Android 使用反射调用自定义AIDL **.Stub.asInterface(IBinder obj)、反射实现关机shutdown

自定义AIDL调用

有时根据项目需要会增加系统没有的AIDL文件，如：
新增 com.android.internal.telephony.IVideoTelephony;

不使用反射时的调用方式如下(需依赖系统编译才能通过)：

private boolean isVTCall(){try{IVideoTelephony vtInterface = null;vtInterface = IVideoTelephony.Stub.asInterface(checkService("videophone"));if(null != vtInterface){if(vtInterface.isVtActive())return true;o}}catch(Exception e){}return false;}----------------private IBinder checkService(String name){IBinder iBinder = null;try{Class<?> clz = Class.forName("android.os.ServiceManager");Method checkService = clz.getMethod("checkService", String.class);checkService.setAccessible(true);iBinder = (IBinder)checkService.invoke(null, name);}catch(Exception e) {}return iBinder;}

使用反射调用

private boolean isVtActive(){boolean isVtActive = false;try{Class<?> clz = Class.forName("com.android.internal.telephony.IVideoTelephony$Stub");Method asInterface = clz.getDeclaredMethod("asInterface", IBinder.class);Object IVideoTelephony = asInterface.invoke(null, checkService("videophone"));Method isVtActiveMethod = IVideoTelephony.getClass().getDeclaredMethod("isVtActive",null);isVtActive = (Boolean)isVtActiveMethod.invoke(IVideoTelephony, null);}catch(Exception e){}return isVtActive;}

代码解析：
1. 首先通过Class 加载”com.android.internal.telephony.IVideoTelephony$Stub”内部类；
2. 接着调用”asInterface”方法生成Object IVideoTelephony实例；
3. 然后获取”isVtActive”方法，通过invoke将实例IVideoTelephony传入并获取返回值即可

通过反射实现关机

 public static void shutDown(){        try {            Class<?> clz = Class.forName("android.os.ServiceManager");            Method getService = clz.getMethod("getService", String.class);            Object powerService = getService.invoke(null, Context.POWER_SERVICE);            Class<?> cStub =  Class.forName("android.os.IPowerManager$Stub");            Method asInterface = cStub.getMethod("asInterface", IBinder.class);            Object IPowerManager = asInterface.invoke(null, powerService);            Method shutDown = IPowerManager.getClass().getMethod("shutdown", boolean.class, boolean.class);            shutDown.invoke(IPowerManager, false,true);        } catch (Exception e) {            Log.e("wmb", "--shutDown has an exception");            e.printStackTrace();        }    }

关机shutdown代码，亲测有效。
注意点：
调用shutDown.invoke(IPowerManager, false,true);需要系统权限，在manifest中增加android:sharedUserId=”android.uid.system”，并将应用push到/system/priv-app目录下，重启才能生效。