actually converts that value to our and to an integer value.



416

00:28:20,190 --> 00:28:20,690

Right.



417

00:28:20,730 --> 00:28:26,450

So let me tell you that they use it when the actually the user enters a value inside these editrix.



418

00:28:26,550 --> 00:28:30,720

It is not actually necessarily of types 3 and it is often editable.



419

00:28:30,920 --> 00:28:31,350

OK.



420

00:28:31,590 --> 00:28:34,890

So if you want to you need to actually convert it to a string value.



421

00:28:34,890 --> 00:28:36,770

So thats what we are doing here.



422

00:28:36,840 --> 00:28:41,650

We are getting the value of this EDT meter's pyramid that it takes two to three.



423

00:28:41,910 --> 00:28:47,880

And if you are using this method parse it on the integer class in order to convert a string about you



424

00:28:47,880 --> 00:28:49,690

to an integer value here.



425

00:28:49,770 --> 00:28:50,400

Right.



426

00:28:50,460 --> 00:28:54,880

And here there is a problem and the problem is that the problem is actually solved.



427

00:28:54,930 --> 00:29:01,680

Its not a very big deal but the problem is that we are assuming that the user actually enters a value



428

00:29:01,680 --> 00:29:06,930

of type integer here so that it is actually convertible to an integer value if they use it.



429

00:29:06,930 --> 00:29:12,440

For example Intel is of value for example of types 3 and our application is going to crash in the neck



430

00:29:12,480 --> 00:29:19,350

in their previous tutorials of this course I taught you how we can actually use the try catch the exception



431

00:29:19,350 --> 00:29:25,910

handling techniques in Java in order to prevent those kinds of crashes in your application.



432

00:29:26,020 --> 00:29:30,930

OK so I'm not going to cover that here too because you already know about that you already know how



433

00:29:30,930 --> 00:29:32,560

to use the try catch here.



434

00:29:32,610 --> 00:29:38,880

You can't just put it create a try catch and inside the tribal touch you can actually use this piece



435

00:29:38,880 --> 00:29:44,970

of code and you can convert this string value to an integer value and instead the catch block you can



436

00:29:44,970 --> 00:29:49,380

actually just catch the exception and your application is not going to crash.



437

00:29:49,500 --> 00:29:49,970

OK.



438

00:29:50,310 --> 00:29:53,830

So that's it you are converting the string value to an integer value.



439

00:29:54,030 --> 00:29:57,560

And now this actually puts the second piece of code here.



440

00:29:57,840 --> 00:30:03,780

So after we actually setting some text to this text the distance I need to just type in here takes the



441

00:30:03,780 --> 00:30:04,490

time.



442

00:30:04,800 --> 00:30:08,410

OK that set text.



443

00:30:08,620 --> 00:30:16,750

And now again I can't say Paxi manager that returned that time left to get to destination location.



444

00:30:16,750 --> 00:30:20,490

So this faith accepts actually three arguments.



445

00:30:20,530 --> 00:30:25,270

The first one is they use their current location so I can pass that here use current location comma.



446

00:30:25,580 --> 00:30:30,090

OK so now in order to show you the arguments that me actually call it again.



447

00:30:30,320 --> 00:30:32,470

So I go in.



448

00:30:32,620 --> 00:30:34,140

So now you can see these arguments here.



449

00:30:34,140 --> 00:30:37,800

The first one is the use of current location comma.



450

00:30:37,840 --> 00:30:42,140

The second argument is the miles per hour or three miles per hour.



451

00:30:42,160 --> 00:30:44,200

So we have an eddy takes for that.



452

00:30:44,200 --> 00:30:45,760

Let me show you the emulator.



453

00:30:45,790 --> 00:30:50,080

This is actually this second Ed. This is actually that is 1 mph.



454

00:30:50,080 --> 00:30:53,680

So again we need to actually have a value of type.



455

00:30:53,710 --> 00:31:00,200

What we need to have a value of float and the value that actually the user enters inside is editrix.



456

00:31:00,280 --> 00:31:02,340

It is of tide actually stream.



457

00:31:02,350 --> 00:31:09,060

So we need to actually convert that value to our two and two offloads value so we can actually use them



458

00:31:09,160 --> 00:31:15,020

in the float class here and the Fed argument is actually that meters per mile.



459

00:31:15,040 --> 00:31:18,460

So let's actually specify the second premise here float.



460

00:31:18,670 --> 00:31:21,610

Let's use the float class you can see that the F is capitalized.



