getHeight() vs getLayoutParams().height

What is the difference between getHeight() and getLayoutParams().height of a View? I have a View (GoogleAdView) and I want to hide it, I set getLayoutParams().height to zero but the ad's height (ad.getHeight()) is not zero.

Is there a way to hide the View so that it 开发者_如何转开发doesn't occupy space in the layout?

I've tried to set its visibility to GONE or to set ad.getLayoutParams().height to zero but this doesn't work.

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LayoutParams.height is the height you wish your view will have once laid out and could be set to particular constants like WRAP_CONTENT, getHeight() returns the actual height (it returns 0 until the view isn't laid out). See How Android Draws Views and View - Size, padding and margins.

As Michael said, you have to call requestLayout().

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The correct way to hide a view and ignore it in layouts is to use

setVisibility(View.GONE);

If this is not working for you, you need to find out why. Trying to tweak the sizes is not a good path.

If you have problems with your layout, post it here.