ListView未从ArrayList数据填充

Question

我试图用已连接到设备的所有蓝牙设备填充我的ListView。我通过调试去和ArrayAdapter被接收的数据，但不能将其通过向ListView

我的代码如下所示

Connect2.java

public class Connect2 extends ListFragment { 

private LayoutInflater classInflater; 
private ViewGroup classContainer; 

@Nullable 
@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    // Inflate the layout for this fragment 

    View v = inflater.inflate(R.layout.connect2,container,false); 
    final ListView listview = (ListView) v.findViewById(android.R.id.list); 

    BluetoothAdapter myBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); 
    Set<BluetoothDevice> pairedDevices = myBluetoothAdapter.getBondedDevices(); 

    List<String> previousDevices = new ArrayList<String>(); 
    for(BluetoothDevice bt : pairedDevices) { 
     previousDevices.add(bt.getName()); 
    } 

    ArrayAdapter BTListAdapter = new ArrayAdapter<String>(getActivity(), R.layout.connect2, previousDevices); 

    listview.setAdapter(BTListAdapter); 

    return inflater.inflate(R.layout.connect2, container, false); 
} 
} 

Connect2.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" 
    android:baselineAligned="false"> 


    <LinearLayout 
     android:orientation="horizontal" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content"> 

     <Button 
      android:layout_width="wrap_content" 
      android:layout_height="fill_parent" 
      android:paddingLeft="10dp" 
      android:layout_weight="1" 
      android:id="@+id/connectNewBtn" 
      android:text="@string/newBT"/> 

     <Switch 
      android:layout_width="wrap_content" 
      android:layout_height="fill_parent" 
      android:paddingRight="10dp" 
      android:text="@string/BTtoggle" 
      android:id="@+id/BTSwitch" 
      android:layout_weight="0" 
      android:layout_gravity="end"/> 

    </LinearLayout> 


    <ListView 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:id="@android:id/list"/> 

</LinearLayout> 

Answer 1

很愚蠢的错误，看到th e返回语句

您没有返回已加载listview的视图。您正在返回一个全新的视图。