noaht11

private static final String STATE_ID = "id";
private static final String STATE_ITEMS = "items";

private long mId;
private ArrayList<Item> mItems;

private ListView mListView;
private ArrayAdapter<Item> mAdapter;

@Override

noaht11

private static final String STATE_ITEMS = "items";

// Make sure to declare as ArrayList so it's Serializable
private ArrayList<Item> mItems;

...

@Override
protected void onSaveInstanceState(Bundle outState) {
    // Make sure to call the super method so that the states of our views are saved

noaht11

private static final String STATE_COUNTER = "counter";

private TextView mCounterTextView;
private int mCounter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    ...

noaht11

private static final String STATE_COUNTER = "counter";

private int mCounter;

...

@Override
protected void onSaveInstanceState(Bundle outState) {
    // Make sure to call the super method so that the states of our views are saved
    super.onSaveInstanceState(outState);

noaht11

<activity
    android:name=".MyActivity"
    android:label="@string/title_my_activity"
    android:screenOrientation="portrait" />

noaht11

<activity
    android:name=".MyActivity"
    android:label="@string/title_my_activity"
    android:configChanges="orientation|screenSize|keyboardHidden" />