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Requestlayout and Invalidate methods in Android view

Source: Internet
Author: User
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Requestlayout and Invalidate methods in Android view requestlayout: When view determines that it is no longer suitable for an existing region, the view itself calls this method to require the parent The view re-invokes his onmeasure onlayout to reset his position. Especially when the layoutparameter of a view changes and its value is not applied to the view, this is the appropriate method to call. Invalidate:view itself calls Force view redraw

Requestlayout and Invalidate methods in Android view

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