解析json字符串时org.json.JSONObject $ 1无法转换为JSONObject错误 [英] org.json.JSONObject$1 cannot be converted to JSONObject error while parsing json string
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问题描述
对于解析json,我使用JSONArray和JsonObject:
For parsing json i use JSONArray and JsonObject:
protected void parseJson()
{
JSONObject object=null;
try {
object=new JSONObject(json);
myArray=object.getJSONArray(MY_ARRAY);
Log.e("Array Length",""+myArray.length());
key_id=new String[myArray.length()];
key_name=new String[myArray.length()];
for (int i=0;i<=myArray.length();i++)
{
JSONObject fetchObject=myArray.getJSONObject(i);
key_id[i] = fetchObject.getString(KEY_ID);
key_name[i] = fetchObject.getString(KEY_NAME);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
JSON数据:
{
"data": [{
"key": 1,
"myval": "hello"
}, {
"key": 1,
"myval": "hello"
}, {
"key": 1,
"myval": "hello"
}, null, {
"key": 1,
"myval": "hello"
}, {
"key": 1,
"myval": "hello"
}]
}
我的问题是,当fetchObject获取空对象时,它给我org.json.JSONObject$1
不能在try catch中转换为JSONObject.
请帮我如何解决这个问题.....感谢阅读....
My problem is that when fetchObject get the null object it give me org.json.JSONObject$1
cannot be converted to JSONObject in try catch .
Please help me how can i solve this.....Thanks for reading....
推荐答案
阅读JsonArray和JsonObject文档后,我了解了如何解决此问题.
After reading JsonArray and JsonObject doc i understand how to sort out this problem.
protected void parseJson()
{
JSONObject object=null;
try {
object=new JSONObject(json);
myArray=object.getJSONArray(MY_ARRAY);
Log.e("Array Length",""+myArray.length());
key_id=new String[myArray.length()];
key_name=new String[myArray.length()];
for (int i=0;i<=myArray.length();i++)
{
JSONObject fetchObject=myArray.optJSONObject(i);
if(fetchObject==null)
{
//do nothing
}
else
{
key_id[i] = fetchObject.getString(KEY_ID);
key_name[i] = fetchObject.getString(KEY_NAME);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
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