iOS Question Deadly combination with LSSupportsOpeningDocumentsInPlace...

[OlavRossland]

Thank's to @Erel (in this post), I can now open all txt-files with combination of UIFileSharingEnabled and CFBundleDocumentTypes.

    #PlistExtra: <key>UIFileSharingEnabled</key><true/>
    #PlistExtra: <key>CFBundleDocumentTypes</key>
    #PlistExtra: <array>
    #PlistExtra:    <dict>
    #PlistExtra:        <key>CFBundleTypeName</key>
    #PlistExtra:            <string>Text File</string>
    #PlistExtra:        <key>LSHandlerRank</key>
    #PlistExtra:            <string>Alternate</string>
    #PlistExtra:        <key>LSItemContentTypes</key>
    #PlistExtra:            <array>
    #PlistExtra:                <string>public.text</string>
    #PlistExtra:            </array>
    #PlistExtra:    </dict>
    #PlistExtra: </array>

But...
in the next step, I can't combine LSSupportsOpeningDocumentsInPlace with UIFileSharingEnabled and CFBundleDocumentTypes.

    #PlistExtra: <key>LSSupportsOpeningDocumentsInPlace</key><true/>
    #PlistExtra: <key>UIFileSharingEnabled</key><true/>    
    #PlistExtra: <key>CFBundleDocumentTypes</key>
    #PlistExtra: <array>
    #PlistExtra:    <dict>
    #PlistExtra:        <key>CFBundleTypeName</key>
    #PlistExtra:            <string>Text File</string>
    #PlistExtra:        <key>LSHandlerRank</key>
    #PlistExtra:            <string>Alternate</string>
    #PlistExtra:        <key>LSItemContentTypes</key>
    #PlistExtra:            <array>
    #PlistExtra:                <string>public.text</string>
    #PlistExtra:            </array>
    #PlistExtra:    </dict>
    #PlistExtra: </array>

The error comes when I try to open a text-file from the iOS Files-app on my iPhone.
My app then crash, and I get this error:

*** Assertion failure in -[UIApplication _applicationOpenURLAction:payload:origin:], UIApplication.m:7956
Error occurred on line: 241 (Main)
Application has LSSupportsOpeningDocumentsInPlace key, but doesn't implement application:openURL:options: on delegate <B4IAppDelegate: 0x28377ce60>
Stack Trace: (
  CoreFoundation       18E3CD08-C5BD-329B-AADA-4684E60F8805 + 39488
  libobjc.A.dylib      objc_exception_throw + 56
  Foundation           50C2EC83-ADF0-3911-A0E0-FC6E4E0C0E60 + 4976464
  UIKitCore            55D36A14-98DE-3A42-810E-220DE725A53B + 4597276
  UIKitCore            55D36A14-98DE-3A42-810E-220DE725A53B + 13048848
  libdispatch.dylib    694EC4A0-7CF4-3E50-947D-79A142B4D0DD + 407632
  libdispatch.dylib    694EC4A0-7CF4-3E50-947D-79A142B4D0DD + 411592
  libdispatch.dylib    694EC4A0-7CF4-3E50-947D-79A142B4D0DD + 286488
  libdispatch.dylib    694EC4A0-7CF4-3E50-947D-79A142B4D0DD + 285584
  CoreFoundation       18E3CD08-C5BD-329B-AADA-4684E60F8805 + 604200
 CoreFoundation       18E3CD08-C5BD-329B-AADA-4684E60F8805 + 488616
 CoreFoundation       CFRunLoopRunSpecific + 584
 GraphicsServices     GSEventRunModal + 160
 UIKitCore            55D36A14-98DE-3A42-810E-220DE725A53B + 3626536
 UIKitCore            UIApplicationMain + 312
 SplitNote            main + 104
 dyld                 F328B8FD-5C49-3ECE-9A63-A51B44ACDE0C + 81392
)
SignalHandler 6

I have now read the "entire" internet..., but I'm not able to solve this problem.
Any idea?

