JsonArray从JsonArray

Question

想从这个链接中提取数据 - https://www.googleapis.com/books/v1/volumes?q=android&maxResults=16

这是我的代码中提取标题和作者，但我能拿到冠军，但不是作者。

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); 
} 

你需要得到的JSONArray各项指标元素，然后将其转换为String。