Androidimageview圆形头像

工作中经常用到圆形头像

有两种解决方法

1.处理bitmap

/***      * 头像切成圆形显示*     **/
public Bitmap toRoundBitmap(Bitmap bitmap) {//圆形图片宽高int width &＃61; bitmap.getWidth();int height &＃61; bitmap.getHeight();//正方形的边长int r &＃61; 0;//取最短边做边长if (width > height) {r &＃61; height;} else {r &＃61; width;}//构建一个bitmapBitmap backgroundBmp &＃61; Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);//new一个Canvas&＃xff0c;在backgroundBmp上画图Canvas canvas &＃61; new Canvas(backgroundBmp);Paint paint &＃61; new Paint();//设置边缘光滑&＃xff0c;去掉锯齿paint.setAntiAlias(true);//宽高相等&＃xff0c;即正方形RectF rect &＃61; new RectF(0, 0, r, r);//通过制定的rect画一个圆角矩形&＃xff0c;当圆角X轴方向的半径等于Y轴方向的半径时&＃xff0c;//且都等于r/2时&＃xff0c;画出来的圆角矩形就是圆形canvas.drawRoundRect(rect, r / 2, r / 2, paint);//设置当两个图形相交时的模式&＃xff0c;SRC_IN为取SRC图形相交的部分&＃xff0c;多余的将被去掉paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));//canvas将bitmap画在backgroundBmp上canvas.drawBitmap(bitmap, null, rect, paint);//返回已经绘画好的backgroundBmpreturn backgroundBmp;
}

2.Glide

Glide.with(mContext).load(bean.getPic()).apply(RequestOptions.circleCropTransform()).into(headImg);

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