Update: I was able to work around this by binding a prebuilt Palette object (whose various color property values are all contingent on colorScheme) to the ApplicationWindow's palette property. That shows that the base palette still works, but not why it's failing to follow colorScheme by default (as is the case for Qt Widgets apps on Android or Qt Quick apps on other platforms).

Here is the application output when tracing the screen twice with the pen: 10:01:25: Android target "org.qtproject.example.MobileTablet" terminated. I/le.MobileTablet: Late-enabling -Xcheck:jni I/le.MobileTablet: Using CollectorTypeCMC GC. D/nativeloader: Load libframework-connectivity-tiramisu-jni.so using APEX ns com_android_tethering for caller /apex/com.android.tethering/javalib/framework-connectivity-t.jar: ok D/CompatibilityChangeReporter: Compat change id reported: 171979766; UID 10306; state: ENABLED D/CompatibilityChangeReporter: Compat change id reported: 242716250; UID 10306; state: ENABLED D/nativeloader: Configuring clns-6 for other apk /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk. target_sdk_version=36, uses_libraries=, library_path=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/lib/arm64:/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a, permitted_path=/data:/mnt/expand:/data/user/0/org.qtproject.example.MobileTablet D/nativeloader: Load libframework-connectivity-jni.so using APEX ns com_android_tethering for caller /apex/com.android.tethering/javalib/framework-connectivity.jar: ok V/GraphicsEnvironment: Currently set values for: V/GraphicsEnvironment: angle_gl_driver_selection_pkgs=[] V/GraphicsEnvironment: angle_gl_driver_selection_values=[] V/GraphicsEnvironment: ANGLE GameManagerService for org.qtproject.example.MobileTablet: false V/GraphicsEnvironment: org.qtproject.example.MobileTablet is not listed in per-application setting V/GraphicsEnvironment: App is not on the allowlist for updatable production driver. D/CompatibilityChangeReporter: Compat change id reported: 183155436; UID 10306; state: ENABLED D/MbrainDebugManagerImpl: getService failed D/libMEOW : meow new tls: 0xb400006efb5ff0b0 D/libMEOW : meow reload base cfg path: na D/libMEOW : meow reload overlay cfg path: na W/QT : qt_process_init() called E/QT : [QT]file does not exist W/QT : Support!! D/libMEOW : applied 0 plugin for [org.qtproject.example.MobileTablet]. D/libMEOW : rebuild call chain: 0xb400006efb5cf080 D/libMEOW : meow delete tls: 0xb400006efb5ff0b0 D/CompatibilityChangeReporter: Compat change id reported: 247079863; UID 10306; state: ENABLED W/le.MobileTablet: ClassLoaderContext parent mismatch. (PCL[] | PCL[];PCL[/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk*3949881819]) D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libc++_shared.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6Core_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok I/QtCore : Start D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6Gui_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6Widgets_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6Svg_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6Network_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6OpenGL_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6Qml_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6QmlModels_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6QmlWorkerScript_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6QmlMeta_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6Quick_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libQt6VirtualKeyboard_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libplugins_platforms_qtforandroid_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok I/Qt : Qt platform plugin started D/nativeloader: Load /data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk!/lib/arm64-v8a/libMobileTablet_arm64-v8a.so using class loader ns clns-6 (caller=/data/app/~~GOZeW_WaqPAmQ16ve5Oomw==/org.qtproject.example.MobileTablet-YoP76MFWqX6LEnzPk2LCzQ==/base.apk): ok I/M-ProMotion: M-ProMotion is disabled D/CompatibilityChangeReporter: Compat change id reported: 210923482; UID 10306; state: ENABLED I/SurfaceFactory: [static] sSurfaceFactory = com.mediatek.view.impl.SurfaceFactoryImpl@f0a7a7c D/CompatibilityChangeReporter: Compat change id reported: 237531167; UID 10306; state: DISABLED W/OpenGLRenderer: Unknown dataspace 0 D/VRI[QtActivity]: hardware acceleration = true, forceHwAccelerated = false D/nativeloader: Load libpowerhalwrap_jni.so using system ns (caller=/system_ext/framework/mediatek-framework.jar): ok I/PowerHalWrapper: PowerHalWrapper.getInstance D/libMEOW : meow new tls: 0xb400006efb5cf080 D/libMEOW : applied 0 plugin for [org.qtproject.example.MobileTablet]. D/libMEOW : rebuild call chain: 0xb400006efb5df090 D/InputTransport: Create ARC handle: 0xb400006f9b59f1e0 D/InputEventReceiver: Input log is disabled in InputEventReceiver. D/InputTransport: Input log is disabled in InputChannel. D/BufferQueueConsumer: [](id:58d000000000,api:0,p:-1,c:22736) connect: controlledByApp=false E/FBI : Can't load library: dlopen failed: library "libmagtsync.so" not found D/libMEOW : meow new tls: 0xb400006efb5ef0a0 D/libMEOW : applied 0 plugin for [org.qtproject.example.MobileTablet]. D/libMEOW : rebuild call chain: 0xb400006efb63f0f0 E/OpenGLRenderer: Unable to match the desired swap behavior. D/libMEOW : meow new tls: 0xb400006efb61f0d0 D/libMEOW : applied 0 plugin for [org.qtproject.example.MobileTablet]. D/libMEOW : rebuild call chain: 0xb400006efb64f100 D/BLASTBufferQueue: [VRI[QtActivity]#0](f:0,a:1) acquireNextBufferLocked size=2200x1440 mFrameNumber=1 applyTransaction=true mTimestamp=369794844350688(auto) mPendingTransactions.size=0 graphicBufferId=97650376441857 transform=7 D/default : 0 : QEvent::Polish D/default : 1 : QEvent::PlatformSurface D/default : 2 : QEvent::WinIdChange D/default : 3 : QEvent::WindowIconChange D/default : 4 : QEvent::WindowStateChange D/default : 5 : QEvent::Move D/default : 6 : QEvent::Resize D/default : 7 : QEvent::Show D/default : 8 : QEvent::Resize D/default : 9 : QEvent::Paint Art: Cleared App Profiles. D/BufferQueueConsumer: [](id:58d000000001,api:0,p:-1,c:22736) connect: controlledByApp=false D/BLASTBufferQueue: [SurfaceView[org.qtproject.example.MobileTablet/org.qtproject.qt.android.bindings.QtActivity]#1](f:0,a:1) acquireNextBufferLocked size=2200x1321 mFrameNumber=1 applyTransaction=true mTimestamp=369795041337150(auto) mPendingTransactions.size=0 graphicBufferId=97650376441866 transform=7 D/default : 10 : QEvent::WindowActivate D/default : 11 : QEvent::ActivationChange D/default : 12 : QEvent::InputMethodQuery D/default : 13 : QEvent::InputMethodQuery D/default : 14 : QEvent::InputMethodQuery D/default : 15 : QEvent::InputMethodQuery I/ImeTracker: org.qtproject.example.MobileTablet:c71a8ff8: onRequestHide at ORIGIN_CLIENT_HIDE_SOFT_INPUT reason HIDE_SOFT_INPUT_BY_INSETS_API I/ImeTracker: org.qtproject.example.MobileTablet:c71a8ff8: onCancelled at PHASE_CLIENT_APPLY_ANIMATION D/default : 16 : QEvent::ShowToParent D/default : 17 : QEvent::PolishRequest D/default : 18 : QEvent::UpdateLater D/default : 19 : QEvent::UpdateRequest D/default : 20 : QEvent::Paint Art: Compiled App Profiles. I/le.MobileTablet: Compiler allocated 6094KB to compile void android.view.ViewRootImpl.performTraversals() D/ProfileInstaller: Installing profile for org.qtproject.example.MobileTablet W/default : QObject: Cannot create children for a parent that is in a different thread. W/default : (Parent is QApplication(0x6e8347b6e0), parent's thread is QThread(0xb400006fdb56af30), current thread is QThread(0xb400006fdb582e90) W/default : QObject: Cannot create children for a parent that is in a different thread. W/default : (Parent is QApplication(0x6e8347b6e0), parent's thread is QThread(0xb400006fdb56af30), current thread is QThread(0xb400006fdb582e90) D/default : 21 : QEvent::TabletPress D/default : 22 : QEvent::UpdateRequest D/default : 23 : QEvent::Paint D/default : 24 : QEvent::TabletMove D/default : 25 : QEvent::InputMethodQuery D/default : 26 : QEvent::InputMethodQuery D/default : 27 : QEvent::InputMethodQuery D/default : 28 : QEvent::InputMethodQuery D/default : 29 : QEvent::UpdateRequest D/default : 30 : QEvent::Paint D/default : 31 : QEvent::InputMethodQuery D/default : 32 : QEvent::InputMethodQuery D/default : 33 : QEvent::InputMethodQuery D/default : 34 : QEvent::InputMethodQuery D/default : 35 : QEvent::InputMethodQuery D/default : 36 : QEvent::InputMethodQuery D/default : 37 : QEvent::InputMethodQuery D/default : 38 : QEvent::TabletRelease D/default : 39 : QEvent::UpdateRequest I/ScrollIdentify: on fling D/default : 40 : QEvent::Paint D/default : 41 : QEvent::ToolTip W/le.MobileTablet: userfaultfd: MOVE ioctl seems unsupported: Connection timed out D/default : 42 : QEvent::TabletPress D/default : 43 : QEvent::UpdateRequest D/default : 44 : QEvent::Paint D/default : 45 : QEvent::TabletMove D/default : 46 : QEvent::UpdateRequest D/default : 47 : QEvent::Paint D/default : 48 : QEvent::InputMethodQuery D/default : 49 : QEvent::InputMethodQuery D/default : 50 : QEvent::InputMethodQuery D/default : 51 : QEvent::InputMethodQuery D/default : 52 : QEvent::InputMethodQuery D/default : 53 : QEvent::InputMethodQuery D/default : 54 : QEvent::InputMethodQuery D/default : 55 : QEvent::TabletRelease D/default : 56 : QEvent::UpdateRequest I/ScrollIdentify: on fling D/default : 57 : QEvent::Paint D/default : 58 : QEvent::ToolTip

