andorid 圆形头像的制作

public static Bitmap getRoundedCornerBitmap(Bitmap bitmap,float roundPx)
    {
    	if(bitmap == null)
    		return null;
	    Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
	        bitmap.getHeight(), Config.ARGB_8888);
	    Canvas canvas = new Canvas(output);

	    final int color = 0xff424242;
	    final Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
	    final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
	  //  final Rect rectd = new Rect(0, 0, bitmap.getWidth()*1.5, bitmap.getHeight()1.5);
	    final RectF rectF = new RectF(rect);

	  //  canvas.drawARGB(0, 0, 0, 0);
	    paint.setColor(color);
	    canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

	    paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
	    
	    canvas.drawBitmap(bitmap, rect, rect, paint);

	    return output;
	}

剪切图片

ImageView imgView = (ImageView) this.findViewById(R.id.img_logo);
		Drawable d = getApplicationContext().getResources().getDrawable(R.drawable.empty_img);
		BitmapDrawable drawable = (BitmapDrawable) d;
		Bitmap bitmap = drawable.getBitmap();
		if (bitmap != null) {
			bitmap = BitmapHelper.getRoundedCornerBitmap(bitmap, bitmap.getWidth() / 2);
			if (bitmap != null) {
				imgView.setImageBitmap(bitmap);
			}
		}

图片使用