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An application share preferences.



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So an insight is uncreate method.



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We need to actually initialize these typeface objects phone number one phone number two and number three.



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So inside is uncreate me.



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I'm going to actually paste in some lines of code and then I'm going to explain to you what's going



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on here.



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So as you can see here these are the lines of code that I actually pasted here.



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As you can see in line 47 I actually referred to the name of this type phrase object that I actually



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declared in line to anyone inside our main activity class.



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As you can see here inside our uncreate Meffert I want to actually instantiate this phone number of



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an object assignment operator.



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So I refer to the name of this class typeface that create from asset.



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So first we need to actually access the assets folder in our project.



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So in our projects project structure I have these assets folder here.



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So this good assets actually allow us to access this folder.



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And for the second argument we need to specify the path to our front.



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So inside these assets for that I have this Fornes directory.



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So Faunce slash.



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And this is going to be the name of the format that we want to use chunk 5 that ATF as you can see here.



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And again I am actually instantiating this form to number two object assignment operator typeface that



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creates from set get assets Faunce as you can see here Faunce Fauntleroy Brown that PTF.



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So here as you can see I am instantiating this form to number two object again typeface that create



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from aset get assets and here as you can see Fornes slash Fauntleroy Brown that CTF and inline 14:9



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again as you can see I am instantiating this phone number of the object.



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Assignment operator typeface that creates from assett get assets and here as you can see in say to double



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quotes for the second argument I am actually giving the path of the front Faunce slash wunderbar space



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them all that Auty at.



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So now that I actually specified the the my forms and I actually instantiated my phone's objects.



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Now I want to actually override the Andrys your method.



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So unless you have it in my main activity class Ok so I can just type on resume and the autocomplete



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feature of the Android studio is going to help me to actually select the Smurfit and then press on Enter



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key on my keyboard.



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So now as you can see I actually overwrite the Smurfit so now and they don't actually work on this on



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a resume if it later.



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OK in this tutorial but for now let's actually go back again inside this uncreate method and this time



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I want to instantiate these shared preferences object.



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OK.



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So inside this uncreate method I'm going to actually pasting this line of code here.



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So as you can see here this is the line of code that I actually paste that here.



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And first of all I've referred to the name of this object that I declared in my main activity class



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inline 32 as you can see here.



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So now inside these uncreate Meffert I am instantiating this object shared preferences assignment operator.



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So I've referred to the name of this preference manager class that get shared preferences.



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So this object is going to help me and help me to actually save some data inside the shirt.



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Proofer and says And whenever I actually I need them I can actually retrieve those data.



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So preference managers that create a default shared preferences and in say the practices of this Meffert



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we need to actually specify the context.



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So the context is going to be the main activity that is.



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So now I successfully instantiated these shared preferences object.



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So remember let me explain again these shared preferences.



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Object is going to help me to save and retrieve data in my application server.



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For example when the user changes the format or for example when the user increases the size of a takes



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few of you can actually save those information inside the shirt preferences and we can actually retrieve



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those information and use it for example closes.



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It closes the application and and later.



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For example the use that often is the application.



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And we can actually retrieve those saved data that are inside these shared preferences so we can actually



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use this object in order to save and retrieve data in our application.



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So now inside our main activity class I'm actually pasting some lines of code here and then I'm going



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to explain to you what's going on here.



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So here I'm going to paste in a method.



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So as you can see here these are the lines of code that I actually pasted here.



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This is actually a method.



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And as you can see here in lines 69 flew 94.



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Actually MF it.



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OK.



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So I'm going to explain to you what's going on here.



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So as you can see here first about the access modifier of my method inside the main activity class is



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actually Puplick the return type is void.



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So this is going to actually return nothing.



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And the name of this effort is specifically the font for text you want.



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OK so the purpose of this if it is is to actually specify what kinds of fonts you want to actually use



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for our text view one.



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OK.



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Well we actually select a font and and if it is going to actually do its job for us.



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OK so let's see what are the lines of code.



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What is the logic inside this effort.



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So first of all as you can see I created this bully invaluable and as you can see here the name of this



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boolean boolean value but is Phone number one for text view for text that takes one value as you can



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see here.



