根据JSON响应

Question

添加文本我将收到包含这一个JSON响应：

{..."Weekday":[3,4,2],...} //numbers might not be in Ascending order 

然后根据什么“平日”里我会打印出周日0周一1等。所以上面打印的文字是;

"Tuesday,Wednesday,Thursday" //This should be in ascending order 

如何检查和打印我想要什么，我这样做的方式是这样的：

JSONObject obj = new JSONObject(result); //result from backend 
JSONObject DayOff = obj.getJSONObject("Weekday"); 

... 

tvWeekdays = (TextView) getActivity().findViewById(R.id.tvWeekdays); 
tvWeekdays.setText("The final result"); 

我不知道用怎样做到这一点，我想到的也许while循环或if语句会有帮助吗？

--- UPDATE ---

  JSONArray array = obj.getJSONArray("Weekday"); 
     if (array == null){ 

      tvDayOff = (TextView) getActivity().findViewById(R.id.tvDayOff); 
      tvDayOff.setText("None"); 
     } 
     // Create an int array to accomodate the numbers. 
     int[] numbers = new int[array.length()]; 
     Arrays.sort(numbers); 
     // Extract numbers from JSON array. 
     for (int i = 0; i < array.length(); ++i) { 
      numbers[i] = array.optInt(i); 
      System.out.println(
        DateFormatSymbols.getInstance().getWeekdays()[numbers[i]] 
      ); 

     } 

Answer 1

这里是如何得到这取决于区域的值一个简单的例子：

public static void main(String[] args){ 
    for(int i = 0; i < 7; ++i) 
     System.out.println(
      DateFormatSymbols.getInstance().getWeekdays()[i+1] //First cell is empty... 
     ); 
} 

这是我的输出（在法语语言环境） ：

dimanche //Sunday 
lundi //Monday 
mardi 
mercredi 
jeudi 
vendredi 
samedi //Saterday 

由此看来，你只需要订购您使用Arrays.sort(int[])整数数组，并获得字符串。

如果不使用JSON，这会就像这样：

public static void main(String[] args){ 
    int[] array = {3, 5, 2}; //The array 
    Arrays.sort(array);  //Sort the array 
    for(int i = 0; i < array.length; ++i) //Loop on the result 
    System.out.println(
     DateFormatSymbols.getInstance().getWeekdays()[array[i]] 
    ); 
} 

最后一步将是获取数组，对于这一点，我建议你阅读this answer

编辑：

你不能在一个循环中完成。您首先需要获取值然后对数组进行排序。一旦做到这一点，你可以得到的字符串以正确的顺序

// Create an int array to accomodate the numbers. 
int[] numbers = new int[array.length()]; 
    // Extract numbers from JSON array. 
for (int i = 0; i < array.length(); ++i) { 
     numbers[i] = array.optInt(i); 
} 
Arrays.sort(numbers); 
for (int i = 0; i < numbers.length; ++i) { 
    System.out.println(
     DateFormatSymbols.getInstance().getWeekdays()[numbers[i]] 
    ); 
} 

Answer 2

JSONObject obj = new JSONObject(result); //result from backend 
    JSONArray DayOff = obj.getJSONArray("Weekday"); // I think weekday is an array 
// if weekday look like {"weekday":[2,4,3]}, its an array if so 
String[] dayText = new String[DayOff.length()]; 
for(int i=0, len=DayOff.length(); i<len; i++){ 
switch (DayOff(i)) { 
      case 0: dayText[i] = "Sunday"; 
        break; 
      case 1: dayText[i] = "Monday"; 
        break; 
      case 2: dayText[i] = "Tuesday"; 
        break; 
} 
} 

试试这个..