Question

I can not access UIImagePickerController defined in AppDelegate.I already defined UIImagePickerController object in AppDelegate.h file also used its delegate. This is my code.

AppDelegate.m

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

    picker = [[UIImagePickerController alloc] init];  
    picker.delegate = self; 
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    picker.wantsFullScreenLayout = YES;
    picker.allowsEditing=NO;

    return YES;
} 

And I am using action sheet in viewcontroller file and want to perform this action as –

viewController.m

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
switch (actionSheet.tag) 
    {
        case 1:
            switch (buttonIndex)
        {
            case 0:
            {
AppDelegate *appDelegate = (AppDelegate*) [[UIApplication sharedApplication] delegate];
                [appDelegate.window.rootViewController presentModalViewController:appDelegate.picker animated:YES];
                    }
           }
     }
}

But image picker controller view is not showing.

Answer 1

in your

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex 

don’t write

 [appDelegate.window.rootViewController presentModalViewController:appDelegate.picker animated:YES];

instead try to write

 [appDelegate.window presentModalViewController:appDelegate.picker animated:YES];

Let me know it is working or not.!!!
Happy Coding!!!!!