instagram - 无法将 Instagram 集成到 iOS 应用程序中

Question

我无法使用 iOS 应用程序在 Instagram 上发布我的照片。我从 stackoverflow 上的一篇文章中获得了以下代码，但它不起作用。 Instagram 启动时，显示错误无法打开文件。请帮助我。

NSURL *instagramURL = [NSURL URLWithString:@"instagram://location?id=1"];
    if ([[UIApplication sharedApplication] canOpenURL:instagramURL]) {

        NSString *documentsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
        NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:@"Image.ig"];
        NSData *imageData = UIImagePNGRepresentation([UIImage imageNamed:@"Icon.png"]);
        [imageData writeToFile:savedImagePath atomically:YES];
        NSURL *imageUrl = [NSURL fileURLWithPath:savedImagePath];
        docController = [[UIDocumentInteractionController alloc] init];
        docController.delegate = self;
        [docController retain];
        docController.UTI = @"com.instagram.photo";
        [docController setURL:imageUrl];
        [docController presentOpenInMenuFromRect:CGRectZero inView:self.view animated:YES];
    }else{

        UIAlertView *errorToShare = [[UIAlertView alloc] initWithTitle:@"Instagram unavailable " message:@"You need to install Instagram in your device in order to share this image" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [errorToShare show];
        [errorToShare release];
    }

Answer 1

Instagram 的最小分辨率为 612x612。始终为 JPG。