几天前我刚刚实现了推送通知，我将在这里分享我的解决方案（基于PushSharp）
分步指南：
1)在共享项目中，创建名为IPushNotificationRegister的接口

public interface IPushNotificationRegister
{
    void ExtractTokenAndRegister();
}

此接口用于获取推送令牌，然后将其发送到服务器。此令牌对于每个设备是唯一的。
2)在您的共享项目中，您应该调用ExtractTokenAndRegister（使用您最喜欢的IOC，我在登录后立即调用它）。

- Android实施：**

3)添加用于侦听Google GCM服务接收的事件的接收器：
（a）

[BroadcastReceiver]
[IntentFilter(new[] { Intent.ActionBootCompleted })]
public class GCMBootReceiver : BroadcastReceiver
{
    public override void OnReceive(Context context, Intent intent)
    {
        MyIntentService.RunIntentInService(context, intent);
        SetResult(Result.Ok, null, null);
    }
}

（b）

[assembly: Permission(Name = "@PACKAGE_NAME@.permission.C2D_MESSAGE")]
[assembly: UsesPermission(Name = "android.permission.WAKE_LOCK")]
[assembly: UsesPermission(Name = "@PACKAGE_NAME@.permission.C2D_MESSAGE")]
[assembly: UsesPermission(Name = "com.google.android.c2dm.permission.RECEIVE")]
[assembly: UsesPermission(Name = "android.permission.GET_ACCOUNTS")]
[assembly: UsesPermission(Name = "android.permission.INTERNET")]

namespace Consumer.Mobile.Droid.PushNotification
{
    [BroadcastReceiver(Permission = "com.google.android.c2dm.permission.SEND")]
    [IntentFilter(new string[] { "com.google.android.c2dm.intent.RECEIVE" }, Categories = new string[] { "@PACKAGE_NAME@" })]
    [IntentFilter(new string[] { "com.google.android.c2dm.intent.REGISTRATION" }, Categories = new string[] { "@PACKAGE_NAME@" })]
    [IntentFilter(new string[] { "com.google.android.gcm.intent.RETRY" }, Categories = new string[] { "@PACKAGE_NAME@" })]
    [IntentFilter (new[]{ Intent.ActionBootCompleted }, Categories = new[]{ Intent.CategoryDefault })]
    public class GCMBroadcastReceiver : BroadcastReceiver
    {
        public override void OnReceive(Context context, Intent intent)
        {
            MyIntentService.RunIntentInService(context, intent);
            SetResult(Result.Ok, null, null);
        }
    }
}

c）添加Intent服务以处理通知

using Android.App;
using Android.Content;
using Android.Graphics;
using Android.Media;
using Android.OS;
using Android.Support.V4.App;
using Consumer.Mobile.Infra;
using Consumer.Mobile.Services.PushNotification;
using Java.Lang;
using XLabs.Ioc;
using TaskStackBuilder = Android.Support.V4.App.TaskStackBuilder;

namespace Consumer.Mobile.Droid.PushNotification
{
    [Service]
    public class MyIntentService : IntentService
    {
        private readonly ILogger _logger;
        private readonly IPushNotificationService _notificationService;
        private readonly IPushNotificationRegister _pushNotificationRegister;

        public MyIntentService()
        {
            _logger = Resolver.Resolve<ILogger>();
            _notificationService = Resolver.Resolve<IPushNotificationService>();
            _pushNotificationRegister = Resolver.Resolve<IPushNotificationRegister>();
        }

        static PowerManager.WakeLock _sWakeLock;
        static readonly object Lock = new object();

        public static void RunIntentInService(Context context, Intent intent)
        {
            lock (Lock)
            {
                if (_sWakeLock == null)
                {
                    // This is called from BroadcastReceiver, there is no init.
                    var pm = PowerManager.FromContext(context);
                    _sWakeLock = pm.NewWakeLock(
                    WakeLockFlags.Partial, "My WakeLock Tag");
                }
            }

