问题
How can I have more than one button, or a button and a text view in the same location in one layout but one on top of the other?
I want to have a button that is hidden most of the time, but occasionally will have a non intrusive popup that will prompt something. The rest of the time there will be a text view there that is a different size.
回答1:
Please take a look at RelativeLayouts.
They use android:layout_below and android:layout_above to position elements below/above other elements.
回答2:
Use TextView.setVisibility(View.VISIBLE) or TextView.setVisibility(View.GONE) depending on your condition and you may not need to put elements on top of each other in the layout.
来源：https://stackoverflow.com/questions/7888337/how-to-put-elements-on-top-of-each-other-in-the-same-xml-layout