 

[Erel]

Add this to the main module:

#if OBJC
@end
@interface B4IAppDelegate (openurl)
@end
@implementation B4IAppDelegate (openurl)
- (BOOL)application:(UIApplication *)app 
            openURL:(NSURL *)url 
            options:(NSDictionary<UIApplicationOpenURLOptionsKey, id> *)options {
        
        return [self application:app openURL:url sourceApplication:nil annotation:options];
}
#End If

 

[OlavRossland]

Thank You @Erel !
I tested the code in post #2 - So far, so good. I can now use this without the app is crash - at least:
#PlistExtra: <key>LSSupportsOpeningDocumentsInPlace</key><true/><key>UIFileSharingEnabled</key><true/>

If I'm loading (Application_OpenUrl...) a file from the app File.DirDocuments-area, my app open and read the txt-file without any error.

But:...
If I'm trying to open a file outside of the app-area, for example on iCloud, i still get error.

...The Catch still give me error.
By placing the TextView1.Text=File.ReadString("",f) (just to se what's wrong...) I read this error from the Logs:

Private Sub Application_OpenUrl (Url As String, Data As Object) As Boolean
    If Url.StartsWith("file://") Then
        Dim su As StringUtils
        Dim f As String = su.DecodeUrl(Url.SubString(7),"utf8") 'remove the file:// scheme.
        TextView1.Text=File.ReadString("",f) 'Just for testing - se some error...
        Try
            TextView1.Text=File.ReadString("",f)
        Catch
            Msgbox("Error loading file", "")
        End Try
    End If
    Return True
End Sub

The Error:...
Error reading file: Error Domain=NSCocoaErrorDomain Code=257 "Filen «# TIPS.txt» kunne ikke åpnes fordi du ikke har tillatelse til å vise den." UserInfo={NSFilePath=/private/var/mobile/Library/Mobile Documents/com~apple~CloudDocs/# pro-Note/# TIPS.txt, NSUnderlyingError=0x28091bc60 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}}

But if I open the same file (outside of the app-area), from the app itself with this code:

        DocumentPicker.InitializeImport("picker", Array("public.text"))
        DocumentPicker.Show(Page1,Page1.TopRightButtons)
        Wait For Picker_Complete (Success As Boolean, URLs As List)
        If Success Then
            TextView1.Text=(File.ReadString(URLs.Get(0), ""))
        End If

There is no "Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted""

I'm still reading tips'n trick's, but I think I need some help to solve this - please anyone...

 

[Erel]

Tricky case.

Updated code which seems to work:

#if OBJC
@end
@interface B4IAppDelegate (openurl)
@end
@implementation B4IAppDelegate (openurl)
- (BOOL)application:(UIApplication *)app 
            openURL:(NSURL *)url 
            options:(NSDictionary<UIApplicationOpenURLOptionsKey, id> *)options {
        [url startAccessingSecurityScopedResource];
        [self application:app openURL:url sourceApplication:nil annotation:options];
        [url stopAccessingSecurityScopedResource];
        return true;
}
#End If

based on: https://stackoverflow.com/questions/57596871/no-permission-to-read-icloud-drive-file

 

[OlavRossland]

Tricky case.

Updated code which seems to work:

#if OBJC
@end
@interface B4IAppDelegate (openurl)
@end
@implementation B4IAppDelegate (openurl)
- (BOOL)application:(UIApplication *)app
            openURL:(NSURL *)url
            options:(NSDictionary<UIApplicationOpenURLOptionsKey, id> *)options {
        [url startAccessingSecurityScopedResource];
        [self application:app openURL:url sourceApplication:nil annotation:options];
        [url stopAccessingSecurityScopedResource];
        return true;
}
#End If

based on: https://stackoverflow.com/questions/57596871/no-permission-to-read-icloud-drive-file

Thank You @Erel for taking Your time to this.
Everything was OK now when testing with iCloud, but I still have error when opening txt-files from OneDrive.
I made a complete new app for this testing (se attached file).

I think I have to make some more tests - I'll be back...