UIImagePickerController causes crash on ios5 - iphone

Question

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
UINavigationController *HomeNav = [[UINavigationController alloc] initWithRootViewController:[[HomeController alloc] init]];
[HomeNav.navigationBar setTintColor:[UIColor clearColor]];
CustomTabBar *tabBar = [[CustomTabBar alloc] init];
tabBar.buttonImages = [NSArray arrayWithObjects:#"t1.png" , nil];
tabBar.hightLightButtonImages = [NSArray arrayWithObjects:#"th1.png", nil];
tabBar.viewControllers = [NSArray arrayWithObjects:HomeNav , nil];
self.tabBarController = tabBar;
[tabBar release];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
in HomeController view, there is one button
if tap the button I call `AViewController.
-(IBAction)tapButtonA:(id)sender;
{
[self.navigationController pushViewController:AViewController animated:YES];
}
there is also a button on the view of AViewController.
if I tap the button, I call UIImagePickercontroller
-(IBAction)tapButtonB:(id)sender;
{
UIImagePickerController *picker=[[UIImagePickerController alloc]init];
picker.delegate=self;
picker.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;
picker.allowsImageEditing = YES;
[self presentModalViewController: picker animated:NO];
}
If I tap the cancel button of the UIImagePickerController
-(void)imagePickerControllerDidCancel:(UIImagePickerController*)picker{
[self.presentingViewController dismissModalViewControllerAnimated:YES];
}
the UIImagePicker will dismiss, but after 1,2 seconds the app crashes and displays
Welcome any comment

Answer 1

Following code is solve your problem,
#pragma mark - UIActionsheet Delegate method
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
switch (buttonIndex) {
case 0:
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
self.imagePicker = [[UIImagePickerController alloc] init];
self.imagePicker.delegate = self;
self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
self.imagePicker.allowsEditing = NO;
self.imagePicker.mediaTypes =[UIImagePickerController availableMediaTypesForSourceType:self.imagePicker.sourceType];
[self presentModalViewController:self.imagePicker animated:YES];
}
else{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Error"
message:#"Unable to connect camera."
delegate:self cancelButtonTitle:#"Ok"
otherButtonTitles:nil];
[alert show];
}
break;
case 1:
self.imagePicker = [[UIImagePickerController alloc] init];
self.imagePicker.delegate = self;
self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
self.imagePicker.mediaTypes =[UIImagePickerController availableMediaTypesForSourceType:self.imagePicker.sourceType];
[self presentModalViewController:self.imagePicker animated:YES];
break;
default:
break;
}
}
#pragma mark - UIImagePicker Delegate method
- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
// Access the uncropped image from info dictionary
UIImage *image = [info objectForKey:#"UIImagePickerControllerOriginalImage"];
self.imgForEvent=image;
// // Save image
// if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
// UIImageWriteToSavedPhotosAlbum(image, self, #selector(image:didFinishSavingWithError:contextInfo:), nil);
// }
[self dismissModalViewControllerAnimated:YES];
}
- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
{
UIAlertView *alert;
// Unable to save the image
if (error)
alert = [[UIAlertView alloc] initWithTitle:#"Error"
message:#"Unable to save image to Photo Album."
delegate:self cancelButtonTitle:#"Ok"
otherButtonTitles:nil];
else // All is well
alert = [[UIAlertView alloc] initWithTitle:#"Success"
message:#"Image saved to Photo Album."
delegate:self cancelButtonTitle:#"Ok"
otherButtonTitles:nil];
[alert show];
[self.imagePicker dismissModalViewControllerAnimated:YES];
}
This code may helping to solveing your problem

Answer 2

I think you want:
-(void) imagePickerControllerDidCancel:(UIImagePickerController*)picker {
[picker.presentingViewController dismissModalViewControllerAnimated:YES];
}

Answer 3

try this
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[picker dismissModalViewControllerAnimated:YES];
}