After QT5 -> QT6 porting: No package identifier when getting name for resource number 0x00000000 - Problem with Manifest?

[Hitokage]

Hi, I got the following problem after porting my app to QT6. I can run in on desktop but can't make it work on Android. It gets installed but the result is a white screen with the app name and icon at the very top.

This is what QT Creator shows when the app is deployed and "running":

W ActivityThread: Application org.dontpanic can be debugged on port 8100...
W zygote64: miui_dex2oat:　OatFile: /data/app/org.dontpanic-kAoNR5acxqZK06dj0v31KQ==/oat/arm64/base.odex Compiler-Filter = quicken
W ResourceType: No package identifier when getting name for resource number 0x00000000
W ResourceType: No package identifier when getting name for resource number 0x00000000
W ResourceType: No package identifier when getting value for resource number 0x00000000
E Qt      : Can't create main activity
E Qt      : android.content.res.Resources$NotFoundException: String resource ID #0x0
E Qt      : 	at android.content.res.Resources.getText(Resources.java:351)
E Qt      : 	at android.content.res.MiuiResources.getText(MiuiResources.java:97)
E Qt      : 	at android.content.res.Resources.getString(Resources.java:445)
E Qt      : 	at org.qtproject.qt.android.bindings.QtLoader.startApp(QtLoader.java:254)
E Qt      : 	at org.qtproject.qt.android.bindings.QtActivityLoader.onCreate(QtActivityLoader.java:135)
E Qt      : 	at org.qtproject.qt.android.bindings.QtActivity.onCreateHook(QtActivity.java:263)
E Qt      : 	at org.qtproject.qt.android.bindings.QtActivity.onCreate(QtActivity.java:283)
E Qt      : 	at android.app.Activity.performCreate(Activity.java:7088)
E Qt      : 	at android.app.Activity.performCreate(Activity.java:7079)
E Qt      : 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1215)
E Qt      : 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770)
E Qt      : 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2895)
E Qt      : 	at android.app.ActivityThread.-wrap11(Unknown Source:0)
E Qt      : 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1616)
E Qt      : 	at android.os.Handler.dispatchMessage(Handler.java:106)
E Qt      : 	at android.os.Looper.loop(Looper.java:176)
E Qt      : 	at android.app.ActivityThread.main(ActivityThread.java:6651)
E Qt      : 	at java.lang.reflect.Method.invoke(Native Method)
E Qt      : 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
E Qt      : 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:824)

After reading some other threads I suspect the Manifest file to cause this. I have followed the instructions here, especially by removing the deprecated lines but nothing helped. Here is my manifest:

<?xml version="1.0"?>
<manifest package="org.dontpanic" xmlns:android="http://schemas.android.com/apk/res/android" android:versionName="2.0" android:versionCode="20000" android:installLocation="auto">
    <uses-sdk android:minSdkVersion="23" android:targetSdkVersion="31"/>
    <supports-screens android:largeScreens="true" android:normalScreens="true" android:anyDensity="true" android:smallScreens="true" android:extractNativeLibs="true"/>

    <application android:hardwareAccelerated="true" android:name="org.qtproject.qt.android.bindings.QtApplication" android:label="@string/app_name" android:icon="@drawable/icon">
        <activity android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation|mcc|mnc" android:name="org.qtproject.qt.android.bindings.QtActivity" android:label="@string/app_name" android:screenOrientation="sensorPortrait" android:launchMode="singleTop">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
            <meta-data android:name="android.app.lib_name" android:value="-- %%INSERT_APP_LIB_NAME%% --"/>
            <meta-data android:name="android.app.background_running" android:value="false"/>
        </activity>
        <service android:name="org.dontpanic.NotificationService">
            <meta-data android:name="android.app.lib_name" android:value="-- %%INSERT_APP_LIB_NAME%% --"/>
        </service>
        <receiver android:name="org.dontpanic.NotificationReceiver" android:enabled="true" android:exported="true"/>
        <receiver android:name="org.dontpanic.RebootReceiver" android:enabled="true" android:exported="true">
      <intent-filter>
            <action android:name="android.intent.action.BOOT"/>
            <action android:name="android.intent.action.LOCKED_BOOT_COMPLETED"/>
            <action android:name="android.intent.action.BOOT_COMPLETED"/>
            <action android:name="android.intent.action.QUICKBOOT_POWERON"/>
            <action android:name="android.intent.action.REBOOT"/>
            <action android:name="com.htc.intent.action.QUICKBOOT_POWERON"/>
            <action android:name="android.intent.action.USER_PRESENT"/>

            <category android:name="android.intent.category.DEFAULT"/>
        </intent-filter>
</receiver>
    </application>

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
</manifest>

Do I have to change anything else? Like the gradle files or something? Here is the rest of the project if needed.
Thanks!

