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RSS订阅转载 Measuring Power Values
Device manufacturers must provide a component power profile in /frameworks/base/core/res/res/xml/power_profile.xml.To determine values for power profiles, use hardware that measures the power being used by the device and perform the various operations fo
2021-10-11 23:42:13
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转载 TV Standby
In Android 11, inattentive sleep is a power-saving feature that allows a user inactivity timeout to be set after which the screen turns off, even if windows with FLAG_KEEP_SCREEN_ON are visible or wakelocks of level FULL_WAKE_LOCK, SCREEN_BRIGHT_WAKE_LOCK
2021-10-11 23:10:41
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转载 Routine Battery Saver
Android 10 introduces a battery saver schedule option called based on routine. This option allows an app chosen by the OEM to provide signals to the system for more intelligent battery saver scheduling. This option requires configuration, and is optional t
2021-10-11 23:08:38
351
转载 Measuring Device Power
You can determine device power consumption for Android devices that include a battery fuel gauge such as a Summit SMB347 or Maxim MAX17050 (available on many Nexus devices). Use the in-system gauge when external measurement equipment is not available or is
2021-10-11 23:05:09
181
转载 Measuring Device Power
You can determine device power consumption for Android devices that include a battery fuel gauge such as a Summit SMB347 or Maxim MAX17050 (available on many Nexus devices). Use the in-system gauge when external measurement equipment is not available or is
2021-10-11 23:04:39
156
转载 Measuring Component Power
You can determine individual component power consumption by comparing the current drawn by the device when the component is in the desired state (on, active, scanning, etc.) and when the component is off. Measure the average instantaneous current drawn on
2021-10-11 23:01:43
193
转载 Batteryless Devices
Supporting Batteryless DevicesThis page describes how Android handles products that have either removable batteries or no internal batteries. The latter devices are instead connected to an external power source, such as an AC power outlet or USB port on
2021-10-11 22:59:30
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转载 Performance Management
Managing the power and performance of Android devices can help ensure applications run consistently and smoothly on a wide range of hardware. In Android 7.0 and later, OEMs can implement support for sustained performance hints that enable apps to maintain
2021-10-11 22:57:29
352
转载 Platform Power Management
To improve device battery life, Android can affect the device state by monitoring device use and wakefulness. The platform can enter a state of sleep to pause activities from running while the device is unused.DozeDoze extends battery life by deferring
2021-10-11 22:54:58
1035
转载 App Power Management
In Android 9 and higher, the platform can monitor apps for behavior that negatively affects the battery life of devices. The platform uses and evaluates setup rules to provide a UX flow that gives users the option to restrict apps that violate the rules.
2021-10-11 22:38:03
353
转载 Power Stats HAL
Device subsystem power is often measured and recorded in a lab environment for various steady-state conditions, such as when the screen is on, or the device is in an idle power state. This works for subsystems with a constant power draw, or under condition
2021-10-11 22:29:09
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转载 Thermal Mitigation
Thermal mitigation is needed when a device starts to overheat. As algorithm complexity, system core frequencies, and levels of integration continually increase, with packaging and form-factor sizes decreasing, thermal mitigation has become increasingly imp
2021-10-11 22:19:05
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转载 Power Management
Battery life is a perennial user concern. To extend battery life, Android continually adds new features to help the platform optimize the off-charger behavior of applications and devices.Android includes the following battery life enhancements:App Rest
2021-10-11 22:11:20
334
转载 Overview
Power Profiles for AndroidBattery use information is derived from battery use statistics and power profile values.Battery use statisticsThe framework automatically determines battery use statistics by tracking how long device components spend in diff
2021-10-11 21:56:55
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转载 Power
OverviewPower ManagementThermal MitigationPower Stats HALApp ManagementPlatform ManagementPerformance ManagementBatteryless DevicesComponent PowerDevice PowerPower ValuesRoutine Battery SaverTV Standby
2021-10-11 21:54:05
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