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This is actually a boolean value variable and as it as you mean no Boolean value it can only hold true



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or false values.



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Ok so the name of this variable is false.



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Number one for takes one value.



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OK.



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And we have another boolean valuable and the name of this variable is false.



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Number 2 for text 1 value.



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OK.



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And we have another really invaluable phone number free for text 1 value.



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OK.



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So inside is some of it as you can see here.



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I am actually instantiating this these bullion valuables that I created here.



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So again I'll fair to the name of this phone number one for text one value here.



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Assignment operator so shared preferences as you can see here we have these shared preferences.



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So remember in our emulator Let me show you.



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So let's actually do on our project now and in our emulator I want us actually to show you something



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in here.



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So now as you can see our application is running on this emulator here.



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Right.



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So if I click on this I mean your button here and click on these settings here.



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Now as you can see this is the settings.



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This is the this is actually a preference category for our ticket number one sitting right.



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So here as you can see I have free phones.



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So if we actually select this phone here and uncheck this phone here I want to actually for example



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choose this format for my text Vonte value for my text you want.



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So as you can see here if I actually as you can see if I select this checkbox the value of this checkbox



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is TLOU is true right.



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And if I unchecked this checkbox now the value of this checkbox is false.



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Ok this is very important when it's actually checked.



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It is true.



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And when it's unchecked it is false.



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So if you actually check this checkbox and actually come back you've in here that effect it must actually



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happen here or the text you want.



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This is text number 1 right.



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So here as you can see I have these boolean value Burleigh's here that's actually going to hold.



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Those are true or false values.



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For example when the user checks the phone number one of you all for example is foreign.



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So remember this is false.



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Number one this is phone number two this is phone number free.



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Right.



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As you can see here.



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So for example if to use a check this checkbox that is Phone number one as you can see here that's valuable



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here.



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Phone number one for text one value here as you can see this is anti-bully right.



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That's that value that's valuable is going to actually hold true value.



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OK this is really important.



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Or if they use it for example or checks this checkbox and unchecked this checkbox here it is a second



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variable here is going to actually hold true valuable.



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And this first one is going to hold a false value.



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This second valuable is going to hold a true value.



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The first one is going to hold as you can see here.



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This first one which is checked is going to hold a false value.



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Right.



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So let's see what what we are doing here.



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So front number of on four takes one value assignment operator shared preferences.



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So this is the share of preferences for actually accessing it and actually saving the data in our application.



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So this is really important shared answers that get Polyana.



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So here we want to get the boolean value OK checkbox Faunce number one text 1.



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So this is the key.



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So this key is actually inside these preferences underlined find that XML here I specify this key here



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for this.



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For example for this front here that is related to this text number one settings inside this preference



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category of this takes number 1 settings.



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This is that she checks checkbox format number of one text one as you can see here.



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So this is the kid in order to access this.



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Actually this checkbox it's OK in order to access the value of this tick box preference.



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So he said this an activity that I will find here.



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I am actually getting the boolean value if the user checks text that checkbox here.



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As you can see if I unchecked this checkbox and if the user checks this checkbox here that is for another



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one event.



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When we call these shared preferences that get bullion is going to actually return our true value as



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you can see here.



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It's going to return this true value because I checked this checkbox.



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So here as you can see pretty answers that get bullion.



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This is the key.



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And here I have this false value.



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This is actually a default value.



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If the application fails to access the share preferences.



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So this is not going to happen.



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But if that happens it's going to actually assign the value falls.



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But don't worry about this always it's going to actually give you the right value.



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And here as you can see I have this phone number two for text 1 value.



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So as you can see here this is number one sitting right.



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We are inside this as you can see inside these preferences Underland Follet find that example here of



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your insight this category preprinted skeptically that is for these takes.



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Number one settings.



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And here I want to access this checkbox the second checkbox that holds this fall Fauntleroy down here



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as you can see.



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So in this minute if the date of a file here I'll refer to the name of this valuable phone number two



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for text 1 value assignment operator.



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So here I want to get this boolean value.



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So in my emulator here if they use that uncheck this checkbox and checks this checkbox here the value



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of the check box is true now right.



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Shall share preferences that get bullion.



