160510A(화)

onDraw & onMeasure

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
   setMeasuredDimension(MeasureSpec.getSize(widthMeasureSpec), mBGHeight);
}

@Override
protected void onDraw(Canvas canvas) {
   super.onDraw(canvas);

   if (mVisible) {
      drawBackground(canvas);
   }
}

onDraw의 너비와 높이를 onMeasure을 호출하여 잡아줬다.