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So now I want to let you know.



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Another important point.



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So let's actually get me to show you the structure of the project.



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So let's actually click on The View tool windows and then project.



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And as you can see here inside this it's folder if you have tame animals as you can see here in nature



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to open this fall.



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And you can see these tame animals.



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And as you can see here all these images are dot PND.



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Right.



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The format of these images are thought PFG and Enceladus avoid animals.



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As you can see we have also thought PAGG image is right but we have this image which is actually that



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JP.



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So because you want to actually interact with the name of these images from our Java code it's better



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that all of them be actually of the same format.



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So let's actually delete this image while and then underline animals dash ph underline punter that GGP.



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OK so if you want to use this image make sure to change the format of this image and then you can actually



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use it inside your own application.



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But for this application because the format of all these images is actually data P in G.



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It's better to all of them be of the same format.



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So let's just select this image and then presently key on your keyboard and then click on OK.



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So now that image is actually deleted.



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And now that's actually the go inside our main activity the job file here.



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And as you can see here.



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Let's actually go inside these and create options menu.



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As you can see here we have these on create options menu and we have this on options items selected.



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



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



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And now as you can see here at the top we have this action bar and if you want to click on this a certain



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spot in here settings image as you can see.



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Now we want to transition to their settings activity.



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Right.



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So as you can see here we have this image here right.



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So this method uncreate options menu is going to actually put this item here inside this action bar.



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So that's the job of this uncreate options menu.



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So we have already dismissed it here with the default implementation.



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So if it is OK we don't need to change the implementation of this method.



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And now let's actually look at our method here.



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On option items selected right on options items selected.



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So now we need to actually change the Smurfette here.



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We need to change the implementation of this method.



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And as you can see here we have some comments here that says handle action but item clique's here the



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action bar will automatically handle clicks on the home or part of button.



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So long as you specify parent activity in Android manifest that XML.



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Right.



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So now let's actually delete these lines of code.



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Here is implementation.



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And now let's actually put our own implementations here.



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So I'm going to pasting some lines of code here and then I'm going to explain to you what's going on



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here.



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So as you can see here these are two lines of code that I pasted here and in length 60 free as you can



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see I created an instance of type intent.



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I created an intent object here.



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And the name of my instance is preference intent.



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And then I put an assignment operator here as you can see I am actually creating a new instance of type



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into it.



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Right.



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So new intent and as he has it here this actually accepts two arguments the constructor of this intense



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class actually accepts two arguments but the first one is the context main activity that this comma



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and the second argument is the activity that we want to transition to.



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Which is actually setting's activity that class of we haven't still created this activity yet inside



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our project.



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So we need to create this activity now and actually look at our code here in our line 64 start activity



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Prefect's activity our preference intent right.



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So this means that whenever we use that actually clicks on these on the options I'd have selected so



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far.



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So now let me actually show you the emulator.



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Now whenever the user clicks on this image here on this setting's image it's going to actually transition



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to the settings activity that class start activity preferences intent.



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Right.



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So it's going to start.



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The preference is going to start the settings activity here whenever the user clicks on these settings



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image.



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And here finally we are returning this value so returns super that an options item selected item.



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OK so because this if it actually meets the return value of that bullion we need to really put this



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thing in here return super so superior refers to the superclass right supertax on options items selected



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and we passed this item as the argument of this misfit.



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So now the create another activity inside our project.



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So now let's create a view to Windows and then project beautiful windows project and then just now just



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double click this job a folder here and then publicly turn this package here.



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So now just click on File New and then click on activity and here choose basic activity right.



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And for the name of your activity just type in here citizens



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activity



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right.



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So the name of the activities setting's activity the lay out name is activity underline settings.



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The title is setting's activity.



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We don't want these settings activity to be the luncher activities.



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Do not check to search box here.



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And we also need a fragment for this activity so check the search box here use a fragment.



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And here at the bottom it says if true the content will be affreightment right.



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So when you check the box here it says if true the content to be affreightment.



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So OK.



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And now we also want to specify a hierarchical parent for these settings activity.



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So just click on the spot in here.



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Dot dot dot and choose this main activity here.



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As you can see here the hierarchical hierarchical parent screen is going to be the main activity.



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And here we can specify the package name which is OK by default what is OK and then click on finish.



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So now as you can see here at the Android studio he provided us with our settings activity here.



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And it also created a certain activity fragment for us.



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Right.



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And we have also these layouts here.



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So we have activity Underland cities that exemplified.



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We have content underlined settings that they will find which is going to only provide a fragment for



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us as you can see Pracht fragment fragment Underland settings and we have also this fragment underline



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settings here.



