Android : org json json异常无值

Question

我用这个 json url ： https://www.theaudiodb.com/api/v1/json/1/search.php?s=coldplay

{
"artists": [
    {
        "idArtist": "111239",
        "strArtist": "Coldplay",
        "strArtistStripped": null,
        "strArtistAlternate": "",
        "strLabel": "Parlophone",
        "idLabel": "45114",
        "intFormedYear": "1996",
        "intBornYear": "1996",
        "intDiedYear": null,
        "strDisbanded": null,
        "strStyle": "Rock/Pop",
        "strGenre": "Alternative Rock",
         etc
}

这是我的 android java 代码：

    void syncToUrl() {
    AsyncHttpClient client = new AsyncHttpClient();
    String url = "https://www.theaudiodb.com/api/v1/json/1/search.php?s=coldplay";

    client.get(url, new TextHttpResponseHandler() {
        @Override
        public void onFailure(int statusCode, Header[] headers, String responseString, Throwable throwable) {
            Toast.makeText(MainActivity.this, "Error", Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onSuccess(int statusCode, Header[] headers, String responseString) {
            parseAndShow(responseString);

        }
    });
}
void parseAndShow(String responce) {
    try {
        JSONObject artistBio = new JSONObject(responce);

        artistNickname.setText(artistBio.getString("strArtist"));

    } catch (Exception e) {
        Toast.makeText(MainActivity.this, e.toString(), Toast.LENGTH_SHORT).show();
        Error.setText(e.toString());
    }
}

但我仍然收到此错误： org.json.jsonexception strArtist 没有价值。

strArtist 具有此值 "Coldplay"，但为什么会出现此错误？

Answer 1

可以得到strArtist的值如下：

JSONObject artistBio = new JSONObject(responce);
JSONArray artists = artistBio.getJSONArray("artists");

for (int i=0; i < artists.length(); i++) {
  JSONObject object = artists.getJSONObject(i);
  String name = actor.getString("strArtist");
  artistNickname.setText(artistBio.getString("strArtist"));
}

编辑

由于你的json数组里面只有一个对象，你可以跳过for循环的实现，直接使用如下：

JSONObject object = artists.getJSONObject(0);
String name = actor.getString("strArtist");
artistNickname.setText(artistBio.getString("strArtist"));

Android : org json json异常无值

Android : org json jsonexception no value for

android-fragments

jsonexception