android 绘制在路径（Path）剪切中的平铺图像 

 1 public static Bitmap TileClipPath(Bitmap src,Path path,int w,int h)
 2     {
 3         BitmapDrawable drawable = new BitmapDrawable(src);
 4         drawable.setTileModeXY(TileMode.REPEAT , TileMode.REPEAT );
 5         drawable.setDither(true);
 6         
 7         Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
 8                 : Bitmap.Config.RGB_565;
 9         Bitmap bitmap = Bitmap.createBitmap(w, h, config);
10         Canvas canvas = new Canvas(bitmap);
11         drawable.setBounds(0, 0, w, h);
12         drawable.draw(canvas);
13         
14         Bitmap outbitmap = Bitmap.createBitmap(w, h, config);
15         Canvas outcanvas = new Canvas(outbitmap);
16         
17         outcanvas.drawARGB(0, 0, 0, 0);
18         Paint paint = new Paint();
19         paint.setAntiAlias(true);
20         paint.setColor(0xff424242);
21         outcanvas.drawPath(path, paint);
22         paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
23         outcanvas.drawBitmap(bitmap, 0, 0, paint);
24         
25         return outbitmap;
26     }

posted @ 2013-03-05 09:49  狂热与执着  阅读(601)  评论(0)  编辑  收藏  举报