JSON Parsing - Developing Android AppsYouTube↗  IA↗(long shot)
Education  7.3K views 7 likes 1 dislikes   23 Feb 2015
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We want the FetchWeatherTask to return an array of string forecasts.
Ta muốn FetchWeatherTask phải trả về một mảng string,
This means we need to modify the return type of the AsyncTask to be
Có nghĩa là ta cần phải sửa return type của AsyncTask
a string array.
thành một string array.
The effect of this is that the doInBackground method will now return
Điều này làm cho doInBackground method cũng phải return
a string array.
một string array.
In this method, after we query the server and
Trong method này, sau khi ta hỏi server
then read in the input stream, we're going to perform this code.
và lấy vào input stream, ta sẽ thực hiện code này.
To parse the response from the server, we call getWeatherDataFromJson.
Để phân tích những thứ server trả về, ta gọi getWeatherDataFromJson.
We pass in the forecast JSON string, as well as the number of forecast days.
Ta truyền vào forecast JSON string, cũng như số ngày dự báo.
To make sure that this is returning the right string array,
Để đảm bảo rằng nó sẽ trả về string array đúng,
we can go into the method, and then at the bottom of the method, we just add
ta có thể vào trong method, sau đó ở cuối method, ta chỉ việc
some logging statements to print out every element of the string array.
thêm vài logging statements để in ra mỗi element của string array.
Now, when you compile the code and run it on your device,
Giờ. khi bạn compile the code và chạy nó trên thiết bị,
you can hit the Refresh button to pull the data from the server.
bạn có thể nhấn Refresh button để lấy dữ liệu từ server về.
Then, if you open up log cat, you can see that it was parsed correctly,
Sau đó, nếu bạn ở log cat, bạn có thể thấy rằng nó đã được parse chính xác,
where you see all the forecast entries being printed out.
ở đây bạn thấy toàn bộ nội dung thời tiết đã được in ra.
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