1

00:00:00,180 --> 00:00:05,070

Hire everyone in this story I want to add another functionality to this application.



2

00:00:05,400 --> 00:00:13,370

So this functionality is actually going to allow the users to be notified whenever they use it actually



3

00:00:13,380 --> 00:00:16,160

changes his or her location.



4

00:00:16,230 --> 00:00:19,620

Actually the physical location of the Android device.



5

00:00:19,680 --> 00:00:20,220

Right.



6

00:00:20,520 --> 00:00:24,870

So the user does not have to click on the button.



7

00:00:24,870 --> 00:00:27,700

Get that data button in order to actually get there.



8

00:00:27,720 --> 00:00:33,470

For example the time that is remains to get to the destination location or the distance that is actually



9

00:00:33,470 --> 00:00:36,050

made through this to get to the destination location.



10

00:00:36,470 --> 00:00:42,590

I want the app to automatically send this data to the user.



11

00:00:42,770 --> 00:00:45,810

They use it to be notified automatically about these data up.



12

00:00:45,810 --> 00:00:49,770

You are going to actually update our text views automatically.



13

00:00:49,770 --> 00:00:51,800

So how we can do that.



14

00:00:51,810 --> 00:00:53,350

I want to show you that here.



15

00:00:53,490 --> 00:00:57,810

First of all we need to add some more codes here inside our main activity class.



16

00:00:57,840 --> 00:00:59,480

So lets do that now.



17

00:00:59,670 --> 00:01:03,170

First of all we need to go into the unconnected method.



18

00:01:03,330 --> 00:01:07,080

So let's actually find the Smurfette let's search for this method here.



19

00:01:07,080 --> 00:01:12,060

So if you are using a Mac you just need to hold down the command on your keyboard and then press and



20

00:01:12,060 --> 00:01:16,650

then underneath that if you and your keyboard and if you are using a Windows machine you just need to



21

00:01:16,650 --> 00:01:20,800

hold down the control on your keyboard and then press and delete that if on your keyboard.



22

00:01:20,940 --> 00:01:25,950

So let's search for the unconnected method right.



23

00:01:27,030 --> 00:01:33,390

So here it is are unconnected my faith and now here we are just actually outputting some values to the



24

00:01:33,480 --> 00:01:34,160

log.



25

00:01:34,410 --> 00:01:39,720

So now after this line of code as you can see I actually commented out this method here.



26

00:01:39,720 --> 00:01:40,020

Right.



27

00:01:40,020 --> 00:01:41,890

We are not going to use this method anymore.



28

00:01:42,010 --> 00:01:45,500

Here it is and if it is used in order to get the users current location.



29

00:01:45,780 --> 00:01:51,980

So after this line of code I am going to get the diffuse location provide that API.



30

00:01:52,170 --> 00:01:59,070

So first this actually refers to this fuse location provide that API interface and I need to actually



31

00:01:59,070 --> 00:02:05,130

give a name to this variable faced effused location provide that API assignment operator because this



32

00:02:05,130 --> 00:02:12,760

is actually an interface we can not use the new keyboard in order to create an instance of a fuse location.



33

00:02:12,860 --> 00:02:13,840

Provider API.



34

00:02:14,190 --> 00:02:17,900

So here I'm going to refer to the location services here.



35

00:02:17,910 --> 00:02:24,240

Location Services dot dot fuse location provide the API semicolon.



36

00:02:24,380 --> 00:02:29,740

So in this way we are initializing our variable which is of type fuse location pro-white API.



37

00:02:29,810 --> 00:02:34,810

Right now I can't say because we want to actually get the users.



38

00:02:34,910 --> 00:02:41,480

Actually I want to get to the destination that it's remained to the destination to the destination location



39

00:02:41,510 --> 00:02:47,360

or the time that is left to get to the destination location automatically Vinney to actually create



40

00:02:47,510 --> 00:02:52,300

a loop location request object in order to do that job automatically for us.



41

00:02:52,490 --> 00:02:59,050

So after this line of code here in line number 161 I am going to say location request.



42

00:02:59,090 --> 00:03:02,630

So this is the type of the object that I am going to create right.



43

00:03:02,690 --> 00:03:06,760

So the name of a variable is going to be location request assignment operator.



44

00:03:06,790 --> 00:03:11,230

You can see a new location request semicolon.



