需要ImageView显示圆形图片做法如下
public static Bitmap toRoundCorner(Bitmap bitmap, float ratio) {
System.out.println("图片是否变成圆形模式了+++++++++++++");
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
bitmap.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final Paint paint = new Paint();
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);
canvas.drawRoundRect(rectF, bitmap.getWidth() / ratio,
bitmap.getHeight() / ratio, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
System.out.println("pixels+++++++" + String.valueOf(ratio));
return output;
}
如果图片是正方形的，将ratio设置为2，如果图片不是正方形，自己再做个截图吧！将图片截成需要的正方形。显示圆角边长1/4,则传入8，以此类推！
出处：http://www.apkbus.com/android-123489-1-1.html
