如何禁用“保存到文件"在iOS 11中?

问题描述

我有一个iOS应用程序，该应用程序创建PDF，并使用UIActivityViewController使用默认共享功能进行共享.我不得不阻止一些共享功能，例如Vimeo，Facebook，Twillio等，而且文件也不应存储在设备上.

I have an iOS app which creates a PDF and is shared using the UIActivityViewController using the default share functionality. I had to block a few sharing facilities like Vimeo, Facebook, Twillio, etc. and also the file should not be stored on the device.

在新的iOS 11版本中，Apple提供了具有默认共享功能的SaveToFiles选项.我尝试使用excludeActivityTypes并阻止了"com.apple.CloudDocsUI.AddToiCloudDrive"选项，但没有成功.

With the new iOS 11 version, Apple has provided SaveToFiles option with the default share functionality. I tried using excludedActivityTypes, and with blocking the "com.apple.CloudDocsUI.AddToiCloudDrive" option, but no success.

有人可以帮助我通过Swift禁用SaveToFile选项吗?我正在使用Xcode 9.3和Swift4.

Can anyone help me to disable the SaveToFile option though Swift? I am using Xcode 9.3 and Swift 4.

推荐答案

当前，我们可能无法通过添加来禁用保存到文件或添加到共享相册 activityViewController 中的excludeActivityTypes .但是我们可以防止当用户确实按下两个活动类型时不执行操作，而是显示警报.

Currently, we probably cannot disable Save to Files or Add to Shared Album by add excludedActivityTypes in activityViewController. But we can prevent when user did press two activity types will do not perform action instead we'll showing alert.

首先，我们创建自定义 UIActivityItemProvider

First we create custom UIActivityItemProvider

class ActivityItemProvider: UIActivityItemProvider {
  override func activityViewController(_ activityViewController: UIActivityViewController, itemForActivityType activityType: UIActivityType) -> Any? {
    // in here we'll check activityType = "com.apple.CloudDocsUI.AddToiCloudDrive" (Save to Files),
    // activityType = "com.apple.mobileslideshow.StreamShareService" (Shared Album)
    if(activityType.rawValue.contains("com.apple.CloudDocsUI.AddToiCloudDrive") || (activityType.rawValue.contains("com.apple.mobileslideshow.StreamShareService") {
      // dismiss activityViewController first
      activityViewController.dismiss(animated: true, completion: nil)
      // show alert controller, we can using UIApplication.shared.keyWindow?.rootViewController to present alert
      return nil
    }
    return self.placeholderItem
}

在我们称为 UIActivityController 的地方，让我们使用

In where we call UIActivityController, let's using

let item = ActivityItemProvider.init(placeholderItem: {your item})
let activityViewController = UIActivityViewController.init(activityItems: item, applicationActivities: nil)

ObjectiveC版本

ObjectiveC version

#import "BRActivityItemProvider.h"
#import "UIViewController+Additions.h"
@implementation BRActivityItemProvider

- (id)activityViewController:(UIActivityViewController *)activityViewController itemForActivityType:(UIActivityType)activityType {
  [super activityViewController:activityViewController itemForActivityType:activityType];
  NSLog(@"itemForActivityType %@", activityType);
  if([activityType containsString:@"com.apple.CloudDocsUI.AddToiCloudDrive"] || [activityType containsString:@"com.apple.mobileslideshow.StreamShareService"]) {
    [activityViewController dismissViewControllerAnimated:true completion:^{
      UIViewController *rootController = [UIApplication sharedApplication].keyWindow.rootViewController;
      if(rootController != nil) {
        NSString *str = [activityType containsString:@"com.apple.CloudDocsUI.AddToiCloudDrive"]
        ? @"Cannot save file to iCloud Driver"
        : @"Cannot save file to Shared Album";
        dispatch_async(dispatch_get_main_queue(), ^{
// this's my custom show alert controller, you can change your own
          [rootController showAlertController:str action:^(UIAlertAction * _Nonnull action) {
          }];
        });
      }
    }];
    return nil;
  }
  return self.placeholderItem;
}

在其中调用 UIActivityViewController

BRActivityItemProvider *itemProvider = [[BRActivityItemProvider alloc]initWithPlaceholderItem:item];
    UIActivityViewController *activityController = [[UIActivityViewController alloc]initWithActivityItems:itemProvider applicationActivities:nil];
    activityController.popoverPresentationController.sourceView = controller.view;
// your logic code
// ....

这篇关于如何禁用“保存到文件"在iOS 11中?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！