¿Cómo compartir una imagen en Instagram en iOS?

Mi cliente quiere compartir una imagen en Instagram, Twitter, Facebook.

He hecho Twitter y Facebook pero no encontré ninguna API ni nada en Internet para compartir imágenes en Instagram. ¿Es posible compartir imágenes en Instagram? ¿Si es así, entonces cómo?

Cuando reviso el sitio de desarrolladores de Instagram, encontré las Bibliotecas de Ruby on Rails y Python. Pero no hay documentación de iOS Sdk

Obtuve un token de Instagram según instagram.com/developer, pero ahora no sé qué hacer con el siguiente paso para compartir con la imagen de Instagram.

Finalmente obtuve la respuesta. no puedes publicar directamente una imagen en Instagram. Tienes que redirigir tu imagen con UIDocumentInteractionController.

@property (nonatomic, retain) UIDocumentInteractionController *dic;    

CGRect rect = CGRectMake(0 ,0 , 0, 0);
UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, self.view.opaque, 0.0);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIGraphicsEndImageContext();
NSString  *jpgPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/test.igo"];

NSURL *igImageHookFile = [[NSURL alloc] initWithString:[[NSString alloc] initWithFormat:@"file://%@", jpgPath]];
self.dic.UTI = @"com.instagram.photo";
self.dic = [self setupControllerWithURL:igImageHookFile usingDelegate:self];
self.dic=[UIDocumentInteractionController interactionControllerWithURL:igImageHookFile];
[self.dic presentOpenInMenuFromRect: rect    inView: self.view animated: YES ];


- (UIDocumentInteractionController *) setupControllerWithURL: (NSURL*) fileURL usingDelegate: (id <UIDocumentInteractionControllerDelegate>) interactionDelegate {
     UIDocumentInteractionController *interactionController = [UIDocumentInteractionController interactionControllerWithURL: fileURL];
     interactionController.delegate = interactionDelegate;
     return interactionController;
}

NOTA: una vez que redirige a la aplicación de Instagram, no puede volver a su aplicación. tienes que abrir tu aplicación de nuevo

Descarga la fuente desde aquí

Aquí hay un código completo probado para subir imagen + texto de leyenda a Instagram.

archivo in.h

//Instagram
@property (nonatomic, retain) UIDocumentInteractionController *documentController;

-(void)instaGramWallPost
{
            NSURL *instagramURL = [NSURL URLWithString:@"instagram://app"];
            if([[UIApplication sharedApplication] canOpenURL:instagramURL]) //check for App is install or not
            {
                NSData *imageData = UIImagePNGRepresentation(imge); //convert image into .png format.
                NSFileManager *fileManager = [NSFileManager defaultManager];//create instance of NSFileManager
                NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); //create an array and store result of our search for the documents directory in it
                NSString *documentsDirectory = [paths objectAtIndex:0]; //create NSString object, that holds our exact path to the documents directory
                NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"insta.igo"]]; //add our image to the path
                [fileManager createFileAtPath:fullPath contents:imageData attributes:nil]; //finally save the path (image)
                NSLog(@"image saved");

                CGRect rect = CGRectMake(0 ,0 , 0, 0);
                UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, self.view.opaque, 0.0);
                [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
                UIGraphicsEndImageContext();
                NSString *fileNameToSave = [NSString stringWithFormat:@"Documents/insta.igo"];
                NSString  *jpgPath = [NSHomeDirectory() stringByAppendingPathComponent:fileNameToSave];
                NSLog(@"jpg path %@",jpgPath);
                NSString *newJpgPath = [NSString stringWithFormat:@"file://%@",jpgPath];
                NSLog(@"with File path %@",newJpgPath);
                NSURL *igImageHookFile = [[NSURL alloc]initFileURLWithPath:newJpgPath];
                NSLog(@"url Path %@",igImageHookFile);

                self.documentController.UTI = @"com.instagram.exclusivegram";
                self.documentController = [self setupControllerWithURL:igImageHookFile usingDelegate:self];
                self.documentController=[UIDocumentInteractionController interactionControllerWithURL:igImageHookFile];
                NSString *caption = @"#Your Text"; //settext as Default Caption
                self.documentController.annotation=[NSDictionary dictionaryWithObjectsAndKeys:[NSString stringWithFormat:@"%@",caption],@"InstagramCaption", nil];
                [self.documentController presentOpenInMenuFromRect:rect inView: self.view animated:YES];
            }
            else
            {
                 NSLog (@"Instagram not found");
            }
}