45

00:03:11,270 --> 00:03:18,560

So now we have an object of application requests that can request the location so that we can actually



46

00:03:18,560 --> 00:03:24,470

specify the time that is actually left to get to the destination location or the distance that is left



47

00:03:24,470 --> 00:03:25,950

to get to the destination location.



48

00:03:25,970 --> 00:03:29,510

So we must actually create a location or request for that.



49

00:03:29,510 --> 00:03:36,140

So after this line of code I can't say so first of all we need to specify the interval of the location



50

00:03:36,140 --> 00:03:44,500

request so I can say location request that set interval and here I can say ten thousand right as you



51

00:03:44,500 --> 00:03:46,450

can see it is of the milliseconds right.



52

00:03:46,450 --> 00:03:47,140

What does this mean.



53

00:03:47,140 --> 00:03:50,270

This means that 10000 means 10 seconds.



54

00:03:50,440 --> 00:03:58,470

So after 10 seconds it the location eques is going to be he's going to actually request the location.



55

00:03:58,480 --> 00:04:05,480

So this means that every 10 seconds the location is going to be a request that right.



56

00:04:05,490 --> 00:04:07,650

If you want to you can actually change this value if you want.



57

00:04:07,650 --> 00:04:13,080

For example after 50 seconds we can change the value if you want.



58

00:04:13,080 --> 00:04:17,520

For example after five seconds you can change the value to 5000.



59

00:04:17,700 --> 00:04:22,520

But I want that after this request to be executed after 10 seconds.



60

00:04:22,530 --> 00:04:23,070

OK.



61

00:04:23,190 --> 00:04:30,050

So after this line of code I can't say location request that sets priority.



62

00:04:30,120 --> 00:04:32,870

So let's see what values we can use here.



63

00:04:32,880 --> 00:04:38,550

So here I can't say for example just they've been here priority right.



64

00:04:38,770 --> 00:04:40,460

And now look at these values here.



65

00:04:40,500 --> 00:04:44,570

Let me just add to the whole vault here.



66

00:04:44,840 --> 00:04:48,730

So you can see that the first one is priority balanced power.



67

00:04:48,740 --> 00:04:50,240

Look at this one here.



68

00:04:50,270 --> 00:04:55,960

It is used it is it is not going to actually use its battery a lot.



69

00:04:55,970 --> 00:05:01,600

OK it is just going to actually for example just it's the use of a battery a little bit so that it is



70

00:05:01,700 --> 00:05:04,330

its battery is not going to be drained.



71

00:05:04,820 --> 00:05:11,610

And the I mean by you by saying use of Especially I mean the users the device back to you OK.



72

00:05:11,900 --> 00:05:16,230

So their first option is this one priority balance power.



73

00:05:16,310 --> 00:05:22,930

So if you choose this one the user's device battery is not going to be drained dramatically.



74

00:05:23,010 --> 00:05:28,850

It is just it's just going to actually it a little bit of the battery power so that it's going to get



75

00:05:28,850 --> 00:05:31,220

the location of the user.



76

00:05:31,460 --> 00:05:38,140

And the second option is high accuracy this option is used if you want to get the highest accuracy location.



77

00:05:38,150 --> 00:05:42,730

So if you want to use this option this option is going to actually eat a lot of battery.



78

00:05:42,770 --> 00:05:43,680

OK.



79

00:05:44,180 --> 00:05:45,970

The first option is low power.



80

00:05:45,980 --> 00:05:54,110

So it is going to actually just eat a lot do a little bit actually of the user's device past the battery.



81

00:05:54,110 --> 00:05:55,820

And the final option is this one.



82

00:05:55,820 --> 00:05:56,860

No power.



83

00:05:56,990 --> 00:06:00,410

So it is going to give you the worst location possible.



84

00:06:00,410 --> 00:06:07,850

It is not going to give you a very high accurate location because it is not going to eat a lot of battery



85

00:06:07,850 --> 00:06:08,940

power.



86

00:06:08,960 --> 00:06:15,170

So for this application if you're going to use actually to balance out power so that the first value



87

00:06:15,170 --> 00:06:21,480

is that the default the default value is actually this one balance priority balanced power if you want



88

00:06:21,480 --> 00:06:22,910

to you can choose this one.



89

00:06:23,000 --> 00:06:24,800

But the default value is this one.



90

00:06:24,860 --> 00:06:28,780

You don't have to explicitly specify that's why you're here.



91

00:06:28,860 --> 00:06:31,010

Right so I'm just going to put it here for you.



