Develop A Custom Launcher on Android Everything You’ll Be Producing Introduction In its most elementary type, there is a launcher a request that does the next: It represents the device’s home display It provides and launches programs which can be installed to the product Quite simply, it is whenever you click your home option, the applying that turns up. You’re presently usingthe default launcher that is included with your Android installment, if you don’t’ve previously mounted a custom launcher. A great deal of system manufacturers have their very own standard, custom launchers that comply with their exclusive appear and feel, for example ,Samsung TouchWiz Impression. In this training, we are proceeding tocreatea basic launcher with a fundamental userinterface. It will have two screens: A house monitor featuring the picture of the unit A screen showing details and the celebrities of the purposes installed around the product 1. Needs You should possess the following configured and mounted on your own development device: Android SDK and platform tools IDE 3.7.2 or more together with the ADT plugin An emulator or Android unit runningAndroid 2.2 or more You are able to obtain platform instruments the Android builder website and the SDK. Project Setup Launch Eclipse and produce a new Android software undertaking. The application SimpleLauncher’m being named by me. But you could name itanything you want.Make certain you utilize a uniquepackage.

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The SDK type that is cheapest ourlaunchersupports is Froyo and the mark SDK is Jelly Bean. Since wedon’t wish to develop A Taskselect Create Exercise. Click Conclude to continue. Project Manifest The next thing is modifyingthe addingtwo actions are filed by by AndroidManifest.xml. The very first Exercise displays your home monitor. Let us label it HomeActivity. By adding the categories android.intent.category.HOME and android.intent.category.DEFAULT to the intent- filter group, the linked Task reacts such as a launcher and appears as an alternative once the button that is device’shome is pressed by you. We need toset the launchMode to singleTask to make surethat the method whenever you want holds just one occasion with this Activity.

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To exhibit the user’swallpaper, established the theme. The Pastime we that is next should adddisplays the purposes which can be mounted about the person’s product. Additionally it is for introducing programs responsible. We don’t require any particular configuration for this Action. Brand eassy writer it AppsListActivity. Exercise Styles Generate an XML file for within the res/format directory and name of the undertaking. The single Button that that is layouthasan reacts to press occasions.

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Clicking the switch takes the user from your residence screen for applications’ set. Next, develop anXML apply for type in the res brand it activity apps list.xml and /layout directory of the undertaking. A ListView that occupies the entire monitor is contained by the format. Ultimately, produce a next XML record while in the same site. This file defines an itemin the ListView’s format. An application mounted on the user’sdevice is represented by each listing viewitem. It reveals label, the application’sicon, and package title. We exhibit theapplication tattoo applying ImageView TextView situations for bundle and thelabel label. Implementing Lessons that are theActivity HomeActivity With all the applying created’s styles, the 2 Exercise classes are tocreated by it’s moment.

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You chosen while in the express file of the project earlier, when making both courses, ensure the label of each type one. Create a new type called HomeActivity and set android.app.Activity as its superclass. While in the class’s onCreate approach,we produce setContentView. Transferring inthelayout we created earlier. You may remember thatwe included a activity home layout that causes amethod called showApps.We nowneed to apply that technique in HomeActivity category. The setup is not very compound, we commence it and generate an Motive for. AppsListActivity Build another Task class named android.app.Activity that is set is anded by AppsListActivity as its superclass.In the onCreate method setContentView.

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Moving activity apps list layout that was inthe we made earlier. Youcan manage and conserve your program at this time, though our launcher is not finished nevertheless. When unit that is youpressthe’s household option, you shouldsee a popup asking youwhich launcher you would like to employ. you should seeyour new house screen with a single-button in the the screen, if youchoose Simple Launcher Home. It’s also advisable to observe your unitis recent wallpaper. Return to Eclipse and produce a class named AppDetail that may contain the information on icon, its package name, tag, and a software. While you can easily see below the software is pretty simple.

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Programs that are fetching Within the AppsListActivity class’ loadApps method, we use the queryIntentActivities method of the PackageManager class to retrieve all Intents which have a group of Intent.CATEGORY LAUNCHER. A that may belaunched with a launcher is returned by the question. We hook through the outcome of the dilemma and incorporate each object into a listing called apps. Take a look in the following code bit for clarification. Displaying the List of Applications With the apps variable we may present the set of purposes utilizing ListView class.We produce a basic ArrayAdapter and override its getView method to make the list’sitems. We thenassociate the ListView with the adapter. Listening for Clicks When the userclicks an item within the ListView. The similar application ought to be unveiled by our launcher. We utilize the getLaunchIntentForPackage way of develop an Intent with which we begin the applying.

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Take a peek at the bit that is following. Putting Everything Together To create everything work together, we have to produce loadApps. And addClickListener in onCreate method of the type. Develop and run your software once more to determine the effect. You ought to nowbe in a position to begin to see the purposes that can be introduced once the option click about our launcher’s household screen. Click an itemto introduction the request that is corresponding. Conclusion You now have your personal launcher. It’s very essential, nevertheless, you may add most of the customizations you would like. I encourage one to take a peek in the test Android Developer Website if you want to search further into customized launchers.