java ParseQuery from字段未保存

Question

ItemCount字段不工作

CategoryModel构造的ItemCount=0不起作用

ParseObject parseObjectCategory = Categorylist.get(i);

                        ParseQuery<ParseObject> query = ParseQuery.getQuery("List");
                        query.whereEqualTo("parent", parseObjectCategory);

                        query.findInBackground(new FindCallback<ParseObject>() {
                            public void done(List<ParseObject> scoreList, ParseException e) {
                                if (e == null) {
                                    itemCount = scoreList.size();
                                    Log.e("ItemCountGENERAL",""+itemCount);
                                } else {
                                    Log.e("Aldaa","---------------------------------------------------------------");
                                }
                                itemCount = scoreList.size();
                            }
                        });

                        Log.e("ItemCount",""+itemCount);

                        if(name.equals("Inbox")){
                            categoryMode1= new CategoryModel(itemData,name,R.drawable.ic_inbox, itemCount);
                        }else if(name.equals("Stared")){
                            categoryMode1= new CategoryModel(itemData,name,R.drawable.ic_stars, itemCount);
                        }else{
                            categoryMode1= new CategoryModel(itemData,name,R.drawable.ic_inbox, itemCount);
                        }

                        mainData.add(categoryMode1);
                        mainAdapter.notifyDataSetChanged();
                    }`

我的形象：

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Answer 1

你应该添加这些代码

                    if(name.equals("Inbox")){
                        categoryMode1= new CategoryModel(itemData,name,R.drawable.ic_inbox, itemCount);
                    }else if(name.equals("Stared")){
                        categoryMode1= new CategoryModel(itemData,name,R.drawable.ic_stars, itemCount);
                    }else{
                        categoryMode1= new CategoryModel(itemData,name,R.drawable.ic_inbox, itemCount);
                    }

                    mainData.add(categoryMode1);
                    mainAdapter.notifyDataSetChanged();` 

进入FinalCallback。 因为调用的是未初始化的字段，所以itemCount得到了0itemCount在FinalCallback中得到了它的值，该线程在一个单独的非UI线程中运行，这意味着访问它的UI线程可以在非UI线程之前运行。因此，您应该将使用从parse检索到的数据的逻辑移动到FinalCallback