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  • How to change gridView child background at given position in android from another activity?

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    I actually want to change particular background of grid view from another activity at user given position. But when i go to activity which contains grid view , add call gridView.getChildAt(position) i got an error .getGetChildAt() call on null object reference. NullPointerException. Thanks

 2 Answer(s)

  • From your question, it seems that you want to make a change in gridview from the Activity/Fragment/Service which is not holding the gridview
    For changing in a view from different activity you can use following techniques:-
    • Dynamic BroadcastReceiver
    • Event Bus
    Note:- It would be good if you can provide some code so that we help you more accurately. 
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