How to solve for viewpager : The specified child already has a parent. You must call removeView() on the child's parent first

Question

Into my project I am using viewpager with three tabs named History,Main,Map.Main activity contain Timer,stopwatch,etc

Answer 1

@Override
public Object instantiateItem(View arg0, int arg1) {
    Log.d("instantiateItem", ""+arg0+" "+arg1);
    try { 
        if(mListViews.get(arg1).getParent()==null)
            ((ViewPager) arg0).addView(mListViews.get(arg1), 0);  
        else{
            // I am new to android, it is strange that the view to be added is already bound to a parent
            // Through trials and error I solve this problem with the following codes
            // Add that the element of mlistviews is listview in pagerview;
            ((ViewGroup)mListViews.get(arg1).getParent()).removeView(mListViews.get(arg1));

            ((ViewPager) arg0).addView(mListViews.get(arg1), 0); 
        }
    } catch (Exception e) {   
        Log.d("parent=", ""+mListViews.get(arg1).getParent()); 
        e.printStackTrace();  
    }  
    return mListViews.get(arg1);
}