UIDocumentPickerViewController - 所有文件都显示为灰色 [英] UIDocumentPickerViewController - All files grayed out

问题描述

我正在iOS 8中测试新的 UIDocumentPickerViewController API。我想在iCloud中打开一个文件，看看交互是如何工作的。

这是我从 UIViewController 运行的代码：

   - （IBAction）openDocument：（id）sender {
 [self showDocumentPickerInMode：UIDocumentPickerModeOpen]; 
} 
 
  - （void）showDocumentPickerInMode：（UIDocumentPickerMode）模式{
 UIDocumentPickerViewController * picker = [[UIDocumentPickerViewController alloc] initWithDocumentTypes：@ [（NSString *）kUTTypeData] inMode：mode ]。 
 
 picker.delegate = self; 
 
 [self presentViewController：picker animated：YES completion：nil]; 
} 
  

openDocument 并列到IB的按钮。当我点击它时，它会打开iCloud浏览器，但其中的每个文件夹都显示为灰色（我创建了一些测试Keynote，Numbers和Pages文件），所以我无法访问这些文件：

。

<我检查了一些文档并做了以下事情（没有运气）：

• 在我的应用程序中启用了iCloud（在功能部分，密钥值存储和iCloud文档）。



• 在我的Info.plist中添加了 public.data 的UTI作为如下：

   < key> CFBundleDocumentTypes< / key> 
    

  
  
  CFBundleTypeIconFile
  icon.png
  CFBundleTypeName
  MyData
  CFBundleTypeRole
  查看器
  LSItemContentTypes
  
  public.data
  
  LSTypeIsPackage
  
  NSDocumentClass
  凭证
  NSPersistentStoreTypeKey
  二进制
  
  




• 添加 NSUbiquitousContainerIsDocumentScopePublic 键值 YES 到我的Info.plist。

知道可能出错或丢失的内容吗？

解决方案

iWork文档不符合 kUTTypeData ，它们符合 kUTTypePackage 。

然而，在iOS中8 beta 3，我必须使用确切的UTI：

  UIDocumentPickerViewController * picker = [[UIDocumentPickerViewContr oller alloc] initWithDocumentTypes：@ [@com.apple.iwork.pages.pages，@com.apple.iwork.numbers.numbers，@com.apple.iwork.keynote.key] inMode：mode] ; 
  

I'm testing the new UIDocumentPickerViewController API in iOS 8. I want to just open a file in iCloud, to see how the interaction works.

This is the code I'm running from my UIViewController:

- (IBAction)openDocument:(id)sender {
    [self showDocumentPickerInMode:UIDocumentPickerModeOpen];
}

- (void)showDocumentPickerInMode:(UIDocumentPickerMode)mode {
    UIDocumentPickerViewController *picker = [[UIDocumentPickerViewController alloc] initWithDocumentTypes:@[(NSString *)kUTTypeData] inMode:mode];

    picker.delegate = self;

    [self presentViewController:picker animated:YES completion:nil];
}

openDocument is tied to a button in IB. When I tap it, it opens the iCloud browser, but every folder in it is grayed out (I created some test Keynote, Numbers and Pages files) so I cannot get to the files:

.

I checked some documentation and did the following (with no luck):

• Enabled iCloud in my app (in the Capabilities section, for both Key-value storage and iCloud Documents).

• Added the UTI for public.data in my Info.plist as follows:

  <key>CFBundleDocumentTypes</key>
  

  CFBundleTypeIconFile icon.png CFBundleTypeName MyData CFBundleTypeRole Viewer LSItemContentTypes public.data LSTypeIsPackage NSDocumentClass Document NSPersistentStoreTypeKey Binary

• Added the NSUbiquitousContainerIsDocumentScopePublic key with a value of YES to my Info.plist.

Any idea what could be wrong or missing?

解决方案

iWork documents do not conform to kUTTypeData, they conform to kUTTypePackage.

However, in iOS 8 beta 3, I had to use the exact UTIs:

UIDocumentPickerViewController *picker = [[UIDocumentPickerViewController alloc] initWithDocumentTypes:@[@"com.apple.iwork.pages.pages", @"com.apple.iwork.numbers.numbers", @"com.apple.iwork.keynote.key"] inMode:mode];

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