- (UIDocumentInteractionController *) setupControllerWithURL: (NSURL*) fileURL usingDelegate: (id <UIDocumentInteractionControllerDelegate>) interactionDelegate {
    NSLog(@"file url %@",fileURL);
    UIDocumentInteractionController *interactionController = [UIDocumentInteractionController interactionControllerWithURL: fileURL];
    interactionController.delegate = interactionDelegate;

    return interactionController;
}

O

-(void)instaGramWallPost
{
    NSURL *myURL = [NSURL URLWithString:@"Your image url"];
    NSData * imageData = [[NSData alloc] initWithContentsOfURL:myURL];
    UIImage *imgShare = [[UIImage alloc] initWithData:imageData];

    NSURL *instagramURL = [NSURL URLWithString:@"instagram://app"];

    if([[UIApplication sharedApplication] canOpenURL:instagramURL]) //check for App is install or not
    {
        UIImage *imageToUse = imgShare;
        NSString *documentDirectory=[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
        NSString *saveImagePath=[documentDirectory stringByAppendingPathComponent:@"Image.igo"];
        NSData *imageData=UIImagePNGRepresentation(imageToUse);
        [imageData writeToFile:saveImagePath atomically:YES];
        NSURL *imageURL=[NSURL fileURLWithPath:saveImagePath];
        self.documentController=[[UIDocumentInteractionController alloc]init];
        self.documentController = [UIDocumentInteractionController interactionControllerWithURL:imageURL];
        self.documentController.delegate = self;
        self.documentController.annotation = [NSDictionary dictionaryWithObjectsAndKeys:[NSString stringWithFormat:@"Testing"], @"InstagramCaption", nil];
        self.documentController.UTI = @"com.instagram.exclusivegram";
        UIViewController *vc = [UIApplication sharedApplication].keyWindow.rootViewController;
        [self.documentController presentOpenInMenuFromRect:CGRectMake(1, 1, 1, 1) inView:vc.view animated:YES];
    }
    else {
        DisplayAlertWithTitle(@"Instagram not found", @"")
    }
}

y escribe esto en .plist

<key>LSApplicationQueriesSchemes</key>
    <array>
        <string>instagram</string>
    </array>

Puede utilizar uno de los esquemas de URL proporcionados por Instagram

1. Documento oficial de Instagram aquí

2. Compartir con UIDocumentInteractionController

   final class InstagramPublisher : NSObject {
   
   private var documentsController:UIDocumentInteractionController = UIDocumentInteractionController()
   
   func postImage(image: UIImage, view: UIView, result:((Bool)->Void)? = nil) {
       guard let instagramURL = NSURL(string: "instagram://app") else {
           if let result = result {
               result(false)
           }
       return
   }
       if UIApplication.sharedApplication().canOpenURL(instagramURL) {
           let jpgPath = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent("instagrammFotoToShareName.igo")
           if let image = UIImageJPEGRepresentation(image, 1.0) {
               image.writeToFile(jpgPath, atomically: true)
               let fileURL = NSURL.fileURLWithPath(jpgPath)
               documentsController.URL = fileURL
               documentsController.UTI = "com.instagram.exclusivegram"
               documentsController.presentOpenInMenuFromRect(view.bounds, inView: view, animated: true)
               if let result = result {
                   result(true)
               }
           } else if let result = result {
               result(false)
           }
       } else {
           if let result = result {
               result(false)
           }
       }
       }
   }
   

