source: Developing Android Apps - Udacity

• Course provide by Udacity
• Course build by Google.

Command Line Shell For SQLite

Datatypes in SQLite Version 3

Git

Android is a full software stack

Application Layer

• (my app)
• Application Framework
  • C/C++ Libs
  • Android Runtime
    • Linux Kernel
      • (handles low level tasks: hardware fibers, panel management)

Android project

• --> Build(Gradle)
  • (Gradle)
  • Byte code
  • resources
    • : images, strings, uixml in to an application package
  • Manifest
  • APK
    • apk: a specially formatted zip file
• --> (Jar signer) Sign
• --> (ADB) Install on Device

Layout:

• frame layout
• linear layout
• relative layout
• always use the simplest layout which can get the job done!

Frame Layout:

• simple layouts
• with a single view or
• stack or
• views
• views are all aligned against the frame boundaries only

Linear Layout:

• perfect for stacking views vertically or horizontally, one after another.

Relative Layout:

• powerful but more complicated
• sophisticated layout that allows the positioning of views relative to other views relative to other views or the boundaries of the view.