461

00:31:21,610 --> 00:31:27,330

Right thought Parsa float and I can pass a value of type string to this method.



462

00:31:27,370 --> 00:31:29,220

So the value is EDT.



463

00:31:29,610 --> 00:31:37,710

Actually miles per hour that get fixed that two is three right.



464

00:31:37,720 --> 00:31:40,190

So this is our second argument here.



465

00:31:40,450 --> 00:31:42,140

Let's actually put a comma here.



466

00:31:43,310 --> 00:31:46,910

And are actually our first argument is going to be bought.



467

00:31:46,910 --> 00:31:48,650

Let's actually put the comma here.



468

00:31:48,650 --> 00:31:49,140

OK.



469

00:31:49,250 --> 00:31:54,180

So because this second argument is he had floated parts float at the end in private practice this year



470

00:31:54,200 --> 00:31:58,990

is actually related related to this starting Prentice's of these parts float here.



471

00:31:59,000 --> 00:31:59,570

Right.



472

00:31:59,570 --> 00:32:01,020

So now let's specify this.



473

00:32:01,030 --> 00:32:07,230

The first argument actually the argument is the meters per mile that is going to be off that integers



474

00:32:07,230 --> 00:32:11,770

so I can see integer class that parse.



475

00:32:12,200 --> 00:32:19,510

And inside the apprentice's I can just say EDT to the EDT meters per mile.



476

00:32:19,930 --> 00:32:20,850

That's good.



477

00:32:20,860 --> 00:32:24,450

Text that to a string.



478

00:32:24,720 --> 00:32:25,060

Right.



479

00:32:25,110 --> 00:32:28,230

And finally I just need to put a semicolon at the end of my statement.



480

00:32:28,710 --> 00:32:30,750

And here there is actually an error.



481

00:32:30,750 --> 00:32:37,980

So let's let's create a new line here so that we can actually see what's going on here A.J. the person



482

00:32:38,000 --> 00:32:42,200

in it is meter per mile that takes that restraint.



483

00:32:42,300 --> 00:32:43,670

So we need to pass another.



484

00:32:43,730 --> 00:32:44,950

And in practice this year.



485

00:32:45,000 --> 00:32:48,000

So actually the last Prentice's was missed.



486

00:32:48,000 --> 00:32:51,970

So now it is here and everything is working fine.



487

00:32:51,970 --> 00:32:57,890

Here let me actually create another new line here so that you can actually see what's going on here.



488

00:32:57,900 --> 00:33:00,060

It is actually a very long method.



489

00:33:00,060 --> 00:33:01,240

So let me explain again.



490

00:33:01,260 --> 00:33:06,600

We have this taxi manager object we are calling this Smith had returned the time left to get to the



491

00:33:06,600 --> 00:33:13,240

destination location so it can actually give us the time actually lift to get to the destination location.



492

00:33:13,280 --> 00:33:15,390

This it accepts the argument arguments.



493

00:33:15,540 --> 00:33:18,020

The first argument is they use a complication.



494

00:33:18,090 --> 00:33:24,470

The second argument is actually the miles per hour that the user is supposed to provide for our application



495

00:33:24,480 --> 00:33:30,360

in order to actually calculate the time that is left in order to get to their destination location.



496

00:33:30,510 --> 00:33:35,030

And the first trimester actually the argument is metered as per mile.



497

00:33:35,250 --> 00:33:38,460

So it is actually here in Mr. paramount.



498

00:33:38,910 --> 00:33:42,840

And we are actually converting these values to their specific data.



499

00:33:42,840 --> 00:33:46,730

So for example this one is an integer value so if you call it is a class the.



500

00:33:46,890 --> 00:33:48,310

And this one is a float value.



501

00:33:48,390 --> 00:33:50,920

So we called float that float.



502

00:33:51,390 --> 00:33:52,210

So that's it.



503

00:33:52,500 --> 00:33:54,110

And everything is fine.



504

00:33:54,270 --> 00:34:00,730

Let's launch the application on the emulator here because I want to show you something very important.



505

00:34:00,870 --> 00:34:05,460

So now we can see that our application is actually running on the simulator and it says for example



506

00:34:05,490 --> 00:34:10,760

enter the address and tell the address here so I can actually for example and enter an address.



507

00:34:10,770 --> 00:34:16,670

So for example I can say Los Angeles OK Los Angeles.



508

00:34:16,800 --> 00:34:19,160

And it says Enter miles per hour.