3. Compartir con redireccionamiento directo

   import Photos
   
   final class InstagramPublisher : NSObject {
   
   func postImage(image: UIImage, result:((Bool)->Void)? = nil) {
   guard let instagramURL = NSURL(string: "instagram://app") else {
       if let result = result {
           result(false)
       }
       return
   }
   
   let image = image.scaleImageWithAspectToWidth(640)
   
   do {
       try PHPhotoLibrary.sharedPhotoLibrary().performChangesAndWait {
           let request = PHAssetChangeRequest.creationRequestForAssetFromImage(image)
   
           let assetID = request.placeholderForCreatedAsset?.localIdentifier ?? ""
           let shareURL = "instagram://library?LocalIdentifier=" + assetID
   
           if UIApplication.sharedApplication().canOpenURL(instagramURL) {
               if let urlForRedirect = NSURL(string: shareURL) {
                   UIApplication.sharedApplication().openURL(urlForRedirect)
               }
           }
       }
   } catch {
       if let result = result {
           result(false)
       }
   }
   }
   }
   

4. extensión para cambiar el tamaño de la foto al tamaño recomendado

   import UIKit
   
   extension UIImage {
       // MARK: - UIImage+Resize
   
       func scaleImageWithAspectToWidth(toWidth:CGFloat) -> UIImage {
           let oldWidth:CGFloat = size.width
           let scaleFactor:CGFloat = toWidth / oldWidth
   
           let newHeight = self.size.height * scaleFactor
           let newWidth = oldWidth * scaleFactor;
   
           UIGraphicsBeginImageContext(CGSizeMake(newWidth, newHeight))
           drawInRect(CGRectMake(0, 0, newWidth, newHeight))
           let newImage = UIGraphicsGetImageFromCurrentImageContext()
           UIGraphicsEndImageContext()
           return newImage
       }
   }
   

5. No olvide agregar el esquema requerido en plist

  <key>LSApplicationQueriesSchemes</key>
  <array>
       <string>instagram</string> 
  </array>

Espero que esta respuesta resuelva su consulta. Esto abrirá directamente la carpeta de la biblioteca en Instagram en lugar de en la cámara.

NSURL *instagramURL = [NSURL URLWithString:@"instagram://app"];
if ([[UIApplication sharedApplication] canOpenURL:instagramURL])
{
    NSURL *videoFilePath = [NSURL URLWithString:[NSString stringWithFormat:@"%@",[request downloadDestinationPath]]]; // Your local path to the video
    NSString *caption = @"Some Preloaded Caption";
    ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
    [library writeVideoAtPathToSavedPhotosAlbum:videoFilePath completionBlock:^(NSURL *assetURL, NSError *error) {
        NSString *escapedString   = [self urlencodedString:videoFilePath.absoluteString];
        NSString *escapedCaption  = [self urlencodedString:caption];
        NSURL *instagramURL = [NSURL URLWithString:[NSString stringWithFormat:@"instagram://library?AssetPath=%@&InstagramCaption=%@",escapedString,escapedCaption]];
        if ([[UIApplication sharedApplication] canOpenURL:instagramURL]) {
            [[UIApplication sharedApplication] openURL:instagramURL];
        }
    }];

si no desea utilizar UIDocumentInteractionController

import Photos

...

func postImageToInstagram(image: UIImage) {
        UIImageWriteToSavedPhotosAlbum(image, self, #selector(SocialShare.image(_:didFinishSavingWithError:contextInfo:)), nil)
    }
    func image(image: UIImage, didFinishSavingWithError error: NSError?, contextInfo:UnsafePointer<Void>) {
        if error != nil {
            print(error)
        }

        let fetchOptions = PHFetchOptions()
        fetchOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: false)]
        let fetchResult = PHAsset.fetchAssetsWithMediaType(.Image, options: fetchOptions)
        if let lastAsset = fetchResult.firstObject as? PHAsset {
            let localIdentifier = lastAsset.localIdentifier
            let u = "instagram://library?LocalIdentifier=" + localIdentifier
            let url = NSURL(string: u)!
            if UIApplication.sharedApplication().canOpenURL(url) {
                UIApplication.sharedApplication().openURL(NSURL(string: u)!)
            } else {
                let alertController = UIAlertController(title: "Error", message: "Instagram is not installed", preferredStyle: .Alert)
                alertController.addAction(UIAlertAction(title: "OK", style: .Default, handler: nil))
                self.presentViewController(alertController, animated: true, completion: nil)
            }

