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So in our project structure just click on this package here inside this Java folder.



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Click on this package right click on it new and for the name just type in here for the new and select



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this job class and for the name of your Java class just they've been here.



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France's activity



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and then click on OK.



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So here as you can see I have this class here and this class here these preferences activity needs to



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extend needs to actually extend from the France activity.



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In our Android preferences as you can see here Android that preference that preferences that preference



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activity this is really important because we want to actually create a preference activity in order



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to let the user to actually change some settings we need to extend from the previous activity that we



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have inside this android that preference package.



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OK so now I can actually put my own logic here in this class.



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So the first thing that we need to do here is to actually overwrite the uncreate method.



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OK.



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So as you can see here we have this uncreate method.



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I just need to select it and then press Enter key on my keyboard.



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So here as you can see I am actually overwriting the uncreate method that we actually extend.



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We inherit that dismembers from this preference activity class.



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So inside this class Enceladus and create Smurfit I can just take an ad free France from resource.



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OK it is Lafferty's deprecated but you need to act as a developer.



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You need to know about these Misfit's because in the future you mean human actually can encounter some



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projects that actually use this method in order to get these up.



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For example many will find those that preference file that prevents a xml file from the resources.



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So here I can just type in our DOT exit mail dot preferences underline find as you can see here and



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here and just adding preferences here for this activity add preferences from resource are examples that



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preferences underline file.



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This is actually like the set content view Meffert that we actually like to put in our main activity



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class inside this uncreate if and as you can see in order to put this out file on our activity.



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Ok for example are that leave out an activity but for our preferences activity we need to use this Minford



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I add preferences from resource are that example that preferences file.



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OK.



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So in our main activity that java file here when the user clicks on these settings a button here as



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you can see on our emulator Let me show our emulator to you now.



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So here is our emulator and if I click on the menu button here you can see it is sitting here.



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So then I click on the settings here I want to actually move to the preferences activity and I want



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to actually open this a preference underline find that example in order to let the user see these checkbox



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preferences and this category and this list views.



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OK in this lawsuit that I created here this list preference.



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OK.



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So let's go back to our main activity that our file and inside this case statement.



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So when the user clicks on the sitting spot.



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And what do I want to happen.



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So here I just need to create an intent object so intent and the name of my object is intent.



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Assignment operator so here I want to instantiate this object new intent at inside Apprentice's.



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First I need to specify the first class main activity but this and I want to move to these preferences



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activity class right.



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So here I can just type in preferences activity class and then put a semicolon at the end of your statement.



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And here I can't just type in start activity intent.



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OK so now let's actually run our project and see what happens.



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So if we don't run our project now our application is going to actually crash when I want to actually



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move to the preferences activity and I want to show you why this happens.



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So as you can see here our application is running on dissimulated.



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And if we click on this menu here.



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Now you want to click on the settings here and as you can see here now our application has actually



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crashed.



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Why.



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Because in the Android manifest here as you can see in our project structure inside this manifest folder



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I have this android manifest that exemplified.



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So here inside our manifest we didn't actually put up this activity and activity tag for our preferences



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activity.



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So inside our application tag I need to actually open another task with the name activity and the name



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of this activity is going to be preferences activity.



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So remember this preferences activity is inside this default package here.



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OK.



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That example that is a site that that app number 51 so it doesn't select need to select this one here



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and that I need to close this attack here.



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OK.



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So let's run our project again and see what happens.



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



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And if I click on this menu in here and here I want to click on the settings here.



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Now I successfully move this activity here and now as you can see here it just takes a number of settings.



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So this I truly open our preferences underline for example here.



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Now you want to show you these values.



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So here I have this title takes number one sitting right and he had as you can see at the top it says



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text number one settings.



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This is the total of the preference category.



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Right.



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And here I have these checkboxes as you can see chunk five.



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This is the title as you can see here.



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And now as you can see here I have this subtitle here.



