Question

我是Xamarin的新手。我有一个Xamarin Forms App，它需要实现ios和android的电话服务。

这是我在.net共享项目下的界面：

using System;
using System.Collections.Generic;
using System.Text;

namespace CallMeMaybe.Services
{
   public interface ICallService
  {
     void MakePhoneCall(string number);
  }
}

这是视图模型中的命令方法：

   private void OnCall(object s)
    {
        DependencyService.Get<ICallService>().MakePhoneCall(Convert.ToString(s));
    }

这是我的Android呼叫服务，需要实现MakePhoneCall方法

using Android.App;
using Android.Content;
using CallMeMaybe.Droid.Services;
using CallMeMaybe.Services;
using Xamarin.Forms;

[assembly: Dependency(typeof(CallService))]
namespace CallMeMaybe.Droid.Services
{
    [Activity(Label = "CallService")]
    public class CallService : ICallService
    {

        public void MakePhoneCall(string number)
        {

            var uri = Android.Net.Uri.Parse("tel:" + number);
            var intent = new Intent(Intent.ActionCall, uri);
            //Start Activity here?

        }
    }
}

如何在Android方法中启动拨号活动？这是服务类，而不是活动类，因此我不会扩展活动。

Answer 1

首先，该课程不是活动课程，因此您需要删除def create(conn, %{"company" => company_params}) do case Company.insert(conn.assigns.current_user, company_params) do {:ok, _company} -> redirect(conn, to: company_path(conn, :index)) {:error, changeset} -> render(conn, "new.html", changeset: changeset) end end def update(conn, %{"id" => company_id, "company" => company_params}) do company = Company.get(company_id) case Company.update(company, company_params) do {:ok, _company} -> redirect(conn, to: company_path(conn, :show, company)) {:error, changeset} -> render(conn, "edit.html", company: company, changeset: changeset) end end

[Activity(Label = "CallService")]

此意图将打开通话应用并开始通话

通过执行public void MakePhoneCall(string number) { var intent = new Intent(Intent.ActionCall, Android.Net.Uri.Parse( "tel:" + Uri.EscapeDataString(phoneNumber))); Android.App.Application.Context.StartActivity(intent); }，您命令Android打开“呼叫应用活动”并开始呼叫

Answer 2

现在可以正常工作。使用应用程序上下文开始活动

ERROR in src/app/web-to-backend-interface.service.ts(80,71): error TS2345: Argument of type '{ headers: HttpHeaders; withCredentials: boolean; observe: "response"; responseType: string; }' is not assignable to parameter of type '{ headers?: HttpHeaders | { [header: string]: string | string[]; }; observe?: "body"; params?: Ht...'.
  Types of property 'observe' are incompatible.
    Type '"response"' is not assignable to type '"body"'.
src/app/web-to-backend-interface.service.ts(111,52): error TS2345: Argument of type '{ headers: HttpHeaders; withCredentials: boolean; observe: "response"; responseType: string; }' is not assignable to parameter of type '{ headers?: HttpHeaders | { [header: string]: string | string[]; }; observe?: "body"; params?: Ht...'.
  Types of property 'observe' are incompatible.
    Type '"response"' is not assignable to type '"body"'.
src/app/web-to-backend-interface.service.ts(195,73): error TS2345: Argument of type '{ headers: HttpHeaders; withCredentials: boolean; observe: "response"; responseType: string; }' is not assignable to parameter of type '{ headers?: HttpHeaders | { [header: string]: string | string[]; }; observe?: "body"; params?: Ht...'.
src/app/web-to-backend-interface.service.ts(215,72): error TS2345: Argument of type '{ headers: HttpHeaders; withCredentials: boolean; observe: "response"; responseType: string; }' is not assignable to parameter of type '{ headers?: HttpHeaders | { [header: string]: string | string[]; }; observe?: "body"; params?: Ht...'.
src/app/web-to-backend-interface.service.ts(250,54): error TS2345: Argument of type '{ headers: HttpHeaders; withCredentials: boolean; observe: "response"; responseType: string; }' is not assignable to parameter of type '{ headers?: HttpHeaders | { [header: string]: string | string[]; }; observe?: "body"; params?: Ht...'.
src/app/web-to-backend-interface.service.ts(290,9): error TS2322: Type 'Observable<ArrayBuffer>' is not assignable to type 'Observable<HttpEvent<any>>'.
  Type 'ArrayBuffer' is not assignable to type 'HttpEvent<any>'.
    Type 'ArrayBuffer' is not assignable to type 'HttpUserEvent<any>'.
      Property 'type' is missing in type 'ArrayBuffer'.
src/app/web-to-backend-interface.service.ts(296,59): error TS2552: Cannot find name 'response'. Did you mean 'Response'?

在Xamarin Android中实施电话服务

2 个答案: