Fix ios

Author: HashirRajah

src/ios/AppDelegate+FirebaseMessagingPlugin.m

@@ -2,6 +2,8 @@
 #import "FirebaseMessagingPlugin.h"
 #import <objc/runtime.h>
 
+@import FirebaseCore;
+
 @implementation AppDelegate (FirebaseMessagingPlugin)
 
 // Borrowed from http://nshipster.com/method-swizzling/
@@ -36,8 +38,21 @@ + (void)load {
 - (BOOL)identity_application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
     // always call original method implementation first
     BOOL handled = [self identity_application:application didFinishLaunchingWithOptions:launchOptions];
+    if(![FIRApp defaultApp]) {
+        [FIRApp configure];
+    }
 
+    [FIRMessaging messaging].delegate = self;
     [UNUserNotificationCenter currentNotificationCenter].delegate = self;
+    UNAuthorizationOptions authOptions = UNAuthorizationOptionAlert |
+        UNAuthorizationOptionSound | UNAuthorizationOptionBadge;
+    [[UNUserNotificationCenter currentNotificationCenter]
+        requestAuthorizationWithOptions:authOptions
+        completionHandler:^(BOOL granted, NSError * _Nullable error) {
+          // ...
+        }];
+
+    [application registerForRemoteNotifications];
 
 //    if (launchOptions) {
 //        NSDictionary *userInfo = launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey];

src/ios/FirebaseMessagingPlugin.m

@@ -9,10 +9,6 @@ @implementation FirebaseMessagingPlugin
 
 - (void)pluginInitialize {
     NSLog(@"Starting Firebase Messaging plugin");
-
-    if(![FIRApp defaultApp]) {
-        [FIRApp configure];
-    }
 }
 
 - (void)requestPermission:(CDVInvokedUrlCommand *)command {