在android的裝置中如果我們想重啟手機或者關機或，一般是需要在原始碼的環境下編譯apk，並賦予其相應地系統許可權，而如果想喚醒裝置則需要wakelack。原始碼編譯APP還是比較麻煩的，不過由於android的核心屬於linux,那麼在獲取root許可權的android裝置商自然可以使用linux的開關機，喚醒休眠命令。

    （1）重啟裝置

	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();
		}
	}
 

    （2）休眠裝置

	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();
		}
	}
 

	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();
	}
 

	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();
		}
	}