title: Method drawVertices() didn't drawing anything on Android Canvas
body: <p>I would like to draw triangles, and polygons</p>
  
  <p>To draw a triangle I use this method that I found on internet :</p>
  
  <pre><code>this.p.setStyle(Paint.Style.STROKE);
      int triangleColors[] = {
              this.p.getColor(), this.p.getColor(), this.p.getColor(),
              this.p.getColor(), this.p.getColor(), this.p.getColor()
          };
  
      float verts[] = {
              ptsFloat.get(0).x, ptsFloat.get(0).y,
              ptsFloat.get(1).x, ptsFloat.get(1).y,
              ptsFloat.get(2).x, ptsFloat.get(2).y
      };
      c.drawVertices(Canvas.VertexMode.TRIANGLES, 
          verts.length, 
          verts, 
          0, 
          null,
          0,
          triangleColors,
          0,
          null, 
          0,
          0,
          this.p);
  </code></pre>
  
  <p>But the result is null, I've nothing drawn ...
  Whereas, drawLine, drawCircle works perfectly well, have you any idea why this method doesn't work ? Futhermore, I don't have any traces in my logcat console for helping me !</p>