            _sWakeLock.Acquire();
            intent.SetClass(context, typeof(MyIntentService));
            context.StartService(intent);
        }

        protected override void OnHandleIntent(Intent intent)
        {
            try
            {
                Context context = this.ApplicationContext;
                string action = intent.Action;

                if (action.Equals("com.google.android.c2dm.intent.REGISTRATION"))
                {
                    HandleRegistration(context, intent);
                }
                else if (action.Equals("com.google.android.c2dm.intent.RECEIVE"))
                {
                    HandleMessage(context, intent);
                }
            }
            finally
            {
                lock (Lock)
                {
                    //Sanity check for null as this is a public method
                    if (_sWakeLock != null)
                        _sWakeLock.Release();
                }
            }
        }

        private void HandleMessage(Context context, Intent intent)
        {

            Intent resultIntent = new Intent(this, typeof(MainActivity));

            TaskStackBuilder stackBuilder = TaskStackBuilder.Create(this);

            var c = Class.FromType(typeof(MainActivity));
            stackBuilder.AddParentStack(c);
            stackBuilder.AddNextIntent(resultIntent);

            string alert = intent.GetStringExtra("Alert");
            int number = intent.GetIntExtra("Badge", 0);

            var imageUrl = intent.GetStringExtra("ImageUrl");
            var title = intent.GetStringExtra("Title");

            Bitmap bitmap = GetBitmap(imageUrl);

            PendingIntent resultPendingIntent = stackBuilder.GetPendingIntent(0, (int)PendingIntentFlags.UpdateCurrent);

            NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
                .SetAutoCancel(true) // dismiss the notification from the notification area when the user clicks on it
                .SetContentIntent(resultPendingIntent) // start up this activity when the user clicks the intent.
                .SetContentTitle(title) // Set the title
                .SetNumber(number) // Display the count in the Content Info
                .SetSmallIcon(Resource.Drawable.Icon) // This is the icon to display
                .SetLargeIcon(bitmap)
                .SetSound(RingtoneManager.GetDefaultUri(RingtoneType.Notification))
                .SetContentText(alert); // the message to display.

            // Build the notification:
            Notification notification = builder.Build();

            // Get the notification manager:
            NotificationManager notificationManager =
                GetSystemService(Context.NotificationService) as NotificationManager;

            // Publish the notification:
            const int notificationId = 0;
            notificationManager.Notify(notificationId, notification);
        }

        private void HandleRegistration(Context context, Intent intent)
        {
            var token = intent.GetStringExtra("registration_id");
            _logger.Info(this.Class.SimpleName, "Received Token : " + token);

            if (_pushNotificationRegister.ShouldSendToken(token))
            {
                var uid = Android.Provider.Settings.Secure.GetString(MainActivity.Context.ContentResolver, Android.Provider.Settings.Secure.AndroidId);
                _notificationService.AddPushToken(token, DeviceUtils.GetDeviceType(), uid);
            }
        }

        private Bitmap GetBitmap(string url)
        {

            try
            {
                System.Net.WebRequest request =
                    System.Net.WebRequest.Create(url);
                System.Net.WebResponse response = request.GetResponse();
                System.IO.Stream responseStream =
                    response.GetResponseStream();
                return BitmapFactory.DecodeStream(responseStream);

            }
            catch (System.Net.WebException)
            {
                return null;
            }

        }

    }
}

d）实现接口IPushNotificationRegister：

using Android.App;
using Android.Content;
using Consumer.Mobile.Services;
using Consumer.Mobile.Services.PushNotification;
[assembly: Permission(Name = "@PACKAGE_NAME@.permission.C2D_MESSAGE")]
[assembly: UsesPermission(Name = "@PACKAGE_NAME@.permission.C2D_MESSAGE")]

// Gives the app permission to register and receive messages.
[assembly: UsesPermission(Name = "com.google.android.c2dm.permission.RECEIVE")]

// Needed to keep the processor from sleeping when a message arrives
[assembly: UsesPermission(Name = "android.permission.WAKE_LOCK")]
[assembly: UsesPermission(Name = "android.permission.RECEIVE_BOOT_COMPLETED")]
namespace Consumer.Mobile.Droid.PushNotification
{
    public class PushNotificationRegister : IPushNotificationRegister
    {          
        public override void ExtractTokenAndRegister()
        {
            string senders = AndroidConfig.GCMSenderId;
            Intent intent = new Intent("com.google.android.c2dm.intent.REGISTER");
            intent.SetPackage("com.google.android.gsf");
            intent.PutExtra("app", PendingIntent.GetBroadcast(MainActivity.Context, 0, new Intent(), 0));
            intent.PutExtra("sender", senders);
            MainActivity.Context.StartService(intent);
        }

