Android Disable Recent Task Button like in SureLock

Question

Anyone who knows how to disable the Recent Task App Button when it launches the allowed application in the app just like in SureLock Kiosk Lockdown? If so, can you please provide codes for that?

Answer 1

From the source

public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);

        Log.d("Focus debug", "Focus changed !");

    if(!hasFocus) {
        Log.d("Focus debug", "Lost focus !");

        Intent closeDialog = new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
        sendBroadcast(closeDialog);
    }
}

Answer 2

For disabling Recent button add this code to your Main activity:

@Override 
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    if (!hasFocus) {
        windowCloseHandler.post(windowCloserRunnable);
    }
}
private void toggleRecents() {
    Intent closeRecents = new Intent("com.android.systemui.recent.action.TOGGLE_RECENTS");
    closeRecents.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
    ComponentName recents = new ComponentName("com.android.systemui", "com.android.systemui.recent.RecentsActivity");
    closeRecents.setComponent(recents);
    this.startActivity(closeRecents);
}
private Handler windowCloseHandler = new Handler();
private Runnable windowCloserRunnable = new Runnable() {@Override public void run() {
    ActivityManager am = (ActivityManager) getApplicationContext().getSystemService(Context.ACTIVITY_SERVICE);
    ComponentName cn = am.getRunningTasks(1).get(0).topActivity;
    if (cn != null && cn.getClassName().equals("com.android.systemui.recent.RecentsActivity")) {
        toggleRecents();
    }
}
};