How to catch screen capture event on Android devices?

Question

In my Android app, I need to detect the screen capture event. How do I do this?

Answer 1

I have used this code in my application and it works fine. It notifies when a screenshot is taken. I have tested it on OnePlus 1, Nexus 6P, Moto G3. No issues on any devices.

public void detectScreenShotService(final Activity activity) {

    final Handler h = new Handler();
    final int delay = 3000; //milliseconds
    final ActivityManager am = (ActivityManager) activity.getSystemService(Context.ACTIVITY_SERVICE);

    h.postDelayed(new Runnable() {
        public void run() {

            List<ActivityManager.RunningServiceInfo> rs = am.getRunningServices(200);

            for (ActivityManager.RunningServiceInfo ar : rs) {
                if (ar.process.equals("com.android.systemui:screenshot")) {
                    Toast.makeText(activity, "Screenshot captured!!", Toast.LENGTH_LONG).show();
                }
            }
            h.postDelayed(this, delay);
        }
    }, delay);
}