xamarin表单:拨打电话和发送电子邮件(IOS、Android和UWP)

Xamarin.Essentials ( Nuget )作为预览软件包提供,并包含对两者都适用的功能 open the default mail app and attach information such as the recipients, subject and the body 以及 open the phone dialer with a certain number .

还有一个 blog post 关于Xamarin。在博客上提供基本信息。沙马林。通用域名格式。

编辑: 至于你的邮件问题,沙马林。Essentials需要一组字符串作为收件人,这样您就可以同时向多个人发送邮件。只需传递一个带有单个值的字符串数组。

var recipients = new string[1] {"me@watercod.es"};

如果使用的重载需要一个EmailMessage实例,那么应该传递一个字符串对象列表。 在这种情况下,以下措施应该有效:

var recipients = new List<string> {"me@watercod.es"};

使用Xamarin更新呼叫和邮寄功能的完整代码。重要的是,这可能会帮助其他人。

电话:

   try
    {
        PhoneDialer.Open(number);
    }
    catch (ArgumentNullException anEx)
    {
        // Number was null or white space
    }
    catch (FeatureNotSupportedException ex)
    {
        // Phone Dialer is not supported on this device.
    }
    catch (Exception ex)
    {
        // Other error has occurred.
    }

邮寄:

       List<string> recipients = new List<string>();
        string useremail = email.Text;
        recipients.Add(useremail);
                try
                {
                    var message = new EmailMessage
                    {
                        //Subject = subject,
                        //Body = body,
                        To = recipients
                        //Cc = ccRecipients,
                        //Bcc = bccRecipients
                    };
                    await Email.ComposeAsync(message);
                }
                catch (Exception ex)
                {
                    Debug.WriteLine("Exception:>>"+ex);
                }

你好 在UWP中打电话 :

if (Windows.Foundation.Metadata.ApiInformation.IsTypePresent("Windows.ApplicationModel.Calls.PhoneCallManager"))
            {
                Windows.ApplicationModel.Calls.PhoneCallManager.ShowPhoneCallUI("123", "name to call");
            }

要发送文本:

private async void ComposeSms(Windows.ApplicationModel.Contacts.Contact recipient,
    string messageBody,
    StorageFile attachmentFile,
    string mimeType)
{
    var chatMessage = new Windows.ApplicationModel.Chat.ChatMessage();
    chatMessage.Body = messageBody;

    if (attachmentFile != null)
    {
        var stream = Windows.Storage.Streams.RandomAccessStreamReference.CreateFromFile(attachmentFile);

        var attachment = new Windows.ApplicationModel.Chat.ChatMessageAttachment(
            mimeType,
            stream);

        chatMessage.Attachments.Add(attachment);
    }

    var phone = recipient.Phones.FirstOrDefault<Windows.ApplicationModel.Contacts.ContactPhone>();
    if (phone != null)
    {
        chatMessage.Recipients.Add(phone.Number);
    }
    await Windows.ApplicationModel.Chat.ChatMessageManager.ShowComposeSmsMessageAsync(chatMessage);
}

如Microsoft文档中所示: Compose SMS documentation

==> 所以你可以 (如果尚未完成) 共享服务接口 在Xamarin应用程序中,然后在UWP应用程序中使用这些代码实现。。。

要发送电子邮件: 要使用UWP发送电子邮件,您也可以参考Microsoft文档: Send Email documentation (UWP)

使用插件

否则,您可以使用Xamarin插件:

• 文档: Xamarin cross messaging plugin
• 努吉: Nuget plugin package

在我们的应用程序中,我们使用DependencyService打电话。

因此,在我们的PCL中

public interface IPhoneCall
{
    void Call(string number);
}

在iOS端,以下方法执行调用:

public void Call(string number)
    {
        if (string.IsNullOrEmpty(number))
            return;
        var url = new NSUrl("tel:" + number);
        if (!UIApplication.SharedApplication.OpenUrl(url))
        {
            var av = new UIAlertView("Error",
                         "Your device does not support calls",
                         null,
                         Keys.Messages.BUTTON_OK,
                         null);
            av.Show();
        }
    }

如果你不想等待 Xamarin essentials 到今天为止,它仍在预发布中,您可以使用 this open source plugin .它可以在iOS、Android和UWP上运行。github文档中有一个示例:

// Make Phone Call
var phoneDialer = CrossMessaging.Current.PhoneDialer;
if (phoneDialer.CanMakePhoneCall)
   phoneDialer.MakePhoneCall("+27219333000");

// Send Sms
var smsMessenger = CrossMessaging.Current.SmsMessenger;
if (smsMessenger.CanSendSms)
   smsMessenger.SendSms("+27213894839493", "Well hello there from Xam.Messaging.Plugin");

var emailMessenger = CrossMessaging.Current.EmailMessenger;
if (emailMessenger.CanSendEmail)
{
    // Send simple e-mail to single receiver without attachments, bcc, cc etc.
    emailMessenger.SendEmail("to.plugins@xamarin.com", "Xamarin Messaging Plugin", "Well hello there from Xam.Messaging.Plugin");

    // Alternatively use EmailBuilder fluent interface to construct more complex e-mail with multiple recipients, bcc, attachments etc.
    var email = new EmailMessageBuilder()
      .To("to.plugins@xamarin.com")
      .Cc("cc.plugins@xamarin.com")
      .Bcc(new[] { "bcc1.plugins@xamarin.com", "bcc2.plugins@xamarin.com" })
      .Subject("Xamarin Messaging Plugin")
      .Body("Well hello there from Xam.Messaging.Plugin")
      .Build();

    emailMessenger.SendEmail(email);
}