Android 在对话框的ListView中提取数据时出错？

我试图通过

ListView

中的JSON获取数据。现在的问题是当

对话框

第一次打开时，它会显示数据正确的

列表视图

，但当我关闭该

对话框

并尝试再次打开时，它会给我错误信息

错误是：

java.lang.IllegalStateException:适配器的内容已更改，但ListView未收到通知。确保适配器的内容不是从后台线程修改的，而是仅从UI线程修改的。确保适配器在其内容更改时调用notifyDataSetChanged（）

我正在从AsyncTast的UI线程修改适配器，我还从UI线程调用

notifyDataSetChanged（）

方法。但不知道为什么第二次打开我的对话框会给我错误

那么我该如何解决这个问题呢

这是我的AsyncTast的onPostExecute方法：

@Override
protected void onPostExecute(String result) {
    super.onPostExecute(result);
    pDialog.dismiss();
    planlist.clear();
    applist.clear();
    try {
        JSONObject obj = new JSONObject(result);

        String errCode = obj.getString("errCode");

        if(errCode.equalsIgnoreCase("-1")){
            JSONObject object = obj.getJSONObject("scheme");
            JSONObject object1 = object.getJSONObject("mobile");
            String state = object1.getString("state");
            String operator = object1.getString("operator");
            String operator_imag = object1.getString("operator_img");
            System.out.println("lenghtsima>>>>"+(object1.length()-3)+"");
            numberOfPlans = (object1.length())-3;

            for(int i = positionInNumber; i<=positionInNumber;i++) {
                //  System.out.println("Object>>>>"+object1.length()+" objectdata>>"+object1.getJSONObject(Integer.toString(i)));
                JSONObject object2 = object1.getJSONObject(Integer.toString(i));
                String plan_name = object2.getString("plan_name");
                String plan_id = object2.getString("plan_id");
                String operator_plan_id = object2.getString("operator_plan_id");

                app_detail = new HashMap<String, String>();
                app_detail.put("plan_name",plan_name);
                app_detail.put("plan_id",plan_id);
                app_detail.put("operator_plan_id", operator_plan_id);
                applist.add(app_detail);

                JSONArray jsonArray = object2.getJSONArray("planlists");
                for(int j = 0; j<jsonArray.length();j++) {
                    //    System.out.println("ARRAY>>"+jsonArray.length()+" jsonarray="+jsonArray.toString());
                    JSONObject object3 = jsonArray.getJSONObject(j);
                    JSONObject object4 = object3.getJSONObject("OpreatorPlan");
                    String amount = object4.getString("amount");
                    String id = object4.getString("id");
                    String description = object4.getString("description");
                    String validity = object4.getString("talk_time");
                    String recommend_flag = object4.getString("recommend_flag");

                    plan_details = new HashMap<String, String>();
                    plan_details.put("amount",amount);
                    plan_details.put("id",id);
                    plan_details.put("description",description);
                    plan_details.put("validity",validity);
                    plan_details.put("recommend_flag",recommend_flag);
                    planlist.add(plan_details);

                }
            }
        }
        System.out.println("apppppp=" + planlist.toString());

        dialog();

    } catch (Exception e) {
        e.printStackTrace();
    }

}

这是我的日志：

01-16 18:47:21.302 30604-30604/com.example.admin.smsrupee E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.admin.smsrupee, PID: 30604
    java.lang.IllegalStateException: The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. Make sure your adapter calls notifyDataSetChanged() when its content changes. [in ListView(2131558551, class android.widget.ListView) with Adapter(class com.example.admin.smsrupee.BrowseOperatorsPlans$Adapter)]
        at android.widget.ListView.layoutChildren(ListView.java:1565)
        at android.widget.AbsListView.onTouchUp(AbsListView.java:3843)
        at android.widget.AbsListView.onTouchEvent(AbsListView.java:3604)
        at android.view.View.dispatchTouchEvent(View.java:7782)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2316)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2013)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2322)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2027)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2322)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2027)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2322)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2027)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2322)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2027)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2322)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2027)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2322)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2027)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2322)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2027)
        at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2109)
        at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1541)
        at android.app.Activity.dispatchTouchEvent(Activity.java:2491)
        at android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:60)
        at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2057)
        at android.view.View.dispatchPointerEvent(View.java:7973)
        at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4549)
        at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4420)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3966)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4016)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3985)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4092)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3993)
        at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4149)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3966)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4016)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3985)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3993)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3966)
        at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:6298)
        at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:6261)
        at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:6215)
        at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6443)
        at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
        at android.os.MessageQueue.nativePollOnce(Native Method)
        at android.os.MessageQueue.next(MessageQueue.java:138)
        at android.os.Looper.loop(Looper.java:150)
        at android.app.ActivityThread.main(ActivityThre
01-16 18:48:10.828 30604-30676/com.example.admin.smsrupee D/dalvikvm: threadid=15: exiting
01-16 18:48:10.829 30604-30676/com.example.admin.smsrupee D/dalvikvm: threadid=15: detach (group=0x4183bce0)
01-16 18:48:10.829 30604-30676/com.example.admin.smsrupee D/dalvikvm: threadid=15: removing from list
01-16 18:48:10.830 30604-30676/com.example.admin.smsrupee D/dalvikvm: threadid=15: bye!
01-16 18:52:21.343 30604-30604/com.example.admin.smsrupee I/P

---

问题是在

Adapterr

类中保持对

planlist

的引用，因此当调用

planlist.clear（）

方法时，将引发此异常。因此，当每次调用

dialog（）

方法时实例化适配器时，可以避免在

Adapterr

类中保留对

planlist

的引用，例如：

    public Adapterr(Context context,ArrayList<HashMap<String, String>> applist){
        this.list1 = new ArrayList<HashMap<String, String>>(applist);
        this.context = context;
    }

公共适配器（上下文，ArrayList应用程序列表）{ this.list1=新的ArrayList（应用列表）； this.context=上下文； }

---

它应该可以按预期工作

在

onPostExecute

中尝试以下操作：

new Handler().post(new Runnable() 
        {

            @Override
            public void run() 
            {
                dialog();
            }
        });

---

希望ti能帮助您

从这些日志的外观上看，UI线程上也没有这样的情况。您是否尝试过使用runonuithread内置方法？

    public Adapterr(Context context,ArrayList<HashMap<String, String>> applist){
        this.list1 = new ArrayList<HashMap<String, String>>(applist);
        this.context = context;
    }

new Handler().post(new Runnable() 
        {

            @Override
            public void run() 
            {
                dialog();
            }
        });