Android 15 (API 35) / Qt 6.9.1: SafeArea=0 at startup in plain Window; content under notch/nav until TextField focus

[ekkescorner]

@Pann sorry I forgot these lines
in ApplicationWindow:

flags: Qt.platform.os === "android"? Qt.Window : Qt.ExpandedClientAreaHint | Qt.NoTitleBarBackgroundHint

and Component.onCompleted:

if(Qt.platform.os === "android") {
            window.flags = Qt.ExpandedClientAreaHint | Qt.NoTitleBarBackgroundHint
            window.visibility = Window.Windowed
        }

[BTSTOnline]

I've tried this solution (currently working with Qt 6.10)... and it has no effect.
My app STILL shows up under the Status Bar and Navigation Bar on startup... Rotating to landscape and back fixes this... but, when in landscape, it shows up under the Nav Bar, but not the Status Bar.

[ekkescorner]

just noticed that my workaround isn't always working :(
runs on Android 14 Motorola Device, Android 13 Samsung Device,
but fails on Android 15 Pixel9a Device
seems we have to wait for 6.9.2: https://bugreports.qt.io/browse/QTBUG-135808

[J.Hilk]

I actually react on the onCompleted

Component.onCompleted: {
        applyNewMargins()
    }

to fetch the safe area margins

function applyNewMargins(){
        if(isMobile){
            var map =           safeMargins.getSafeAreaMargins(mainWindow)
            safeMarginLeft =    map["left"] * 2 / 3
            safeMarginRight =   map["right"] * 2 / 3
            safeMarginTop =     map["top"] * 2 / 3
            safeMarginBottom =  map["bottom"] * 2 / 3
        }
}

from my c++ backend. Haven't noticed any new timing issues. But this was ma solution way back in the day where the margins weren't available on application start. Don't see any flickering either

[ekkescorner]

thx for the info.
I want to use the Qt 6.9 SafeArea. works well on iOS and hopefully with 6.9.2 on Android, too - so ATM I'll wait for 6.9.2

[ekkescorner]

BTW: if you want to opt-out from Android-35 edge-to-edge
you have to add styles.xml and add in Manifest... activity... android:theme="@style/NormalTheme"
see the details here:
https://codereview.qt-project.org/c/qt/qtbase/+/630376

[BTSTOnline]

@ekkescorner said in Android 15 (API 35) / Qt 6.9.1: SafeArea=0 at startup in plain Window; content under notch/nav until TextField focus:

BTW: if you want to opt-out from Android-35 edge-to-edge
you have to add styles.xml and add in Manifest... activity... android:theme="@style/NormalTheme"
see the details here:
https://codereview.qt-project.org/c/qt/qtbase/+/630376

This worked for me...Thanks!

[ekkescorner]

@BTSTOnline cool :)

[garycho]

@Pann Tapping into a a TextField , brings up the virtual keyboard - this is what corrects the safeArea . Programmatically bring up the virtual keyboard to achieves the same effect.

[garycho]

I figured out a temporarily workaround by bringing up the virtual keyboard, which initializes the SafeArea margins correctly, and hide the keyboard immediately. At your constructor add this

connect(QGuiApplication::inputMethod(),SIGNAL(visibleChanged()),this,SLOT(closeKeyboard()));
QGuiApplication::inputMethod()->show();

Then create a slot

void MyApp::closeKeyboard()
{
    if (QGuiApplication::inputMethod()->isVisible())
    {
        QGuiApplication::inputMethod()->hide();
        disconnect(QGuiApplication::inputMethod(),SIGNAL(visibleChanged()),this,SLOT(closeKeyboard()));
    }
}

On activation of the virtual keyboard, the visibleChanged() signal will trigger the closeKeyboard() slot. This hides the keyboard and disconnects the signal/slot. You may get a glimpse of keyboard animating in/out... I find this to be a reliable workaround and easiest to undo , once this bug is fixed.

[ekkescorner]

Qt 6.9.3 should fix this and is scheduled for today - or coming soon ;-)

current state of Bugs around Safe Areas:

6.9.3:

• fixes getting SafeArea values at startup for Android 9 to 16, Android SplitScreen should also work
• (https://bugreports.qt.io/browse/QTBUG-135808)
• Android NavigationBar in SwipeViews and more fixed in 6.9.3 and 6.10.1, but NOT in 6.10.0 !
• (https://bugreports.qt.io/browse/QTBUG-139690)
• fixes Android orientation -flicker and half-screen-glitches
  (https://bugreports.qt.io/browse/QTBUG-132718)

6.10.0:

• same as 6.9.3, BUT:
• Android NavigationBar in SwipeViews and more fixed in 6.9.3 and 6.10.1, but NOT in 6.10.0 !
• (https://bugreports.qt.io/browse/QTBUG-139690)

6.10.1:

• Android problems with color scheme fixed
• (https://bugreports.qt.io/browse/QTBUG-137248)
• Android NavigationBar in SwipeViews and more fixed in 6.9.3 and 6.10.1, but NOT in 6.10.0 !
• (https://bugreports.qt.io/browse/QTBUG-139690)

[garycho]

@ekkescorner Thanks for the information Looking forward to the fix. I've been spending too much time, finding ways around this bug.

[ekkescorner]

and 6.9.3 is here :) https://www.qt.io/blog/qt-6.9.3-released

edit: just did first tests with 6.9.3 on Android: now SafeArea values are there from start, also NavigationBar much better now :)

[ekkescorner]

@garycho said in Android 15 (API 35) / Qt 6.9.1: SafeArea=0 at startup in plain Window; content under notch/nav until TextField focus:

I've been spending too much time, finding ways around this bug

yep. always much time spending to report and follow all the bugreports and writing test applications like https://github.com/ekke/ekkesTestStatusBar
will update my test app next days with experiences from 6.9.3

[garycho]

@ekkescorner Excellent. Just compiled with 6.9.3 and the SafeArea margin is set correctly on start . The navigation bar is now grey instead of black.

[ekkescorner]

@garycho said in Android 15 (API 35) / Qt 6.9.1: SafeArea=0 at startup in plain Window; content under notch/nav until TextField focus:

SafeArea margin is set correctly on start

great to hear that it also works for you :)