Question

嗨，这是

中问题的副本

Push Notifications in Ionic 2 with the Pub/Sub Model

我已经在本文后面实现了推送通知＆gt; https://medium.com/@ankushaggarwal/push-notifications-in-ionic-2-658461108c59#.xvoeao59a

我想要的是能够在应用程序中发生某些事件（如聊天或预订或新职位）时向用户发送通知。

如何更进一步，这是我的第一个应用程序。

Answer 1

注意：代码与教程几乎完全相同，Java只转换为Kotlin

这是我的实际离子侧代码（在登录页面上）。当用户打开应用程序时，push.on('registration')将被触发，稍后（成功登录时）变量this.device_id将被发送到我的Kotlin REST API，因此我知道device_id并将其耦合到用户。这样您就可以发送有针对性的推送通知。

如果您从Kotlin发送推送通知（代码如下所示，看起来有点像Java），那么（通常打开，甚至在启动后打开）与Google的连接将发送您的设备（由device_id定义带有通知数据（标题，消息等）的消息，在此消息之后，您的设备将识别senderID并将其匹配以使用离子应用程序。

initializeApp() {
    this.platform.ready().then(() => {

      let push = Push.init({
        android: {
          senderID: "1234567890"
        },
        ios: {
          alert: "true",
          badge: false,
          sound: "true"
        },
        windows: {}
      });

      //TODO - after login
      push.on('registration', (data) => {
        this.device_id = data.registrationId;
      }); 

      push.on('notification', (data) => {
        console.log('message', data.message);
        let self = this;
        //if user using app and push notification comes
        if (data.additionalData.foreground) {
          // if application open, show popup
          let confirmAlert = this.alertCtrl.create({
            title: data.title,
            message: data.message,
            buttons: [{
              text: 'Negeer',
              role: 'cancel'
            }, {
              text: 'Bekijk',
              handler: () => {
                //TODO: Your logic here
                this.navCtrl.setRoot(EventsPage, {message: data.message});
              }
            }]
          });
          confirmAlert.present();
        } else {
          //if user NOT using app and push notification comes
          //TODO: Your logic on click of push notification directly
          this.navCtrl.setRoot(EventsPage, {message: data.message});
          console.log("Push notification clicked");
        }
      });
      push.on('error', (e) => {
        console.log(e.message);
      });

    });
  }

Kotlin代码（从Java示例转换，基本相同

package mycompany.rest.controller

import mycompany.rest.domain.User
import java.io.OutputStream
import java.net.HttpURLConnection
import java.net.URL

class PushNotification {    
    companion object {
        val SERVER_KEY = "sOmE_w31rD_F1r3Ba5E-KEy";

        @JvmStatic fun sendPush(user: User, message: String, title: String) {
            if(user.deviceId != "unknown"){
                val pushMessage = "{\"data\":{\"title\":\"" +
                title +
                "\",\"message\":\"" +
                message +
                "\"},\"to\":\"" +
                user.deviceId +
                "\"}";


                val url: URL = URL("https://fcm.googleapis.com/fcm/send")
                val conn: HttpURLConnection = url.openConnection() as HttpURLConnection
                conn.setRequestProperty("Authorization", "key=" + SERVER_KEY)
                conn.setRequestProperty("Content-Type", "application/json")
                conn.setRequestMethod("POST")
                conn.setDoOutput(true)

                //send the message content
                val outputStream: OutputStream = conn.getOutputStream()
                outputStream.write(pushMessage.toByteArray())
                println(conn.responseCode)
                println(conn.responseMessage)
            }else {
                println("Nope, not executed")
            }
        }   

        @JvmStatic fun sendPush(users: List<User>, message: String, title: String) {
            for(u in users) {
                PushNotification.sendPush(u, message, title)
            }
        }
    }
}

然后该方法可以被称为PushNotification.sendPush(user1, "Hello world!", "my title");

（btw意识到你不需要从服务器（localhost / external）运行推送通知。你可以创建一个主类，用你的硬编码deviceId发送它以进行测试

使用Pub / Sub模型在Ionic 2中实现推送通知

1 个答案: