Android 15 offers several privacy-protecting features. We will discuss one of these in this article: Screen recording detection ⏺

A 4-step process to ensure everything works as expected.

1️⃣. — Add the install-time permission to your app’s AndroidManifest.xml file

<uses-permission android:name=“android.permission.DETECT_SCREEN_RECORDING” />

2️⃣. — Define the screen-recording callback

private val screenRecordingCallback = { state: Int ->
    when (state) {

        SCREEN_RECORDING_STATE_VISIBLE -> {
            // We're being recorded - Inform the user
           
        }

        else -> {
            // We're not being recorded
        }
    }
}

3️⃣. — Add callback — WindowManager

• We will use WindowManager.addScreenRecordingCallback() , it takes 2 non-nullable parameters:

1. Executor,
2. Consumer<Integer>

@RequiresApi(35)
override fun onStart() {
    //...
    val initialState =
        windowManager.addScreenRecordingCallback(
            mainExecutor, 
            screenRecordingCallback
        )
    
    Log.d("MainActivity", "onStart: Initial state: $initialState")
    
    // Trigger the callback with the initial state 
    screenRecordingCallback.invoke(initialState)

}

4️⃣. — Remove the callback — WindowManager

• We must remove the callback when our activity’s onStop method is called to ensure that we only receive a callback when the activity is in the active state
• WindowManager.removeScreenRecordingCallback() method is used to remove the callback. It takes a single non-nullable parameter: Consumer<Integer>

 /** Stop monitoring for screen recording detection of the activity */
@RequiresApi(35)
override fun onStop() {
    // ...
    windowManager.removeScreenRecordingCallback(screenRecordingCallback)
}

As it is per-activity, we need to do the above steps 👆 for each activity to add it.

That’s all for today, I hope you learned something new

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