Android ListView setSelection() does not seem to work

Question

I have a ListActivity that implements onListItemClick() and calls a doSomething() function of the class. The latter contains l.s

Answer 1

You can try 2 ways like these:
Solution A:

    mListView.post(new Runnable() {
        @Override
        public void run() {
            if (null != mListView) {
                mListView.clearFocus();
                mListView.requestFocusFromTouch();
                mListView.setSelection(0);
            }
        }
    });

In some complicated situation, this solution will bring some new problems in Android 8.x.
Besides it may cause unexpected onFocusChange().

Solution B: Define a custom view extends ListView. Override method handleDataChanged().Then setSelection(0). In CustomListView:

@Override
protected void handleDataChanged() {
    super.handleDataChanged();
    if (null != mHandleDataChangedListener){
        mHandleDataChangedListener.onChanged();
    }
}
HandleDataChangedListener mHandleDataChangedListener;

public void setHandleDataChangedListener(HandleDataChangedListener handleDataChangedListener) {
    this.mHandleDataChangedListener = handleDataChangedListener;
}

public interface HandleDataChangedListener{
    void onChanged();
}

In activity:

    mListView.setHandleDataChangedListener(new CustomListView.HandleDataChangedListener() {
        @Override
        public void onChanged() {
            mListView.setHandleDataChangedListener(null);
            mListView.setSelection(0);
        }
    });
    mAdapter.notifyDataSetChanged();

Ok, That's it.