Android cw适配器的java.lang.IllegalStateException

首先，感谢

Commonware

提供了这个伟大的组件。但我有一个问题，这一直让我伤心一些时候。也就是-->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，而是从UI线程修改的。

以上是我有时会遇到的错误，但有时不是。下面是我的代码

 protected boolean cacheInBackground() {

                  JSONObject json = null;
                  if(results != null)
                     results.clear();

                  results = new ArrayList<DataSource>();// results is the global variable which is List<DataSource> results; and initialized it here.

                  List<NameValuePair> params = new ArrayList<NameValuePair>();

                   params.add(new BasicNameValuePair("postdata",passeddata));
                   params.add(new BasicNameValuePair("currentpage", (++index)+""));

            json = jParser.makeHttpRequest(urlphp, "POST", params);   // Here is the line that makes http request for paginated results based on index and gets the response.
                  try {
                        int success = json.getInt("success");

                        if (success == 1) {

                            rowcount = json.getInt("numrows");

                            Log.d("row count value is>>>>",""+rowcount); // Here rowcount is the total rows in the database

                            products = json.getJSONArray("products");

                            // looping through All Products
                            for (int i = 0; i < products.length(); i++) {
                                JSONObject c = products.getJSONObject(i);

                              // Storing each json item in variable
                            String id = c.getString(ID);
                            String price = c.getString(PRICE);
                            String name = c.getString(NAME);

                DataSource data = new DataSource(id,name,price);

                            results.add(data);


                        }
                    }else{
                          // product not found

                        successpass = success;
                        message = json.getString("message");

                          return false;

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

                  return(getWrappedAdapter().getCount()<rowcount);


          }


     @Override
      protected void appendCachedData() {
        if (getWrappedAdapter().getCount()<rowcount) {
          @SuppressWarnings("unchecked")
          CustomListAdapter adapter = (CustomListAdapter)getWrappedAdapter();

          //ArrayAdapter<Integer> a=(ArrayAdapter<Integer>)getWrappedAdapter();

            for (DataSource d : results){
                adapter.add(d);
            }

        }else{

        }
      }

---

终于有人给了我一个可复制的测试用例，这个bug从v1.2.1开始就被修复了。拿一份新的回购协议，或者一个新的罐子。v1.2.0版不需要更改代码。

请发布整个堆栈跟踪。@commonware我从未想过我可以直接感谢您。非常感谢你。我用堆栈跟踪更新了我的问题。我认为只有你能解决我的问题。发生错误的唯一方法是在后台线程上修改适配器的内容

EndlessAdapter

不应该这样做，这意味着要么你自己在其他地方做，要么

EndlessAdapter

中有一个bug。为了有希望修复这样一个bug，我需要一个可重复的测试用例。如果您碰巧创建了一个可重复的测试用例，请将它（以及使用它所需的步骤）附加到@commonware上，但我在上面粘贴了详细的代码。如图所示，数据仅通过此行adapter添加到appendCachedData（）中的适配器中。add（d）；：（我仍然不知道是什么导致了这个错误。如何制作一个可复制的测试用例？因为它在我的应用程序中发生过几次。“如何制作一个可复制的测试用例？”--如果我知道的话，我会自己做的。我从来没有遇到过这个错误。因此，我没有办法修复它，因为即使我随机更改代码，我也不知道这些随机更改是否真的有用。这是导致崩溃的原因吗？即使在我测试的时候。但我想我是随机得到的。无论如何，我要包括新的jar并测试它。Th我非常感谢你的回帖。

03-13 16:12:07.662: E/AndroidRuntime(494): FATAL EXCEPTION: main
03-13 16:12:07.662: E/AndroidRuntime(494): 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. [in ListView(2130968671, class android.widget.ListView) with Adapter(class com.example.onlinedata.ORAdsList$CustomisedEndlessAdapter)]
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.widget.ListView.layoutChildren(ListView.java:1492)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.widget.AbsListView.onLayout(AbsListView.java:1147)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.view.View.layout(View.java:7035)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1249)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1125)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1042)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.view.View.layout(View.java:7035)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.view.View.layout(View.java:7035)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1249)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1125)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1042)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.view.View.layout(View.java:7035)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.view.View.layout(View.java:7035)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.view.View.layout(View.java:7035)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.view.ViewRoot.performTraversals(ViewRoot.java:1045)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.view.ViewRoot.handleMessage(ViewRoot.java:1727)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.os.Handler.dispatchMessage(Handler.java:99)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.os.Looper.loop(Looper.java:123)
03-13 16:12:07.662: E/AndroidRuntime(494):  at android.app.ActivityThread.main(ActivityThread.java:4627)
03-13 16:12:07.662: E/AndroidRuntime(494):  at java.lang.reflect.Method.invokeNative(Native Method)
03-13 16:12:07.662: E/AndroidRuntime(494):  at java.lang.reflect.Method.invoke(Method.java:521)
03-13 16:12:07.662: E/AndroidRuntime(494):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-13 16:12:07.662: E/AndroidRuntime(494):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
03-13 16:12:07.662: E/AndroidRuntime(494):  at dalvik.system.NativeStart.main(Native Method)