WIP: New ICS import/export

[dschuermann]

This will be the new ICS import/export functionality. It uses ical4android developed by the Davx5 developers.

Hopefully I can retire https://github.com/SufficientlySecure/calendar-import-export afterwards.

• First ugly hack to import ICS file into calendar
• Import ICS file with multiple entries into an existing calendar
• Export full calendar as ICS file
• Use release tag of ical4android. Related MR on Gitlab
• Remove old com.android.calendar.icalendar package
• Use ical4android for single event export + share button
• Imort ICS files via intent filter

Out of scope:

• Automatic sync of ICS resources on the Internet. There is ICSx5 for that. (maybe mention it inside Etar?)

[jtrees]

Are you still working on this?

[ZarVladimirII]

How´s the status of implementation?

[dschuermann]

Currently not working on this due to time constraints.

[ioctl-user]

It's very useful feature for backup and restore without internet accounts. Could you fix and accept it?

[thiesw]

Maybe this is helpful for this feature:
I enhanced the CalenderImportExport with support for (locally) deleted events and event colors.
SufficientlySecure/calendar-import-export#91
Feel free to incorporate the relevant parts of it into this project.

[Erz3]

Please, would be nice I you could still working to implement export/import all events fron a local account.

This is a very important feature, specially to people that just work with local account, like me. Obviusly I don, use Etar to sync with Google, that would be stupid 😅.

[thiesw]

For anyone needing this functionality right now, the app CalenderImportExport exists, see also https://github.com/SufficientlySecure/calendar-import-export.
The last version has some errors, see pull request by me above.
I offer the compiled APK with these changes:
https://it-tw.de/android/CalendarImportExport-v27tw.apk
(I added no malicious code, but use on your own risk anyway; the APK is signed with a not listed signature at Google Play, so you'll get a warning; you will need to uninstall the previous "official" version first, because of a signature change).

[tokariu]

@thiesw I tried installing your compiled apk on android 10, but it says there was an error parsing the apk, I cannot install.

I'm currently stuck importing an offline calendar from an old phone to a new phone. there is no way to do that offline with files. the old offline import/export app is not working correctly, I have single events imported multiple times and errors like that.

please, anybody who can review and update this app and functionality, help!

[thiesw]

@tokariu I just tried "my" apk (on an android 8 device) and it works fine. It is an apk build by official Android Studio. But it is just signed by a self-created signature that is not registered at Google Play - maybe your device has some security settings prohibiting such installs? Look for yourself.
Another possibility if you already have an exported calendar: Install a Nextcloud instance (it's free and quite easy, maybe your DSL provider even offers PHP hosting, that would be enough) and import the calendar there and sync it with your device.

[ZarVladimirII]

@tokariu if you don´t mind to connect to a PC you can use backup software.
MyPhoneExplorer was fine to import me *.ics files, because Etar and simplemobiletools couldn´t.

[rekweststory]

This change is referenced in many other reports, but it seems that the merging is blocked. What needs to happen for this to go live?

[Gitsaibot]

This change is referenced in many other reports, but it seems that the merging is blocked. What needs to happen for this to go live?

We must hope that dschuermann has some time to finish programming the new import/export. Then nothing more stands in the way of merging. By the way...WIP= Work in Progress. In this case it's a long way ;)

[sergih123]

Are there any updates regarding this?
Also, just out of curiosity, what are the main problems with implementing it?