Hello Android & Multiscreen

2016/02/02

• Main.axml：Layout設計總管
• SetContentView(Resource.Layout.Main); = 設定主Layout檔案，此行即以Main.axml為主要Layout檔。想：可控制此項切換Layout版型？

2016/02/03

• Android程式可視為由多區塊組合而成，可分類成Activity及Service。Activity可看成一項獨立功能，而且都會對應到UI，如登入畫面或LIst清單等，Service即是背景程式，不會有畫面，如音樂播放解碼程式等。
• Intent：各Block之訊息傳遞，使用時機如camera app to take and save, gathering location information, or navigating from one screen to the next.(常用)
• 以intent方式，啟動另一個activity

•  以intent方式，Launching Another Application with an Intent
• String Resources – In our Phoneword application, we set the text of the CallHistoryButton to "@string/callHistory". The @string syntax means that the string’s value is stored in the String Resources File, Strings.xml. We entered the following value for the callHistory string in Strings.xml。
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