- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    #if DEBUG

        [[NSBundle bundleWithPath:@"/Applications/InjectionIII.app/Contents/Resources/iOSInjection.bundle"] load];

    #endif

    return YES;

}

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

     self.view.backgroundColor = [UIColor redColor];

}

- (void)injected {

　　//此处的代码想怎么写就怎么写，完事了按下Ctrl+S保存一下就能再模拟器里面看到刚刚改的代码了，是不是很神奇？

    self.view.backgroundColor = [UIColor blueColor];

}