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Now I actually fell to this to this key here that I actually put inside this pretty Francis underlined



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file that example here.



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As you can see this is that key.



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And inside this main activity of a fight here I used that key in order to access its value in order



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to access this.



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True or false value if the user takes this checkbox the value of this checkbox is now true if the user



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undertakes this checkbox the value of this checkbox is false.



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OK.



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And it's going to get that value.



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And here is the default value.



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And here I have this phone number free for text 1 value assignment operator shared preferences that



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get boolean.



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Again as you can see we have this key for the first form.



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So in say disproove Francis underlined files that examine as you can see here you are accessing this



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checkbox here of this take box preference for the form.



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As you can see this is the number of free.



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And in say this me an activity that I will find here we want to access that form.



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So here in our emulator if the user checks this checkbox this is the number of free write this checkbox



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is going to actually hold the value true.



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And if the user unchecked this checkbox this checkbox is going to actually hold the value for its social



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preferences that get bullied and this is the key.



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And this is the default value.



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And here I created some if statements.



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So here I am saying that if the value of this phone number on four takes one value this boolean value.



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But as you can see here if the value of this phone number one for takes one value is actually true.



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It's going to actually set the typeface for this text the number text the text number one here.



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So in our emulator here if you click on this back button here as you can see if the user checks the



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box at this chunk file format right.



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This is for another one.



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And here you refer to this valuable if number one for takes one value is true.



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So if the user checks this checkbox if I click on dispatch button here that actually that changes is



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going to happen.



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And this takes you here the front of the stakes you must change to what.



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To this vault number one.



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So this four to number one I actually hold declare this one to not number one in our main activity class



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as you can see.



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And inside on our create method inside this uncreate Meffert I instantiated this actually.



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I instantiated this for another one here as you can see here typeface that create from asset get assets.



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So here as you can see I'll refer to the front Faunce slash chunk 5 that ATF right.



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So I have this front here.



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And as you can see here in our statement here in inside our Meffert specify the font for text view 1



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I created this statement and I am saying that if the value of this phone number of one for takes over



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takes one value is true then a set the typeface for this text number one.



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This takes you here as you can see set the typeface for this Tillich's the text number of on two fronts.



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Number one right.



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If this is true.



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Set the typeface to front number one.



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And I have another as if statement so as if this is if means that it is a valid expression here.



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This condition here is false.



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And then it's going to check this condition here else.



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If the value of this value but the number to four takes one value is actually true then it's going to



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actually assign this typeface to the text number to that set typeface for the number two.



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And we have other else if so if this condition again fails if this condition here is false then it's



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going to check this condition here else if for another fee for takes one value is true then it's going



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to execute this line I've got here.



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He actually takes a number of that set type face for another free.



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OK.



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So now let's actually so here is RMF it right.



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So now that I have this method this specify the form for takes one method.



234

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Now I need to call the Smurfette.



235

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But in my quote which place is going to be the best place to call this fit inside this is your method



236

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that we actually override that inside our main activity class as you can see here.



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This is the resume of it.



238

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So let's actually create a toast here in order to show to the user of this if it is going is going to



239

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be called so toast that takes that make.



240

00:16:19,930 --> 00:16:25,960

First of all we need to pass the context main activity that this comma and here is the text that you



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00:16:25,960 --> 00:16:27,410

want to show to the user.



242

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And now inside the double quotes I can just typing this on Raise your Meffert this on resume Mefford



243

00:16:39,810 --> 00:16:49,400

is called and then for the first argument we need to specify the duration length short that short.



244

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So we need to call this shawm effort on this object in order to show this to the user.



245

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So let's actually click click on run here and then click on OK.



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So now as you can see our application is actually running on the simulator and the on resume effort



247

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is called Right.



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So if you actually click on the menu button here and then click on settings and here for example check



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this checkbox here as you can see and then click and back again this will resume if it is called Right.



250

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So this is you if it is going to be the best place to call this specify the format for text view you



251

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one it.



252

00:17:25,380 --> 00:17:28,140

OK this is the best place on the resume it.



253

00:17:28,200 --> 00:17:35,190

So if we call this Smurfette here specify the font for text view one.



254

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Now let's actually run our project and see what happens.