        }
    }

Para iOS 6 y superior, puede usar esta UIActivity para cargar imágenes en Instagram, que tiene el mismo flujo de trabajo con enlaces de iOS pero simplifica el desarrollo:

https://github.com/coryalder/DMActivityInstagram

esta es la respuesta correcta que implemento con detalle. En archivo .h

 UIImageView *imageMain;
 @property (nonatomic, strong) UIDocumentInteractionController *documentController;

in.m archivo solo escribir

 NSURL *instagramURL = [NSURL URLWithString:@"instagram://app"];
 if([[UIApplication sharedApplication] canOpenURL:instagramURL])
 {
      CGFloat cropVal = (imageMain.image.size.height > imageMain.image.size.width ? imageMain.image.size.width : imageMain.image.size.height);

      cropVal *= [imageMain.image scale];

      CGRect cropRect = (CGRect){.size.height = cropVal, .size.width = cropVal};
      CGImageRef imageRef = CGImageCreateWithImageInRect([imageMain.image CGImage], cropRect);

      NSData *imageData = UIImageJPEGRepresentation([UIImage imageWithCGImage:imageRef], 1.0);
      CGImageRelease(imageRef);

      NSString *writePath = [NSTemporaryDirectory() stringByAppendingPathComponent:@"instagram.igo"];
      if (![imageData writeToFile:writePath atomically:YES]) {
      // failure
           NSLog(@"image save failed to path %@", writePath);
           return;
      } else {
      // success.
      }

      // send it to instagram.
      NSURL *fileURL = [NSURL fileURLWithPath:writePath];
      self.documentController = [UIDocumentInteractionController interactionControllerWithURL:fileURL];
      self.documentController.delegate = self;
      [self.documentController setUTI:@"com.instagram.exclusivegram"];
      [self.documentController setAnnotation:@{@"InstagramCaption" : @"We are making fun"}];
      [self.documentController presentOpenInMenuFromRect:CGRectMake(0, 0, 320, 480) inView:self.view animated:YES];
 }
 else
 {
      NSLog (@"Instagram not found");

 }

Seguro que obtendrás resultado. Por ejemplo, verá una ventana emergente desde abajo con la imagen de Instagram. Haga clic en ella y diviértase.

Probé esto en mi aplicación y está funcionando perfectamente (Swift)

import Foundation

import UIKit

class InstagramManager: NSObject, UIDocumentInteractionControllerDelegate {

    private let kInstagramURL = "instagram://"
    private let kUTI = "com.instagram.exclusivegram"
    private let kfileNameExtension = "instagram.igo"
    private let kAlertViewTitle = "Error"
    private let kAlertViewMessage = "Please install the Instagram application"

    var documentInteractionController = UIDocumentInteractionController()

    // singleton manager
    class var sharedManager: InstagramManager {
        struct Singleton {
            static let instance = InstagramManager()
        }
        return Singleton.instance
    }

    func postImageToInstagramWithCaption(imageInstagram: UIImage, instagramCaption: String, view: UIView) {
        // called to post image with caption to the instagram application

        let instagramURL = NSURL(string: kInstagramURL)
        if UIApplication.sharedApplication().canOpenURL(instagramURL!) {
            let jpgPath = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent(kfileNameExtension)
            UIImageJPEGRepresentation(imageInstagram, 1.0)!.writeToFile(jpgPath, atomically: true)
            let rect = CGRectMake(0,0,612,612)
            let fileURL = NSURL.fileURLWithPath(jpgPath)
            documentInteractionController.URL = fileURL
            documentInteractionController.delegate = self
            documentInteractionController.UTI = kUTI

            // adding caption for the image
            documentInteractionController.annotation = ["InstagramCaption": instagramCaption]
            documentInteractionController.presentOpenInMenuFromRect(rect, inView: view, animated: true)
        }
        else {

            // alert displayed when the instagram application is not available in the device
            UIAlertView(title: kAlertViewTitle, message: kAlertViewMessage, delegate:nil, cancelButtonTitle:"Ok").show()
        }
    }
}


 func sendToInstagram(){

     let image = postImage

             InstagramManager.sharedManager.postImageToInstagramWithCaption(image!, instagramCaption: "\(description)", view: self.view)

 }

Aquí está la respuesta correcta. no puede publicar una imagen directamente en Instagram. Necesita redirigir a Instagram usando UIDocumentInteractionController ...

