如何重新启动iDevice？

Question

I am trying to make an app to respring and reboote any iDevice. My code works fine in the iOS Simulator but on my iDevice nothing happens (Yes, it is jailbroken).

Here is my code for respiring:

        if(system("killall SpringBoard"));

        if(system("killall -9 SpringBoard"));

        if (system([@ "reboot" UTF8String]));

        if ([[[UIDevice currentDevice] systemVersion] hasPrefix:@"2."])
            notify_post("com.apple.language.changed");

        if (system([@ "killall SpringBoard" UTF8String]));

and here is my code for rebooting:

if (system([@ "reboot" UTF8String]));

respring only works one time and than it stops working:(

My Script:

#!/bin/sh

#  Script.sh
#  Respring
#
#  Created by David on 08.11.12.
#  Copyright (c) 2012 David. All rights reserved.

app binary - root:wheel 4755

script - root:wheel 0755

C=/${0}
C=${C%/*}
declare -a flags
[[ :${DYLD_INSERT_LIBRARIES}: == */MobileSubstrate.dylib: ]] && flags[${flags[@]}]=--substrate
exec "${C:-.}"/Respring "${flags[@]}" -- "$@" 2>>/tmp/Respring.log

This is my alertView for respring and reboot with BugReport if respiring doesn't function

//Respring

-(IBAction)respring {

    UIAlertView *respring=[[UIAlertView alloc]initWithTitle:@"Respring"
                                                     message:@"Do you want to respring your iDevice?"
                                                    delegate:self
                                           cancelButtonTitle:@"No"
                                           otherButtonTitles:@"Yes", nil];
    respring.tag = 1;       
    [respring show];
}


//AlertView   
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {

    if (buttonIndex == 1){            
        if (alertView.tag ==1) {            
            setuid(0); system("killall i5MMS_");                

            UIAlertView *respringerror=[[UIAlertView alloc]initWithTitle:@"Error"
                                                                message:@"Respring is not possible, please send me an Bug Report."
                                                               delegate:self
                                                      cancelButtonTitle:@"OK"
                                                      otherButtonTitles:@"Send Bug Report",nil];                
                respringerror.tag = 3;                
                [respringerror show];                
        }

        if (alertView.tag ==2) {                
            if (system([@ "reboot" UTF8String]));

            UIAlertView *respringerror=[[UIAlertView alloc]initWithTitle:@"Error"
                                                                 message:@"Rebooting is not possible, please send me an Bug Report."
                                                                delegate:self
                                                       cancelButtonTitle:@"OK"
                                                       otherButtonTitles:@"Send Bug Report", nil];

            respringerror.tag = 4;                
            [respringerror show];            
        }                

    if (alertView.tag ==3) {            
        iDevice.text = [UIDevice currentDevice]. model;            
        ios.text = [UIDevice currentDevice]. systemVersion;            
        MFMailComposeViewController *composer = [[MFMailComposeViewController alloc] init];            
        [composer setMailComposeDelegate:self];            
        if ([MFMailComposeViewController canSendMail]) {                
            [composer setToRecipients:[NSArray arrayWithObjects:@"david.goelzhaeuser@me.com", nil]];                
            [composer setSubject:@"Bug Report"];                
            [composer setMessageBody: [NSString stringWithFormat: @"%@ \n%@ \n%@", ios.text,iDevice.text, jailbreakstatus.text]isHTML:NO];                
            [composer setModalTransitionStyle:UIModalTransitionStyleCoverVertical];                
            [composer setModalPresentationStyle:UIModalPresentationFormSheet];                
            [self presentModalViewController:composer animated:YES];
        }

    }

    if (alertView.tag ==4) {

        iDevice.text = [UIDevice currentDevice]. model;            
        ios.text = [UIDevice currentDevice]. systemVersion;            
        MFMailComposeViewController *composer = [[MFMailComposeViewController alloc] init];            
        [composer setMailComposeDelegate:self];    
        if ([MFMailComposeViewController canSendMail]) {                
            [composer setToRecipients:[NSArray arrayWithObjects:@"david.goelzhaeuser@me.com", nil]];                
            [composer setSubject:@"Bug Report"];
            [composer setMessageBody: [NSString stringWithFormat: @"%@ \n%@ \n%@", ios.text,iDevice.text, jailbreakstatus.text]isHTML:NO];                
            [composer setModalTransitionStyle:UIModalTransitionStyleCoverVertical];                
            [composer setModalPresentationStyle:UIModalPresentationFormSheet];                
            [self presentModalViewController:composer animated:YES];
        }