92

00:06:31,400 --> 00:06:38,860

And the first line of code that I am going to say here is that location requires thought displacements



93

00:06:38,870 --> 00:06:39,990

to just type in here.



94

00:06:40,300 --> 00:06:43,510

It set smallest displacement or kit.



95

00:06:43,520 --> 00:06:48,380

We have a getter and the center which as this one said smallest displacement.



96

00:06:48,470 --> 00:06:50,380

And here I am going to assign the value 5 here.



97

00:06:50,390 --> 00:06:51,230

So what is this.



98

00:06:51,230 --> 00:06:55,210

What is this smallest displacement here.



99

00:06:55,640 --> 00:07:06,470

After each for example after 5 meters for example the user has changed its device's location and after



100

00:07:06,470 --> 00:07:14,090

five meters I want to execute it for example get the request I want to actually send a request in order



101

00:07:14,090 --> 00:07:17,810

to get the location of the user's device.



102

00:07:17,810 --> 00:07:23,990

So every five meters the request is going to be actually executed.



103

00:07:24,500 --> 00:07:29,180

So this is disvalue is that if you want to you can for example change the value to 200.



104

00:07:29,180 --> 00:07:35,970

For example after each 200 200 meters the location is going to be requested.



105

00:07:36,380 --> 00:07:38,120

So this is for that.



106

00:07:38,120 --> 00:07:46,450

And now I can say if Google API client will if a claim that is connected.



107

00:07:46,830 --> 00:07:48,560

If it is actually connected actually.



108

00:07:48,570 --> 00:07:55,600

So we created an if statement and he said the curly braces of this statement I can't say fuse location



109

00:07:55,600 --> 00:08:02,260

provide that API that request location location updates to this method.



110

00:08:02,650 --> 00:08:07,140

And now as you can see we need to provide free arguments for this method.



111

00:08:07,150 --> 00:08:13,060

The first one is the Google client so we can actually say Google if a client we have available for that.



112

00:08:13,060 --> 00:08:18,670

The second argument is the location requests so we already created a location request here which is



113

00:08:18,850 --> 00:08:19,450

prime.



114

00:08:19,470 --> 00:08:25,580

Yet with these arguments right for example the entire file ten thousand the priority priority balance



115

00:08:25,580 --> 00:08:29,590

the power accuracy and the smallest displacement displacement five meters.



116

00:08:29,590 --> 00:08:30,110

Right.



117

00:08:30,340 --> 00:08:36,350

So we need to pass the location request here and now we need to specify the first argument.



118

00:08:36,350 --> 00:08:41,630

So let me actually right this minute they get in in order to show you the argument here again.



119

00:08:41,650 --> 00:08:44,330

So the first one is Google a client.



120

00:08:44,560 --> 00:08:50,250

The second one is location request and the first one you can see is the location listener.



121

00:08:50,320 --> 00:08:55,620

So what is this Vieni to provide a location listener here right.



122

00:08:55,630 --> 00:09:04,280

Otherwise you are not going to be actually allowed to notify the application about the location changes.



123

00:09:04,360 --> 00:09:06,270

So lets do that now.



124

00:09:06,370 --> 00:09:11,350

So now you may ask that so what is going to be the listener the listener is going to be the main activity



125

00:09:11,350 --> 00:09:18,200

class the main activity class is going to be the listener to the changes of the actually places of the



126

00:09:18,210 --> 00:09:19,770

users device.



127

00:09:19,930 --> 00:09:21,450

OK but here we have an error.



128

00:09:21,460 --> 00:09:28,570

If I hover over this area it says cannot resolve Mefford request location updates and you can see that



129

00:09:28,570 --> 00:09:35,950

it says that if we passed an invalid context here we passed the main activity that this is main activity



130

00:09:35,950 --> 00:09:41,570

here is not listening to the changes of the users actually the device location.



131

00:09:41,590 --> 00:09:49,150

So really to allow this class main activity to listen to the location changes how we can do that we



132

00:09:49,200 --> 00:09:56,440

need to actually say that this main If the class is conforming or implementing the location listener



133

00:09:56,470 --> 00:09:57,280

interface.



134

00:09:57,310 --> 00:10:00,740

So before that we need to actually scroll to the top.



135

00:10:01,070 --> 00:10:06,190

And now as you can see we are we are already implementing some interfaces here.



