基于android 8 分析

以BatteryService里調(diào)用IBatteryPropertiesRegistrar為例

IBinder b = ServiceManager.getService("batteryproperties");

? ? ? ? final IBatteryPropertiesRegistrar batteryPropertiesRegistrar =

? ? ? ? ? ? ? ? IBatteryPropertiesRegistrar.Stub.asInterface(b);

batteryPropertiesRegistrar.registerListener(new BatteryListener());

1.BatteryService.java位于

android\frameworks\base\services\core\java\com\android\server

2. IBatteryPropertiesRegistrar 的定義

android\frameworks\native\services\batteryservice

實(shí)現(xiàn)在

android\system\core\healthd\BatteryPropertiesRegistrar.cpp

3. java和cpp層的定義需要對(duì)應(yīng)

java層編譯

frameworks/base/Android.mk:254: core/java/android/os/IBatteryPropertiesRegistrar.aidl

java 傳遞的參數(shù)如 BatteryProperty和 BatteryProperties 實(shí)現(xiàn)Parcelable接口

PS：Camera2的接口也是java調(diào)用cpp層的binder，實(shí)現(xiàn)在

\LA.UM.6.6\LINUX\android\frameworks\base\core\java\android\hardware\camera2\CameraManager.java