[Hitokage]

I have found a solution! I did multiple things:

• Used newer template files for Android from Qt/6.2.3/android_arm64_v8a/src/android/templates/ (res/values/libs.xml - overwritten, build.gradle - overwritten, AndroidManifest.xml - copy and paste and then edited the content and added the missing things from my old one)
• Used newer gradle files from /Qt/6.2.3/android_arm64_v8a/src/3rdparty/gradle/gradle/wrapper/ - overwritten
• Upgrade of Qt Creator, Qt 6.2.2 -> 6.2.3, Android SDK, Android NDK

My current Manifest:

<?xml version="1.0"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.dontpanic"
    android:installLocation="auto"
    android:versionCode="20000"
    android:versionName="2.0">
    <uses-sdk android:minSdkVersion="23" android:targetSdkVersion="31"/>
    <!-- The comment below will be replaced with dependencies permissions upon deployment.
             Remove the comment if you do not require these default permissions. -->
    <!-- %%INSERT_PERMISSIONS -->

    <!-- The comment below will be replaced with dependencies permissions upon deployment.
             Remove the comment if you do not require these default features. -->
    <!-- %%INSERT_FEATURES -->

    <supports-screens
        android:anyDensity="true"
        android:largeScreens="true"
        android:normalScreens="true"
        android:smallScreens="true" />
    <application
        android:name="org.qtproject.qt.android.bindings.QtApplication"
        android:extractNativeLibs="true"
        android:hardwareAccelerated="true"
        android:label="@string/app_name"
        android:icon="@drawable/icon"
        android:requestLegacyExternalStorage="true">
        <activity
            android:name="org.qtproject.qt.android.bindings.QtActivity"
            android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation|mcc|mnc|density"
            android:label="@string/app_name"
            android:launchMode="singleTop"
            android:screenOrientation="portrait">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
            <!-- Application arguments -->

            <meta-data
                android:name="android.app.arguments"
                android:value="-- %%INSERT_APP_ARGUMENTS%% --" />
            <!-- Application arguments -->
            <meta-data
                android:name="android.app.lib_name"
                android:value="-- %%INSERT_APP_LIB_NAME%% --" />

            <!-- Background running -->
            <!-- Warning: changing this value to true may cause unexpected crashes if the
                          application still try to draw after
                          "applicationStateChanged(Qt::ApplicationSuspended)" signal is sent! -->
            <meta-data
                android:name="android.app.background_running"
                android:value="false" />
            <!-- Background running -->

            <!-- extract android style -->
            <!-- available android:values :
                * default - In most cases this will be the same as "full", but it can also be
                *           something else if needed, e.g., for compatibility reasons
                * full - useful QWidget & Quick Controls 1 apps
                * minimal - useful for Quick Controls 2 apps, it is much faster than "full"
                * none - useful for apps that don't use any of the above Qt modules -->
            <meta-data
                android:name="android.app.extract_android_style"
                android:value="minimal" />
            <!-- extract android style -->
        </activity>
        <service android:name="org.dontpanic.NotificationService">
            <meta-data android:name="android.app.lib_name" android:value="-- %%INSERT_APP_LIB_NAME%% --"/>
        </service>
        <receiver android:name="org.dontpanic.NotificationReceiver" android:enabled="true" android:exported="true"/>
        <receiver android:name="org.dontpanic.RebootReceiver" android:enabled="true" android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.BOOT"/>
            <action android:name="android.intent.action.LOCKED_BOOT_COMPLETED"/>
            <action android:name="android.intent.action.BOOT_COMPLETED"/>
            <action android:name="android.intent.action.QUICKBOOT_POWERON"/>
            <action android:name="android.intent.action.REBOOT"/>
            <action android:name="com.htc.intent.action.QUICKBOOT_POWERON"/>
            <action android:name="android.intent.action.USER_PRESENT"/>
            <category android:name="android.intent.category.DEFAULT"/>
        </intent-filter>
        </receiver>
    </application>    
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
</manifest>