136

00:10:06,400 --> 00:10:11,590

And the final interface here is our view that uncock us and lets put a comma here and now we need to



137

00:10:11,590 --> 00:10:17,410

also actually conform to another interface meaning to implement another interface which is called location



138

00:10:17,800 --> 00:10:21,470

listener to this one and then present it to the keyboard.



139

00:10:21,520 --> 00:10:28,570

So now that we are actually conforming or implementing to the location listener interface we must implement



140

00:10:28,990 --> 00:10:32,610

the location change method that is inside this interface.



141

00:10:32,620 --> 00:10:39,380

So now let me actually scroll down here after the end in curly brace of this uncreate Smurfette here



142

00:10:40,490 --> 00:10:48,060

I can actually say on location changed right and press and President to change in order to select the



143

00:10:48,060 --> 00:10:48,680

Smurfette.



144

00:10:48,860 --> 00:10:55,370

So now we have this method right now we are a hundred and fifty percent sure that diskless main activity



145

00:10:55,580 --> 00:10:58,730

is actually listening to the last location changes.



146

00:10:58,730 --> 00:11:03,260

If I scroll down here lets actually find the uncorrect unconnected Meffert you can see that there is



147

00:11:03,260 --> 00:11:05,450

no error here right anymore.



148

00:11:05,930 --> 00:11:11,080

So now after this line of code here we can see that we are actually requesting the locations for us



149

00:11:11,090 --> 00:11:16,190

we are passing the Google IPO client and then we are putting the location request with these parameters



150

00:11:16,520 --> 00:11:21,340

and then we are saying that the listener is diskless main activity class this context right.



151

00:11:21,620 --> 00:11:26,540

So what happens if the application is not actually connected.



152

00:11:26,570 --> 00:11:29,480

In that case we are going to try to connect.



153

00:11:29,510 --> 00:11:35,930

So after the end in curly brace of this if statement I cant say else here I cant say Google for a client



154

00:11:36,290 --> 00:11:38,560

that can act semicolon.



155

00:11:38,840 --> 00:11:40,690

So if you are going to try again.



156

00:11:40,910 --> 00:11:42,230

Right.



157

00:11:42,230 --> 00:11:49,310

We need to be connected to the Google Play services in order to actually access the location changes.



158

00:11:49,370 --> 00:11:55,540

So now that we have this line of code now its time to go to the location change method here.



159

00:11:55,580 --> 00:11:59,120

So this is the method of the interface or location of the center.



160

00:11:59,120 --> 00:12:07,370

So inside this method I can easily say on collidge So here I am referring to dismiss that uncle when



161

00:12:07,370 --> 00:12:08,260

the button is pressed.



162

00:12:08,260 --> 00:12:08,840

Right.



163

00:12:08,910 --> 00:12:12,450

This Let me show you the design activity and then I mean that example.



164

00:12:12,590 --> 00:12:16,990

So when this button is pressed the Anglican faith is going to be actually executed.



165

00:12:17,300 --> 00:12:24,680

So because you want to get the location changes automatically without forcing the user to press on the



166

00:12:24,680 --> 00:12:33,220

spot in I want the app to be able to get the location changes automatically without pressing this button



167

00:12:33,220 --> 00:12:39,160

so let's go to them in the class and here I can say inside is on location change it.



168

00:12:39,360 --> 00:12:42,140

I can say that this is going to be executed.



169

00:12:42,160 --> 00:12:43,110

Unclick.



170

00:12:43,360 --> 00:12:45,050

So I just refer to dismiss it Anklage.



171

00:12:45,190 --> 00:12:48,370

And now you can see that if it needs an argument of type view.



172

00:12:48,520 --> 00:12:54,600

So here because we don't have the view and we are 100 percent 150 percent sure that we have only one



173

00:12:54,610 --> 00:13:00,910

button inside our view we are just going to pass on the knowledge here as an argument because we are



174

00:13:00,910 --> 00:13:06,490

sure that this effort is going to be executed only when the user presses on the spot and get the data.



175

00:13:06,490 --> 00:13:07,270

So let's go to that.



176

00:13:07,270 --> 00:13:09,280

Let's go back to the and activity class.



177

00:13:09,340 --> 00:13:13,800

So what happens when the app goes into background.



178

00:13:13,810 --> 00:13:15,790

So let let me show the emulator here.



179

00:13:15,790 --> 00:13:17,140

This is an application right.