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This is number one.



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So this is the summary.



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As you can see here this is the description.



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And we also have this default value which is going to specify the font.



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And we have this checkbox here that we can get you to check or uncheck.



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Right.



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And we also have other text boxes Fauntleroy Brown and this checkbox wunderbar spaced them all right.



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And here as you can see we have this one specify the size of your forms for ticks view 1.



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So here this is our least preference as you can see here.



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So if I select this one here if I click on this one here now it's going to show us are some radio buttons.



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Choose one of these sizes.



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So here as you can see the title is as you can see it.



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Click on cancel here.



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The title is this value.



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Specify the size of your faults for text view of one as you can see here.



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This is the title and the date title is.



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If I click on it the dialog title is choose one of these sizes so that I like.



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And we have these entries and entry values as you can see here 25 the Piep 40 DP 45 dpi and these values.



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So inside are strings that exemplified here as you can see these are the values that are going to be



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shown to the user.



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And these are the actual values.



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OK.



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For 25 40 45 or other values that you may want to add or for example delete.



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OK.



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So in our project as you can see here in our application we have these values.



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It is very important that you actually put these string values here.



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OK.



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This of font sizes and font sizes values OK.



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And it's going to try to show these values to the user.



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So now for example I don't want to actually show these deep keys to the user.



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OK.



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I don't want to I don't like this deep here.



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So here I just need to delete this DP here.



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OK.



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These are the values that are going to be shown to the user.



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OK.



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So for example here Depay and delete this one this font and this one.



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And finally this one.



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So let's run our project again and see what happens.



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And now as you can see our application is running on the simulator.



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And if I click on this menu a button and click on the settings here.



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Now if I click on this specify the size of your fonts here for text you want.



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Now you can see that we don't see these deep here.



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OK.



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We just see these values.



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So you can actually customize your values here.



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But it is very important that you actually put these values inside your strings that exemplified.



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So let's go back to our preferences underline of a file for example and here as you can see I have these



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entries and entry values and I have this default value so the default value is going to be numbered



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10.



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OK.



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If the user doesn't actually want to choose any For example enforced the default value is going to be



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10.



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Right.



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Now let's actually for example choose one of these phones here for example number 70.



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And if you click on dispatch button here.



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Now I cannot see the effects here.



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I choose to actually the sex that takes place to be 70 but I cannot see that effect here and the size



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of this text actually doesn't change.



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So if I click on the menu about in here and settings in here and choose this form here to Fauntleroy



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out here and click on this patch button here.



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Now you can I can't see the effects here.



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So now we need to actually go back to our main activity that of a file here.



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And we need to actually put some lines of code here in order to see the effects.



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So now inside our main activity class we can actually paste in some lines of code here and then I'm



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going to explain to you what's going on here.



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



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First of all as you can see in line 21 I actually declared this object which is of type typeface.



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And here this object is actually going to hold this object here.



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As you can see here is going to hold the phone number one.



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OK.



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And B here we have this and other object which is again of type typeface font.



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Number two.



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And here I declared another object again of type type face as you can see here.



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And the name of this object is to number three in order to hold the phone number of feet.



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OK so remember that we have free phones in our project.



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So I needed to actually declare these objects of type type typeface.



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OK.



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And here I have these string values.



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The first one is takes you want size.



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This bitch is going to actually hold the size of the takes you want the second one is takes you to size.



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And the first one is takes a few precise.



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And here in line 31 I actually declare an of type shared preferences as you can see here and the name



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of the subject is shared preferences.



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So I declare this object here in order to actually save.



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They use their preferences so that when they use it for example changes are different of it takes a



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view or for example changes the size of a text view or you want to save that actually data.



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OK.



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And the use of for example close the application and then open it later that that data is going to be



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retrieved from the memory and then you can.



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And then they can actually see the results.



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OK.



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So I actually declare this object in order in order to actually hold the data.



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OK.