Merge pull request #252 from ened/4.4.0+hotfix.2-bg-fix

4.4.0+hotfix.2 bg fix

permission_handler/android/src/main/java/com/baseflow/permissionhandler/MethodCallHandlerImpl.java

@@ -5,6 +5,7 @@ import android.content.Context;
 
 import androidx.annotation.NonNull;
 
+import androidx.annotation.Nullable;
 import io.flutter.plugin.common.BinaryMessenger;
 import io.flutter.plugin.common.MethodCall;
 import io.flutter.plugin.common.MethodChannel;
@@ -16,38 +17,45 @@ import java.util.List;
 
 final class MethodCallHandlerImpl implements MethodChannel.MethodCallHandler {
     private final Context applicationContext;
-    private final Activity activity;
     private final AppSettingsManager appSettingsManager;
     private final PermissionManager permissionManager;
     private final ServiceManager serviceManager;
-    private final ActivityRegistry activityRegistry;
-    private final PermissionRegistry permissionRegistry;
-    private final MethodChannel methodChannel;
 
     MethodCallHandlerImpl(
             Context applicationContext,
-            Activity activity,
-            BinaryMessenger messenger,
             AppSettingsManager appSettingsManager,
             PermissionManager permissionManager,
-            ServiceManager serviceManager,
-            ActivityRegistry activityRegistry,
-            PermissionRegistry permissionRegistry) {
+            ServiceManager serviceManager) {
         this.applicationContext = applicationContext;
-        this.activity = activity;
         this.appSettingsManager = appSettingsManager;
         this.permissionManager = permissionManager;
         this.serviceManager = serviceManager;
-        this.activityRegistry = activityRegistry;
-        this.permissionRegistry = permissionRegistry;
+    }
+
+    @Nullable
+    private Activity activity;
+
+    @Nullable
+    private ActivityRegistry activityRegistry;
+
+    @Nullable
+    private PermissionRegistry permissionRegistry;
+
+    public void setActivity(@Nullable Activity activity) {
+      this.activity = activity;
+    }
+
+    public void setActivityRegistry(
+        @Nullable ActivityRegistry activityRegistry) {
+      this.activityRegistry = activityRegistry;
+    }
 
-        methodChannel = new MethodChannel(
-                messenger,
-                "flutter.baseflow.com/permissions/methods");
-        methodChannel.setMethodCallHandler(this);
+    public void setPermissionRegistry(
+        @Nullable PermissionRegistry permissionRegistry) {
+      this.permissionRegistry = permissionRegistry;
     }
 
-    @Override
+  @Override
     public void onMethodCall(@NonNull MethodCall call, @NonNull final Result result)
     {
         switch (call.method) {
@@ -102,8 +110,4 @@ final class MethodCallHandlerImpl implements MethodChannel.MethodCallHandler {
                 break;
         }
     }
-
-    void stopListening() {
-        methodChannel.setMethodCallHandler(null);
-    }
 }

permission_handler/android/src/main/java/com/baseflow/permissionhandler/PermissionHandlerPlugin.java

@@ -2,19 +2,16 @@ package com.baseflow.permissionhandler;
 
 import android.app.Activity;
 import android.content.Context;
-
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-
+import com.baseflow.permissionhandler.PermissionManager.ActivityRegistry;
+import com.baseflow.permissionhandler.PermissionManager.PermissionRegistry;
+import io.flutter.embedding.engine.plugins.FlutterPlugin;
 import io.flutter.embedding.engine.plugins.activity.ActivityAware;
 import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding;
-
 import io.flutter.plugin.common.BinaryMessenger;
+import io.flutter.plugin.common.MethodChannel;
 import io.flutter.plugin.common.PluginRegistry.Registrar;
-import io.flutter.embedding.engine.plugins.FlutterPlugin;
-
-import com.baseflow.permissionhandler.PermissionManager.ActivityRegistry;
-import com.baseflow.permissionhandler.PermissionManager.PermissionRegistry;
 
 /**
  * Platform implementation of the permission_handler Flutter plugin.
@@ -26,8 +23,11 @@ import com.baseflow.permissionhandler.PermissionManager.PermissionRegistry;
  * stable {@code io.flutter.plugin.common} package.
  */
 public final class PermissionHandlerPlugin implements FlutterPlugin, ActivityAware {
-    private @Nullable FlutterPluginBinding flutterPluginBinding;
-    private @Nullable MethodCallHandlerImpl methodCallHandler;
+
+    private MethodChannel methodChannel;
+
+    @Nullable
+    private MethodCallHandlerImpl methodCallHandler;
 
