java - 无法使 json 对 recyclerview 有效

Question

我正在尝试使用 Gson 和 recyclerview 进行 JSON 处理。我的 JSON 不完全有效。在我的 JSON 中，food 字段只有一个字符串被引用，而另一个则不被引用。请参阅下面我的 JSON...

[

    {"quantity" = 2, 
    "price" = 15, 
    "food" = "Fried" Rice}, 

    {"quantity" = 2,
    "price" = 20,
    "food" = "Rice" and Stew}

    ]

您可以看到 Fried 有引号，而 Rice 没有引号，同样，Rice 和 Stew 也有同样的情况。最初是这样的......

[

    {quantity = 2, 
    price = 15, 
    food = Fried Rice}, 

    {quantity = 2,
    price = 20,
    food = Rice and Stew}

    ]

我的 Activity 类代码...

Bundle extras = getIntent().getExtras();

    if (extras != null) {
        String listOfFood = extras.getString("foods");
        listOfFood = listOfFood.replaceAll("([\\w]+)[ ]*=", "\"$1\" ="); // to quote before = value
        listOfFood = listOfFood.replaceAll("=[ ]*([\\w@\\.]+)", "= \"$1\""); // to quote after = value, add special character as needed to the exclusion list in regex
        listOfFood = listOfFood.replaceAll("=[ ]*\"([\\d]+)\"", "= $1"); // to un-quote decimal value
        listOfFood = listOfFood.replaceAll("\"true\"", "true"); // to un-quote boolean
        listOfFood = listOfFood.replaceAll("\"false\"", "false"); // to un-quote boolean

        Log.d(TAG, "onCreate: "+listOfFood);

        GsonBuilder builder = new GsonBuilder();
        Gson mGson = builder.create();
        List<FoodOrder> posts = new ArrayList<FoodOrder>();
        posts = Arrays.asList(mGson.fromJson(listOfFood, FoodOrder[].class));
        adapter = new RecyclerViewAdapter(FoodsOrderedActivity.this, posts);
        recyclerView.setAdapter(adapter);
    }

我需要将炒饭放在引号之间的食品字段，作为米饭和炖菜的引号，或者是否有解决方法，我想知道。

谢谢

Answer 1

基于您的代码。 (尝试将 listOfFood 转换为 JSON )我修改了你的两行代码如下

        listOfFood = listOfFood.replaceAll("(\\s*)([^{,\\s]+)(\\s*)=","$1\"$2\"$3:"); // to quote before = value and replace = by :
        listOfFood = listOfFood.replaceAll("(:\\s*)([^\\s,{}](\\s*[^\\s,{}]+)*)", "$1\"$2\""); // to quote after = value (= now became :)