Android: Fix Application becomes unresponsive issue

Block key events until the plugin is running.

Fixes: QTBUG-67944
Pick-to: 5.15 6.1
Change-Id: Iea47f2e94d850141834a7e8fc26218be2cacf660
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>

3 files changed, 11 insertions, 0 deletions

diff --git a/src/plugins/platforms/android/androidjnimain.cpp b/src/plugins/platforms/android/androidjnimain.cpp
index 7b1182066d..6dff19f3d5 100644
--- a/src/plugins/platforms/android/androidjnimain.cpp
+++ b/src/plugins/platforms/android/androidjnimain.cpp
@@ -223,6 +223,11 @@ namespace QtAndroid
         QJniObject::callStaticMethod<void>(m_applicationClass, "notifyObjectFocus","(I)V", accessibilityObjectId);
     }
 
+    void notifyQtAndroidPluginRunning(bool running)
+    {
+        QJniObject::callStaticMethod<void>(m_applicationClass, "notifyQtAndroidPluginRunning","(Z)V", running);
+    }
+
     jobject createBitmap(QImage img, JNIEnv *env)
     {
         if (!m_bitmapClass)
diff --git a/src/plugins/platforms/android/androidjnimain.h b/src/plugins/platforms/android/androidjnimain.h
index db7ba4367f..c7dd5c0ca0 100644
--- a/src/plugins/platforms/android/androidjnimain.h
+++ b/src/plugins/platforms/android/androidjnimain.h
@@ -103,6 +103,7 @@ namespace QtAndroid
     void notifyAccessibilityLocationChange();
     void notifyObjectHide(uint accessibilityObjectId);
     void notifyObjectFocus(uint accessibilityObjectId);
+    void notifyQtAndroidPluginRunning(bool running);
 
     const char *classErrorMsgFmt();
     const char *methodErrorMsgFmt();
diff --git a/src/plugins/platforms/android/qandroidplatformintegration.cpp b/src/plugins/platforms/android/qandroidplatformintegration.cpp
index bb25329ec1..7b4102fac6 100644
--- a/src/plugins/platforms/android/qandroidplatformintegration.cpp
+++ b/src/plugins/platforms/android/qandroidplatformintegration.cpp
@@ -88,6 +88,7 @@ Qt::ScreenOrientation QAndroidPlatformIntegration::m_orientation = Qt::PrimaryOr
 Qt::ScreenOrientation QAndroidPlatformIntegration::m_nativeOrientation = Qt::PrimaryOrientation;
 
 bool QAndroidPlatformIntegration::m_showPasswordEnabled = false;
+static bool m_running = false;
 
 void *QAndroidPlatformNativeInterface::nativeResourceForIntegration(const QByteArray &resource)
 {
@@ -156,6 +157,10 @@ void QAndroidPlatformNativeInterface::customEvent(QEvent *event)
     api->accessibility()->setActive(QtAndroidAccessibility::isActive());
 #endif // QT_NO_ACCESSIBILITY
 
+    if (!m_running) {
+        m_running = true;
+        QtAndroid::notifyQtAndroidPluginRunning(m_running);
+    }
     api->flushPendingUpdates();
 }