180

00:13:17,620 --> 00:13:20,720

And then I actually press on this.



181

00:13:20,900 --> 00:13:23,590

I can hear the home I can hear if I click on it here.



182

00:13:23,610 --> 00:13:24,720

Now you can see that.



183

00:13:24,760 --> 00:13:27,370

Now the app goes into the background.



184

00:13:27,520 --> 00:13:31,480

In this case in this situation all you want.



185

00:13:31,520 --> 00:13:36,780

They're actually requesting the process of requesting the location to stop.



186

00:13:37,020 --> 00:13:37,580

OK.



187

00:13:37,660 --> 00:13:44,650

All I want only the app to request the locations when the app is actually on the foreground when the



188

00:13:44,650 --> 00:13:45,330

app is running.



189

00:13:45,370 --> 00:13:47,850

And the user is interacting with application.



190

00:13:47,910 --> 00:13:54,480

I don't want the app to actually drain the battery power when the app is in the background.



191

00:13:54,640 --> 00:13:55,220

Right.



192

00:13:55,300 --> 00:14:00,760

So that is a notice that when we are in the background the unpause method of the application is going



193

00:14:00,760 --> 00:14:01,600

to be caught.



194

00:14:01,630 --> 00:14:08,930

So the unposed method is the best place to stop at the location or getting to process.



195

00:14:08,950 --> 00:14:15,760

So now I can say after the curly brace of this on location changed method I can just step in and pause



196

00:14:16,430 --> 00:14:16,980

right.



197

00:14:17,230 --> 00:14:21,820

So after this line of code that actually caused the unpause on the superclass here I can't say.



198

00:14:21,880 --> 00:14:25,200

So first of all we need to actually get the fuse location provide that API.



199

00:14:25,210 --> 00:14:27,880

So just type in here fuse location provider API.



200

00:14:27,880 --> 00:14:34,230

Let's give it a name assignment operator and here I can say location services that fuse location provide



201

00:14:34,230 --> 00:14:35,690

that API semicolon.



202

00:14:35,710 --> 00:14:41,140

And now I can say use the location provider API that remove location updates.



203

00:14:41,140 --> 00:14:46,960

So we need to pass two arguments to the Smurfit the first one is Google API client come up and the second



204

00:14:47,140 --> 00:14:52,840

argument is actually the location listener the listener is diskless like the context main activity that



205

00:14:53,170 --> 00:14:54,990

this semicolon.



206

00:14:55,120 --> 00:14:56,610

That's it.



207

00:14:56,650 --> 00:15:04,060

Now again let me tell you that you must run this application on your actual device in order to see the



208

00:15:04,060 --> 00:15:08,560

results because the emulator does not have the feature to get the user's location.



209

00:15:08,560 --> 00:15:15,220

Or for example as specifying the distance or the time that is remains to that to get to the destination



210

00:15:15,220 --> 00:15:21,960

location because of the current location is going to be not the emulator is not able to get the look



211

00:15:22,000 --> 00:15:23,110

current location.



212

00:15:23,110 --> 00:15:30,180

So when you must actually test this app on your actual device and thats it this is the end of this application



213

00:15:30,490 --> 00:15:38,080

and you can actually extend this application and make it a very complex and full featured Android application



214

00:15:38,080 --> 00:15:40,310

and upload it to the Google Peyster and other.



215

00:15:40,360 --> 00:15:45,580

And I actually recommend you to do that because its a very powerful application.



216

00:15:45,580 --> 00:15:49,980

It can be of very great application for your resume.



217

00:15:49,990 --> 00:15:55,450

And if you want to get employed as an Android Developer its almost necessary for you to have Android



218

00:15:55,480 --> 00:15:57,290

apps in Google place.



219

00:15:57,640 --> 00:16:03,980

So I'm going to add another application to discourse about actually using the camera and taking picture.



220

00:16:04,300 --> 00:16:11,270

So in the next application which is going to be app seventy seven you are going to create that application



221

00:16:11,270 --> 00:16:16,330

in the next application is also going to be a production application so you can upload it right away



222

00:16:16,330 --> 00:16:17,300

to the Google Base there.



223

00:16:17,500 --> 00:16:19,400

So thank you very much for watching.



224

00:16:19,660 --> 00:16:24,610

If you have any questions about the concepts that I taught you in this lesson please post the discussion



225

00:16:24,610 --> 00:16:27,960

in the course and then I do my best to answer all of your questions.