android: 需要为元素 <service#io.intercom.android.sdk.fcm.IntercomFcmMessengerService> 显式指定导出

Question

我在 AndroidManifest.xml 中遇到 Flutter 构建错误

android:exported 需要为元素 <service#io.intercom.android.sdk.fcm.IntercomFcmMessengerService> 显式指定。android:exported当相应组件定义了意图过滤器时，面向 Android 12 及更高版本的应用需要指定显式值

AndroidManifest.xml 文件中没有名为 intercom 的元素。我还在活动“.MainActivity”中添加了 android:exported="true" 但错误仍然存​​在。

我的AndoidManifest.xml文件如下

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

    <!-- The INTERNET permission is required for development. Specifically,
         flutter needs it to communicate with the running application
         to allow setting breakpoints, to provide hot reload, etc.
    -->
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.CAMERA"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

    <uses-feature
            android:name="android.hardware.camera"
            android:required="false"/>
    <uses-feature
            android:name="android.hardware.camera.autofocus"
            android:required="false" />

    <queries>
        <intent>
            <action android:name="android.intent.action.VIEW" />
            <category android:name="android.intent.category.BROWSABLE" />
            <data android:scheme="https"/>

        </intent>
        <intent>
            <action android:name="com.google.android.youtube.api.service.START" />
        </intent>
    </queries>

    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
         calls FlutterMain.startInitialization(this); in its onCreate method.
         In most cases you can leave this as-is, but you if you want to provide
         additional functionality it is fine to subclass or reimplement
         FlutterApplication and put your custom class here. -->
    <application
            android:requestLegacyExternalStorage="true"
            android:label="myproject"
            android:icon="@mipmap/ic_launcher"
            android:usesCleartextTraffic="true"
        >
        <meta-data
                android:name="flutterEmbedding"
                android:value="2" />
        <activity
                android:name=".MainActivity"
                android:launchMode="singleTop"
                android:theme="@style/LaunchTheme"
                android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
                android:hardwareAccelerated="true"
                android:exported="true"
                android:windowSoftInputMode="adjustResize">
            <!-- Specify that the launch screen should continue being displayed -->
            <!-- until Flutter renders its first frame. -->
            <meta-data
                    android:name="io.flutter.embedding.android.SplashScreenDrawable"
                    android:resource="@drawable/launch_background" />

            <!-- Theme to apply as soon as Flutter begins rendering frames -->
            <meta-data
                    android:name="io.flutter.embedding.android.NormalTheme"
                    android:resource="@style/NormalTheme"
            />
            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.VIEW"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <category android:name="android.intent.category.BROWSABLE"/>
                <data
                        android:scheme="https"
                        android:host="www.myproject.social"
                        android:pathPrefix="/api/auth/"/>
            </intent-filter>
            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.VIEW"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <category android:name="android.intent.category.BROWSABLE"/>
                <data
                        android:scheme="https"
                        android:host="www.myproject.io"
                        android:pathPrefix="/api/auth/"/>
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.SEND"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <data android:mimeType="image/*"/>
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.SEND"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <data android:mimeType="text/*"/>
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.SEND"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <data android:mimeType="video/*"/>
            </intent-filter>
        </activity>
        <activity
                android:name="com.yalantis.ucrop.UCropActivity"
                android:screenOrientation="portrait"
                android:theme="@style/Theme.AppCompat.Light.NoActionBar"/>
    </application>
</manifest>

详细的错误跟踪：

 See http://g.co/androidstudio/manifest-merger for more information about the manifest merger.
[   +1 ms] E:\App Development\MyApp - Changes\android\app\src\main\AndroidManifest.xml:11:9-16:19 Error:
[        ]      android:exported needs to be explicitly specified for element <service#io.intercom.android.sdk.fcm.IntercomFcmMessengerService>. Apps targeting Android 12 and higher are required to specify an
explicit value for `android:exported` when the corresponding component has an intent filter defined



The error trace points to the following lines : 

 <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.CAMERA"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

    <uses-feature
            android:name="android.hardware.camera"
            android:required="true"/>
    <uses-feature
            android:name="android.hardware.camera.autofocus"
            android:required="false"/>

编辑：将对讲版本更新为 7.2.0。我现在收到以下错误

错误：无法使用静态访问来访问实例成员“initialize”。（static_access_to_instance_member 位于 lib\services\intercom.dart:27）

跟踪指向这一行：

等待 Intercom.initialize(appId, iosApiKey: iosApiKey, androidApiKey: androidApiKey);

我的对讲机.dart

import 'dart:convert';

import 'package:myproject/models/user.dart';
import 'package:myproject/services/user.dart';
import 'package:crypto/crypto.dart';
import 'package:meta/meta.dart';
import 'package:intercom_flutter/intercom_flutter.dart';

class IntercomService {
  late UserService _userService;

  late String iosApiKey;
  late String androidApiKey;
  late String appId;

  void setUserService(UserService userService) {
    _userService = userService;
  }

  void bootstrap(
      {required String iosApiKey,
      required String androidApiKey,
      required String appId}) async {
    this.iosApiKey = iosApiKey;
    this.androidApiKey = androidApiKey;
    this.appId = appId;
    await Intercom.initialize(appId,
        iosApiKey: iosApiKey, androidApiKey: androidApiKey);
  }

  Future displayMessenger() {
    return Intercom.displayMessenger();
  }

  Future enableIntercom() async {
    await disableIntercom();
    User? loggedInUser = _userService.getLoggedInUser();
    if (loggedInUser == null) throw 'Cannot enable intercom. Not logged in.';

    assert(loggedInUser.uuid != null && loggedInUser.id != null);

    String userId = _makeUserId(loggedInUser);
    return Intercom.registerIdentifiedUser(userId: userId);
  }

  Future disableIntercom() {
    return Intercom.logout();
  }

  String _makeUserId(User user) {
    var bytes = utf8.encode(user.uuid! + user.id.toString());
    var digest = sha256.convert(bytes);
    return digest.toString();
  }
}

Answer 1

即使我们添加 android 导出，有时也会发生这种情况。解决方法是在 android->app->build.gradle 文件中将 targetSdkVersion 设置为 31，将compileSDKVersion 设置为 31