Flutter AndroidManifest.xml 错误：找不到包标识符或启动活动-解网

问：

我正在开发一个适用于 Android 的 Flutter 项目，遇到了与 AndroidManifest.xml 文件相关的错误。尝试运行我的项目时，我收到以下错误消息：

package identifier or launch activity not found. Please check /Users/[user]/AndroidStudioProjects/[project]/android/app/src/main/AndroidManifest.xml for errors.
No application found for TargetPlatform.android_arm64.
Is your project missing an android/app/src/main/AndroidManifest.xml? Consider running "flutter create ." to create one.

我已经检查了我的AndroidManifest .xml，它似乎是正确的。即使确保正确设置了包名称和目标平台，该错误仍然存在。

有人可以提供有关如何解决此问题的指导吗？是什么原因导致了此错误，我应该采取哪些步骤来排除故障并修复它？

AndroidManifest.xml:

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

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission
        android:name="android.permission.WRITE_EXTERNAL_STORAGE"
        android:maxSdkVersion="32"
        tools:ignore="ScopedStorage" />
    <uses-permission
        android:name="android.permission.READ_EXTERNAL_STORAGE"
        android:maxSdkVersion="32" />

    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO" />

    <uses-permission android:name="android.permission.USE_BIOMETRIC" />
    <uses-permission android:name="com.google.android.gms.permission.AD_ID" />

    <application
        android:name="androidx.multidex.MultiDexApplication"
        android:allowBackup="false"
        android:fullBackupContent="false"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:manageSpaceActivity=".MainActivity"
        android:requestLegacyExternalStorage="true"
        android:usesCleartextTraffic="true"
        tools:replace="android:label"
        tools:targetApi="34">

        <meta-data
            android:name="com.google.android.gms.ads.APPLICATION_ID"
            android:value="ca-app-pub-xxxxxxxxxxxx~xxxxxxxxxx"/>

        <activity
            android:name=".MainActivity"
            android:theme="@style/LaunchTheme" />

        <activity-alias
            android:name="OneLauncherAlias"
            android:enabled="true"
            android:exported="true"
            android:icon="@mipmap/ic_launcher"
            android:label="@string/app_name"
            android:targetActivity=".MainActivity"
            android:theme="@style/LaunchTheme">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity-alias>

        <activity-alias
            android:name="TwoLauncherAlias"
            android:enabled="false"
            android:exported="true"
            android:icon="@mipmap/calculator"
            android:label="@string/app_name_fake"
            android:targetActivity=".MainActivity"
            android:theme="@style/LaunchTheme">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity-alias>
        <!-- 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>

其他信息：

Flutter 版本：和 Dart 版本：3.13.53.1.2

Android Flutter Dart 错误处理清单

<activity
    android:name=".MainActivity"
    android:theme="@style/LaunchTheme" 
    android:exported="true"
    >
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

<activity-alias
    android:name="OneLauncherAlias"
    android:enabled="true"
    android:exported="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:targetActivity=".MainActivity"
    android:theme="@style/LaunchTheme" />

<activity-alias
    android:name="TwoLauncherAlias"
    android:enabled="false"
    android:exported="true"
    android:icon="@mipmap/calculator"
    android:label="@string/app_name_fake"
    android:targetActivity=".MainActivity"
    android:theme="@style/LaunchTheme" />

           <manifest xmlns:android="http://schemas.android.com/apk/res/android"
            package="com.webjow.hidden_gallery"
            xmlns:tools="http://schemas.android.com/tools">
            
            <!-- Your permissions, application, and meta-data here -->

            <application
                android:name="androidx.multidex.MultiDexApplication"
                android:allowBackup="false"
                android:fullBackupContent="false"
                android:icon="@mipmap/ic_launcher"
                android:label="@string/app_name"
                android:manageSpaceActivity=".MainActivity"
                android:requestLegacyExternalStorage="true"
                android:usesCleartextTraffic="true"
                tools:replace="android:label"
                tools:targetApi="34">
            
                <!-- Your activities and other components here -->

                <meta-data
                    android:name="flutterEmbedding"
                    android:value="2" />
            </application>
        </manifest>

1赞 Abdul Ahad 10/19/2023 #3

您似乎添加了多个针对您的 Main Activity 标签的别名。

它可以通过删除两个别名来简单地解决。

在主活动代码中添加 intent 过滤器代码，并添加 exported true 标志。这将解决问题。

<activity
        android:name=".MainActivity"
        android:theme="@style/LaunchTheme">
   <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" /> 
   </intent-filter>
</activity>

Flutter AndroidManifest.xml 错误：找不到包标识符或启动活动

Flutter AndroidManifest.xml Error: package identifier or launch activity not found

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