Android利用root权限开关机、休眠和唤醒

在android的设备中如果我们想重启手机或者关机或，一般是需要在源码的环境下编译apk，并赋予其相应地系统权限，而如果想唤醒设备则需要wakelack。源码编译APP还是比较麻烦的，不过由于android的内核属于linux,那么在获取root权限的android设备商自然可以使用linux的开关机，唤醒休眠命令。

（1）重启设备

public void restart() {  try {Process process = Runtime.getRuntime().exec("su");DataOutputStream out = new DataOutputStream(process.getOutputStream());out.writeBytes("reboot \n");out.writeBytes("exit\n");out.flush();} catch (IOException e) {e.printStackTrace();}}

首先获取root权限，然后直接调用linux的reboot，android设备会立即重启。

（2）休眠设备

public void hibernate(){try {Process process = Runtime.getRuntime().exec("su");DataOutputStream out = new DataOutputStream(process.getOutputStream());out.writeBytes("echo mem > /sys/power/state \n");out.writeBytes("exit\n");out.flush();} catch (IOException e) {e.printStackTrace();}}

（3）唤醒设备

public void wakeup(){try {Process process = Runtime.getRuntime().exec("su");DataOutputStream out = new DataOutputStream(process.getOutputStream());out.writeBytes("echo on > /sys/power/state \n");out.writeBytes("exit\n");out.flush();} catch (IOException e) {e.printStackTrace();}KeyguardManager keyguardManager = (KeyguardManager)getSystemService(KEYGUARD_SERVICE);KeyguardLock keyguardLock = keyguardManager.newKeyguardLock("");keyguardLock.disableKeyguard();}

（4）设备关机

private void shutdown() {try {Process process = Runtime.getRuntime().exec("su");DataOutputStream out = new DataOutputStream(process.getOutputStream());out.writeBytes("reboot -p\n");out.writeBytes("exit\n");out.flush();} catch (IOException e) {e.printStackTrace();}}

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