Border over a bitmap with rounded corners in Android

Question

I used the below to make a bitmap with rounded corners. Now I want to draw a line around the bitmap.

private BitmapDrawable roundCornered(BitmapDrawable scal         


        

Answer 1

I did many search to implement that effect by code, before I found another way but it's not perfect enough, you can see the jaggy on each corner, I set Paint.setAntiAlias(true), Paint.setDither(true), Paint.setFilterBitmap(true), but It doesn't work, so I hope somebody can help me.

RectF roundRect = new RectF(itemRect);

Bitmap bitmap = scheme.getSchemeBitmap(getResources());

mPaint.setStyle(Paint.Style.FILL);
mPaint.setColor(mSchemeSelectedColor);
canvas.drawRoundRect(roundRect, mSchemeCornerRadius, mSchemeCornerRadius, mPaint);

roundRect.set(itemRect.left + mBorderSize, itemRect.top + mBorderSize, itemRect.right - mBorderSize, itemRect.bottom - mBorderSize);
Path clipPath = new Path();
clipPath.addRoundRect(roundRect, mSchemeCornerRadius, mSchemeCornerRadius, Path.Direction.CW);
canvas.save(Canvas.CLIP_SAVE_FLAG);
canvas.clipPath(clipPath);
canvas.drawBitmap(bitmap, null, roundRect, mPaint);
canvas.restore();