NSString* imagePath = [NSString stringWithFormat:@"%@/instagramShare.igo", [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]];
[[NSFileManager defaultManager] removeItemAtPath:imagePath error:nil];

UIImage *instagramImage = [UIImage imageNamed:@"imagename you want to share"];
[UIImagePNGRepresentation(instagramImage) writeToFile:imagePath atomically:YES];
NSLog(@"Image Size >>> %@", NSStringFromCGSize(instagramImage.size));

self.dic=[UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:imagePath]];
self.dic.delegate = self;
self.dic.UTI = @"com.instagram.exclusivegram";
[self.dic presentOpenInMenuFromRect: self.view.frame inView:self.view animated:YES ];

}

NOTA: una vez que redirige a la aplicación de Instagram, no puede volver a su aplicación. tienes que abrir tu aplicación de nuevo

Puede hacerlo sin usar UIDocumentInteractionController e ir directamente a Instagram con estos 3 métodos:

Funciona igual que todas las demás aplicaciones famosas. El código está escrito en Objective c, por lo que puede traducirlo a rápido si lo desea. Lo que debe hacer es guardar su imagen en el dispositivo y usar un URLScheme

agregue esto dentro de su archivo .m

#import <Photos/Photos.h>

Primero debe guardar su UIImage en el dispositivo con este método:

-(void)savePostsPhotoBeforeSharing
{
    UIImageWriteToSavedPhotosAlbum([UIImage imageNamed:@"image_file_name.jpg"], self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);
}

Este método es la devolución de llamada para guardar la imagen en su dispositivo:

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo: (void *) contextInfo;
{
    [self sharePostOnInstagram];

}

Una vez que la imagen se guarda en el dispositivo, debe consultar la imagen que acaba de guardar y obtenerla como PHAsset

-(void)sharePostOnInstagram
{
    PHFetchOptions *fetchOptions = [PHFetchOptions new];
    fetchOptions.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"creationDate" ascending:NO],];
    __block PHAsset *assetToShare;
    PHFetchResult *result = [PHAsset fetchAssetsWithMediaType:PHAssetMediaTypeImage options:fetchOptions];
    [result enumerateObjectsUsingBlock:^(PHAsset *asset, NSUInteger idx, BOOL *stop) {
        assetToShare = asset;


    }];


    if([assetToShare isKindOfClass:[PHAsset class]])
    {
        NSString *localIdentifier = assetToShare.localIdentifier;
        NSString *urlString = [NSString stringWithFormat:@"instagram://library?LocalIdentifier=%@",localIdentifier];
        NSURL *instagramURL = [NSURL URLWithString:urlString];
        if ([[UIApplication sharedApplication] canOpenURL: instagramURL])
        {
            [[UIApplication sharedApplication] openURL: instagramURL];
        } else
        {
            // can not share with whats app
            NSLog(@"No instagram installed");
        }

    }
}

Y no olvide poner esto en su info.plist debajo LSApplicationQueriesSchemes

<string>instagram</string>

- (void) shareImageWithInstagram
{
    NSURL *instagramURL = [NSURL URLWithString:@"instagram://"];
    if ([[UIApplication sharedApplication] canOpenURL:instagramURL])
    {
        UICachedFileMgr* mgr = _gCachedManger;
        UIImage* photoImage = [mgr imageWithUrl:_imageView.image];
        NSData* imageData = UIImagePNGRepresentation(photoImage);
        NSString* captionString = [NSString  stringWithFormat:@"ANY_TAG",];
        NSString* imagePath = [UIUtils documentDirectoryWithSubpath:@"image.igo"];
        [imageData writeToFile:imagePath atomically:NO];
        NSURL* fileURL = [NSURL fileURLWithPath:[NSString stringWithFormat:@"file://%@",imagePath]];

        self.docFile = [[self setupControllerWithURL:fileURL usingDelegate:self]retain];
        self.docFile.annotation = [NSDictionary dictionaryWithObject: captionString
                                                     forKey:@"InstagramCaption"];
        self.docFile.UTI = @"com.instagram.photo";

