Xamarin android FCM通知客户端到客户端(手机到手机)

时间:2018-03-15 03:14:07

标签: android firebase xamarin firebase-cloud-messaging

我按照https://docs.microsoft.com/en-us/xamarin/android/data-cloud/google-messaging/remote-notifications-with-fcm?tabs=vswin中的教程设法制作服务器到客户端的通知。

我在java中找到了一些教程和示例,但我需要在Xamarin android平台上进行。

我需要制作应用程序,将通知从一部手机发送到一部手机,客户端到客户端仍在使用FCM,任何人都有我可以挖掘的想法或示例代码?

1 个答案:

答案 0 :(得分:0)

首先,请按照this一步一步完成,然后您将获得基本应用程序。

其次,添加一个按钮将Http发送到FCM服务器:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
  <TextView
      android:text=" "
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/msgText"
      android:textAppearance="?android:attr/textAppearanceMedium"
      android:padding="10dp" />
  <Button
    android:id="@+id/bt"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>
</LinearLayout>

初始化OnCreate中的按钮:

protected override void OnCreate(Bundle savedInstanceState)
{
    base.OnCreate(savedInstanceState);

    // Set our view from the "main" layout resource
    SetContentView(Resource.Layout.Main);
    msgText = FindViewById<TextView>(Resource.Id.msgText);
    IsPlayServicesAvailable();
    Button bt = FindViewById<Button>(Resource.Id.bt);
    bt.Click += Bt_Click;

}

这里我使用了两个类来生成json字符串,我正在使用json.net

class Mes
{
    public string to;
    public Noti notification;
    public Mes(string to,Noti notification){
        this.to = to;
        this.notification = notification;
    }
}
class Noti {
    public string title;
    public string text;
    public Noti(string body,string text) {
        this.title = body;
        this.text = body;
    }
}

点击事件(我正在使用okhttp3):

 private void Bt_Click(object sender, System.EventArgs e)
{

    Mes mes = new Mes("your token",
        new Noti("great","yes"));
    string json = JsonConvert.SerializeObject(mes);
    Log.Error("json",json);
    OkHttpClient client = new OkHttpClient();
    RequestBody body = RequestBody.Create(
    MediaType.Parse("application/json; charset=utf-8"),json);
    Request request = new Request.Builder()
        .Url("https://fcm.googleapis.com/fcm/send")// this is the base url which you can find it from  https://firebase.google.com/docs/cloud-messaging/http-server-ref?#params
        .Post(body)
        .AddHeader("Authorization", "your app key")// find it from this case https://stackoverflow.com/questions/37337512/where-can-i-find-the-api-key-for-firebase-cloud-messaging
        .Build();

    // Synchronous blocking call

    client.NewCall(request).Enqueue(
        (call, response) => {
        // Response came back
        string body1 = response.Body().String();
        Log.Error("lv",body1);
        }, (call, exception) => {
            // There was an error
            Log.Error("lv", exception.Message);
        });
}

点击按钮后,您会收到通知(如果您已完成第一个链接),此外,您不需要发送通知,您可以使用该数据执行其他操作。

更新1:

将您的MyFirebaseIIDService更改为:

public class MyFirebaseIIDService : FirebaseInstanceIdService
{
    const string TAG = "MyFirebaseIIDService";
   public static string token;
    public override void OnTokenRefresh()
    {
         token = FirebaseInstanceId.Instance.Token;
        Log.Debug(TAG, "Refreshed token: " + token);
        SendRegistrationToServer(token);
    }
    void SendRegistrationToServer(string token)
    {
        // Add custom implementation, as needed.
    }
}

然后使用它:

Mes mes = new Mes(MyFirebaseIIDService.token,new Noti("great","yes"));

更新2:

    Request request = new Request.Builder()
        .Url("https://fcm.googleapis.com/fcm/send")
        .Post(body)
        .AddHeader("Authorization", "key=AAAAjPn9-TY:APA91bE-g4774KmFI72V1gWATmK8uta7N7NgcufoEgGgdidU9wyWBQ5YagCjP0WPBKrgILHZSVeb1I9vegYC-YfFHE2umWWcTzjo-t7W8ynDkwbB6qHY7JZExaxxvlI3VIg3d66sFZ40")
        .Build();

这是我的http请求,请注意AddHeader方法,您需要使用key=...