[問題] 新手發問

[push583 (阿昌)]

Which level: (app/frmwrk/lib/kernel)


Question: 


Input: 


Expected Output: 


Wrong Output: 


Code: (請多利用置底文網站) 


References: (Books/Websites/...) 


Supplement: 


小弟最近自學於Android上開發,常常遇到需要傳遞Context類別參數傳遞,
對於Context類別敘述原文如下 :

Class Overview
Interface to global information about an application environment.
This is an abstract class whose implementation is provided by
 the Android system. It allows access to application-specific
resources and classes, as well as up-calls for application-level
operations such as launching activities, broadcasting and
receiving intents, etc

依小弟認知,他是指這類別靠Android系統實現,去允許存取特殊應用的資源跟類別,
要求應用層級操作，如啟動activities、broadcasting和接收intents等,但是
還是有點難以理解,是否有人可以白話一點解釋Context的作用?

另外,傳遞Context context這種參數時(如PendingIntent.getActivity
(Context context, int requestCode, Intent intent, int flags)
...等等)為什麼可以用this傳遞?

謝謝大家~~

PS:我是幫朋友PO的,若高手有見解再請回覆到以下mail
[email protected]



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推 nowar100:1. 千萬不要用這種爛標題，上次有人這樣用，結果...
→ nowar100:2. 因為 Activity 有繼承到 Context，所以傳 this 即可
→ nowar100:最後碎碎唸一下  求助發問還要別人主動寄信到您信箱
→ nowar100:這是討論板阿 老大  不是求神問卦區阿...   :(
推 yienge:看來原PO還兼BBS新手 發問格式也不合喔ˇˇ