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Nigel Jaure
5,066 PointsNow only create and add a new NewsFragment if there was no saved NewsFragment I am stuck here,please help
bummer! too many NewsFragment how can i solve this problem?
public class MainActivity extends AppCompatActivity
implements NewsFragment.NewsListener {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
NewsFragment newsFragment =(NewsFragment) getFragmentManager().findFragmentById(R.id.placeholder);
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.placeholder, newsFragment);
fragmentTransaction.commit();
}
@Override
public void onNewsItemSelected(int index) {
}
}
1 Answer
Ben Deitch
Treehouse TeacherHey Nigel!
Looks like you're forgetting to check if you've already got a saved NewsFragment:
NewsFragment savedFragment = (NewsFragment) getFragmentManager().findFragmentById(R.id.placeholder);
if (savedFragment == null) {
NewsFragment newsFragment = new NewsFragment();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.placeholder, newsFragment);
fragmentTransaction.commit();
}