ios – 如何使用所有类型的UTI初始化UIDocumentPickerViewController

我想打开UIDocumentPickerViewController,它应该允许用户选择所有类型的文件.我试图提到UIDocumentPickerViewController中的所有UTI初始化方法仍无法找到某些文件的有效UTI,如rar,Visio文件,mpp,mpt

UIDocumentPickerViewController *documentPicker = [[UIDocumentPickerViewController alloc] initWithDocumentTypes:[MingleUtils allowedUTIs] inMode:UIDocumentPickerModeImport];

和

+(NSArray*)allowedUTIs{
    return @[@"public.data",@"public.content",@"public.audiovisual-content",@"public.movie",@"public.video",@"public.audio",@"public.text",@"public.data",@"public.zip-archive",@"com.pkware.zip-archive",@"public.composite-content",@"public.text"];
}

UIDocumentPickerViewController* documentPicker = 
  [[UIDocumentPickerViewController alloc] initWithDocumentTypes:@[@"public.data"]
                                                         inMode:UIDocumentPickerModeImport];