Android parse json get org.json.JSONException error

Question

    String jsonStr = HelperInputStream.convertInputStreamToString(inputStream);
    if (jsonStr == null) {
        return;
    }
    String code,message = "";
    try {
        JSONObject object = new JSONObject(jsonStr);
        Log.e("code:" , object.getString("subject"));

jsonStr结果是：

[{"code":"1","subject":"you have new message"}]

不幸的是，我得到此错误是catch：

org.json.JSONException: Value [{"subject":"you have new message","code":"1"}] of type org.json.JSONArray cannot be converted to JSONObject

在服务器中，我只有以下代码：

<?php
    echo json_encode(array(
        array(
            'code'=>'1',
            'subject'=>"you have new message",
        )
    ));
?>

Answer 1

subject键在JSONArray内部的JSONObject中，所以从jsonStr字符串中获取JSONArray：

JSONArray arrJSON = new JSONArray(jsonStr);
JSONObject object=arrJSON.getJSONObject(0);
Log.e("code:" , object.getString("subject"));