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Right.



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So this is our fragment Underland settings and now it's actually double click on this activity Underland



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settings here.



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Just click on this design tab here at the bottom selectees faluting action button and then press until



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it key on your keyboard.



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So now let's actually in say the main activity dojo a file here.



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And now as you can see here the error is gone.



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Right.



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So let's actually go inside these settings activity as you can see here.



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We have these lines of code that are related to the faluting action button.



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So just select this block of code that is related to the fluting action button and then press on delete



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key on your keyboard.



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And now as you can see here we have this line of code here.



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It says Get support action bar that said display home adds up enabled.



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So what does this mean.



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So now let me show you the emulator.



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So here if I actually click on the settings image here as you can see this is our settings activity



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right at the top.



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You can see this actually this arrow here.



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And if I click on it now it's going to actually move to this activity.



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So that's the job of this line of code here.



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Get support action bar.



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So this is action.



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But that said display home as OP enabled so it can actually provide this out here for us.



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And whenever whenever I actually click on this arrow here as you can see we provided the value true



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right.



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So if you actually click on these are here now these can actually transition to this activity main activity.



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Right.



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So hopefully that makes sense.



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And now it's actually double click on the settings activity.



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Fragment here and now you can see that let's actually double click on this Tapio setting's activity



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fragment or Jarba and now you can see this area there you can see that now.



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This area is actually wider.



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So we have this class savings activity fragment that extends from these Fleischman here as you can see.



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So here we don't want to actually directly inherit from this fragment here.



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So we want to actually inherit from the France fragment.



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As you can see here now if we actually hold the comment on my keyboard and then click on this pre-feminist



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fragment here.



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So if you are using a Windows machine hold the control key on your keyboard and then click on this preference



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for argument as you can see this preference fragment is actually inheriting from this fragment.



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Right.



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So now let me actually close this file.



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And now as you can see here it is sitting actually with the fragment is inheriting from this a preference



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fragment.



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So now let me delete these lines of code here that are inside of this class.



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And now I'm going to pasting some lines of code here 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 pasted here.



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So I actually write it the uncreate Smurfette.



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And as you can see this if it actually accepts one argument which is of type Bondel saved instance in



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St..



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And here you are calling the uncreate of the superclass so stupid.



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Uncreate saved instance state and here look at this line of code here which is really important at preferences



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from resource.



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So let me try to show you the structure of the project.



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So just click on View tool windows and then project as you can see we have this ASML folder here.



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Right inside this folder we have this ASML folder.



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And as you can see we have the squeeze under the link preferences.



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So if you actually provided this XML file in order to actually pro-white those settings options.



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OK.



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In order to actually create two cities items so that the user can actually change the format of the



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text of the buttons or the user can actually change the background color of the keys.



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So that's the job of this accident.



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And if you want to use that FOI for our preferences.



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So I actually created this on create Meffert here.



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I actually override it this on create method inside the settings active defragment and then I actually



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called the Smurfette at preferences from resource and then I pass this value to dismiss that are that



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example so it refers to these five dot Q Is Underland preferences right.



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So now we can actually get this example fight and show it to the user.



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Right.



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So let's let's actually go in the setting is activity or jobs.



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So now you can see we have these lines of code here.



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This is the classic settings activity that extends from app copy of compact activity and the override



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that the uncreate Mfat here we called the super class version of this uncreate method and we passed



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this argument to the Smurfette and then we called the Smurfette set content view are that lay out that



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activity underlying settings right.



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So let's actually DoubleClick and lay out what he had as you can see we have this activity under the



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line settings here.



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So we tried it here and then just double click on it takes time.



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Here at the bottom you can see that these are the example codes and we have this include here.



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These include tag layout and inside the double codes you can see that it says at sign out so it refers



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to this lay out for the slash content.



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Settings.



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So it's actually it says that we want to include this content underlined settings on this activity underline



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settings.



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00:12:57,520 --> 00:13:00,050

So we have this content Underland settings.



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That is as you can see we have this fragment here.



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So now it means that we want to use a fragment inside this XML file so that you use that.



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Or that the program can actually interact with the fragment as you can see a fragment on the lengths



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of things.



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And now as you can see we have also this fragment underlined settings that we have these lines of code



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here.



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And as you can see we want to actually put the squeeze underline preferences that exemplified on this



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fragment underline settings.



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So inside the settings activity fragment you can see that we are right at the uncreate Merfeld right.



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And then we called this Myford at preferences from resource are that ASML that these underline preferences.



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So now let's actually build on our project and see what happens.