    }
}

- iOS实施：**

4)在AppDelegate中，添加以下方法：
（a）

public override void RegisteredForRemoteNotifications(UIApplication application, NSData deviceToken)
{
    var deviceTokenString = deviceToken.ToString().Replace("<","").Replace(">", "").Replace(" ", "");
    var notificationService = Resolver.Resolve<IPushNotificationService>();
    var pushNotificationRegister = Resolver.Resolve<IPushNotificationRegister>();

    if (pushNotificationRegister.ShouldSendToken(deviceTokenString))
    {
        var uid = UIDevice.CurrentDevice.IdentifierForVendor.AsString();
        notificationService.AddPushToken(deviceTokenString, DeviceUtils.GetDeviceType(), uid);
    }
}

b）实施IPushNotificationRegister：

using Consumer.Mobile.Services;
using Consumer.Mobile.Services.PushNotification;
using UIKit;

namespace Consumer.Mobile.iOS.PushNotification
{
    public class iOSPushNotificationRegister : IPushNotificationRegister
    {
        public override void ExtractTokenAndRegister()
        {
            const UIRemoteNotificationType notificationTypes = UIRemoteNotificationType.Alert | UIRemoteNotificationType.Badge | UIRemoteNotificationType.Sound;
            UIApplication.SharedApplication.RegisterForRemoteNotificationTypes(notificationTypes);
        }
    }
}

关于WP，我没有实现它.
如果你需要在服务器端使用PushSharp的代码，让我知道。
您可以查看基于here解决方案的客户端示例

xamarin支持和表单建议我使用以下插件。
这个插件运行良好
https://github.com/rdelrosario/xamarin-plugins/tree/master/PushNotification
会更新答案，一旦我得到它的工作。

- 更新日期：**
我收到了适用于iOS和Android的推送通知。*

我使用了Google Cloud Messaging Client，这是一个非常好的Android组件，并且不需要像this answer中提到的那样编写太多代码。
我的iOS实现类似于this，不需要太多代码。
为了从服务器推送通知，我使用了PushSharp的nuget包。
我没有在WP中实现，因为这在我的项目中没有要求。
如果您打算实现推送通知，这篇Xamarin Help on Push Notifications值得一读。
更新（2018年6月）-在iOS和Android上使用以下FCM插件，它支持Xamarin。

6条答案

按热度按时间

3zwtqj6y1#

赞(0）回复(0）举报 2022-12-31

fkvaft9z2#

cedebl8k3#

在Xamarin表单中，你也可以使用通知SDK，比如Donky（相当于欧洲的美国城市飞艇）;你可以在一天之内轻松制作一个可扩展的通知项目，我已经两次使用这个SDK在35分钟内构建WhatsApp克隆shell。

7d7tgy0s4#

您可以查看Appboy组件，它具有开箱即用的支持。https://components.xamarin.com/view/appboy-sdk-bindings
正如其他人所说，没有某些特定于平台的组件，您就无法进行一般性操作。

jc3wubiy5#

这在纯Xamarin.Forms中是不可能做到的，但是对于实现一个可以在App.cs中处理它们的解决方案来说相对来说是微不足道的（尽管这需要特定于平台的实现）。
看看Xamarin.Forms.Labs项目中的IXForms实现，其中通知被引导回Forms项目：
https://github.com/XLabs/Xamarin-Forms-Labs
更具体地说：
https://github.com/XLabs/Xamarin-Forms-Labs/tree/master/src/Platform/XLabs.Platform/Mvvm

wb1gzix06#

最近有一篇博客文章是关于使用Azure移动的服务在Xamarin表单上实现推送通知的（每个平台都是如此，因为没有基于表单的实现）。
http://www.xamarinhelp.com/push-notifications/

如何在Xamarin表单中使用推送通知

6条答案

相关问题

热门标签

最新问答