[Android-development] putExtra (QString, QString) doesn't seem to work for me

[info at classintouch.de]

Hi,

I've got a problem with putting an extra into a pending intent. My goal
is to have a program restart with parameters/arguments.

@

auto pendingIntent =

        
QAndroidJniObject::callStaticObjectMethod("android/app/PendingIntent",
"getActivity",
           
"(Landroid/content/Context;ILandroid/content/Intent;I)Landroid/app/PendingIntent;",
            activity.object(), jint(0), activityIntent.object(),
           
QAndroidJniObject::getStaticField<jint>("android/content/Intent",
            "FLAG_ACTIVITY_CLEAR_TOP"));

// according to the docs, the following constructor just wraps the
original intent:

|QAndroidIntent realIntent(pendingIntent);|

|// put extra in:||realIntent.putExtra(QString("SCREEN"),
QString("Camera"));|

|// read extra out:|
|qDebug() << "realIntent: "<<realIntent.extraVariant("SCREEN").toString();|@

...results in just @realIntent: "" @,

whereas it should be @realIntent: "Camera"@

Instead, my output contains error messages that let me assume, that
there might be an implementation bug in Qt:

@

W System.err: java.lang.NoSuchMethodError: no non-static method
"Landroid/app/PendingIntent;.putExtra(Ljava/lang/String;[B)Landroid/content/Intent;"
W System.err:     at
org.qtproject.qt5.android.QtNative.startQtApplication(Native Method)
W System.err:     at
org.qtproject.qt5.android.QtNative$7.run(QtNative.java:620)
W System.err:     at
org.qtproject.qt5.android.QtThread$1.run(QtThread.java:61)
W System.err:     at java.lang.Thread.run(Thread.java:764)
W System.err: java.lang.NoSuchMethodError: no non-static method
"Landroid/app/PendingIntent;.getByteArrayExtra(Ljava/lang/String;)[B"
W System.err:     at
org.qtproject.qt5.android.QtNative.startQtApplication(Native Method)
W System.err:     at
org.qtproject.qt5.android.QtNative$7.run(QtNative.java:620)
W System.err:     at
org.qtproject.qt5.android.QtThread$1.run(QtThread.java:61)
W System.err:     at java.lang.Thread.run(Thread.java:764)

@

When I change the Intent's constructor to just

@ |QAndroidIntent realIntent;|

@

The output is as expected now, but of course the restart doesn't work.


I am on Qt 5.15.2, using clang on a Win10 machine. It doesn't seem to
matter, which sdk levels are targeted for or minimum.

For context: (apart from this: successfully) I use this approach (by
Bogdan) for restart:
https://www.kdab.com/qt-on-android-how-to-restart-your-application/

I need the extra (or any other way) to pass some information over to the
restarted app.


Shall I file this as a bug? Or do i misunderstand a concept? Is a
"Pending Intent" different to an "Intent"?

What else can I do? Any pointers, any workarounds are gratefully
appreciated!

Best regards

Sebastian


P.S.: I have tried to get help on this before, but on forum.qt.io nobody
could help me solve this and from android-qt at googlegroups.com I didn't
get a response at all. Sorry, if I violate any crossposting rules.

-- 
http://www.classintouch.de - Tablet-Software für Lehrer

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