Draw Doted Lines In Back ground with Image?

Activity.java

1.  public class MainActivity extends Activity {
   LinearLayout layout;
   DrawView drawView;
   public static Display display;
   int length = 10;
   
   
   int width, height, equal_parts_width, equal_parts_height;
   
   
   @SuppressLint("NewApi")
   @Override
   protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   
   
   drawView = new DrawView(this);
   drawView.setBackgroundColor(Color.BLACK);
   // setContentView(drawView);
   setContentView(R.layout.activity_main);
   
   
   layout = (LinearLayout) findViewById(R.id.load);
   layout.addView(drawView);
   
   
   display = getWindowManager().getDefaultDisplay();
   Point size = new Point();
   display.getSize(size);
   width = size.x;
   height = size.y;
   
   
   equal_parts_width = width / 10;
   equal_parts_height = height / 10;
   }
   
   
   public class DrawView extends View {
   Paint paint = new Paint();
   
   
   public DrawView(Context context) {
   super(context);
   paint.setColor(Color.WHITE);
   // paint.setStyle(Style.STROKE);
   paint.setStrokeJoin(Paint.Join.ROUND);
   paint.setStrokeCap(Paint.Cap.ROUND);
   paint.setDither(true);
   paint.setAntiAlias(true);
   }
   
   
   @SuppressLint("DrawAllocation")
   @Override
   public void onDraw(Canvas canvas) {
   // float width = canvas.getWidth();
   // float height = canvas.getHeight();
   float size = width / (120 * 2); // just use 14 it's for convenience here
   paint.setPathEffect(new DashPathEffect(new float[] { size, size }, 0));
   for (int i = 0; i < 11; i++) {
   canvas.drawLine(0, equal_parts_height * i, width,equal_parts_height * i, paint);
   canvas.drawLine(equal_parts_width * i, 0, equal_parts_width * i, height, paint);
   }
   }
   }
   }