自定義ListView不顯示

我試圖使用自定義ListView內Fragment也使用自定義CursorAdapter，但到目前爲止我無法顯示ListView。自定義ListView不顯示

我在做什麼錯了？

我Fragment

import android.app.Fragment; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ListView; 

public class MyListFragment extends Fragment { 

    private CustomcursorAdapter mCustomcursorAdapter; 
    private ListView mListView; 

    @Override 
    public View onCreateView(LayoutInflater inflater, 
          ViewGroup container, 
          Bundle savedInstanceState) { 
     View view = inflater.inflate(R.layout.fragment_mylist, container, false); 

     //CursorAdapter 
     mCustomcursorAdapter = new CustomcursorAdapter(view.getContext(), null, 0); 

     //ListView 
     mListView = (ListView) view.findViewById(R.id.itemslist); 
     mListView.setAdapter(mCustomcursorAdapter); 

     return view; 
    } 

    @Override 
    public void onActivityCreated(Bundle savedInstanceState) { 
     super.onActivityCreated(savedInstanceState); 
    } 
}

我的MainActivity

import android.app.Activity; 
import android.app.FragmentManager; 
import android.os.Bundle; 

public class MainActivity extends Activity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     FragmentManager fragmentManager = getFragmentManager(); 
     if (fragmentManager.findFragmentById(android.R.id.content) == null) { 
      MyListFragment myListFragment = new MyListFragment(); 
      fragmentManager.beginTransaction().add(android.R.id.content, myListFragment).commit(); 
     } 
    } 
}

CustomcursorAdapter

import android.content.Context; 
import android.database.Cursor; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.CursorAdapter; 
import android.widget.TextView; 

public class CustomcursorAdapter extends CursorAdapter { 

    private LayoutInflater mLayoutInflater; 

    public CustomcursorAdapter(Context context, Cursor c, int flags) { 
     super(context, c, flags); 
     mLayoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    } 

    @Override 
    public void bindView(View view, Context context, Cursor cursor) { 
     TextView textview = (TextView) view.findViewById(R.id.itemTextView); 
     textview.setText(cursor.getString(cursor.getColumnIndex(DatabaseHelper.COLUMN_NAME_ITEM))); 
    } 

    @Override 
    public View newView(Context context, Cursor cursor, ViewGroup parent) { 
     return mLayoutInflater.inflate(R.layout.itemslist, parent, false); 
    } 
}

來源

2014-06-09 ivoencarnacao

後CustomcursorAdapter –

@Rod_Algonquin自定義的CursorAdapter貼！ – ivoencarnacao

@ivoencarnacao您使用空遊標初始化您的適配器 - 無數據>無需顯示>無列表。 – nitzanj

下面是我在做什麼。

在片段，我在onActivityCreated（所做的一切）是這樣的：

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

     View campainview = inflater.inflate(R.layout.campaignview, container, false); 

     return campainview; 
    } 

    public void onActivityCreated(Bundle savedInstanceState) { 
      // TODO Auto-generated method stub 
      super.onActivityCreated(savedInstanceState); 

      String[] s = {"a","b","c","d","b","c","d","b","c","d","b","c","d","b","c","d","b","c","d"}; 

      ArrayList<String> aList = new ArrayList<String>(); 

      for(String s1:s){ 

       aList.add(s1); 

      } 

      ListView lv1= (ListView)getActivity().findViewById(R.id.campaignListView); 
      lv1.setAdapter(new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1,aList)); 

     }

這項工作對我的，基本上你可以做的是，而不是使用該適配器iv'e使用，你可以使用你的遊標適配器。如果它仍然無法正常工作，那麼問題出在遊標適配器上，或者可能是來自數據庫的值爲空。

讓我知道這是工作..好運.. :)

來源

2014-06-09 02:03:53 mike20132013

自定義ListView不顯示

回答

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