This can be tested by enabling "Don't keep activities" in the developer
options. With this option Android will immediately destroy the activity
when it is moved to the background. In this case registerBackends will
be called the first time before the BackendRegister was created. Because
m_backendsRegistered was set to true even if it failed, the final call has
no effect. So we need to ensure to set m_backendsRegistered only if a
BackendRegister is available.
Fixes: QTBUG-132085
Pick-to: 6.9 6.8
Change-Id: I2ea1c0e0737c982594ceb06cbaf540399c45e3f4
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
This class will be used by java delegates to register their supported
functionalities to the Qt/C++ side.
It registers two native functions: register- and
unregisterBackend, which will be used by the aforementioned
delegates.
It will be used by C++ classes which currently use
QtAndroid::qtActivityDelegate() to access a JNI object which implements
all these features in one big class.
Task-number: QTBUG-118874
Change-Id: I23a7e433104c20b96c08b682a96cfaec98ecb4a9
Reviewed-by: Tinja Paavoseppä <tinja.paavoseppa@qt.io>
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
