listview要素を含むアクティビティのフラグメントがあります。リストビューにデータを追加できません。誰かが私に何が悪いのか教えてもらえますか?
public class MainActivity extends FragmentActivity {
public String[] listS ={"item1","item2","item3"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
MainFragment f = new MainFragment();
ft.replace(R.id.fragcontainer, f);
ft.commit();
//here the problem occurs
ListView lv = (ListView)findViewById(R.id.listf);
lv.setAdapter(new ArrayAdapter<String>(this, R.layout.list_row,R.id.labeld, listS));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
フラグメントのクラス:
public class MainFragment extends Fragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle sis){
return inflater.inflate(R.layout.fragment_layout, container, false);
}
}