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Have you ever wanted to make your own wallpaper application? Wouldn't it be amazing to show your friends, family and colleagues your creations? Here is a step-by-step tutorial on how to make a wallpaper application in the popular Android Studio platform.

STEP 1: GET THE WALLPAPERS

The first step is to get the wallpapers from which you will make your application work. For this simple example, we are going to use two different wallpapers. The first one is a picture of a colorful garden and the second one is a picture of a mountain with snow. Both can be found in the following webpages:

STEP 2: OPEN AND PREPARE THE PROJECT

Once you have the wallpapers handy, you can open the Android Studio and create a new project. After that, you'll have to add the previously downloaded wallpapers to your project. You can do it by simply dragging and dropping them into the designated folder. After that, you can go to the activity_main.xml file and prepare the user interface for the wallpaper application. First, you'll have to insert a button for asking the user's permission to set the wallpaper. Then, insert another button to set the wallpaper itself. Lastly, you can use an image view to display the wallpaper itself.

STEP 3: WRITE THE MAIN CLASS

In this step you'll have to write the main class, which is responsible for managing the wallpaper application. To do so, you first have to add the following imports to the app:

android.content.Context
android.content.Intent
android.support.v7.app.AppCompatActivity
android.view.View
android.widget.Button
android.widget.ImageView

Once the imports are all set, you can create a class that extends AppCompatActivity and add the necessary methods for your wallpaper application. The first step is to create methods for asking the user for permission to set the wallpapers. After that, create another method for actually setting the wallpapers.

STEP 4: ACCESS THE WALLPAPER MODE

The next step is to use the setWallpaper() method for setting the wallpaper. The method requires two parameters; the first one is the context of the application and the second one is the Intent that will be used to set the wallpaper. You can create an Intent by using the static method createWallpaperIntent(). This method takes a String parameter which contains the URI of the image to be used as a wallpaper. After that, call setWallpaper() with the created Intent and the application context.

STEP 5: TEST RUN THIS APP

Now that everything is set, you can build the app in Android Studio and install it on your device. After that, open the installed application, press the buttons and enjoy the amazing application you just created.

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