title: Canvas.DrawBitmap() doesn´t draw anything on android!! :(
body: <p>i´m trying to make a game, but im stuck on the drawing.....</p>
  
  <p>i make a custom surfaceView (with a draw() and update() methods) and my game loop(updating and drawing the view). </p>
  
  <p>Everythong goes perfectly until i use the method Canvas.drawBitmap(Bitmap, Rect src, Rect dst, Paint p), becuase when i try to draw, for example :</p>
  
  <pre><code>Canvas.DrawBitmap(bitmap, null, new Rect(100, 100, 200, 150), null);
  </code></pre>
  
  <p>it doenst draw anything!! but here is the wearest part, if i put sumething like this:</p>
  
  <pre><code>Canvas.DrawBitmap(bitmap, null, new Rect(0,0,100,150), null);
  </code></pre>
  
  <p>it draw it perfectly as it has to be!!!! and if i put something like this:</p>
  
  <pre><code>Canvas.DrawBitmap(bitmap, null, new Rect(50,0,100,150), null);
  </code></pre>
  
  <p>it forms like limits, i mean, thas everything over the(for example, becuase im not sure how many pixels) 100px height doesn´t apear!!! i have tried many ways, PLEASE!!! can you help me!!!</p>
  
  <p>(PD: My native language is spanish, i sorry if my text have some issue.)</p>