android - flutter Unresolved 类 'ApplicationName'

Question

我想将我的应用程序上传到 git，它给出了一个警告，当我说显示警告时，我得到了这样的错误。我刚刚打开android文件夹并同步，但我无法得到结果。只有在尝试将我的项目上传到 git 时才会出现此问题。我尝试了很多方法但都失败了我该如何解决这个问题？

    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.apmatik"
    tools:ignore="MissingVersion">
   <application
        android:label="apmatik"
        android:name="${applicationName}"
        android:icon="@mipmap/ic_launcher">
        <activity
            android:name=".MainActivity"
            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="flutterEmbedding"
                android:value="2"
                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" />
    </application>
</manifest>

Answer 1

解决方案一:

在我们的 app/build.gradle 中手动设置 manifestPlaceholders:

android {
⋮
defaultConfig {
   ⋮
    // Add This line
    manifestPlaceholders = [applicationName: "android.app.Application"]
   }
   ⋮
 }

解决方案 2:在 app/build.gradle 中添加此代码:

    buildTypes {
    release {
        manifestPlaceholders = [applicationName: "android.app.Application"]
    }

    debug {
        manifestPlaceholders = [applicationName: "android.app.Application"]
    }
    build{
        manifestPlaceholders = [applicationName: "android.app.Application"]
    }
  }