        }
    }
}


//Reboot

-(IBAction)reboot;{        
    UIAlertView *reboot=[[UIAlertView alloc]initWithTitle:@"Reboot"
                                                    message:@"Do you want to reboot your iDevice? If you have a tethered jailbreak you have to make a tethered boot after rebooting!"
                                                    delegate:self
                                                    cancelButtonTitle:@"No"
                                                    otherButtonTitles:@"Yes", nil];

    reboot.tag = 2;        
    [reboot show];        
}

Answer 1

EXAMPLE

I will name my app Respring

In my app code I have an RespringViewController.h and RespringViewController.m

Inside of the ResringViewController.h I will add a button to call my respring action.

#import <UIKit/UIKit.h>

@interface RespringViewController : UIViewController
//Creates the button
- (IBAction) respring:(id)sender;

@end

Now inside of RespringViewController.m

#import "RespringViewController.h"

@interface RespringViewController ()

@end

@implementation RespringViewController
//This calls the button created in RespringViewController.h
- (IBAction) respring: (id) sender {
setuid(0); system("killall SpringBoard");
}
//This makes the view for the button programmatically
UIButton *button9 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button9 addTarget:self
                action:@selector(respring:)
      forControlEvents:UIControlEventTouchUpInside];
    button9.frame = CGRectMake(96.0, 262.0, 130.0, 37.0);
    button9.adjustsImageWhenDisabled = YES;
    button9.adjustsImageWhenHighlighted = YES;
    button9.alpha = 1.000;
    button9.autoresizesSubviews = YES;
    button9.autoresizingMask = UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleBottomMargin;
    button9.clearsContextBeforeDrawing = YES;
    button9.clipsToBounds = NO;
    button9.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
    button9.contentMode = UIViewContentModeScaleToFill;
    button9.contentStretch = CGRectFromString(@"{{0, 0}, {1, 1}}");
    button9.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
    button9.enabled = YES;
    button9.hidden = NO;
    button9.highlighted = NO;
    button9.multipleTouchEnabled = NO;
    button9.opaque = NO;
    button9.reversesTitleShadowWhenHighlighted = NO;
    button9.selected = NO;
    button9.showsTouchWhenHighlighted = NO;
    button9.tag = 0;
    button9.titleLabel.font = [UIFont fontWithName:@"Helvetica-Bold" size:15.000];
    button9.titleLabel.lineBreakMode = UILineBreakModeMiddleTruncation;
    button9.titleLabel.shadowOffset = CGSizeMake(0.0, 0.0);
    button9.userInteractionEnabled = YES;
    [button9 setTitle:NSLocalizedString(@"APPLY SETTINGS", nil) forState:UIControlStateNormal];
    [button9 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [button9 setTitleColor:[UIColor colorWithWhite:1.000 alpha:1.000] forState:UIControlStateHighlighted];
    [button9 setTitleShadowColor:[UIColor colorWithWhite:0.500 alpha:1.000] forState:UIControlStateNormal];

//Adds the button to the view
[view addSubview:button9];

Now I go ahead and build it and get a file called Respring.app

Inside of Respring.app there are for example these files

Info.plist

Icon.png

Respring

I have to rename Respring inside of Respring.app to Respring_

Now I have to upload the script below to /path/to/Respring.app/

#!/bin/bash
C=/${0}
C=${C%/*}
declare -a flags
[[ :${DYLD_INSERT_LIBRARIES}: == */MobileSubstrate.dylib: ]] && flags[${#flags[@]}]=--substrate
exec "${C:-.}"/Respring_ "${flags[@]}" -- "$@" 2>>/tmp/Respring.log

and name it Respring

You will now need to fake code sign the binary using the tool ldid

You can download it here

From the terminal use the following command

sudo ldid -S /path/to/Respring.app/Respring_

Be sure to sign the binary not the script

The correct permissions have to be in place for the script to launch app as root user from terminal you can run this

sudo chown 0:0 /path/to/Respring.app/Respring*

sudo chmod 0755 /path/to/Respring.app/Respring

sudo chmod 4755 /path/to/Respring.app/Respring_

Everything is all set now and you can launch the app, any logs will be stored inside of /tmp/Respring.log of your device now and you can use the button to respring.