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Android: Add possibility to listen for changes in app states

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This is useful for example the embedded QML case, where we want to
make sure everything from Qt side is ready before we start to create
Qt windows.

Change-Id: I8148405e35cc8ebb89110f05e07cef06f8ff3709
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
(cherry picked from commit 6102ee6dd8f3e6cee3e3bc7544329c5c4b7843f0)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Tinja Paavoseppä 2023-12-08 18:08:07 +02:00 committed by Qt Cherry-pick Bot
parent b01235ca3f
commit 023dd3adb1
1 changed files with 31 additions and 0 deletions
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31
src/android/jar/src/org/qtproject/qt/android/QtNative.java
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@ -47,6 +47,8 @@ class QtNative
private static ClassLoader m_classLoader = null;
private static final Runnable runPendingCppRunnablesRunnable = QtNative::runPendingCppRunnables;
private static final ArrayList<AppStateDetailsListener> m_appStateListeners = new ArrayList<>();
private static final Object m_appStateListenersLock = new Object();
@UsedFromNativeCode
public static ClassLoader classLoader()
@ -193,6 +195,10 @@ class QtNative
return m_qtThread;
}
interface AppStateDetailsListener {
void onAppStateDetailsChanged(ApplicationStateDetails details);
}
// Keep in sync with src/corelib/global/qnamespace.h
public static class ApplicationState {
static final int ApplicationSuspended = 0x0;
@ -215,12 +221,14 @@ class QtNative
public static void setStarted(boolean started)
{
m_stateDetails.isStarted = started;
notifyAppStateDetailsChanged(m_stateDetails);
}
@UsedFromNativeCode
public static void notifyNativePluginIntegrationReady(boolean ready)
{
m_stateDetails.nativePluginIntegrationReady = ready;
notifyAppStateDetailsChanged(m_stateDetails);
}
public static void setApplicationState(int state)
@ -234,6 +242,27 @@ class QtNative
}
}
updateApplicationState(state);
notifyAppStateDetailsChanged(m_stateDetails);
}
static void registerAppStateListener(AppStateDetailsListener listener) {
synchronized (m_appStateListenersLock) {
if (!m_appStateListeners.contains(listener))
m_appStateListeners.add(listener);
}
}
static void unregisterAppStateListener(AppStateDetailsListener listener) {
synchronized (m_appStateListenersLock) {
m_appStateListeners.remove(listener);
}
}
static void notifyAppStateDetailsChanged(ApplicationStateDetails details) {
synchronized (m_appStateListenersLock) {
for (AppStateDetailsListener listener : m_appStateListeners)
listener.onAppStateDetailsChanged(details);
}
}
// Post a runnable to Main (UI) Thread if the app is active,
@ -289,6 +318,7 @@ class QtNative
m_qtThread.post(QtNative::startQtApplication);
waitForServiceSetup();
m_stateDetails.isStarted = true;
notifyAppStateDetailsChanged(m_stateDetails);
}
}
@ -301,6 +331,7 @@ class QtNative
if (isServiceValid())
m_service.get().stopSelf();
m_stateDetails.isStarted = false;
// Likely no use to call notifyAppStateDetailsChanged at this point since we are exiting
});
}