        // OPEN THE HOOK
        [self.docFile presentOpenInMenuFromRect:self.view.frame inView:self.view animated:YES];
    }
    else
    {
        [UIUtils messageAlert:@"Instagram not installed in this device!\nTo share image please install instagram." title:nil delegate:nil];
    }
}

Probé esto en mi aplicación y definitivamente funcionará

En cuanto a mí, la mejor y más fácil forma descrita aquí Compartir foto en Instagram desde mi aplicación iOS

Debe guardar la imagen en el dispositivo usando el formato .igo, luego use "UIDocumentInteractionController" para enviar la aplicación de ruta local de Instagram. No olvide configurar "UIDocumentInteractionControllerDelegate"

Mi consejo es agregar algo como:

NSURL *instagramURL = [NSURL URLWithString:@"instagram://app"];
if ([[UIApplication sharedApplication] canOpenURL:instagramURL]) 
{
 <your code>
}

NSURL *instagramURL = [NSURL URLWithString:@"instagram://app"];

if ([[UIApplication sharedApplication] canOpenURL:instagramURL])
{

    NSString  *jpgPath = [NSHomeDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"Documents/Insta_Images/%@",@"shareImage.png"]];


    NSURL *igImageHookFile = [[NSURL alloc] initWithString:[[NSString alloc] initWithFormat:@"file://%@", jpgPath]];


    docController.UTI = @"com.instagram.photo";

    docController = [self setupControllerWithURL:igImageHookFile usingDelegate:self];

    docController =[UIDocumentInteractionController interactionControllerWithURL:igImageHookFile];

    docController.delegate=self;

    [docController presentOpenInMenuFromRect:CGRectMake(0 ,0 , 612, 612) inView:self.view animated:YES];

Me di cuenta de que si pones URLapuntar a la imagen en activityItemslugar de UIImage, el Copy to Instagramelemento de actividad aparece en sí mismo y no tienes que hacer nada más. Tenga en cuenta que los Stringobjetos en el interior activityItemsse descartarán y no hay forma de rellenar previamente los subtítulos en Instagram. Si aún desea insinuar al usuario que publique un título en particular, deberá crear una actividad personalizada en la que copie ese texto en el portapapeles y le informe al usuario, como en esta esencia .

    @import Photos;

    -(void)shareOnInstagram:(UIImage*)imageInstagram {

        [self authorizePHAssest:imageInstagram];
    }

    -(void)authorizePHAssest:(UIImage *)aImage{

        PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];

        if (status == PHAuthorizationStatusAuthorized) {
            // Access has been granted.
            [self savePostsPhotoBeforeSharing:aImage];
        }

        else if (status == PHAuthorizationStatusDenied) {
            // Access has been denied.
        }

        else if (status == PHAuthorizationStatusNotDetermined) {

            // Access has not been determined.
            [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {

                if (status == PHAuthorizationStatusAuthorized) {
                    // Access has been granted.
                    [self savePostsPhotoBeforeSharing:aImage];
                }
            }];
        }

        else if (status == PHAuthorizationStatusRestricted) {
            // Restricted access - normally won't happen.
        }
    }
    -(void)saveImageInDeviceBeforeSharing:(UIImage *)aImage
    {
        UIImageWriteToSavedPhotosAlbum(aImage, self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);
    }

    - (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo: (void *) contextInfo;
    {
        if (error == nil){
            [self sharePostOnInstagram];
        }
    }

    -(void)shareImageOnInstagram
    {
        PHFetchOptions *fetchOptions = [PHFetchOptions new];
        fetchOptions.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"creationDate" ascending:false]];
        PHFetchResult *result = [PHAsset fetchAssetsWithMediaType:PHAssetMediaTypeImage options:fetchOptions];

