从Android的ListView中删除项目

我想从列表视图中使用列表中的删除按钮删除列表项目。删除按钮是我的应用程序必须的。从Android的ListView中删除项目

数据存储在ArrayList<HashMap<String, String>>中，所以当我单击删除按钮时，数组列表中的数据将被移除该特定位置，然后调用notifyDataSetChanged()。但是在此之后，我得到了一个索引超出约束例外，因为在我的列表视图中只有一个项目。

请让我知道如何停止我的应用程序崩溃并显示一个空列表时删除数据。

这是我的代码请看看。

View vi = convertView; 
if (convertView == null) 
      vi = inflater.inflate(R.layout.notification_list, null); 
     TextView name = (TextView)vi.findViewById(R.id.NotifScreenName); 
     TextView message = (TextView)vi.findViewById(R.id.NotifScreenText); 
     TextView time = (TextView)vi.findViewById(R.id.NotifScreenTime); 
     ImageView image = (ImageView)vi.findViewById(R.id.NotifScreenPic); 
     Button accept = (Button)vi.findViewById(R.id.NotifScreenAccept); 
     Button decline = (Button)vi.findViewById(R.id.NotifScreenDecline); 
     name.setText(data.get(position).get("name")); 
     message.setText(data.get(position).get("text")); 
     long dv = Long.valueOf(data.get(position).get("sentTime"))*1000; 
     Date df = new java.util.Date(dv); 
     String date = new SimpleDateFormat("MMM dd, hh:mm a").format(df); 
     time.setText(date); 
     imageLoader.DisplayImage(data.get(position).get("image"), image); 
     accept.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 

      } 
     }); 
     decline.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       data.remove(position); 
       notifyDataSetChanged(); 
      } 
     });

这是logcat的输出：

03-12 11:04:32.784: E/AndroidRuntime(1150): FATAL EXCEPTION: main 
03-12 11:04:32.784: E/AndroidRuntime(1150): java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at java.util.ArrayList.get(ArrayList.java:304) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at com.pnf.myevent.ListAdapter.getView(ListAdapter.java:95) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.AbsListView.obtainView(AbsListView.java:2143) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.ListView.makeAndAddView(ListView.java:1831) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.ListView.fillSpecific(ListView.java:1320) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.ListView.layoutChildren(ListView.java:1630) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.AbsListView.onLayout(AbsListView.java:1994) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.View.layout(View.java:14003) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.ViewGroup.layout(ViewGroup.java:4375) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.RelativeLayout.onLayout(RelativeLayout.java:985) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.View.layout(View.java:14003) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.ViewGroup.layout(ViewGroup.java:4375) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.RelativeLayout.onLayout(RelativeLayout.java:985) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.View.layout(View.java:14003) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.ViewGroup.layout(ViewGroup.java:4375) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.RelativeLayout.onLayout(RelativeLayout.java:985) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.View.layout(View.java:14003) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.ViewGroup.layout(ViewGroup.java:4375) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.View.layout(View.java:14003) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.ViewGroup.layout(ViewGroup.java:4375) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1434) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.View.layout(View.java:14003) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.ViewGroup.layout(ViewGroup.java:4375) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.View.layout(View.java:14003) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.ViewGroup.layout(ViewGroup.java:4375) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1892) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1711) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.Choreographer.doCallbacks(Choreographer.java:562) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.Choreographer.doFrame(Choreographer.java:532) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.os.Handler.handleCallback(Handler.java:725) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.os.Handler.dispatchMessage(Handler.java:92) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.os.Looper.loop(Looper.java:137) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at android.app.ActivityThread.main(ActivityThread.java:5039) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at java.lang.reflect.Method.invoke(Method.java:511) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
03-12 11:04:32.784: E/AndroidRuntime(1150):  at dalvik.system.NativeStart.main(Native Method)

来源

2013-03-12 Abhishek Dhiman

请发布您的logcat，以便您的应用崩溃的原因可以了解到 – onkar 2013-03-12 11:02:38

@onkar请检查logcat ... – 2013-03-12 11:08:32

this line data.remove（position）;数据是empy检查之前删除是空的或不行！ – Dinesh 2013-03-12 11:11:50

，如果你在你的下降变量的onClickListener调用data.remove(position)之前的数据是空的检查。

编辑：它应该是data.get（position）你应该在哪里做你的检查，当你创建你的视图。

来源

2013-03-12 11:15:52 smophos

我的代码是删除数据，但我得到这个异常的notifyDataSetChanged（）; – 2013-03-12 11:19:24

在调用data.get（位置）和所有其他数据访问之前，检查数据是否为空。 – smophos 2013-03-12 11:23:38

请试试这个代码

data.remove(position-1);

来源

2013-03-12 11:59:55 onkar

我做了类似的，但使用onContextItemSelected东西。

public boolean onContextItemSelected(MenuItem item) { 
    int itemId = item.getItemId(); 
    AdapterContextMenuInfo aInfo = (AdapterContextMenuInfo) item.getMenuInfo(); 
    planetsList.remove(aInfo.position) 
    aAdpt.notifyDataSetChanged(); 
    return true; 
}

Where planetList是ArrayList，而aAdpt是我的自定义适配器。您可以在我的博客here和here上获得更多信息。希望这对你有所帮助。

来源

2013-03-12 12:06:45 FrancescoAzzola

从Android的ListView中删除项目

回答

相关问题