[FEATURE] one handed mode support

[ohshazbot]

Describe the feature

Android has support for a one handed mode. I decided to try it out but was met with this error:

Lawnchair bug report Jan 16, 2025 10:53:41
version: 14.Beta 3 (14000203)
commit: 6f4a812
build.brand: google
build.device: caiman
build.display: AP4A.241205.013.C1
build.fingerprint: google/caiman/caiman:15/AP4A.241205.013.C1/12657666:user/release-keys
build.hardware: caiman
build.id: AP4A.241205.013.C1
build.manufacturer: Google
build.model: Pixel 9 Pro
build.security.level: 2024-12-05
build.product: caiman
build.type: user
version.codename: REL
version.incremental: 12657666
version.release: 15
version.sdk_int: 35
display.density_dpi: 360
isRecentsEnabled: false

error: Uncaught exception

java.lang.SecurityException: Settings key: <one_handed_mode_enabled> is not readable. From S+, settings keys annotated with @hide are restricted to system_server and system apps only, unless they are annotated with @Readable.
	at android.provider.Settings$NameValueCache.getStringForUser(Settings.java:3553)
	at android.provider.Settings$Secure.getStringForUser(Settings.java:7012)
	at android.provider.Settings$Secure.getIntForUser(Settings.java:7212)
	at android.provider.Settings$Secure.getInt(Settings.java:7206)
	at com.android.launcher3.util.SettingsCache.updateValue(Unknown Source:30)
	at com.android.launcher3.util.SettingsCache.onChange(Unknown Source:1)
	at android.database.ContentObserver.onChange(ContentObserver.java:184)
	at android.database.ContentObserver.onChange(ContentObserver.java:202)
	at android.database.ContentObserver.onChange(ContentObserver.java:238)
	at android.database.ContentObserver.lambda$dispatchChange$1(ContentObserver.java:332)
	at android.database.ContentObserver.$r8$lambda$_30FqRqKC3pUku8T3BsVPQAFotM(Unknown Source:0)
	at android.database.ContentObserver$$ExternalSyntheticLambda1.run(D8$$SyntheticClass:0)
	at android.os.Handler.handleCallback(Handler.java:991)
	at android.os.Handler.dispatchMessage(Handler.java:102)
	at android.os.Looper.loopOnce(Looper.java:232)
	at android.os.Looper.loop(Looper.java:317)
	at android.app.ActivityThread.main(ActivityThread.java:8787)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:591)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:871)

Why would it be useful to add?

It's part of general Android (I think? Maybe pixel specific) and should probably be supported

Did the feature exist in Lawnchair v2? (Play Store version)

No

Example(s)

Accessible via settings->system->gestures->one-handed mode

Additional context

No response

[TheRedCyclops]

It seems to be working for me running on LineageOS 22.1, so it seems to be device or setup specific

[An-Eagle]

I get this issue running android 15 QPR beta 2 on pixel 6

[ohshazbot]

This is on the vanilla OS, Android 15 on a Pixel 9 pro, with both the December and January Android security update