안드로이드의 ListView에서 항목을 제거하십시오.

Question

목록의 삭제 버튼을 사용하여 목록보기에서 목록 항목을 제거하려고합니다. 내 애플리케이션에는 삭제 버튼이 있어야합니다.

데이터가 ArrayList<HashMap<String, String>>에 저장되어 있으므로 삭제 버튼을 클릭하면 배열 목록의 데이터가 해당 위치에서 제거 된 다음 notifyDataSetChanged()이 호출됩니다. 그러나이 후 내 목록보기에 단 하나의 항목이 있기 때문에의 아웃 바운드 인덱스 예외가 발생합니다.

데이터가 제거 될 때 응용 프로그램이 작동을 멈추고 빈 목록을 표시하는 방법을 알려주세요.

이것은 내 코드입니다. 당신이 당신의 하락 변수의 OnClickListener를에 data.remove(position)를 호출하기 전에 데이터가 비어있는 경우

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) 

Answer 1

확인 :

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(); 
      } 
     }); 

이

는 로그 캣 출력이다.

편집 :보기를 만들 때 확인해야하는 data.get (위치)이어야합니다.

Answer 2

이 코드

data.remove(position-1); 

Answer 3

내가 비슷하지만 onContextItemSelected를 사용하여 뭔가를했다을 시도하십시오.

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

planetList는 ArrayList이고 aAdpt는 내 사용자 지정 어댑터입니다. 내 블로그 here 및 here에 대한 자세한 정보를 얻을 수 있습니다. 희망이 도움이됩니다.