Mobile and Embedded

@Farias I guess Qt5 uses gstreamer and might have only a playbin in it. It may not handle hardware acceleration. Maybe try Qt6 for luck. Or write your own pipeline to make HW acceleration.

The height is in native scale. It is required to devide it by devicePixelRatio:

@Ivelin
like this
install(FILES
android/AndroidManifest.xml
android/gradle/wrapper/gradle-wrapper.jar
android/gradlew
android/build.gradle
android/gradlew.bat
android/gradle/wrapper/gradle-wrapper.properties
android/res/values/libs.xml
android/src/com/example/ExtendsQtWithNative.java
android/src/com/example/ExtendsQtWithJava.java
DESTINATION .
)

@Faust-Faust said in QTimer not work:

I tried the code you suggested and it actually crashes

Which proves that the timer is working. This was intended by @Axel-Spoerl , nothing absurd about it.
Please read https://doc.qt.io/qt-5/qtglobal.html#qFatal - qFatal will terminate your app ("If you are using the default message handler this function will abort")

have you tried QDesktopServices (https://doc.qt.io/qt-6/qdesktopservices.html) to open the pdf inside your app with Pdf app outside ?

Please boil it down to a simple reproducer that has no more than a few lines.

The reproducer is missing in the ticket.
Please add an archive, that can be downloaded, compiled, deployed and run out of the box.

That's actually independent from Qt version used. Android now requires a signed certificate for remote deployment. Previously you only needed that for deployment in the playstore, but that changed a while ago.

I'm not sure if all builds require it, but release builds for sure!

@adddeeee in Qt creator, click on project, in the section Build Steps expand the entry Build android APK
First entry there should be Application Signature. If you already have a key, link it there and enter your password. If not click on create and follow the steps.

image.png

It is inside application binary. You can access it using qtc:/ or :/ paths (this will work only in Qt code, not in Java). More info: https://doc.qt.io/qt-6/resources.html

That doesn’t help.
Post a minimal reproducer please, without using designer.

I have just discovered that you can trigger this problem simply by unchecking:

Edit -> Preferences ... -> Build & Run -> "Always deploy project before running it"

then making changes and rebuilding the project.

Turning this option back on solves the problem - without having to use the sledgehammer of removing the AppData/Roaming/QtProject folder!

It makes sense, I suppose, though I believe this was not the case in earlier versions of Qt. I am using QtCreator 14.0.1 on Qt6.7.2.

@jsulm said in undefined reference to `sm3_digest':

Are the missing functions part of the gmssl library?

Yes, it is part of the library. And the library is constructed using the same compiler.

@DerReisende said in IOS: Get the device serial number:

https://forums.developer.apple.com/forums/thread/723418

Thank you for the information.

thanks. now it works

It looks like your Android configuration is broken from the start. As your screenshot says, command line tools, platform and essential packages are missing.
There is plenty of documentation about how to set it up and it’s also available for Qt 5.15. Start here:
https://doc.qt.io/qt-5/android-getting-started.html#android-sdk