更新代码

app/src/main/AndroidManifest.xml

@@ -4,6 +4,7 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
@@ -17,6 +18,19 @@
         tools:targetApi="31">
         <meta-data android:name="com.google.android.geo.API_KEY"
             android:value="AIzaSyBM9xMcybq9IbFSFVneZ4nAqQ0ZmTnHGO4"/>
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_icon"
+            android:resource="@drawable/googleg_standard_color_18" />
+        <!-- Set color used with incoming notification messages. This is used when no color is set for the incoming
+             notification message. See README(https://goo.gl/6BKBk7) for more. -->
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_color"
+            android:resource="@color/black" />
+        <!-- [END fcm_default_icon] -->
+        <!-- [START fcm_default_channel] -->
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_channel_id"
+            android:value="Default Message" />
         <activity
             android:name=".MainActivity"
             android:exported="true"
@@ -28,6 +42,13 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <service
+            android:name=".MyFirebaseMessagingService"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.google.firebase.MESSAGING_EVENT" />
+            </intent-filter>
+        </service>
     </application>
 
 </manifest>