在app的build.gradle文件中加入以下代码解决该问题：

android {
    ...
    // Change file type of bundled pattern to APK
    packagingOptions {
        pickFirst 'META-INF/plex.properties'
        pickFirst '**/*.so'
        pickFirst '**/*.jar'
        pickFirst 'lib/**/*'
        pickFirst 'assets/**/*'
        pickFirst 'res/**/*'
        pickFirst 'resources.arsc'
        pickFirst 'AndroidManifest.xml'
        pickFirst 'app.apk'

        // Override bundled plugin file type
        exclude 'META-INF/plex.properties'
        exclude '**/*.so'
        exclude '**/*.jar'
        exclude 'lib/**/*'
        exclude 'assets/**/*'
        exclude 'res/**/*'
        exclude 'resources.arsc'
        exclude 'AndroidManifest.xml'
        include('*.apk') {
            // Set file type to APK
            from { null }
            into 'APK'
            include '*.apk'
        }
    }
}

该方法将“*.apk”文件匹配模式的文件类型从“bundled”更改为“APK”。