[Question withdrawn: The VFS feature is new in Qt 6.7, so my code just needs to upgrade from 6.5.3.]

6.9.3 will come out next week https://wiki.qt.io/Qt_6.9_Release

@Pruza For android build VS C++ compiler is not needed anymore. You can simply do it with QtCreator.

Thank you so much for your support . it works now.

@TP850 Have you installed Qt for Android yet?

Found out this is a known bug: https://bugreports.qt.io/browse/QTBUG-136493

@J-Hilk It all looks fine to me as well, this is why it's even more difficult to find the issue. Oh well, guess I have to spend more time on this than I had planned to. Thanks for all your help tho, I highly appreciate it! :)

https://bugreports.qt.io/browse/QTBUG-135011 for anyone else encountering this, I have opened a bug with the upstream https://bugreports.qt.io/browse/QTBUG-135011

It's not worked also with any popup Widgets, Dialogs, Menus, Popups, etc. Also issue persist in the latest 6.8.3 and 6.9.0 and caused by this changes - https://codereview.qt-project.org/c/qt/qtbase/+/568225 (https://bugreports.qt.io/browse/QTBUG-135253) A created a separate issue, with steps how to reproduce it with the latest Qt version - https://bugreports.qt.io/browse/QTBUG-135253

https://www.youtube.com/watch?v=m7etOQfrMiM

I had the same problem (on other platforms as well). I fixed it by using a Flickable for my display object, and modifying the contentY property when I displayed the keyboard: flickable.contentY = Math.max(0, (yValue + (height / 2)) - ((flickable.height - inputPanelPopup.height) / 2)) You'll probably need to modify the algorithm for your application, but the idea should work.

@Gracy The question is pretty old, but i know the answer... First, make sure, the permissions are added. Maybe you are missing the following: https://doc.qt.io/qtcreator/creator-deploying-android.html#editing-manifest-files To check and request permissions you can do: QFuture permission_request = QtAndroidPrivate::requestPermission("android.permission.WRITE_EXTERNAL_STORAGE"); switch(permission_request.result()) { case QtAndroidPrivate::Undetermined: qWarning() << "Permission for writing to the storage undetermined!"; break; case QtAndroidPrivate::Authorized: qDebug() << "Permission for writing to the storage authorized"; break; case QtAndroidPrivate::Denied: qWarning() << "Permission for writing to the storage denied!"; break; }

@BILAL-KHAN-34 Put the mouse cursor over the yellow warning icon to see the pop-up with the information about the problem.

That was a nasty one. Glad you found out and thanks for sharing !