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copied!<p>Well If I understand correctly according to your code you are using a <code>SurfaceView</code> so to draw inside it you can read the accepted answer <a href="https://stackoverflow.com/questions/6690898/drawing-to-a-surfaceview-in-android" title="here">here</a> where inside <code>private void drawMyStuff(final Canvas canvas)</code> you have to put the code to draw the rectangles you want, and call <code>invalidate()</code> to redraw the <code>SurfaceView</code> every time you change something (like the coordinates).</p> <p>Also you can create your own custom <code>View</code> and draw inside it, you can see a working example I am using in my project <a href="https://github.com/dragondgold/MultiWork/tree/master/src/com/roboticarm/andres" rel="nofollow noreferrer" title="here">here</a>.</p> <p>You already have the (x,y) coordinates of the touch so to draw the rectangles inside your <code>SurfaceView</code> using <code>Canvas</code>. Here some code you can use for reference, all you have to do is change the numbers by the (x,y) coordinates where you want to draw:</p> <pre><code>Paint paint = new Paint(); paint.setColor(Color.BLACK); paint.setStrokeWidth(3); canvas.drawRect(30, 30, 80, 80, paint); paint.setStrokeWidth(0); paint.setColor(Color.CYAN); canvas.drawRect(33, 60, 77, 77, paint ); paint.setColor(Color.YELLOW); canvas.drawRect(33, 33, 77, 60, paint ); </code></pre> <p>Now to resize your rectangle you will have to save the coordinates somewhere, you can use <a href="http://developer.android.com/reference/android/graphics/Rect.html" rel="nofollow noreferrer" title="Rect">Rect</a> to save the coordinates for each rectangle you have. Then to re-size them you can read the coordinates from the touchscreen and see if they are NEAR some of your rectangles coordinates. I say near because it would be difficult to touch exactly the coordinate of the corner, you have to see if it is for example in +-10 pixels around the corner. Take care of the rectangle size maybe those 10 pixels are the rectangle width or height. </p> <p>Finally on <code>ACTION_DOWN</code> you track the corner as I write before and on <code>ACTION_UP</code> you take the new coordinates of the corner you detected before on <code>ACTION_DOWN</code>, then, you call <code>invalidate()</code> to redraw your rectangles and you are done!</p> <p>I hope you understood me and helps you in some way :)</p>

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