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QApplication was not created in the main() thread. Android + calling java
joant7 last edited by
I am getting that warning QApplication was not created in the main() thread.
The app is C++ calling some java functions, all encapsulated in a class extending org.qtproject.qt5.android.bindings.QtActivity
I am already creating the QApplication in the main() function so I see no way to fix that.
Until now all was running fine anyway but with Android 5 the app does not start. The error is not explicitly there but later there's an exception
bq. java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
when calling QAndroidJniEnvironment::RegisterNatives. that souns very likely to be related.
Has anyone experienced something similar? (I've seen similar threads but not one related to android + calling java)
I have written an example program that can call Java from C++ and C++ from Java's UI thread. You may take a look: