使用文档交互控制器直接发布到 Instagram

Question

在我的应用程序中，我设法通过文档交互控制器将图像发布到 Instagram。这一个还显示了在 Dropbox、whatsapp 等上共享的选项。我不想要这些功能，我只想要 Instagram。有没有办法以编程方式单击 Instagram 按钮，或删除其他不需要的应用程序的按钮？ 提前感谢您的回答。

编辑：这是代码，其中包含“com.instagram.exclusivegram”的行我设法只显示了 Instagram、Bump 和 Dropbox。我怎样才能让最后两个消失？

-(void)ShareInstagram
{

    [self storeimage];
    NSURL *instagramURL = [NSURL URLWithString:@"instagram://app"];
    if ([[UIApplication sharedApplication] canOpenURL:instagramURL])
    {

        CGRect rect = CGRectMake(0 ,0 , 612, 612);
        NSString  *jpgPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/15717.igo"];

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

        //  [[UIApplication sharedApplication] openURL:instagramURL];
    }
    else
    {
        //   NSLog(@"instagramImageShare");
        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.tag=3010;
        [errorToShare show];
    }
}


- (void) storeimage
{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,     NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:@"15717.igo"];
    UIImage *NewImg=[self resizedImage:_imageToTweet inImage:CGRectMake(0, 0, 612, 612) ];
    NSData *imageData = UIImagePNGRepresentation(NewImg);
    [imageData writeToFile:savedImagePath atomically:NO];
}


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

    return interactionController;
}

Answer 1

setupControllerWithURL:usingDelegate 方法会覆盖上面设置的_dic 实例变量的属性。

这些行无效：

_dic.UTI = @"com.instagram.exclusivegram";
_dic.delegate=self;

先实例化UIDocumentInteractionController，然后设置其属性：

NSURL *igImageHookFile = [NSURL URLWithString:[NSString stringWithFormat:@"file://%@", jpgPath]];
_dic = [UIDocumentInteractionController interactionControllerWithURL:igImageHookFile];
_dic.UTI = @"com.instagram.exclusivegram";
_dic.delegate = self;

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