Android User Interface & 開發的觀念

Layouts and Views relationship

There are several main layouts that we use more frequently than others, such as LineLayout, TableLayout, FrameLayout, RelativeLayout, and AbsoluteLayout. 



Design Philosophy 

Small increments.
Always whole and complete.
Refactoring code.


is-a : is a kind of .  這個是繼承概念。
has-a : A has a B . 聚合 Aggregation & 或組合Composition 的概念.

What-you-see-iswhat-you-get (WYSIWYG).


onCreate( ) =>activity 觸發點，我們都會一直override 這段code , 如同Template Pattern.
Loggin in Android :
.d() is for debug level.
.e() for error.
.w() for warning.
.i() for info.

LogCat,
DDMS stands for Dalvik Debug Monitor Server.


 keyword.
ActivityManager.

O'REILLY  Learning Android.