android 实现代码关机
开始从网上搜索,通过发action的方式实现,不过一直没有成功。
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SHUTDOWN);
sendBroadcast(intent);
加权限
<uses-permission android:name="android.permission.SHUTDOWN" tools:ignore="ProtectedPermissions" />
若有成功的同学,希望留言相告,谢谢。
这里介绍我自己的方法。
1. power服务实现了关机功能
framework/base/services/java/com/android/server/power/PowerManagerService.java
/**
* Shuts down the device.
*
* @param confirm If true, shows a shutdown confirmation dialog.
* @param wait If true, this call waits for the shutdown to complete and does not return.
*/
@Override // Binder call
public void shutdown(boolean confirm, boolean wait) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null);
final long ident = Binder.clearCallingIdentity();
try {
shutdownOrRebootInternal(true, confirm, null, wait);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
2. PowerManager提供了reboot等接口,没有提供shutdown接口。
若是重启,实现就很简单:
PowerManager pm = (PowerManager)this.getSystemService(Context.POWER_SERVICE);
pm.reboot();
但是shutdown没有实现,PowerManager的实现通过IPowerManager来调用Power服务的接口。
IPowerManager是AIDL文件自动生成的类,便于远程通信。IPowerManage.aidl文件目录framework/base/core/java/android/os/IPowerManage.aidl
3. IPowerManager实现了shutdown接口,这里只要获得Power服务的IBinder,通过反射调用shutdown方法就能实现关机功能。
ServiceManager管理着系统的服务程序,它保存着所有服务的IBinder,通过服务名就能获取到这个服务的IBinder。
而ServiceManager这个类也是HIDE的,也需要反射进行调用。
代码实现:
[java] view plaincopyprint?
try {
//获得ServiceManager类
Class<?> ServiceManager = Class
.forName("android.os.ServiceManager");
//获得ServiceManager的getService方法
Method getService = ServiceManager.getMethod("getService", java.lang.String.class);
//调用getService获取RemoteService
Object oRemoteService = getService.invoke(null,Context.POWER_SERVICE);
//获得IPowerManager.Stub类
Class<?> cStub = Class
.forName("android.os.IPowerManager$Stub");
//获得asInte易做图ce方法
Method asInte易做图ce = cStub.getMethod("asInte易做图ce", android.os.IBinder.class);
//调用asInte易做图ce方法获取IPowerManager对象
Object oIPowerManager = asInte易做图ce.invoke(null, oRemoteService);
//获得shutdown()方法
Method shutdown = oIPowerManager.getClass().getMethod("shutdown",boolean.class,boolean.class);
//调用shutdown()方法
shutdown.invoke(oIPowerManager,false,true);
} catch (Exception e) {
Log.e(TAG, e.toString(), e);
}
try {
//获得ServiceManager类
Class<?> ServiceManager = Class
.forName("android.os.ServiceManager");
//获得ServiceManager的getService方法
Method getService = ServiceManager.getMethod("getService", java.lang.String.class);
//调用getService获取RemoteService
Object oRemoteService = getService.invoke(null,Context.POWER_SERVICE);
//获得IPowerManager.Stub类
Class<?> cStub = Class
.forName("android.os.IPowerManager$Stub");
//获得asInte易做图ce方法
Method asInte易做图ce = cStub.getMethod("asInte易做图ce", android.os.IBinder.class);
//调用asInte易做图ce方法获取IPowerManager对象
Object oIPowerManager = asInte易做图ce.invoke(null, oRemoteService);
&
补充:移动开发 , Android ,