android: how do i preserve the data in my arrayadapter/listview when change orientation?

Question

as above, is it done automatically? My list was empty once the orientation chMYanges? and nope, i need the orientation change =)

My adapter

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Answer 1

You can also use http://developer.android.com/reference/android/app/Activity.html#onRetainNonConfigurationInstance()

Something like this in your Activity:

@Override
public Object onRetainNonConfigurationInstance() {
    return this.m_adapter.getItems();
}

And then in your onCreate():

@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);

    // more init stuff here

    sResultsArr = (ArrayList)getLastNonConfigurationInstance();
    if(sResultArr == null) {
        sResultsArray = new ArrayList();  // or some other initialization
    }

    self.m_adapter = new ResultsAdapter(home.this, R.layout.listrow, sResultsArr,home.this);

    // ...
}