android圆角处理     public static Bitmap getRoundedCornerbitmap(Bitmap bitmap,float roundpx)      {      Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);      Canvas canvas = new Canvas(output);      final int color = 0xff424242;      final Paint p = new Paint();      final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());      final RectF rectf = new RectF(rect);      p.setAntiAlias(true);      canvas.drawARGB(0, 0, 0, 0);      p.setColor(color);      canvas.drawRoundRect(rectf, roundpx, roundpx, p);      p.setXfermode(new PorterDuffXfermode(android.graphics.PorterDuff.Mode.SRC_IN));      canvas.drawBitmap(bitmap, rect, rect, p);      return output;      }    倒影效果：     public static Bitmap creatReflection(Bitmap bitmap)      {      final int reflectionGap = 4;      int w = bitmap.getWidth();      int h = bitmap.getHeight();      Matrix matrix = new Matrix();      matrix.preScale(1, -1);      Bitmap reflectionImage = Bitmap.createBitmap(bitmap, 0, h/2, w, h/2, matrix, false);      Bitmap bitreflection = Bitmap.createBitmap(w, h+h/2, Config.ARGB_8888);      Canvas canvas = new Canvas(bitreflection);      Paint p = new Paint();      canvas.drawRect(0, h, w, h+reflectionGap, p);      canvas.drawBitmap(reflectionImage, 0, h+reflectionGap, null);      Paint p1 = new Paint();      LinearGradient shader = new LinearGradient(0, bitmap.getHeight(), 0, bitreflection.getHeight()+reflectionGap, 0x70ffffff, 0x00ffffff, TileMode.CLAMP);      p1.setShader(shader);      p1.setXfermode(new PorterDuffXfermode(android.graphics.PorterDuff.Mode.DST_IN));      canvas.drawRect(0, h, w, bitreflection.getHeight()+reflectionGap, p1);        return bitreflection;      }