来自JsonArray的JsonArray

Question

想要从此链接中提取数据 - https://www.googleapis.com/books/v1/volumes?q=android&maxResults=16

这是我提取标题和作者的代码，但我可以获得标题而不是作者。

JSONObject root = new JSONObject(bookJSON);  
JSONArray bookArray = root.getJSONArray("items");
String autho = " ";

for (int i = 0; i < bookArray.length(); i++) {
    JSONObject currentBook = bookArray.getJSONObject(i);
    JSONObject volumeInfo = currentBook.getJSONObject("volumeInfo");

    String title = volumeInfo.getString("title");
    Log.i("booktitle",title);

    JSONArray auth = volumeInfo.getJSONArray("authors");
    for (int j = 0; j > auth.length(); j++) {
        autho = auth.getString(j);
        Log.i("authorname",autho);
    }
}

Answer 1

JSONArray auth = volumeInfo.getJSONArray("authors");
int len = auth.length();
for (int j = 0; j < len; j++) {
    autho = auth.get(j).toString();
    Log.i("authorname",autho);
}

您需要获取JSONArray的每个索引元素，然后将其转换为String。