Which Activity method is called after all the layout methods?

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野趣味
野趣味 2021-02-01 20:48

I need to do something in an Activity after all the layout methods have been called, all the Views are in place and the Activity is ready

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  • 2021-02-01 21:01

    There's no magic method for that AFAIK. Suggest adding a Handler to your activity class, and post() a Runnable to it from onCreate() that contains the code you want to run.

    If that's still too early you can postDelayed() instead.

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  • 2021-02-01 21:20

    If you are trying to get a width of a view or something. This should work

    Add this to your activity's onCreate

    ViewTreeObserver vto = layout.getViewTreeObserver(); 
    vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
        @Override 
        public void onGlobalLayout() { 
            // Put your code here. 
    
            layout.getViewTreeObserver().removeOnGlobalLayoutListener(this); 
        } 
    }); 
    
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