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What is the difference between addView and addViewInLayout？

2015-12-17 16:21 651 查看
转自stackoverflow

Its generally a bad idea to call 
addView
inside 
onLayout
because 
addView
internally
triggers a 
requestLayout
which
eventually will call 
onLayout
.
So you end up triggering a layout while you are in the middle of a layout.

addViewInLayout
is
a "safer" version of the 
addView
in
the case you really have to add a new view in 
onLayout
.
It basically doesn't trigger a layout pass (doesn't call requestLayout internally).

See this video (by android engineer) for more detail: http://www.youtube.com/watch?v=HbAeTGoKG6k

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