update example

Examples/simple-fcm-client/app/FirebaseClient.js

 import FirebaseConstants from "./FirebaseConstants";
-import { Platform } from "react-native";
+import { Platform, Alert } from "react-native";
 
 const API_URL = "https://fcm.googleapis.com/fcm/send";
 
@@ -17,8 +17,7 @@ class FirebaseClient {
       "notification":{
     		"title": "Simple FCM Client",
     		"body": "This is a notification with only NOTIFICATION.",
-    		"sound": "default",
-    		"click_action": "fcm.ACTION.HELLO"
+    		"sound": "default"
     	},
     	"priority": 10
     }
@@ -47,9 +46,7 @@ class FirebaseClient {
       "data":{
     		"title": "Simple FCM Client",
     		"body": "This is a notification with only DATA.",
-    		"sound": "default",
-    		"click_action": "fcm.ACTION.HELLO",
-    		"remote": true
+    		"sound": "default"
     	},
     	"priority": "normal"
     }
@@ -63,14 +60,10 @@ class FirebaseClient {
       "notification":{
     		"title": "Simple FCM Client",
     		"body": "This is a notification with NOTIFICATION and DATA (NOTIF).",
-    		"sound": "default",
-    		"click_action": "fcm.ACTION.HELLO"
+				"sound": "default"
     	},
     	"data":{
-    		"title": "Simple FCM Client",
-    		"body": "This is a notification with NOTIFICATION and DATA (DATA)",
-    		"click_action": "fcm.ACTION.HELLO",
-    		"remote": true
+    		"hello": "there"
     	},
     	"priority": "high"
     }
@@ -78,16 +71,25 @@ class FirebaseClient {
     this._send(JSON.stringify(body), "notification-data");
   }
 
-  _send(body, type) {
+  async _send(body, type) {
+		if(FirebaseClient.KEY === 'YOUR_API_KEY'){
+			Alert.alert('Set your API_KEY in app/FirebaseConstants.js')
+			return;
+		}
   	let headers = new Headers({
   		"Content-Type": "application/json",
-  		"Content-Length": parseInt(body.length),
       "Authorization": "key=" + FirebaseConstants.KEY
   	});
 
-  	fetch(API_URL, { method: "POST", headers, body })
-  		.then(response => console.log("Send " + type + " response", response))
-  		.catch(error => console.log("Error sending " + type, error));
+		try {
+			let response = await fetch(API_URL, { method: "POST", headers, body });
+			response = await response.json();
+			if(!response.success){
+				Alert.alert('Failed to send notification, check error log')
+			}
+		} catch (err) {
+			Alert.alert(err && err.message)
+		}
   }
 
 }

Examples/simple-fcm-client/ios/SimpleFcmClient.xcodeproj/project.pbxproj

@@ -422,6 +422,14 @@
 			name = Products;
 			sourceTree = "<group>";
 		};
+		3AF0A6071F7BE4DC004B899F /* Recovered References */ = {
+			isa = PBXGroup;
+			children = (
+				692E216422234A4CB6A7A838 /* libRNFIRMessaging.a */,
+			);
+			name = "Recovered References";
+			sourceTree = "<group>";
+		};
 		4339BFC21DAEBA3900F53B62 /* Products */ = {
 			isa = PBXGroup;
 			children = (
@@ -497,6 +505,7 @@
 				00E356EF1AD99517003FC87E /* SimpleFcmClientTests */,
 				83CBBA001A601CBA00E9B192 /* Products */,
 				7E63D0154B6803F90ADF7C78 /* Pods */,
+				3AF0A6071F7BE4DC004B899F /* Recovered References */,
 			);
 			indentWidth = 2;
 			sourceTree = "<group>";

Examples/simple-fcm-client/ios/SimpleFcmClient/AppDelegate.m

@@ -45,7 +45,7 @@
   [RNFIRMessaging willPresentNotification:notification withCompletionHandler:completionHandler];
 }
 
-- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)())completionHandler
+- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)(void))completionHandler
 {
   [RNFIRMessaging didReceiveNotificationResponse:response withCompletionHandler:completionHandler];
 }