flutter just_audio_background 错误：任务':app:processDebugMainManifest'执行失败

Question

我试图设置just_audio_background，但当我按照 main/AndroidManifest.xml 的修改进行操作时，出现了一堆错误（如屏幕截图所示），并且不确定为什么似乎完全按照插件概述的步骤进行操作。

我收到的警告是：

运行应用程序时出现的异常原因是：

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugMainManifest'.
> com.android.manifmerger.ManifestMerger2$MergeFailureException: Error parsing /Users/mac/Documents/flutter_projects/zense_timer_project/zense_timer/android/app/src/main/AndroidManifest.xml

这是 AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    <uses-permission android:name="android.permission.WAKE_LOCK"/>
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
    <application
        android:label="zense_timer"
        android:name="${applicationName}"
        android:icon="@mipmap/ic_launcher">
        <activity
            android:name="com.ryanheise.audioservice.AudioServiceActivity"
            android:exported="true"
            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">
            <!-- Specifies an Android theme to apply to this Activity as soon as
                 the Android process has started. This theme is visible to the user
                 while the Flutter UI initializes. After that, this theme continues
                 to determine the Window background behind the Flutter UI. -->
            <meta-data
              android:name="io.flutter.embedding.android.NormalTheme"
              android:resource="@style/NormalTheme"
              />
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
        <!-- Don't delete the meta-data below.
             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->

        <service android:name="com.ryanheise.audioservice.AudioService"
            android:foregroundServiceType="mediaPlayback"
            android:exported="true" tools:ignore="Instantiatable">
            <intent-filter>
                <action android:name="android.media.browse.MediaBrowserService" />
            </intent-filter>
        </service>

        <!-- ADD THIS "RECEIVER" element -->
        <receiver android:name="com.ryanheise.audioservice.MediaButtonReceiver"
            android:exported="true" tools:ignore="Instantiatable">
            <intent-filter>
                <action android:name="android.intent.action.MEDIA_BUTTON" />
            </intent-filter>
        </receiver>
        <meta-data
            android:name="flutterEmbedding"
            android:value="2" />
        <!-- ADD THIS "SERVICE" element -->

    </application>
</manifest>

我已经运行 flutter clean 并重新启动，但仍然无法修复这些错误。

注意可能相关，在我对 just_audio_background 进行修改之前，我的 AndroidManifest 确实有这些警告，但我的应用程序仍然可以正常编译，并且从我读到的内容可能与 IDE 中的错误有关。

Unresolved class '{applicationName}'
Unresolved class '{applicationName}'
Cannot resolve symbol '@style/NormalTheme'

Answer 1

在您的 AndroidManifest 文件中，

更改此：

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

对此：

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

Answer 2

仔细阅读文档并按照步骤在 android/app/src/main/AndroidManifest.xml 中编辑 AndroidManifest.xml 文件

我的文件：

<manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools">
<application
    android:label="learn_english"
    android:name="${applicationName}"
    android:icon="@mipmap/ic_launcher"
    android:usesCleartextTraffic="true"
    android:requestLegacyExternalStorage="true">

    <activity
        android:name="com.ryanheise.audioservice.AudioServiceActivity"
        android:exported="true"
        android:launchMode="singleInstance"
        android:theme="@style/LaunchTheme"
        android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
        android:hardwareAccelerated="true"
        android:windowSoftInputMode="adjustResize"
        >
        <!-- Specifies an Android theme to apply to this Activity as soon as
             the Android process has started. This theme is visible to the user
             while the Flutter UI initializes. After that, this theme continues
             to determine the Window background behind the Flutter UI. -->
        <meta-data
          android:name="io.flutter.embedding.android.NormalTheme"
          android:resource="@style/NormalTheme"
          />
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>

    <!-- 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" />

    <service android:name="com.ryanheise.audioservice.AudioService"
        android:foregroundServiceType="mediaPlayback"
        android:exported="true" tools:ignore="Instantiatable">
        <intent-filter>
            <action android:name="android.media.browse.MediaBrowserService" />
        </intent-filter>
    </service>

    <receiver android:name="com.ryanheise.audioservice.MediaButtonReceiver"
        android:exported="true" tools:ignore="Instantiatable">
        <intent-filter>
            <action android:name="android.intent.action.MEDIA_BUTTON" />
        </intent-filter>
    </receiver>

</application>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" tools:ignore="ScopedStorage"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS"/>