/*** 转换图片成圆形

*

*@parambitmap

* 传入Bitmap对象

*@return

*/

public staticBitmap toRoundBitmap(Bitmap bitmap) {int width =bitmap.getWidth();int height =bitmap.getHeight();floatroundPx;floatleft, top, right, bottom, dst_left, dst_top, dst_right, dst_bottom;if (width <=height) {

roundPx= width / 2;

top= 0;

bottom=width;

left= 0;

right=width;

height=width;

dst_left= 0;

dst_top= 0;

dst_right=width;

dst_bottom=width;

}else{

roundPx= height / 2;float clip = (width - height) / 2;

left=clip;

right= width -clip;

top= 0;

bottom=height;

width=height;

dst_left= 0;

dst_top= 0;

dst_right=height;

dst_bottom=height;

}

Bitmap output=Bitmap.createBitmap(width, height, Config.ARGB_8888);

Canvas canvas= newCanvas(output);final int color = 0xff424242;final Paint paint = newPaint();final Rect src = new Rect((int) left, (int) top, (int) right,

(int) bottom);final Rect dst = new Rect((int) dst_left, (int) dst_top,

(int) dst_right, (int) dst_bottom);final RectF rectF = newRectF(dst);

paint.setAntiAlias(true);

canvas.drawARGB(0, 0, 0, 0);

paint.setColor(color);

canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

paint.setXfermode(newPorterDuffXfermode(Mode.SRC_IN));

canvas.drawBitmap(bitmap, src, dst, paint);returnoutput;

}/*** to圆角Bitmap

*@parambitmap

*@return

*/

public static Bitmap getRoundedCornerBitmap(Bitmap bitmap,floatroundPx) {try{

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

bitmap.getHeight(), Config.ARGB_8888);

Canvas canvas= newCanvas(output);final int color = 0xff424242;//颜色值(0xff---alpha)

final Paint paint = newPaint();final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());final RectF rectF = new RectF(rect);//Rect是使用int类型作为数值，RectF是使用float类型作为数值//--------抗锯齿-------// paint.setAntiAlias(true);

canvas.drawARGB(0, 0, 0, 0);

paint.setColor(color);

canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

paint.setXfermode(newPorterDuffXfermode(Mode.SRC_IN));final Rect src = new Rect(0, 0, bitmap.getWidth(),

bitmap.getHeight());

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

}catch(Exception e) {

e.printStackTrace();return null;

}

}