why the function getChildCount () always return 0 in onCreate()

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hi all!
i have create a sample project with GridView.
after show items of GridView, i want to change background color when cliked this item.
so, event click on item, i can do...
but, change background is not yet....
i have move this function to onPause() , it's worked, but it's not a good solution
can you help me...

Java

for(int i=0; i<((ViewGroup)v).getChildCount(); ++i) {
    View nextChild = ((ViewGroup)v).getChildAt(i);
}

Posted 16-Jun-13 23:39pm

dev C plus

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josh-jw · Answer 1 · 2013-06-16T23:51:00

Solution 1

Java

gridView.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View v,int position, long id) {
 
               //implement your code here
            }
        });

Posted 16-Jun-13 23:51pm

josh-jw

Updated 16-Jun-13 23:52pm

v2

Comments

dev C plus 17-Jun-13 5:59am

yes, thanks so much for this.
can you do it to automated change background for item of GridView in onCreate().
i want to change it with array list position, is got another activity.
thanks so much

josh-jw 17-Jun-13 6:30am

in which event you want to change the background?