Android Screen on/off flow

本文深入探讨了Android系统中屏幕开关的流程,详细介绍了从按下电源键到屏幕状态改变的整个过程。涉及PhoneWindowManager、PowerManagerServices等核心组件及其交互方式。

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Screen on/off flow

Created with Raphaël 2.1.2 PhoneWindowManager PhoneWindowManager PowerManagerServices PowerManagerServices DisplayManagerService DisplayManagerService DisplayPowerController DisplayPowerController DisplayControllerHandler DisplayControllerHandler DisplayPowerState DisplayPowerState mScreenUpdateRunnable mScreenUpdateRunnable PhotonicModulator PhotonicModulator LocalDisplayAdapter LocalDisplayAdapter SurfaceControl SurfaceControl SurfaceComposerClient SurfaceComposerClient hwcomposer.h hwcomposer.h qcom/hwc qcom/hwc powerPress interceptKeyBeforeQueueing goToSleep goToSleepInternal updatePowerStateLocked updateDisplayPowerStateLocked requestPowerState requestPowerState sendUpdatePowerStateLocked handleMessage updatePowerState animateScreenStateChange setScreenState setScreenState scheduleScreenUpdate postScreenUpdateThreadSafe removeCallbacks post setState run(mLock.notifyAll) requestDisplayState LocalService.blanker.requestDisplayState requestGlobalDisplayStateInternal updateGlobalDisplayStateLocked updateDisplayStateLocked requestDisplayStateLocked setDisplayPowerMode nativeSetDisplayPowerMode setDisplayPowerMode setPowerMode hwc_setPowerMode
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