Android 14 introduces a privacy-preserving screenshot detection API to create a more standardized screenshot detection experience.

Apps can register callbacks on a per-activity basis using this API.

If the user takes a screenshot while that activity is visible, these callbacks are invoked, and the user is notified.

A screenshot can only be detected if the user presses a specific combination of hardware buttons.

Implementation

Add permission to Manifest

• This is an install-time permission, so we do not need to worry about it during runtime 🙌

<uses-permission android:name="android.permission.DETECT_SCREEN_CAPTURE" />

Implement ScreenCaptureCallback interface

• A method called onScreenCaptured() needs to be overridden.

@RequiresApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
class MainActivity : ComponentActivity(), Activity.ScreenCaptureCallback {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        setContent {
             Text("Screenshot Detection API")    
        }
    }

    override fun onStart() {
        super.onStart()
        // Register callback to detect screenshot
        registerScreenCaptureCallback(mainExecutor, this)
    }

    override fun onStop() {
        super.onStop()
        // unregister callback to detect screenshot
        unregisterScreenCaptureCallback(this)
    }

    override fun onScreenCaptured() {
        // Inform the user or do whatever you want
        Log.d(TAG, "onScreenCaptured: Screenshot detected")
    }

    companion object {
        const val TAG = "MainActivity"
    }

    
}

Sample Code

References

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