RoundRectImageView.java 文件源码

/**
 * 获取圆角矩形图片方法
 */
private Bitmap getRoundBitmap(Bitmap bitmap, int roundPx) {  
    Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),  
            bitmap.getHeight(), Config.ARGB_8888);  
    Canvas canvas = new Canvas(output);  

    final int color = 0xff424242;

    final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());  
    final RectF rectF = new RectF(rect);
    paint.setAntiAlias(true);  
    canvas.drawARGB(0, 0, 0, 0);  
    paint.setColor(color);  
    int x = bitmap.getWidth(); 

    canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
    paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));  
    canvas.drawBitmap(bitmap, rect, rect, paint);  
    return output;  


}