设置图片圆角

Resources res = getResources();
Bitmap bmp = BitmapFactory.decodeResource(res, R.drawable.good1);
ImageView img2=(Im
4000
ageView)findViewById(R.id.bitmaptest);
img2.setImageBitmap(corner.getRoundCornerBitmap(bmp,20.0f));

package tools;

import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;

public class corner {
public static Bitmap getRoundCornerBitmap(Bitmap bitmap, float roundPX){
int width = bitmap.getWidth();
int height = bitmap.getHeight();

Bitmap bitmap2 = Bitmap.createBitmap(width, height, Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap2);

final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, width, height);
final RectF rectF = new RectF(rect);

paint.setColor(color);
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
canvas.drawRoundRect(rectF, roundPX, roundPX, paint);

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

return bitmap2;
}

}