将string arrayList转换为Integer ArrayList

Question

我有Model类ModelWeeklyGuarantee想要将字符串arrayList转换为整数arrayList

示例[5,7,9]字符串arrayList，指向0的IntegerArrayList [5,7,8]。

public static ArrayList<Integer> listOfGuarantees= new ArrayList<Integer>();
 @Override
public void onBindViewHolder(MyViewHolder holder, int position) {
    ModelWeeklyGuarantee ModelGuarantee = GauranteeList.get(position);

    JSONArray jsonArray = ModelGuarantee.getWeeklyDataList();
    Log.d("getWeeklyDataList",""+jsonArray);
    for(int i = 0, count = jsonArray.length(); i< count; i++)
    {
        try {
            JSONObject jsonObject = jsonArray.getJSONObject(i);
            //Integer abc= Integer.valueOf(jsonObject.toString());
            listOfGuarantees.add( Integer.valueOf(jsonObject.toString()));
        }
        catch (JSONException e) {
            e.printStackTrace();
        }
        Log.d("guaranteevalues",""+listOfGuarantees);
    }

getWeeklyDataList：[＆＃34; 5＆＃34;，＆＃34; 7＆＃34;，＆＃34; 9＆＃34;]

getWeeklyDataList：[＆＃34; 10＆＃34;，＆＃34; 11＆＃34;，＆＃34; 12＆＃34;]

guaranteevalues = []

  

org.json.JSONException：类型为java.lang.String的0处的值5无法转换为org.json.JSON.typeMismatch（JSON.java:100）中的JSONObject

Answer 1

你不能把字符串保存到json对象。

替换此行

JSONObject jsonObject = jsonArray.getJSONObject(i);
listOfGuarantees.add( Integer.valueOf(jsonObject.toString()));

与

String obj = jsonArray.getString(i); 
listOfGuarantees.add( Integer.valueOf(obj));

或者只需使用

listOfGuarantees.add(Integer.valueOf(jsonArray.getString(i)));

修改/更新

ArrayList<int[]> listOfGuarantees= new ArrayList<int[]>();
int[] values;
JSONArray jsonArray = ModelGuarantee.getWeeklyDataList();
Log.d("getWeeklyDataList",""+jsonArray);
for(int i = 0, count = jsonArray.length(); i< count; i++)
{
    values = new int[] { count };
    try 
    {
        String str = jsonArray.getString(i);
        values[i] = Integer.valueOf(str); 
    }
    catch (JSONException e) {
        e.printStackTrace();
    }
    Log.d("guaranteevalues",""+listOfGuarantees);
}
 listOfGuarantees.add(values);

希望有所帮助！