     /**
      * Registers a plugin implementation that uses the stable {@code io.flutter.plugin.common}
@@ -36,44 +36,39 @@ public final class PermissionHandlerPlugin implements FlutterPlugin, ActivityAwa
      * <p>Calling this automatically initializes the plugin. However plugins initialized this way
      * won't react to changes in activity or context, unlike {@link PermissionHandlerPlugin}.
      */
-  public static void registerWith(Registrar registrar) {
-    final PermissionHandlerPlugin permissionHandlerPlugin = new PermissionHandlerPlugin();
-    permissionHandlerPlugin.startListening(
-            registrar.context(),
-            registrar.activity(),
-            registrar.messenger(),
-            registrar::addActivityResultListener,
-            registrar::addRequestPermissionsResultListener
-    );
-  }
+    public static void registerWith(Registrar registrar) {
+        final PermissionHandlerPlugin plugin = new PermissionHandlerPlugin();
+        plugin.startListening(registrar.context(), registrar.messenger());
+
+        if (registrar.activeContext() instanceof Activity) {
+            plugin.startListeningToActivity(
+                registrar.activity(),
+                registrar::addActivityResultListener,
+                registrar::addRequestPermissionsResultListener
+            );
+        }
+    }
 
     @Override
     public void onAttachedToEngine(@NonNull FlutterPluginBinding binding) {
-        this.flutterPluginBinding = binding;
+        startListening(
+            binding.getApplicationContext(),
+            binding.getBinaryMessenger()
+        );
     }
 
     @Override
     public void onDetachedFromEngine(@NonNull FlutterPluginBinding binding) {
-        this.flutterPluginBinding = null;
+        stopListening();
     }
 
     @Override
     public void onAttachedToActivity(@NonNull ActivityPluginBinding binding) {
-        if(flutterPluginBinding == null) {
-            return;
-        }
-
-        startListening(
-                flutterPluginBinding.getApplicationContext(),
-                binding.getActivity(),
-                flutterPluginBinding.getBinaryMessenger(),
-                binding::addActivityResultListener,
-                binding::addRequestPermissionsResultListener);
-    }
-
-    @Override
-    public void onDetachedFromActivityForConfigChanges() {
-        onDetachedFromActivity();
+        startListeningToActivity(
+            binding.getActivity(),
+            binding::addActivityResultListener,
+            binding::addRequestPermissionsResultListener
+        );
     }
 
     @Override
@@ -83,28 +78,53 @@ public final class PermissionHandlerPlugin implements FlutterPlugin, ActivityAwa
 
     @Override
     public void onDetachedFromActivity() {
-        if (methodCallHandler == null) {
-            return;
-        }
+        stopListeningToActivity();
+    }
+
+    @Override
+    public void onDetachedFromActivityForConfigChanges() {
+        onDetachedFromActivity();
+    }
 
-        methodCallHandler.stopListening();
+
+    private void startListening(Context applicationContext, BinaryMessenger messenger) {
+        methodChannel = new MethodChannel(
+            messenger,
+            "flutter.baseflow.com/permissions/methods");
+
+        methodCallHandler = new MethodCallHandlerImpl(
+            applicationContext,
+            new AppSettingsManager(),
+            new PermissionManager(),
+            new ServiceManager()
+        );
+
+        methodChannel.setMethodCallHandler(methodCallHandler);
+    }
+
+    private void stopListening() {
+        methodChannel.setMethodCallHandler(null);
+        methodChannel = null;
         methodCallHandler = null;
     }
 
-    private void startListening(
-            Context applicationContext,
-            Activity activity,
-            BinaryMessenger messenger,
-            ActivityRegistry activityRegistry,
-            PermissionRegistry permissionRegistry) {
-      methodCallHandler = new MethodCallHandlerImpl(
-              applicationContext,
-              activity,
-              messenger,
-              new AppSettingsManager(),
-              new PermissionManager(),
-              new ServiceManager(),
-              activityRegistry,
-              permissionRegistry);
+    private void startListeningToActivity(
+        Activity activity,
+        ActivityRegistry activityRegistry,
+        PermissionRegistry permissionRegistry
+    ) {
+        if (methodCallHandler != null) {
+            methodCallHandler.setActivity(activity);
+            methodCallHandler.setActivityRegistry(activityRegistry);
+            methodCallHandler.setPermissionRegistry(permissionRegistry);
+        }
+    }
+
+    private void stopListeningToActivity() {
+        if (methodCallHandler != null) {
+            methodCallHandler.setActivity(null);
+            methodCallHandler.setActivityRegistry(null);
+            methodCallHandler.setPermissionRegistry(null);
+        }
     }
 }