无法启动活动ComponentInfo。 java.lang.RuntimeException：你的内容必须有一个ListView，其id属性是'android.R.id.list'

Question

我工作的列表适配器视图，我得到这个错误，我有两个布局在一个第一次有会话在会议行布局上布局另一个。这是我的代码。

public class SessionListView extends ListActivity{ 

    private Button prev_btn; 
    private Button next_btn; 
    private ListView sessionListView; 
    private SessionAdapter mAdapter; 
    private Context mContext = this; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.session_layout); 
     sessionListView = (ListView) findViewById(R.id.session_list); 
     //ListView sessionListView = new ListView(this); 

     ArrayList<Session> sessionList = new ArrayList<Session>(); 

     //initListView(this, sessionListView, "item", 30, android.R.layout.simple_list_item_1); 
     prev_btn = (Button) findViewById(R.id.session_prev_btn); 
     next_btn = (Button) findViewById(R.id.session_next_btn); 


     mAdapter = new SessionAdapter(mContext, R.layout.sessions_row, sessionList); 
     sessionListView.setAdapter(mAdapter); 
     setupListneres(); 

    } 

    public void initListView(Context context, ListView listView,String prefix, int numItems, int layout){ 

     // By using setAdpater method in listview we an add string array in list. 
     String[] arr = new String[numItems]; 
     for(int i = 0; i< arr.length; i++){ 

      arr[i] = prefix + (i +1); 
     } 

     listView.setAdapter(new ArrayAdapter<String>(context, layout, arr)); 
     listView.setOnItemClickListener(new OnItemClickListener() { 

      @Override 
      public void onItemClick(AdapterView<?> parent, View view, int position, 
        long id) { 
       Context context = view.getContext(); 

       Intent intent = new Intent(context, SessionDetailsView.class); 
       startActivity(intent); 

       String msg = "item[" + position + "]= " + parent.getItemIdAtPosition(position); 

       Toast.makeText(context, msg, 1000).show(); 
       System.out.println(msg); 

      } 
     }); 

    } 

    private void setupListneres() { 
     // TODO Auto-generated method stub 
     next_btn.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View arg0) { 
       if(prev_btn.getVisibility() == View.VISIBLE && next_btn.getVisibility() == View.VISIBLE){ 
        initListView(getApplicationContext(), sessionListView, "item@third", 30, android.R.layout.simple_list_item_1); 
        next_btn.setVisibility(View.INVISIBLE); 
       }else{ 
        Toast.makeText(getApplicationContext(), "clicked On button", Toast.LENGTH_SHORT).show(); 
        initListView(getApplicationContext(), sessionListView, "item@second", 30, android.R.layout.simple_list_item_1); 
        prev_btn.setVisibility(View.VISIBLE); 
       } 
      } 
     }); 

     prev_btn.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View arg0) { 
       if(prev_btn.getVisibility() == View.VISIBLE && next_btn.getVisibility() == View.VISIBLE){ 
        initListView(getApplicationContext(), sessionListView, "item", 30, R.layout.my_simple_list_item_1); 
        prev_btn.setVisibility(View.INVISIBLE); 
       }else if(prev_btn.getVisibility() == View.VISIBLE && next_btn.getVisibility() != View.VISIBLE){ 
        Toast.makeText(getApplicationContext(), "clicked On button", Toast.LENGTH_SHORT).show(); 
        initListView(getApplicationContext(), sessionListView, "item@second", 30, android.R.layout.simple_list_item_1); 
        next_btn.setVisibility(View.VISIBLE); 
       } 

      } 
     }); 
    } 

    public class SessionAdapter extends ArrayAdapter<Session>{ 

     ArrayList<Session> sessionList; 

     public SessionAdapter(Context context, int textViewResourceId, 
       ArrayList<Session> sesList) { 
      super(context, textViewResourceId, sesList); 
      sessionList = sesList; 
     } 

     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 

      View v = convertView; 
      if (v == null) { 
       LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
       v = vi.inflate(R.layout.sessions_row, null); 
      } 

      // get list of sessions using position 
      Session session = this.sessionList.get(position); 

      // check if session is not null then assign list value to session_row layout view. 
      if(session !=null){ 

       TextView sessionTitleTV = (TextView)findViewById(R.id.session_title); 
       TextView sessionTimeTV = (TextView)findViewById(R.id.session_time); 
       TextView sessionVenueTV = (TextView)findViewById(R.id.session_venue); 

       String sessionTitle = session.getTitle(); 
       String sessionTime = "Start" + session.getStartTime() + "End" + session.getEndTime(); 
       String sessionVenue = "New york"; 

       sessionTitleTV.setText(sessionTitle); 
       sessionTimeTV.setText(sessionTime); 
       sessionVenueTV.setText(sessionVenue); 
      } 
      return v; 
     } 
    } 
} 

和我的错误消息，如下所示。请帮忙。

04-04 05:36:20.566: E/AndroidRuntime(797): FATAL EXCEPTION: main 
04-04 05:36:20.566: E/AndroidRuntime(797): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.tapon.views/com.tapon.views.SessionListView}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list' 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.app.ActivityThread.startActivityNow(ActivityThread.java:2023) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.app.LocalActivityManager.moveToState(LocalActivityManager.java:135) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:347) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:749) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.widget.TabHost.setCurrentTab(TabHost.java:413) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.widget.TabHost$2.onTabSelectionChanged(TabHost.java:154) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.widget.TabWidget$TabClickListener.onClick(TabWidget.java:546) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.view.View.performClick(View.java:4204) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.view.View$PerformClick.run(View.java:17355) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.os.Handler.handleCallback(Handler.java:725) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.os.Handler.dispatchMessage(Handler.java:92) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.os.Looper.loop(Looper.java:137) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.app.ActivityThread.main(ActivityThread.java:5041) 
04-04 05:36:20.566: E/AndroidRuntime(797): at java.lang.reflect.Method.invokeNative(Native Method) 
04-04 05:36:20.566: E/AndroidRuntime(797): at java.lang.reflect.Method.invoke(Method.java:511) 
04-04 05:36:20.566: E/AndroidRuntime(797): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
04-04 05:36:20.566: E/AndroidRuntime(797): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
04-04 05:36:20.566: E/AndroidRuntime(797): at dalvik.system.NativeStart.main(Native Method) 
04-04 05:36:20.566: E/AndroidRuntime(797): Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list' 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.app.ListActivity.onContentChanged(ListActivity.java:243) 
04-04 05:36:20.566: E/AndroidRuntime(797): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:273) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.app.Activity.setContentView(Activity.java:1881) 
04-04 05:36:20.566: E/AndroidRuntime(797): at com.example.views.SessionListView.onCreate(SessionListView.java:35) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.app.Activity.performCreate(Activity.java:5104) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
04-04 05:36:20.566: E/AndroidRuntime(797): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
04-04 05:36:20.566: E/AndroidRuntime(797): ... 18 more 

Answer 1

如果使用ListActivity的id在你的布局你的ListView应该是@android：ID /列表，像这个例子：

<ListView android:id="@android:id/list" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:background="#00FF00" 
      android:layout_weight="1" 
      android:drawSelectorOnTop="false"/> 

Answer 2

在你的ListView你session_layout.xml更改ID，

android:id="@android:id/list"