        __block PHAsset *assetToShare = [result firstObject];

        if([assetToShare isKindOfClass:[PHAsset class]])
        {
            NSString *localIdentifier = assetToShare.localIdentifier;
            NSString *urlString = [NSString stringWithFormat:@"instagram://library?LocalIdentifier=%@",localIdentifier];
            NSURL *instagramURL = [NSURL URLWithString:urlString];
            if ([[UIApplication sharedApplication] canOpenURL: instagramURL])
            {
                [[UIApplication sharedApplication] openURL:instagramURL options:@{} completionHandler:nil];
            } else
            {
                NSLog(@"No instagram installed");
            }
        }
    }

NOTA: - IMP TODO: - Agregue la siguiente clave en Info.plist

<key>LSApplicationQueriesSchemes</key>
<array>
<string>instagram</string>
</array>

Usé este código:

    NSString* filePathStr = [[NSBundle mainBundle] pathForResource:@"UMS_social_demo" ofType:@"png"];
NSURL* fileUrl = [NSURL fileURLWithPath:filePathStr];

NSString  *jpgPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/test.igo"];
[[NSData dataWithContentsOfURL:fileUrl] writeToFile:jpgPath atomically:YES];

NSURL* documentURL = [NSURL URLWithString:[NSString stringWithFormat:@"file://%@", jpgPath]];

UIDocumentInteractionController *interactionController = [UIDocumentInteractionController interactionControllerWithURL: documentURL];
self.interactionController = interactionController;
interactionController.delegate = self;
interactionController.UTI = @"com.instagram.photo";
CGRect rect = CGRectMake(0 ,0 , 0, 0);
[interactionController presentOpenInMenuFromRect:rect inView:self.view animated:YES];

-(void)shareOnInstagram {

    CGRect rect = CGRectMake(self.view.frame.size.width*0.375 ,self.view.frame.size.height/2 , 0, 0);



    NSString * saveImagePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/ShareInstragramImage.igo"];

    [UIImagePNGRepresentation(_image) writeToFile:saveImagePath atomically:YES];

    NSURL *igImageHookFile = [[NSURL alloc] initWithString:[[NSString alloc] initWithFormat:@"file://%@", saveImagePath]];

    self.documentController=[UIDocumentInteractionController interactionControllerWithURL:igImageHookFile];

    self.documentController.UTI = @"com.instagram.exclusivegram";
    self.documentController = [self setupControllerWithURL:igImageHookFile usingDelegate:self];

    [self.documentController presentOpenInMenuFromRect: rect    inView: self.view animated: YES ];

}

-(UIDocumentInteractionController *) setupControllerWithURL: (NSURL*) fileURL usingDelegate: (id <UIDocumentInteractionControllerDelegate>) interactionDelegate {

    UIDocumentInteractionController *interactionController = [UIDocumentInteractionController interactionControllerWithURL: fileURL];
    interactionController.delegate = interactionDelegate;
    return interactionController;
}

 NSURL *myURL = [NSURL URLWithString:sampleImageURL];
                    NSData * imageData = [[NSData alloc] initWithContentsOfURL:myURL];
                    UIImage *imageToUse = [[UIImage alloc] initWithData:imageData];
                    NSString *documentDirectory=[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
                    NSString *saveImagePath=[documentDirectory stringByAppendingPathComponent:@"Image.ig"];
                    [imageData writeToFile:saveImagePath atomically:YES];
                    NSURL *imageURL=[NSURL fileURLWithPath:saveImagePath];
                    self.documentController = [UIDocumentInteractionController interactionControllerWithURL:imageURL];
                    self.documentController.delegate = self;
                    self.documentController.annotation = [NSDictionary dictionaryWithObjectsAndKeys:[NSString stringWithFormat:@""], @"", nil];
                    self.documentController.UTI = @"com.instagram.exclusivegram";
                    [self.documentController presentOpenInMenuFromRect:CGRectMake(1, 1, 1, 1) inView:self.view animated:YES];