Crash wen tapping "Open on Instagram" when using UIDocumentInteractionController

Question

I have a class:

.h file:

#import <Foundation/Foundation.h>

@interface CHTInstagramSharer : NSObject<UIDocumentInteractionControllerDelegate>
@property (nonatomic, retain) UIDocumentInteractionController *dic;
-(void) sharePic:(UIImage *)image;
@end

.m file

#import "CHTInstagramSharer.h"
#import <UIKit/UIKit.h>
#import "BaseController.h"

@implementation CHTInstagramSharer


-(void) sharePic:(UIImage *)image{    

    NSString * jpgPath = [Utils saveImage:image toFile:@"cover.igo"];
    NSURL *url = [NSURL fileURLWithPath:jpgPath];
    self.dic = [UIDocumentInteractionController interactionControllerWithURL: url];
    self.dic.UTI = @"com.instagram.exclusivegram";
    self.dic.delegate = self;
    self.dic.annotation = [NSDictionary dictionaryWithObject:@"Caption Test" forKey:@"InstagramCaption"];
    [self.dic presentOpenInMenuFromRect:CGRectMake(0, 0, 320, 44)    inView:[BaseController sharedInstance].view animated: YES ];
}
@end

It represents a controller with the option "Open on Instagram", but when I click on it, the application crashes.

Any idea why?

Additional information, when I look at the url in the debugger, I get: File: //localhost/var/mobile/Applications/53435781-3BAB-4B02-A80C-FC088F696AE8/Library/Caches/cover.igo

The crash seems to happen in [_UIOpenWithAppActivity performActivity] when I look at the stack trace.

Answer 1

It looks like you are not saving the document controller. I use Instagram hook as follows:

EDIT: ARC

- (void)sharePic:(UIImage *)image {

    NSString *documentsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:@"Image.ig"];
    NSData *imageData = UIImageJPEGRepresentation(image, 0.8);
    [imageData writeToFile:savedImagePath atomically:YES];
    NSURL *imageUrl = [NSURL fileURLWithPath:savedImagePath];

    UIDocumentInteractionController *docController = [UIDocumentInteractionController interactionControllerWithURL:imageUrl];
    [docController retain];
    docController.UTI = @"com.instagram.exclusivegram";
    docController.delegate = self;
    docController.annotation = [NSDictionary dictionaryWithObject:@"Caption Test" forKey:@"InstagramCaption"];
    [docController presentOpenInMenuFromRect:CGRectZero inView:self.view animated:YES];
    docController = nil;
}

, .

Answer 2

, , UIDocumentInteractionController *docController @interface !

@interface ViewController ()
{
 UIDocumentInteractionController * docController;
}
@end 

- (void)sharePic:(UIImage *)image {

NSString *documentsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:@"Image.ig"];
NSData *imageData = UIImageJPEGRepresentation(image, 0.8);
[imageData writeToFile:savedImagePath atomically:YES];
NSURL *imageUrl = [NSURL fileURLWithPath:savedImagePath];

docController = [UIDocumentInteractionController interactionControllerWithURL:imageUrl];
[docController retain];
docController.UTI = @"com.instagram.exclusivegram";
docController.delegate = self;
docController.annotation = [NSDictionary dictionaryWithObject:@"Caption Test" forKey:@"InstagramCaption"];
[docController presentOpenInMenuFromRect:CGRectZero inView:self.view animated:YES];
docController = nil;
}

, !:)