c# - Xamarin Forms UWP 丢失电话调用管理器程序集

Question

问题

学习 Xamarin 大学类(class) XAM120 。在将我的 IDial 实现添加到我的 UWP 项目时遇到了阻碍。由于某种原因，我的项目没有在我的系统上获取 PhoneCallManager API。

错误:

Error CS1069
The type name 'PhoneCallManager' could not be found in the namespace 'Windows.ApplicationModel.Calls'. This type has been forwarded to assembly 'Windows.Foundation.UniversalApiContract, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null, ContentType=WindowsRuntime' Consider adding a reference to that assembly.

代码:

using System.Threading.Tasks;
using Windows.Foundation.Metadata;
using Phoneword.UWP;
using Xamarin.Forms;

namespace Phoneword.UWP
{
    public class PhoneDialer : IDialer
    {
        public Task<bool> DialAsync(string phoneNumber)
        {
            if (ApiInformation.IsApiContractPresent("Windows.ApplicationModel.Calls.CallsPhoneContract", 1, 0))
            {
                Windows.ApplicationModel.Calls.PhoneCallManager.ShowPhoneCallUI(phoneNumber, "Phoneword");
                return Task.FromResult(true);
            }

            return Task.FromResult(false);
        }
    }
}

Answer 1

将以下引用添加到您的 UWP 项目: