[Android] 解析 JSON

從其他 api 拿回來(如: URLConnection)的 JSON字串可大略分為兩種

1.
String result = [
    "_id": "123",
    "username": "Andro"
]

[AJAX] Echo PHP Array by JSON

雖然 jQuery AJAX 中，要 echo string 回去，
但天真地試圖傳 array 回去，會cannot convert an array to a string
所以請使用

• In PHP:
  • json_encode
  • json_decode
  In JavaScript:
  • JSON.stringify
  • JSON.parse

[python] Parsing, Decoding, Read json

Referencing: parsing json python, python json decoding
These two article should be clear enough! 這兩篇應該就蠻清楚的了!

* JSON objects behave like dictionaries, JSON format is a list containing objects
-> access object by json[object], and len(json) would get the length of json
-> using iterator on a dictionary, hence can be used on json format.
get keys by simple dict.keys(), get values by simple dict.values()
http://www.python.org/dev/peps/pep-3106/