Xamarin.android MvvmCross的SupportMapFragment问题

我试图通过将Monodroid Maps和LocationDemo_v2与NPlus1DaysOfMvvmCross的N=26 Fraggle演示结合起来，将Google Maps v2添加到Mvx项目中

我已将Google Play服务添加到地图演示中，并使用以下工具成功显示地图：

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    class="com.google.android.gms.maps.SupportMapFragment" />

Mvx版本的视图为：

using Android.App;
using Android.OS;
using Cirrious.MvvmCross.Droid.Fragging;
using Rock.Core.ViewModels;

namespace Rock.Droid.Views
{
    [Activity(Label = "View for FirstViewModel")]
    public class FirstView : MvxFragmentActivity
    {
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);
            SetContentView(Resource.Layout.FirstView);
        }
    }
}

---

我还试着从工作演示中引用Google Play services dll，得到了相同的结果。

啊。这是AndroidManifest.xml文件中的一个错误。Maps API密钥需要位于应用程序节点内部。如果不存在，则会导致异常

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.demo.app" android:installLocation="auto" android:versionCode="1" android:versionName="1">
  <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" />
  <application android:label="Demo">
    <meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="AAAAAAAAAAAAAAAAA-xxxxxxxxxxxxxxxxxxxxxx" />
  </application>
  <uses-feature android:glEsVersion="0x00020000" android:required="true" />
  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
  <uses-permission android:name="com.demo.app.permission.MAPS_RECEIVE" />
  <permission android:name="com.demo.app.permission.MAPS_RECEIVE" android:protectionLevel="signature" />
</manifest>

您是否已将fraggle演示应用程序的详细信息添加到api控制台中的“地图”api键中？我采用了另一种方法，更改了fraggle应用程序的详细信息以匹配api键，但这应该具有相同的效果。

using Android.App;
using Android.OS;
using Cirrious.MvvmCross.Droid.Fragging;
using Rock.Core.ViewModels;

namespace Rock.Droid.Views
{
    [Activity(Label = "View for FirstViewModel")]
    public class FirstView : MvxFragmentActivity
    {
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);
            SetContentView(Resource.Layout.FirstView);
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.demo.app" android:installLocation="auto" android:versionCode="1" android:versionName="1">
  <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" />
  <application android:label="Demo">
    <meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="AAAAAAAAAAAAAAAAA-xxxxxxxxxxxxxxxxxxxxxx" />
  </application>
  <uses-feature android:glEsVersion="0x00020000" android:required="true" />
  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
  <uses-permission android:name="com.demo.app.permission.MAPS_RECEIVE" />
  <permission android:name="com.demo.app.permission.MAPS_RECEIVE" android:protectionLevel="signature" />
</manifest>