iOS 将文件共享到任何可能的应用程序的本机方式

Question

我目前正在使用 objective-C 实现一个 iOS 应用程序，它具有用户可以与其他朋友或其他应用程序共享文件的功能（例如将文件上传到 Dropbox，Google 驱动器，将文件附加到邮件，将文件共享到 Facebook Messenger、Whatsapp，通过蓝牙等）。

有没有一种原生的方式来实现这个共享功能，可以检测所有允许共享文件的应用程序，而我不需要一个一个地做？

Answer 1

您想使用 UIActivityViewController。下面是来自 NSHipster, which is probably the most comprehensive article I've seen on the subject. And Apple has some good documentation here.

的示例

NSString *string = ...;
NSURL *URL = ...;

UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:@[string, URL]
                                applicationActivities:nil];
[navigationController presentViewController:activityViewController
                                  animated:YES
                                completion:^{
     // ...
}];

Answer 2

这为 iPhone 和 iPad 设备提供了完整的答案

ViewController *contentViewController = [[ViewController alloc] init];

// Present the view controller using the popover style.
contentViewController.modalPresentationStyle = UIModalPresentationPopover;
[self presentViewController:contentViewController 
                   animated:YES 
                 completion:nil];

// Get the popover presentation controller and configure it.
UIPopoverPresentationController *presentationController =[contentViewController popoverPresentationController];
presentationController.permittedArrowDirections = UIPopoverArrowDirectionUp;
presentationController.sourceView = self.view;
presentationController.sourceRect = self.view.frame;

UIPopoverPresentationController should have a non-nil sourceView or barButtonItem set before the presentation occurs on iOS 9

iOS 将文件共享到任何可能的应用程序的本机方式

iOS native way to share files to any possible apps

ios

objective-c

file-upload

native

file-sharing