509

00:34:19,400 --> 00:34:23,320

So I can say for example six feet and 10 meters per mile.



510

00:34:23,360 --> 00:34:25,450

So I can say for example 40.



511

00:34:25,670 --> 00:34:26,150

Right.



512

00:34:26,360 --> 00:34:32,630

But here let's actually just disappear at this virtual keyboard.



513

00:34:32,630 --> 00:34:37,310

Let's click on the spot and get the data and let's wait.



514

00:34:37,340 --> 00:34:39,440

As you can see nothing happened here.



515

00:34:39,440 --> 00:34:40,790

Let's click on it again.



516

00:34:41,270 --> 00:34:42,410

Nothing happened.



517

00:34:42,410 --> 00:34:50,300

So at this point I want it actually to let you know that as an Android Developer you may always encounter



518

00:34:50,300 --> 00:34:52,180

bugs in your applications.



519

00:34:52,190 --> 00:34:52,490

OK.



520

00:34:52,490 --> 00:34:57,800

When you want to actually for example create a very complex Android application you may always actually



521

00:34:57,800 --> 00:35:00,350

encounter different kinds of box.



522

00:35:00,500 --> 00:35:05,330

And the most important lesson here there is that do not panic.



523

00:35:05,480 --> 00:35:05,860

OK.



524

00:35:06,020 --> 00:35:12,340

You just need to find the bug and you are going to actually eliminate that bug.



525

00:35:12,620 --> 00:35:15,430

And the application is going to work to work fine.



526

00:35:15,620 --> 00:35:15,970

OK.



527

00:35:16,040 --> 00:35:17,030

Do not panic.



528

00:35:17,180 --> 00:35:18,660

So our application has a bug.



529

00:35:18,680 --> 00:35:21,890

As you can see our application actually didn't respond.



530

00:35:21,890 --> 00:35:22,940

Nothing happened.



531

00:35:22,970 --> 00:35:23,830

So there is a bug.



532

00:35:23,880 --> 00:35:25,900

I just need to find that bug.



533

00:35:26,210 --> 00:35:32,030

And the first important point that I want to tell you let you know is that there's that.



534

00:35:32,050 --> 00:35:35,540

But these have happened in the event that actually exists.



535

00:35:35,570 --> 00:35:40,430

So I actually pressed on that get the data button nothing happens right.



536

00:35:40,430 --> 00:35:44,440

So the bug must be inside the actually on each method.



537

00:35:44,670 --> 00:35:45,320

OK.



538

00:35:45,350 --> 00:35:46,400

That's what I'm guessing.



539

00:35:46,400 --> 00:35:46,610

OK.



540

00:35:46,610 --> 00:35:50,760

I'm not actually 100 percent sure that the bug is inside this method.



541

00:35:50,780 --> 00:35:56,530

I'm just guessing that the bug is inside it and if it inside the curly braces of this Anchal each method.



542

00:35:57,020 --> 00:36:00,640

And let me tell you that the bug is in line number 82.



543

00:36:00,950 --> 00:36:01,540

OK.



544

00:36:01,760 --> 00:36:06,700

Instead of initializing the destination location address I mistakenly.



545

00:36:07,110 --> 00:36:11,160

And actually I just did it on purpose.



546

00:36:11,200 --> 00:36:11,400

OK.



547

00:36:11,420 --> 00:36:17,210

I just wanted to let you know about the not panicking when you actually encounter a bug in your application



548

00:36:17,480 --> 00:36:23,040

and you just need to find that Bhagvad it actually exists and just eliminate it.



549

00:36:23,330 --> 00:36:23,910

Right.



550

00:36:23,930 --> 00:36:27,210

This is actually called debugging capability.



551

00:36:27,210 --> 00:36:34,360

I want to increase your Akiba it debugging capability so that the bug happens here actually although



552

00:36:34,370 --> 00:36:38,510

our application didn't crash but it didn't work fine also.



553

00:36:38,630 --> 00:36:45,760

So let's actually solve this bug here instead of assigning destination location address to this out



554

00:36:45,760 --> 00:36:49,690

of this value I need to say this.



555

00:36:49,800 --> 00:36:51,670

Let me actually comment on this line of code here.



556

00:36:51,680 --> 00:36:54,450

I need to say destination location address.



557

00:36:54,470 --> 00:36:59,940

This is actually an instance variable that we created inside this main activity class assignment operator.



