Extending a view which overrides onMeasure()

Question

I have a view view1 which extends FrameLayout and overrides onMeasure() like this, so that it is rendered as a square:

  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, widthMeasureSpec);
  }

Now I want to create another view view2 which extends view1, but now I want view2 to have a height equal to the parent, and hence to cover the full screen. As of now, I get it as a square too.

How do I achieve this?

Answer 1

In view 1:

private boolean measureAsSquare = true;

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    if (measureAsSquare) {
        super.onMeasure(widthMeasureSpec, widthMeasureSpec);
    }
    else {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}

public void setMeasureAsSquare(boolean b) {
    measureAsSquare = b;
}

In View2 constructor that subclasses view 1:

public View2(Context c) {
    setMeasureAsSquare(false);
}

Then you can use normal layout weight and height for view 2 to assign its preferred size.