Android 解析没有键的简单 JSON 数组
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Parse simple JSON Array without key
提问by Zookey
I need help with parsing simple JSONArray like this:
我需要帮助解析这样的简单 JSONArray：
{
"text":[
"Morate popuniti polje tekst."
]
}
I have tried with this but I failed:
我试过这个，但我失败了：
if (response_str != null) {
try {
JSONObject jsonObj = new JSONObject(response_str);
JSONArray arrayJson = jsonObj.getJSONArray("text");
for (int i = 0; i < arrayJson.length(); i++) {
JSONObject obj = arrayJson.optJSONObject(i);
error = obj.getString("text");
}
}
回答by dharms
Your JSONArrayis an array of Strings. You can iterate this way
你JSONArray是一个字符串数组。你可以这样迭代
JSONObject jsonObj = new JSONObject(response_str);
JSONArray arrayJson = jsonObj.getJSONArray("text");
for (int i = 0; i < arrayJson.length(); i++) {
String error = arrayJson.getString(i);
// Do something with each error here
}
回答by Raghunandan
You have a JSONArraytext. There is no array of JSONObject.
你有一个JSONArray文本。没有数组JSONObject。
{ // Json object node
"text":[ // json array text
"Morate popuniti polje tekst." // value
]
}
Just use
只需使用
for (int i = 0; i < arrayJson.length(); i++) {
String value = arrayJson.get(i);
}
In fact there is no need for a loop as you have only 1 element in json array
实际上不需要循环，因为 json 数组中只有 1 个元素
You can just use
你可以使用
String value = (String) arrayJson.get(0); // index 0 . need to cast it to string
Or
或者
String value = arrayJson.getString(0); // index 0
http://developer.android.com/reference/org/json/JSONArray.html
http://developer.android.com/reference/org/json/JSONArray.html
public Object get (int index)
Added in API level 1
Returns the value at index.
Throws
JSONException if this array has no value at index, or if that value is the null reference. This method returns normally if the value is JSONObject#NULL.
public boolean getBoolean (int index)
getString
getString
public String getString (int index)
Added in API level 1
Returns the value at index if it exists, coercing it if necessary.
Throws
JSONException if no such value exists.
回答by matiash
Try this:
尝试这个：
JSONObject jsonObject = new JSONObject(response_str);
JSONArray arrayJson = jsonObject.getJSONArray("text");
String theString = arrayJson.getString(0);
