Qt 6.8.0 - Replacement for QtNative.activity()

NaLogo

Hello everyone.

I'm looking into migrating a project from Qt 6.5 to Qt 6.8

In a Java class, I am accessing the Qt Activity using QtNative.activity() - this no longer works due to 6.8 changing the activity() from public to private.

Is there a replacement for this? A way to access the activity without having to pass it to a method myself?

NaLogo

My workaround for the time being is as follows:

Construct the Java class when the related C++ class is constructed
Set Activity for the class
Call static methods like before

Java:

private static Activity m_activity = null;

public void setActivity(Activity activity) {
    m_activity = activity;
    return;
}

also change all methods that previously called QtNative.activity() to now check for and use m_activity instead.

C++:

mJNIInstance = QJniObject("the/qualified/ClassPath");
if (mJNIInstance.isValid()) {
    mJNIInstance.callMethod<void>("setActivity", "(Landroid/app/Activity;)V", QNativeInterface::QAndroidApplication::context().object());
} else {
    // output a warning or error
}

Parvathy2020

Hi @NaLogo , If you got solution for the above mentioned problem , can you please provide the changes you made to resolve the issue. Thanks in advance !

jsulm

@NaLogo Take a look at https://forum.qt.io/topic/159644/qt-6-8-emailsender-activity-is-not-public-in-qtnative-cannot-be-accessed-from-outside-package/6

NaLogo

@jsulm said in Qt 6.8.0 - Replacement for QtNative.activity():

@NaLogo Take a look at https://forum.qt.io/topic/159644/qt-6-8-emailsender-activity-is-not-public-in-qtnative-cannot-be-accessed-from-outside-package/6

Like the user in that thread you linked pointed out, it doesn't work like that. The reason for that being what I wrote in my original post: The scope of the method QtNative.activity() in QtNative.java was changed from public to private (by removing the scope) between Qt 6.5 and Qt 6.8

@Parvathy2020 said in Qt 6.8.0 - Replacement for QtNative.activity():

Hi @NaLogo , If you got solution for the above mentioned problem , can you please provide the changes you made to resolve the issue. Thanks in advance !

I haven't tried it yet, but it probably requires an additional call that will pass the activity from the main app to the native class (storing it in a variable, of course) before calling the method you actually want. I'll post the results here when and if I get around to trying it.

NaLogo

My workaround for the time being is as follows:

Construct the Java class when the related C++ class is constructed
Set Activity for the class
Call static methods like before

Java:

private static Activity m_activity = null;

public void setActivity(Activity activity) {
    m_activity = activity;
    return;
}

also change all methods that previously called QtNative.activity() to now check for and use m_activity instead.

C++:

mJNIInstance = QJniObject("the/qualified/ClassPath");
if (mJNIInstance.isValid()) {
    mJNIInstance.callMethod<void>("setActivity", "(Landroid/app/Activity;)V", QNativeInterface::QAndroidApplication::context().object());
} else {
    // output a warning or error
}