From b8bcb238d8f87e26aafe592f791a7509b08be610 Mon Sep 17 00:00:00 2001
From: GabrieleVolpato <gabriele.volpato@gmail.com>
Date: Thu, 16 Aug 2018 15:38:51 +0200
Subject: [PATCH] Unregister ActivityLifecycleCallbacks
Any time the FlutterActivity registers for this plugin, the plugin itself registers to the ActivityLifecycleCallbacks. This is a problem because, if you close the FlutterActivity but not the application (by using the hardware back button, for instance), when you restart the activity, it registers again, causing a crash on the first onPause call.
Since Flutter only uses one FlutterActivity, it's safe to unregister for the ActivityLifecycleCallbacks when it gets destroyed.
Steps to reproduce the problem:
- Create app using this plugin and open it once
- Close the application by pushing the back button of your device
- Reopen the application
- Try to go back to your device home by using the back or home button -> CRASH.
---
android/src/main/kotlin/io/intheloup/beacons/BeaconsPlugin.kt | 1 +
1 file changed, 1 insertion(+)
diff --git a/android/src/main/kotlin/io/intheloup/beacons/BeaconsPlugin.kt b/android/src/main/kotlin/io/intheloup/beacons/BeaconsPlugin.kt
index f87e451..404a8e9 100644
--- a/android/src/main/kotlin/io/intheloup/beacons/BeaconsPlugin.kt
+++ b/android/src/main/kotlin/io/intheloup/beacons/BeaconsPlugin.kt
@@ -34,6 +34,7 @@ class BeaconsPlugin(val registrar: Registrar) {
override fun onActivityDestroyed(activity: Activity) {
beaconClient.unbind()
permissionClient.unbind()
+ activity.application.unregisterActivityLifecycleCallbacks(this)
}
override fun onActivityResumed(activity: Activity?) {