558

00:36:59,980 --> 00:37:05,610

Now I can assign address value to the destination location address.



559

00:37:05,620 --> 00:37:06,550

Right.



560

00:37:06,830 --> 00:37:13,520

Because in line number 76 inside this uncle if are getting the value of this it is the address here.



561

00:37:13,850 --> 00:37:17,460

And we are assigning get to this address value which is of type string.



562

00:37:17,720 --> 00:37:23,540

Inside this statement we want to sign that at least value as the destination location address so that



563

00:37:23,810 --> 00:37:25,650

these two values are actually equal.



564

00:37:25,710 --> 00:37:27,800

Ok the same.



565

00:37:27,800 --> 00:37:30,720

So now let's run our application again.



566

00:37:30,740 --> 00:37:34,930

Let me actually stop the program and let me run the app again.



567

00:37:35,190 --> 00:37:38,570

And let's actually choose the emulator and let's click on OK.



568

00:37:38,930 --> 00:37:40,460

Let me show you the emulator.



569

00:37:40,760 --> 00:37:42,190

So now our application is running.



570

00:37:42,200 --> 00:37:44,240

Let's again enter an address.



571

00:37:44,240 --> 00:37:52,690

Los Angeles enter mph so I can say for example 60 centimeters paramount so I can say for example 40.



572

00:37:52,790 --> 00:37:53,180

Right.



573

00:37:53,300 --> 00:37:54,780

Let's actually disappear.



574

00:37:54,800 --> 00:37:58,020

It's actually a virtual keyboard a keyboard disappeared.



575

00:37:58,070 --> 00:38:00,310

And let's click on button get the data.



576

00:38:00,590 --> 00:38:05,050

Let's wait and now again nothing happened.



577

00:38:05,250 --> 00:38:05,670

OK.



578

00:38:05,730 --> 00:38:11,690

So why actually nothing happened here because we are actually using this app on an emulator.



579

00:38:11,850 --> 00:38:12,320

OK.



580

00:38:12,500 --> 00:38:18,060

And it emulator is not actually able to actually get the use of its current location so that we cannot



581

00:38:18,060 --> 00:38:24,240

actually specify the distance for the time to get to the destination location which is actually Los



582

00:38:24,240 --> 00:38:25,190

Angeles.



583

00:38:25,230 --> 00:38:30,960

So there is a problem here because the location they use a current location is going to be null and



584

00:38:31,020 --> 00:38:34,320

it's not going to actually specify any values for these two takes viewers.



585

00:38:34,380 --> 00:38:39,690

So let's actually test this out on our own actual device so I'm going to test it on my own actually



586

00:38:39,700 --> 00:38:42,830

works and let's see if this actually has any box or not.



587

00:38:42,900 --> 00:38:44,890

Let me actually stop the program now.



588

00:38:44,970 --> 00:38:48,830

Let me run the app and this time I'm going to choose HTC Desire.



589

00:38:48,890 --> 00:38:51,400

This is my actually my own view device.



590

00:38:51,410 --> 00:38:53,660

And when we went and with the let's get to kind of OK.



591

00:38:53,820 --> 00:38:59,400

So I tested this up on my own actual device and it works perfectly OK.



592

00:38:59,400 --> 00:39:04,920

It actually gives me the miles and it also gives me the hours and the minutes.



593

00:39:04,980 --> 00:39:07,310

So that's enough for this tutorial.



594

00:39:07,410 --> 00:39:12,370

But let's actually also delete this line of code that actually that was the previous book.



595

00:39:12,630 --> 00:39:18,400

So I think that's enough for the storyline in the next story or we can actually continue adding functionality



596

00:39:18,480 --> 00:39:19,970

to this application.



597

00:39:20,040 --> 00:39:24,910

So I want you to actually start creating your own location based application.



598

00:39:24,950 --> 00:39:30,570

I want to actually post a discussion on your application to the course and also make sure to actually



599

00:39:30,570 --> 00:39:32,660

share your quotes with other students.



600

00:39:32,670 --> 00:39:38,520

Make sure to use your own creativity in order to actually create a location based application based



601

00:39:38,520 --> 00:39:40,740

on the knowledge that you have here.



602

00:39:40,740 --> 00:39:45,510

So the nice tutorials we can actually add more functionality to this application and it's and are going



603

00:39:45,510 --> 00:39:48,240

to actually make it a production ready application.



604

00:39:48,390 --> 00:39:51,660

Thank you very much for watching and I'll see you in the next tutorial.