* Update LifecycleState by App Lifecycle Listener

* Add LegacyLifecycleState

Author: prongbang

CHANGELOG.md

@@ -1,3 +1,8 @@
+## 1.3.1
+
+* Update LifecycleState by App Lifecycle Listener
+* Add LegacyLifecycleState
+
 ## 1.3.0
 
 * Add function protect data leakage with blur off for iOS only

example/pubspec.lock

@@ -121,7 +121,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.3.0"
+    version: "1.3.1"
   sky_engine:
     dependency: transitive
     description: flutter

lib/lifecycle/legacy_lifecycle_state.dart

@@ -0,0 +1,68 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+
+abstract class LegacyLifecycleState<T extends StatefulWidget> extends State<T>
+    with WidgetsBindingObserver {
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addObserver(this);
+  }
+
+  @override
+  void dispose() {
+    WidgetsBinding.instance.removeObserver(this);
+    super.dispose();
+  }
+
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    switch (state) {
+      case AppLifecycleState.resumed:
+        onResumed();
+        break;
+      case AppLifecycleState.inactive:
+        onPaused();
+        break;
+      case AppLifecycleState.paused:
+        onInactive();
+        break;
+      case AppLifecycleState.detached:
+        onDetached();
+        break;
+      case AppLifecycleState.hidden:
+        onHidden();
+        break;
+    }
+  }
+
+  void onResumed() {
+    if (kDebugMode) {
+      print("on resumed");
+    }
+  }
+
+  void onPaused() {
+    if (kDebugMode) {
+      print("on paused");
+    }
+  }
+
+  void onInactive() {
+    if (kDebugMode) {
+      print("on inactive");
+    }
+  }
+
+  void onDetached() {
+    if (kDebugMode) {
+      print("on detached");
+    }
+  }
+
+  void onHidden() {
+    if (kDebugMode) {
+      print("on hidden");
+    }
+  }
+}

lib/lifecycle/lifecycle_state.dart

@@ -1,11 +1,16 @@
+import 'dart:ui';
+
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
 abstract class LifecycleState<T extends StatefulWidget> extends State<T>
     with WidgetsBindingObserver {
+  AppLifecycleState? _lifecycleState;
+
   @override
   void initState() {
     super.initState();
+    _lifecycleState = WidgetsBinding.instance.lifecycleState;
     WidgetsBinding.instance.addObserver(this);
   }
 
@@ -15,23 +20,87 @@ abstract class LifecycleState<T extends StatefulWidget> extends State<T>
     super.dispose();
   }
 
+  @override
+  Future<AppExitResponse> didRequestAppExit() async {
+    onExitRequested();
+    return AppExitResponse.exit;
+  }
+
+  /// [App Lifecycle Listener](https://miro.medium.com/v2/resize:fit:1400/0*bN0QtrIRWGDMC9LJ)
+  ///
+  /// detached -> resumed -|
+  ///    ^                 v
+  ///    |             inactive
+  /// paused <- hidden <--|
+  ///
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
+    final AppLifecycleState? previousState = _lifecycleState;
+    if (state == previousState) {
+      // Transitioning to the same state twice doesn't produce any notifications (but also won't actually occur).
+      return;
+    }
+    _lifecycleState = state;
     switch (state) {
       case AppLifecycleState.resumed:
         onResumed();
         break;
       case AppLifecycleState.inactive:
-        onPaused();
+        if (previousState == AppLifecycleState.hidden) {
+          onShow();
+        } else if (previousState == null ||
+            previousState == AppLifecycleState.resumed) {
+          onInactive();
+        }
+        break;
+      case AppLifecycleState.hidden:
+        if (previousState == AppLifecycleState.paused) {
+          onRestart();
+        } else if (previousState == null ||
+            previousState == AppLifecycleState.inactive) {
+          onHidden();
+        }
         break;
       case AppLifecycleState.paused:
-        onInactive();
+        if (previousState == null ||
+            previousState == AppLifecycleState.hidden) {
+          onPaused();
+        }
         break;
       case AppLifecycleState.detached:
         onDetached();
         break;
       default:
     }
+
+    // At this point, it can't be null anymore.
+    if (_lifecycleState != null) {
+      onStateChange(_lifecycleState!);
+    }
+  }
+
+  void onExitRequested() {
+    if (kDebugMode) {
+      print("on exit requested");
+    }
+  }
+
+  void onStateChange(AppLifecycleState state) {
+    if (kDebugMode) {
+      print("on state change: $state");
+    }
+  }
+
+  void onShow() {
+    if (kDebugMode) {
+      print("on show");
+    }
+  }
+
+  void onHidden() {
+    if (kDebugMode) {
+      print("on hidden");
+    }
   }
 
   void onResumed() {
@@ -57,4 +126,10 @@ abstract class LifecycleState<T extends StatefulWidget> extends State<T>
       print("on detached");
     }
   }
+
+  void onRestart() {
+    if (kDebugMode) {
+      print("on restart");
+    }
+  }
 }

pubspec.yaml

@@ -1,6 +1,6 @@
 name: screen_protector
 description: Safe Data Leakage via Application Background Screenshot and Prevent Screenshot for Android and iOS.
-version: 1.3.0
+version: 1.3.1
 homepage: https://github.com/prongbang/screen_protector
 
 environment:
@@ -14,7 +14,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  flutter_lints: ^2.0.2
+  flutter_lints: ^2.0.3
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec