【代碼】Androidの代碼片斷

UI

• SightFragment: Fragment 用戶初見處理。
  • 常見於 ViewPager 預加載先後頁面，但但願頁面等用戶可見時才加載內容。
• TokenActivity: Activity 恰當彈窗時機。
• TransparentStatusBarActivity: 全透明狀態欄。

狀態

• AppLifecycle: Application 先後臺及 Activity 生命期處理。

工具

追蹤

• Log: 日誌打印。可添加通道，輸出到文件。
• CrashHandler: 崩潰處理。將會記錄奔潰日誌到文件。

系統

• Helper for accessing os properties: 系統屬性訪問：SystemProperties、build.prop。
• Helper for 3rd party roms: 第三方 ROM 兼容：Flyme、MIUI。

硬件

• The bluetooth listener and profile proxy: 藍牙開關、監聽，以及操做系統藍牙配置。

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Tips

• View id should be unique in the hierarchy. Otherwise, save and restore state may occur exception.

  • Reference:
    • View保存狀態的過程分析
    • 重用LAYOUT致使的狀態保存問題

• android.app.Fragment should not use TranslateAnimation to set relative translation.

  • Solution: android.app.Fragment should use Animator, however android.support.v4.app.Fragment should use Animation.
  • Reference:
    • Fragments translate animation
    • Android Activity和Fragment的轉場動畫

• Set GATT characteristic notification properly.

  • Solution: Must set the client configuration descriptor.
  • Reference:
    • Receiving GATT Notifications
    • Android BLE API: GATT Notification not received
    • Descriptors of GATT Specifications

Bugs

• Android Issues

• android animation is not finished in onAnimationEnd

• LocationListener of NETWORK_PROVIDER is enabled, but onLocationChanged is never called