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Android 9 includes
android.hardware.health
HAL 2.0,a major version upgrade from [email protected] HAL. This new HAL has the followingadvantages:- Cleaner separation between framework and vendor code.
- Deprecates the unnecessary
healthd
daemon. - Greater degrees of freedom for vendor customization in health informationreports.
- More device health information than just battery.
What's new version 1.0.18.0? -Fixed the bug with horizontal alignment struck at 27 What's new version 1.0.17.0? -Notify when charging/discharging -Performance enhancements -Fixed the bug with 0% What's new version 1.0.14.0? -Bold the icon text -Performance enhancements -Raise notifications as needed -Rate the app 1.0.13.0? ? Designed to keep your battery in the best shape you can – AndroidHeadlines Accu Battery protects battery health, displays battery usage information, and measures battery capacity (mAh) based on science. BATTERY HEALTH Batteries have a limited lifespan. Every time you charge your device, it wears out the battery, lowering its total capacity.
Android 11 includes
android.hardware.health
HAL 2.1,a minor version upgrade from [email protected] HAL. This new HAL has the followingadvantages:- Easier to implement
- Better conformance with existing 2.0 HAL APIs
- Better Treble separation in off-mode charging code
- Better support for the framework to indicate the battery health of the device
Requirements
Devices launching with Android 9 must provide the 2.0HAL (and must not provide the 1.0 HAL). Devices not launching with Android9 but planning to update the vendor image to TargetFramework Compatibility Matrix Version 3 (released in Android9) must remove existing 1.0 HAL implementations andprovide the 2.0 HAL.
Devices launching with Android 11 must provide the 2.1HAL (and must not provide the 1.0 or 2.0 HAL). Devices not launching withAndroid 11 but planning to update the vendor image toTarget Framework Compatibility Matrix Version 5 (released in Android11) must remove existing 2.0 HAL implementations andprovide the 2.1 HAL. Devices not launching with Android11 and not planning to update the vendor image are alsorecommended to provide the 2.1 HAL.
AOSP includes multiple helper libraries designed to help you implement the 2.1HAL and the transition from the old 1.0 HAL.
Terminology
- [email protected]: abbreviation of
[email protected]
. Refers tohealth HIDL HAL version 1.0 released in Android 8.0. - [email protected]: abbreviation of
[email protected]
. Refers tohealth HIDL HAL version 2.0 released in Android 9. - [email protected]: abbreviation of
[email protected]
. Refers tohealth HIDL HAL version 2.1 released in Android 11. - charger: executable running in off-mode charging that displays thephone-charging animation.
- recovery: executable running in recovery mode that must retrieve batteryinformation.
- healthd: legacy daemon running in Android that retrieves health-relatedinformation and provides it to framework.
- storaged: daemon running in Android that retrieves storage informationand provides it to framework.
Health in Android 8.x
In Android 8.x, the health component works as detailed in the following diagram:
Figure 1. Health in Android 8.x
In this diagram:
- One (1) binder call and one (1) hwbinder call are used by the framework tocommunicate with hardware.
healthd
statically links tolibhealthd_android
,libbatterymonitor
, andlibbatteryservice
.- [email protected] statically links to
libhealthd.BOARD
.
Eazydraw 9 1 6 0. Each board can customize a different
libhealthd.BOARD
;it is determined at build time what charger, [email protected], and recovery linkto.For other modes: Memorytamer 1 5 0 – automatic memory freeing apple watch.
Figure 2. Health in Android 8.x, off-mode charging and recovery mode
- charger statically links to
libhealthd.BOARD
,libhealthd_charger
andlibbatterymonitor
. - recovery statically links to
libhealthd.BOARD
andlibbatterymonitor
.
Health in Android 9
In Android 9, the health component works as detailedin the following diagram:
![Free Free](https://www.iphonetricks.org/wp-content/uploads/2021/09/iPhone-12-Battery-Health-dropping-fast-1200x720.jpg)
Figure 3. Health in Android 9
The framework attempts to retrieve [email protected] service from
Note: For the legacy code path, the processes/libraries will be kept [email protected] isdeprecated.hwservicemanager
.If it fails, it calls into [email protected] (in Android 8.x). The legacy code path iskept so the Android 9 system image is compatible withthe Android 8.x vendor image. The framework does not retrieve information fromboth HALs because only one service version (1.0 or 2.0) can exist on the device.For other modes:
Figure 4. Health in Android 9, off-mode chargingand recovery mode
Health in Android 11
In Android 11, the health component works as detailedin the following diagram:
If the health 2.1 implementation doesn't exist, the system falls back to thelegacy code path as described in previous sections
For other modes:
HAL interface 2.0
The [email protected] HAL provides the same functionality to the framework as the oldhealthd daemon. It also provides APIs that are similar to what healthdpreviously provided as a binder service (i.e.IBatteryPropertiesRegistrar).
The main interface,IHealth , provides the following functions:
registerCallback
, to replaceIBatteryPropertiesRegistrar.registerListener
unregisterCallback
, to replaceIBatteryPropertiesRegistrar.unregisterListener
update
, to replaceIBatteryPropertiesRegistrar.scheduleUpdate
IBatteryPropertiesRegistrar.getProperties
are replaced by the following:getChargeCounter
getCurrentNow
getCurrentAverage
getCapacity
getEnergyCounter
getChargeStatus
getHealthInfo
In addition,
IHealth
provides the following new APIs for storaged
toretrieve vendor-specific storage related information:getStorageInfo
getDiskStats
A new struct,
@2.0::HealthInfo
, is returned via callbacks and getHealthInfo
.This struct contains all device health information available through [email protected], including:- Charging information (AC/USB/wireless, current, voltage, etc.)
- Battery information (presence, battery level, current, voltage, charge,technology, etc.)
- Storage information (storage device information, disk statistics)
HAL interface 2.1
The [email protected] HAL supports off-mode charging and provides more informationabout the battery.
The main interface,IHealth,provides the following additional functions
getHealthConfig
: to retrieve the configuration of this HALgetHealthInfo_2_1
: a minor version upgrade togetHealthInfo
shouldKeepScreenOn
: to determine whether the screen should be kept on incharger mode
In addition, the implementation of
@2.1::IHealth
is required to support@2.1::IHealthInfoCallback
for its inherited registerCallback
andunregisterCallback
functions. The new callback interface returns healthhealth information to the client using its healthInfoChanged_2_1
functioninstead of the inherited healthInfoChanged
function.A new struct,
@2.1::HealthInfo
, is returned via callbacks andgetHealthInfo_2_1
. This struct contains additional device health informationavailable through [email protected] HAL, including:- Battery capacity level
- Battery charge time to full now (in seconds)
- Battery full charge design capacity (in μAh)
Omnigraffle pro 6 5 3 download free. For information on implementing the Health service, seeImplementing Health.
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![Health Health](https://static.macupdate.com/products/42271/m/battery-health-2-logo.png?v=1608106362)
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