android - flutter 的 FCM 通知声音在发布中不起作用

Question

最近几天我一直在为此苦苦挣扎。我有 flutter 的应用程序，应该接收来自 firebase 的通知(使用 FCM)并播放自定义声音。如果我使用 flutter run 运行应用程序，这可以正常工作或使用 flutter run --release ，但是如果我使用 flutter build apk --release 构建应用程序并在我的手机上手动安装它我仍然收到通知但声音丢失，它甚至不会播放默认通知声音。
我检查了我的声音是否打开，以及应用设置中的通知 channel 是否正确。
main.dart

void main() async {
  // needed if you intend to initialize in the `main` function
  WidgetsFlutterBinding.ensureInitialized();

  fcm.getToken().then((value) {
    print("TOKEN:" + value);
  });

  fcm.configure(
    onResume: (Map<String, dynamic> message) async {},
    onLaunch: (Map<String, dynamic> message) async {},
    onMessage: (Map<String, dynamic> message) async {
       AudioCache _audioCache = AudioCache(
          prefix: "sounds/",
          fixedPlayer: AudioPlayer()..setReleaseMode(ReleaseMode.STOP));

      _audioCache.play('merchant_notify.mp3');
    },
  );

  runApp(MyApp());
}

安卓/build.gradle

buildscript {
    ext.kotlin_version = '1.3.50'
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.google.gms:google-services:4.3.2'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
   
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

android/app/build.gradle

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
apply plugin: 'com.google.gms.google-services'

android {
    compileSdkVersion 28

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        applicationId "" 
        minSdkVersion 21
        targetSdkVersion 28
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"    
   
}

androidmanifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
    package="">

    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.VIBRATE"/>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
    <application
        android:name="io.flutter.app.FlutterApplication"
        android:label=""
        android:icon="@mipmap/launcher_icon">
        <activity
           android:name=".MainActivity"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize"
            android:showWhenLocked="true"
            android:turnScreenOn="true">

            <meta-data
              android:name="io.flutter.embedding.android.NormalTheme"
              android:resource="@style/NormalTheme"
              />

            <meta-data
              android:name="io.flutter.embedding.android.SplashScreenDrawable"
              android:resource="@drawable/launch_background"
              />
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>

            <intent-filter>
                <action android:name="FLUTTER_NOTIFICATION_CLICK"/>
                <category android:name="android.intent.category.DEFAULT"/>
            </intent-filter> 
        </activity>
       
        <receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED"/>
                <action android:name="android.intent.action.MY_PACKAGE_REPLACED"/>
                <action android:name="android.intent.action.QUICKBOOT_POWERON" />
                <action android:name="com.htc.intent.action.QUICKBOOT_POWERON"/>
            </intent-filter>
        </receiver>

       
        <!-- Don't delete the meta-data below.
             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
       <meta-data
            android:name="flutterEmbedding"
            android:value="2" /> 
    </application>
</manifest>

MainActivity.kt

package com.example.merchant_delivery

import io.flutter.embedding.android.FlutterActivity



class MainActivity: FlutterActivity()  { 
}

res\raw\sound.mp3 中还有声音文件
这是我发送到 firebase FCM 的 json:

{
    "registration_ids": [
       
    ],
      "notification": {
        "title": "Test notification",
        "body": "Body test",
        "android_channel_id": "channel_name",
        "channel_id": "channel_name",
        "sound": "sound",
        "priority":"high"
    }
}

Answer 1

在你的 MainActivity.java 中试试这个

    import io.flutter.embedding.android.FlutterActivity;   
    import android.app.NotificationChannel;  
    import android.app.NotificationManager;  
    import android.media.AudioAttributes;  
    import android.net.Uri;  
    import android.os.Build;   
    import android.os.Bundle;   
    public class MainActivity extends FlutterActivity {  
@Override  
 protected void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);   
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {  
  Uri soundUri=Uri.parse("android.resource://"+getApplicationContext()   
.getPackageName() + "/" +  R.raw.[soundName without extension]);  
AudioAttributes audioAttributes = new AudioAttributes.Builder()   
                .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)    
                .setUsage(AudioAttributes.USAGE_ALARM)   
                .build();   

        // Creating Channel   
        NotificationChannel channel = new NotificationChannel([ChannelId],[ChannelName], NotificationManager.IMPORTANCE_HIGH);
        channel.setSound(soundUri, audioAttributes);

        NotificationManager notificationManager = getSystemService(NotificationManager.class);
        notificationManager.createNotificationChannel(channel);
    }
   // GeneratedPluginRegistrant.registerWith(this);
}

}