App Idle 相关流程图

UserActionsReceiver

DeviceStateReceiver

强制进入 idle

After 24 hours

postParoleEndTimeout

MSG_REPORT_EVENT

AppIdleHistory.updateDisplayLocked

informListeners

deviceIdle

postParoleStateChanged

!deviceIdle && timeSinceLastParole = mAppIdleParoleIntervalMillis

监听电量的变化

Y

packageHistory.lastUsedScreenTime = getScreenOnTimeLocked(elapsedRealtime) - mScreenOnTimeThresholdpackageHistory.lastUsedElapsedTime = getElapsedTimeLocked(elapsedRealtime) - mElapsedTimeThreshold

如果充电状态发生了变化，发送该广播

监听屏幕亮灭

idle

reportContentProviderUsage

After timeLeft

mScreenOnDuration += elapsedRealtime - mScreenOnSnapshot;mElapsedDuration += elapsedRealtime - mElapsedSnapshot;mElapsedSnapshot = elapsedRealtime;

DisplayManager.DisplayListener

设置下一次进入假释状态的消息，每一次假释状态的进入相隔 24 小时

MSG_CHECK_PAROLE_TIMEOUT

MSG_PAROLE_STATE_CHANGED

LocalService

isAppIdleUnfiltered

用户被自动后，会触发 idle 检查

调整时间变量！

isAppIdleFiltered

Intent.ACTION_USER_STARTED

informParoleStateChanged

AppIdleStateChangeListener.onParoleStateChanged

不是 device idle 状态（doze 模式），且距离上次假释状态超过了 24 hours，进入假释状态

checkParoleTimeout

setChargingState

AppIdleHistory.setIdleLocked

ScreenOn

否则就继续延迟进入假释

reportEvent

mAppIdleTempParoled = paroled;

如果距离上一次进入假释状态超过了 24 小时，那么就进入假释

AppIdleHistory.setIdle

MSG_PAROLE_END_TIMEOUT

checkIdleStates

判断是否进入 idle 状态

idle 状态的条件

N

setAppIdleParoled(false)

MSG_INFORM_LISTENERS

假释状态只能持续 10 mins，设置用于退出假释状态的消息

isParoledOrCharging

forceIdleState

postCheckIdleStates

setAppIdleParoled(true)

是 device idle 状态，退出假释！

packageHistory.lastUsedElapsedTime = mElapsedDuration + (elapsedRealtime - mElapsedSnapshot);packageHistory.lastUsedScreenTime = getScreenOnTimeLocked(elapsedRealtime);

onDeviceIdleModeChanged

ScreenOnSnapshot = elapsedRealtime

onDisplayChanged

Intent.ACTION_BATTERY_CHANGED

AppIdleHistory.isIdleLocked

every 8 hours

PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED

处理假释状态的变化

long timeLeft = (mLastAppIdleParoledTime + mAppIdleParoleIntervalMillis) - checkAndGetTimeLocked();

MSG_REPORT_CONTENT_PROVIDER_USAGE

MSG_CHECK_IDLE_STATES

long timeSinceLastParole = checkAndGetTimeLocked() - mLastAppIdleParoledTime;

判断是否是充电或者是假释状态变化了

After 10 mins

监听设备状态

timeSinceLastParole mAppIdleParoleIntervalMillis

postNextParoleTimeout

AppIdleHistory.hasPassedThresholdsLocked

通知所有的 app idle 监听器

AppIdleHistory.reportUsageLocked

设置充电状态

监听 doze 模式的状态

更新 app 使用信息