設定action bar

XML

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@+id/action_done"
        android:showAsAction="always"
        android:title="完成"
        />
</menu>

JAVA
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu items for use in the action bar
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.done, menu);
    return super.onCreateOptionsMenu(menu);
}

button被點選

public boolean onOptionsItemSelected(MenuItem item) {

   

return true;

}