如何让 google 地图在 flutter 中工作？

Question

我已按照软件包开发页面上的步骤进行操作：https://pub.dev/packages/google_maps_flutter 但是当我运行输入我的 api 键后，我得到的只是一个空白屏幕，如下所示：
Screenshot

AndroidManifest.xml 看起来像这样：

<application
        android:name="io.flutter.app.FlutterApplication"
        android:label="foodiesapp"
        android:icon="@mipmap/ic_launcher">   
        <activity
            android:name=".MainActivity"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize">
            <!-- This keeps the window background of the activity showing
                 until Flutter renders its first frame. It can be removed if
                 there is no splash screen (such as the default splash screen
                 defined in @style/LaunchTheme). -->
            <meta-data
                android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
                android:value="true" />
            <meta-data android:name="com.google.android.geo.API_KEY"
               android:value="AIzaSyB........"/>
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
    </application>

主页是包开发页面示例中的确切代码：https://pub.dev/packages/google_maps_flutter

有人知道问题出在哪里吗？

Answer 1

将 API_KEY 元数据移动到主要 activity 之上。

<application
        android:name="io.flutter.app.FlutterApplication"
        android:label="foodiesapp"
        android:icon="@mipmap/ic_launcher">
        <meta-data android:name="com.google.android.geo.API_KEY"
               android:value="AIzaSyB........"/> <!--here-->
        <activity
            android:name=".MainActivity"
            android:launchMode="singleTop"

如何让 google 地图在 flutter 中工作？

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