[firebase_analytics] Add resetAnalyticsData method

AUTHORS

@@ -25,3 +25,4 @@ Tuyển Vũ Xuân <netsoft1985@gmail.com>
 Sarthak Verma <sarthak@artiosys.com>
 Mike Diarmid <mike@invertase.io>
 Invertase <oss@invertase.io>
+Elliot Hesp <elliot@invertase.io>

packages/firebase_analytics/android/src/main/java/io/flutter/plugins/firebaseanalytics/FirebaseAnalyticsPlugin.java

@@ -56,6 +56,9 @@ public void onMethodCall(MethodCall call, Result result) {
       case "setUserProperty":
         handleSetUserProperty(call, result);
         break;
+      case "resetAnalyticsData":
+        handleResetAnalyticsData(call, result);
+        break;
       default:
         result.notImplemented();
         break;
@@ -123,6 +126,11 @@ private void handleSetUserProperty(MethodCall call, Result result) {
     result.success(null);
   }
 
+  private void handleResetAnalyticsData(MethodCall call, Result result) {
+    firebaseAnalytics.resetAnalyticsData();
+    result.success(null);
+  }
+
   private static Bundle createBundleFromMap(Map<String, Object> map) {
     if (map == null) {
       return null;

packages/firebase_analytics/ios/Classes/FirebaseAnalyticsPlugin.m

@@ -59,6 +59,9 @@ - (void)handleMethodCall:(FlutterMethodCall *)call result:(FlutterResult)result
     NSNumber *enabled = [NSNumber numberWithBool:call.arguments];
     [[FIRAnalyticsConfiguration sharedInstance] setAnalyticsCollectionEnabled:[enabled boolValue]];
     result(nil);
+  } else if ([@"resetAnalyticsData" isEqualToString:call.method]) {
+    [FIRAnalytics resetAnalyticsData];
+    result(nil);
   } else {
     result(FlutterMethodNotImplemented);
   }

packages/firebase_analytics/lib/firebase_analytics.dart

@@ -160,6 +160,14 @@ class FirebaseAnalytics {
     });
   }
 
+  /// Clears all analytics data for this app from the device and resets the app instance id.
+  Future<void> resetAnalyticsData() async {
+    // TODO(amirh): remove this on when the invokeMethod update makes it to stable Flutter.
+    // https://github.com/flutter/flutter/issues/26431
+    // ignore: strong_mode_implicit_dynamic_method
+    await _channel.invokeMethod('resetAnalyticsData');
+  }
+
   /// Logs the standard `add_payment_info` event.
   ///
   /// This event signifies that a user has submitted their payment information

packages/firebase_analytics/test/firebase_analytics_test.dart

@@ -114,6 +114,11 @@ void main() {
       expect(invokedMethod, 'setSessionTimeoutDuration');
       expect(arguments, 234);
     });
+
+    test('resetAnalyticsData', () async {
+      await analytics.resetAnalyticsData();
+      expect(invokedMethod, 'resetAnalyticsData');
+    });
   });
 
   group('$FirebaseAnalytics analytics events', () {