如何在抽屜式導航菜單項上切換到列表視圖

Question

我想在單擊該項目時打開一個列表視圖，我使用了listfragment和抽屜導航，當我單擊導航抽屜的菜單項時我自定義了默認的抽屜導航活動，整個listfragment會打開，而不是打開抽屜導航中的片段，並且由於這是我無法返回到抽屜導航活動（用於單擊其他項目），因為列表片段作為單獨的片段打開，這是我的代碼

public boolean onNavigationItemSelected(MenuItem item) {
    // Handle navigation view item clicks here.
    int id = item.getItemId();

    if (id == R.id.teams) {
        Toast.makeText(this, "Teams clicked", Toast.LENGTH_SHORT).show();
        ListFragment listfrag
      =
(ListFragment)getSupportFragmentManager().findFragmentByTag("listfragment");

        if(listfrag==null){
           listfrag =new listFragment();

FragmentTransaction transact=getSupportFragmentManager().beginTransaction();
            transact.add(android.R.id.content,listfrag,"lstfragment");
            transact.commit();

        }

和片段代碼

public class listFragment extends ListFragment {

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup 
container,  Bundle savedInstanceState) {

   ViewGroup rootview = 
(ViewGroup) inflater.inflate(R.layout.customlistview, container, false);

    //data source
    String[] from = { "flag","txt","cur" };

 ArrayAdapter<String> adapter=new 
ArrayAdapter<String>(getActivity(),R.layout.listviewitem, R.id.tvteamsname, from);

    setListAdapter(adapter);
    //  Retain the ListFragment instance across Activity re-creation
    setRetainInstance(true);

    return rootview;

}

Answer 1

首先，在您添加了navigationDrawerMenu Activity中添加一個框架。

FragmentTransaction transact=getSupportFragmentManager().beginTransaction();
transact.add(android.R.id.content,listfrag,"lstfragment");
transact.commit();

將此代碼替換為

FragmentTransaction transact=getSupportFragmentManager().beginTransaction();
transact.replace(R.id.your_frame, listfrag);
transact.addToBackStack(null); // or you can add some string
transact.commit();