RoundImgeView

public class XCRoundRectImageView extends ImageView {

private Paint paint;

public XCRoundRectImageView(Context context) {

this(context,null);

}

public XCRoundRectImageView(Context context, AttributeSet attrs) {

this(context, attrs,0);

}

public XCRoundRectImageView(Context context, AttributeSet attrs, int defStyle) {

super(context, attrs, defStyle);

paint  = new Paint();

}

/**

* 绘制圆角矩形图片

* @author caizhiming

*/

@Override

protected void onDraw(Canvas canvas) {

Drawable drawable = getDrawable();

if (null != drawable) {

Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();

Bitmap b = getRoundBitmap(bitmap, 360);

final Rect rectSrc = new Rect(0, 0, b.getWidth(), b.getHeight());

final Rect rectDest = new Rect(0,0,getWidth(),getHeight());

paint.reset();

canvas.drawBitmap(b, rectSrc, rectDest, paint);

} else {

super.onDraw(canvas);

}

}

/**

* 获取圆角矩形图片方法

* @param bitmap

* @param roundPx,一般设置成14

* @return Bitmap

* @author caizhiming

*/

private Bitmap getRoundBitmap(Bitmap bitmap, int roundPx) {

Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),

bitmap.getHeight(), Bitmap.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(PorterDuff.Mode.SRC_IN));

canvas.drawBitmap(bitmap, rect, rect, paint);

return output;

}