Android CardView remove padding

Question

how do I get rid of this strange padding in the layout below:

Answer 1

Got the same problem and this worked for me.

app:cardPreventCornerOverlap="false"

For device with API < 21, I had to make a custom ImageView class, override the onDraw to draw the round corners.

@Override
protected void onDraw(Canvas canvas) {
    float radius = getContext().getResources().getDimension(R.dimen.card_corner_radius);
    Path path = new Path();
    RectF rect = new RectF(0, 0, this.getWidth(), this.getHeight());
    path.addRoundRect(rect, radius, radius, Path.Direction.CW);
    canvas.clipPath(path);
    super.onDraw(canvas);
}