这只能通过自定义视图来完成。我有同样的问题。查找自定义 ImageView 和路径以及剪切位图。我写了这个片段来从给定的位图中剪辑出语音气泡形状:
public static Bitmap clipit(Bitmap bitmapimg,int direct) {
//1 = direction right
//0 = direction left
Bitmap output = Bitmap.createBitmap(bitmapimg.getWidth(),
bitmapimg.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, bitmapimg.getWidth(),
bitmapimg.getHeight());
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
if(direct == 0) {
canvas.drawRect(0, 0, bitmapimg.getWidth()-15, bitmapimg.getHeight(), paint);
Path path = new Path();
path.moveTo(bitmapimg.getWidth()-15, 10);
path.lineTo(bitmapimg.getWidth(), 20);
path.lineTo(bitmapimg.getWidth()-15, 30);
path.lineTo(bitmapimg.getWidth()-15, 10);
canvas.drawPath(path,paint);
}
if(direct == 1) {
canvas.drawRect(15, 0, bitmapimg.getWidth(), bitmapimg.getHeight(), paint);
Path path = new Path();
path.moveTo(15, 10);
path.lineTo(0, 20);
path.lineTo(15, 30);
path.lineTo(15, 10);
canvas.drawPath(path,paint);
}
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(bitmapimg, rect, rect, paint);
return output;
}
这能解决你的问题吗?