I have a cell presenting a Passcode change view controller when tapped.
else if (indexPath.row == 2) {
//Change passcode
NSString *passcode = [[NSUserDefaults standardUserDefaults] stringForKey:#"passcode"];
PAPasscodeViewController *passcodeViewController = [[PAPasscodeViewController alloc] initForAction:PasscodeActionChange];
passcodeViewController.delegate = self;
passcodeViewController.passcode = passcode;
passcodeViewController.simple = YES;
[self presentViewController:passcodeViewController animated:YES completion:nil];
break;
}
a delegate callback method to dismiss the Passcode change view controller when hit cancel:
- (void)PAPasscodeViewControllerDidCancel:(PAPasscodeViewController *)controller {
[self dismissViewControllerAnimated:YES completion:nil];
// [self.presentingViewController dismissViewControllerAnimated:YES completion:nil];
// [self.navigationController popViewControllerAnimated:YES];
}
it does not however dismiss the Passcode change view controller when hit the cancel button even though xcode debug hits the code. I tried [self.presentingViewController dismissViewControllerAnimated:YES completion:nil]; it didn't work either. The presentingViewController property is nil.
It worked perfectly on iOS 6 before. Anyone ran into this problem before? Thanks
Your can try this in PAPasscodeViewController, instead of using the delegate,.
[self removeFromParentViewController];
Related
On iOS 7 only, the navigation bar in my app does not respond to any touches after a UIImagePickerController is used and then dismissed (whether a pic has been selected or not). The screen below the navigation bar functions as normal, but it is now impossible to navigate Back in the app; the user is stuck on this screen.
I am launching the UIImagePickerController from code, though the rest of the app is laid out in storyboards.
UIImagePickerController *mediaUI = [[UIImagePickerController alloc] init];
mediaUI.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
mediaUI.mediaTypes = [NSArray arrayWithObject:(NSString *) kUTTypeImage];
mediaUI.allowsEditing = NO;
mediaUI.delegate = self;
[controller presentModalViewController: mediaUI animated: YES];
Thanks in advance for any help.
I hope you are performing these steps correctly!
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[picker dismissViewControllerAnimated:YES completion:NULL];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[picker dismissViewControllerAnimated:YES completion:NULL];
}
And when you are calling
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker animated:YES completion:NULL];
Cheers!
I noticed that the log was showing "Unbalanced calls to begin/end appearance transitions for" the launching controller. I was launching the image picker controller immediately from another controller when it appeared. This works OK on iOS 8 but there needs to be a delay on iOS 7. I fixed it by calling my method after a brief delay:
[self performSelector:#selector(takePicture) withObject:nil afterDelay:.1];
I want to launch camera when my view controller loads. I tried calling takePhoto method in viewdidload but nothing happens, what did I do wrong? I am getting the following error msg:
"Attempt to present on whose view is not in the window hierarchy!"
When I inspect element UIImagePickerController, it is nil... Interestingly, I can place a button that calls this method and when I tap the button it works fine, but not when I call it in view did load...
- (IBAction)takePhoto {
UIImagePickerController *uiipc=[[UIImagePickerController alloc]init];
uiipc.delegate=self;
uiipc.mediaTypes=#[(NSString *)kUTTypeImage];
uiipc.sourceType=UIImagePickerControllerSourceTypeCamera|UIImagePickerControllerSourceTypePhotoLibrary;
uiipc.allowsEditing=YES;
[self presentViewController:uiipc animated:YES completion:NULL];
}
Try this: Call the camera from the view did appear method:
// makeCameraOff= YES; call this in didFinishPickingMediaWithInfo method
-(void)viewDidAppear:(BOOL)animated{
if (makeCameraOff==NO){
[self performSelector:#selector(takePic) withObject:nil afterDelay:0];
}
}
-(void)takePic{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate =self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker animated:YES completion:nil];
}
I want to make the bottom button seen in the storyboard on the right to take the user to the signupstoryboard.storyboard/signupController seen on the left when the user taps on the button. How can that be done?
{ - (IBAction)signupbutton:(id)sender; SignupController *signUpView = [self.storyboard instantiateViewControllerWithIdentifier:#"signup"]; [self presentViewController:signUpView animated:YES completion:nil]; }
You'll have to do it by code.
- (IBAction)buttonTapped
{
NSString *storyboardName = #"signupstoryboard";
UIViewController *nextViewController = [[UIStoryboard storyboardWithName:storyboardName bundle:nil] instantiateInitialViewController];
// if you are using a navigation controller to push it:
[self.navigationController pushViewController:nextViewController animated:YES];
// otherwise if you are presenting it modally:
[self presentViewController:nextViewController animated:YES completion:nil]
}
In your .m (at the top)
#import "signupController.h"
In your button action method (Don't forget to set the storyboard id for your signupController as signup
- (IBAction)signupbutton:(id)sender
{
SignupController *signUpView = [self.storyboard instantiateViewControllerWithIdentifier:#"signup"]; [self presentViewController:signUpView animated:YES completion:nil];
}
Thats it
Here is my code :
if([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter])
{
SLComposeViewController *viewController = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeTwitter]; //Tell him with what social platform to use it, e.g. facebook or twitter
[viewController setInitialText:sQuotes];
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
[appDelegate.navController presentViewController:viewController animated:YES completion:nil];
[viewController setCompletionHandler:^(SLComposeViewControllerResult result)
{
NSString *output;
switch (result)
{
case SLComposeViewControllerResultCancelled:
output = #"Action Cancelled";
break;
case SLComposeViewControllerResultDone:
{
output = #"Post Successfull";
}
break;
default:
break;
}
[appDelegate.navController dismissViewControllerAnimated:YES completion:nil];
}];
}
But it Shows the warning
on whose view is not in the window hierarchy!
The warning is pretty clear. You are trying to present a modal view by a view that is not in the window hierarchy, which won't work.
Try changing this [appDelegate.navController presentViewController:viewController animated:YES completion:nil];
to something like this instead:
[appDelegate.window.rootViewController presentViewController:viewController animated:YES completion:nil];
This guarantees that the currently active root view controller of your app will be the one presenting the modal view controller.
Depending on how your AppDelegate is built you may need to add a property or just a getter to surface the window variable to the outside world.
I want to present a modal mail dialogue like so in the iPad app:
MFMailComposeViewController* picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate = self;
[picker setSubject:title];
[picker setMessageBody:[NSString stringWithFormat:[self emailBody], title, [link absoluteString]] isHTML:YES];
[self.viewController presentModalViewController:picker animated:YES];
The following delegate is called when the user sends/cancels:
- (void) mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error {
[self.viewController dismissModalViewControllerAnimated:YES];
}
This works great in portrait mode. In landscape mode the right hand pane of the UISplitViewController completely disappears.
You can only present these from the primary view of your application. In this case, presenting from the UISplitViewController works.