Home Screen overlay

LockScreenService

package com.arellomobile.wagamamamvp;

import android.app.Service;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.os.Handler;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.Toast;

/**
 * Date: 22-Dec-15
 * Time: 15:09
 *
 * @author Alexander Blinov
 */
public class LockScreenService extends Service
{

	@Override
	public int onStartCommand(Intent intent, int flags, int startId)
	{
		Handler handler = new Handler();
		handler.postDelayed(new Runnable()
		{
			@Override
			public void run()
			{
				WindowManager mWindowManager = (WindowManager) getSystemService(WINDOW_SERVICE);

				View mView = ((LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE)).inflate(R.layout.act_test, null);

				WindowManager.LayoutParams mLayoutParams = new WindowManager.LayoutParams(
						ViewGroup.LayoutParams.WRAP_CONTENT,
						ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0,
						WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
						WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
								| WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
								| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
/* | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON */,
						PixelFormat.RGBA_8888);

				mView.setOnClickListener(new View.OnClickListener()
				{
					@Override
					public void onClick(View v)
					{
						Log.e("Window","touch");
						Toast.makeText(LockScreenService.this, "touch", Toast.LENGTH_LONG).show(); // this stuff doesn't work for unknown reason
					}
				});
				mWindowManager.addView(mView, mLayoutParams);
			}
		}, 5000);
		return super.onStartCommand(intent, flags, startId);
	}

	@Nullable
	@Override
	public IBinder onBind(Intent intent)
	{
		return null;
	}
}

AndroidManifest

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

gistfile1.txt

//strat Service from any place (for example from onReceive)
startService(new Intent(AsyncResultActivity.this, LockScreenService.class));