why do'nt super.onMeasure or textView,setText() trigger measure pass again?

Question

I have some android code of a custom FrameLayout. The code changes some textView text.

I see the change take effect only when i call super.onMeasure(...,...)

I would expect it to call onMeasure() automatically when the text change via code or when I call view.invalidate()

why is the later not effecting the UI?

 @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    if (myAccountView.getVisibility() == GONE) {
      return;
    }
 //some more code
    for (int i = 0; i < chipTexts.size(); i++) {
      String text = chipTexts.get(i);
      myAccountView.setText(text);
      if (myAccountView.getPaint().measureText(text) <= textMaxWidth) {
        break;
      }
    }
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
  }

is calling super.onMeasure() at the end more efficient than calling view.requestLayout()?

Answer 1

Try to call requestLayout() for your view. invalidate() means that onDraw will be called for your view. But if your view changes its bounds you have to call requestLayout.