How to set wallpaper in android studio from url(kotlin)-CodePudding

I am a novice developer. Can someone help me how can I set the image I have the url as the wallpaper title when I click a button? (Kotlin)

CodePudding user response：

You could go through this official documentation for android developers. Load and display images from the Internet

CodePudding user response：

You need to use WallpaperManager to set the wallpaper, and there's a handy setStream function that takes an InputStream. So instead of having to download the image, you can just open a stream to it, and pass that to WallpaperManager:

button.setOnClickListener {
    lifecycleScope.launch(Dispatchers.IO) {
        val inputStream = URL("https://cdn2.thecatapi.com/images/oe.jpg").openStream()
        WallpaperManager.getInstance(requireContext()).setStream(inputStream)
    }
}

Or if you don't want to use coroutines (you should, it's safer since they get cancelled automatically) you could run it in a worker thread

thread(start = true) {
    val inputStream = URL("https://cdn2.thecatapi.com/images/oe.jpg").openStream()
    WallpaperManager.getInstance(requireContext()).setStream(inputStream)    
}

But you need to do one of those things, because you can't do network stuff on the main thread.

You also need the SET_WALLPAPER and INTERNET permissions in your AndroidManifest.xml:

// inside the main <manifest> block
<uses-permission android:name="android.permission.SET_WALLPAPER" />
<uses-permission android:name="android.permission.INTERNET" />