crash while rotating screen

This issue respects the following points:

• I have read the FAQ
• I have searched for existing issues
• The issue affects the Notes Android app, neither the Notes server app nor the Nextcloud Android app.

Describe the bug

1. open notes app
2. open a note
3. rotate phone/tab from portrait to landscape and backwards
4. see crash report

Expected behavior

no crash should happen

Notes Android version

4.3.1

Notes server version

current

Nextcloud Android version

current

Nextcloud version

current

Device

huawei tab & xiaomi phone

Android Version

9 & 12

App Store

• Google Play Store
• F-Droid
• Huawei App Gallery

Stacktrace

App Version: 4.3.1
App Version Code: 40030190
App Flavor: fdroid

Files App Version Code: 30310190 (PROD)

---

OS Version: 4.9.148(9.1.0.335C432)
OS API Level: 28
Device: HWSHT
Manufacturer: HUAWEI
Model (and Product): SHT-W09 (SHT-W09)

---

java.lang.IllegalStateException: Fragment NotePreviewFragment{930fed0} (a5a3874e-cade-408c-bab5-71f23dba5ce9) not attached to a context.
	at androidx.fragment.app.Fragment.requireContext(Fragment.java:973)
	at it.niedermann.owncloud.notes.edit.SearchableBaseNoteFragment.isDirectEditEnabled(SearchableBaseNoteFragment.java:127)
	at it.niedermann.owncloud.notes.edit.SearchableBaseNoteFragment.onScroll(SearchableBaseNoteFragment.java:76)
	at it.niedermann.owncloud.notes.edit.BaseNoteFragment.lambda$onNoteLoaded$7(BaseNoteFragment.java:288)
	at it.niedermann.owncloud.notes.edit.BaseNoteFragment.$r8$lambda$EJlcUQvLIqXm-xkAsDraxLkeSGY(Unknown Source:0)
	at it.niedermann.owncloud.notes.edit.BaseNoteFragment$$ExternalSyntheticLambda4.onScrollChange(D8$$SyntheticClass:0)
	at android.view.View.onScrollChanged(View.java:14448)
	at android.view.View.scrollTo(View.java:16283)
	at android.widget.ScrollView.scrollTo(ScrollView.java:1727)
	at android.view.View.setScrollY(View.java:14549)
	at it.niedermann.owncloud.notes.edit.NotePreviewFragment.lambda$scrollToY$0(NotePreviewFragment.java:78)
	at it.niedermann.owncloud.notes.edit.NotePreviewFragment.$r8$lambda$LkKyPR_ZO0gVumuqQmYwvMRphNg(Unknown Source:0)
	at it.niedermann.owncloud.notes.edit.NotePreviewFragment$$ExternalSyntheticLambda4.run(D8$$SyntheticClass:0)
	at android.os.Handler.handleCallback(Handler.java:907)
	at android.os.Handler.dispatchMessage(Handler.java:105)
	at android.os.Looper.loop(Looper.java:216)
	at android.app.ActivityThread.main(ActivityThread.java:7625)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:524)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:987)

Start with SearchableBaseNoteFragment.java at isDirectEditEnabled and onScroll, then trace the callback from BaseNoteFragment.java:288 and NotePreviewFragment.java:78. Reproduce the portrait-to-landscape rotation while a note is open and check the detached-fragment stack trace. Done means rotating between orientations no longer crashes.