Runtime.exec() : Reboot in Android?

Question

I\'m looking for a solution which can be used to reboot a rooted device. I jknow that rebooting a device is very poor design for the user, as stated here, and it\'s not real

Answer 1

I find I can not do a reboot programatically.

In addition, I can open a terminal window on my android phone using Terminal Emulator app, type su get the # prompt for root access and then type "#reboot" and I get the response "not permitted!"

Any suggestions?

OK, nevermind, I figured it out. On HTC phones the reboot command will not work even with SU root access. Need to invoke BUSYBOX to perform the reboot command.

Answer 2

After long struggle i found working solution.

If your system is used serial port then execute below command,

Runtime.getRuntime().exec(new String[]{"/system/bin/su","-c","reboot now"});

if use normal port then excure below command

Runtime.getRuntime().exec(new String[]{"/system/xbin/su","-c","reboot now"});

difference is only /bin and /xbin

so can code like if first command throw exception then execute second.

Answer 3

reboot works fine in android. you are probably not doing runtime.exec() properly. you need to handle the

    public static void rebootSU() {
    Runtime runtime = Runtime.getRuntime();
    Process proc = null;
    OutputStreamWriter osw = null;
    StringBuilder sbstdOut = new StringBuilder();
    StringBuilder sbstdErr = new StringBuilder();

    String command="/system/bin/reboot";

    try { // Run Script

        proc = runtime.exec("su");
        osw = new OutputStreamWriter(proc.getOutputStream());
                            osw.write(command);
                osw.flush();
        osw.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    } finally {
        if (osw != null) {
            try {
                osw.close();
            } catch (IOException e) {
                e.printStackTrace();                    
            }
        }
    }
    try {
        if (proc != null)
            proc.waitFor();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    sbstdOut.append(ReadBufferedReader(new InputStreamReader(proc
            .getInputStream())));
    sbstdErr.append(ReadBufferedReader(new InputStreamReader(proc
            .getErrorStream())));
    if (proc.exitValue() != 0) {
                }
        }

Answer 4

Finally after weeks of searching:

Runtime.getRuntime().exec(new String[]{"/system/bin/su","-c","reboot now"});

Answer 5

This code works on Samsung Galaxy S2, S4, Sony Xperia S (LTi 26)

public static void rebootDevice()
{
    try 
    {           
        Process process = Runtime.getRuntime().exec("su");
        DataOutputStream os = new DataOutputStream(process.getOutputStream());
        os.writeBytes("reboot \n");
    } 
    catch (Throwable t) {t.printStackTrace;}
}