Solution 1: By adding UISupportedInterfaceOrientations

        platroms/ios/{ProjectName}/{ProjectName-info.plist

        add these lines:

        For Iphone:



<key>UISupportedInterfaceOrientations</key>
                <array>
                  <string>UIInterfaceOrientationPortrait</string>
                  <string>UIInterfaceOrientationLandscapeLeft</string>
                  <string>UIInterfaceOrientationPortraitUpsideDown</string>
                  <string>UIInterfaceOrientationLandscapeRight</string>
                </array>
        For Ipad:



<key>UISupportedInterfaceOrientations~ipad</key>
                <array>
                  <string>UIInterfaceOrientationPortrait</string>
                  <string>UIInterfaceOrientationLandscapeLeft</string>
                  <string>UIInterfaceOrientationPortraitUpsideDown</string>
                  <string>UIInterfaceOrientationLandscapeRight</string>
                </array>

Solution 2:

In the latest version of iOS6 shouldAutorotateToInterfaceOrientation is not used in iOS 6.0 .

Instead of shouldAutorotateToInterfaceOrientation we use the shouldAutorotate

- (BOOL)shouldAutorotate {
    return YES;
}

And also please make sure that in

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

must be set the viewController as rootviewcontroller

self.window.rootViewController = self.navigationController;


-(BOOL)shouldAutorotate
{
    return [[self.viewControllers lastObject] shouldAutorotate];
}

-(NSUInteger)supportedInterfaceOrientations
{
    return [[self.viewControllers lastObject] supportedInterfaceOrientations];
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return [[self.viewControllers lastObject] preferredInterfaceOrientationForPresentation];
}

Solution 3:

you can add this to your config.xml:

<preference name="phonegap-version" value="2.1.0" />