我正在使用 NativeScript 并已實(shí)現(xiàn) Pusher-Java 庫作為依賴項(xiàng)，我可以成功連接并訂閱我的 Pusher 頻道，但我無法向我的頻道添加 SubscriptionEventListener，這是我的代碼，它使用 Nativescript 中的 java 庫連接到推送器：module.exports = { connect:function(app_key, channel_name, event_name) { PusherOptions = com.pusher.client.PusherOptions; Pusher = com.pusher.client.Pusher; Channel = com.pusher.client.channel.Channel; SubscriptionEventListener = com.pusher.client.channel.SubscriptionEventListener; PusherEvent = com.pusher.client.channel.PusherEvent; var options = new PusherOptions().setCluster("eu"); var pusher = new Pusher(app_key, options); pusher.connect(); var channel = new Channel(pusher.subscribe(channel_name)); }};以下是將 SubscriptionEventListener 綁定到通道的 Java 代碼：channel.bind("my-event", new SubscriptionEventListener() { @Override public void onEvent(PusherEvent event) { System.out.println("Received event with data: " + event.toString()); }});現(xiàn)在我如何使用 Javascript 綁定它??？我已經(jīng)嘗試了所有我能想到的方法，但仍然無法使用 Javascript 將 SubscriptionEventListener 綁定到通道，謝謝更新我正在使用這種方法，預(yù)計(jì)會起作用，@Manoj 也在這里回答了：channel.bind(event_name, new SubscriptionEventListener({ onEvent: function(event) { console.log(event.toString()); } }));但它不起作用，我收到此錯(cuò)誤：java.lang.RuntimeException: Unable to start activity ComponentInfo{org.nativescript.plugintestproject/com.tns.NativeScriptActivity}: com.tns.NativeScriptException: Calling js method onCreate failedSystem.err: Error: Building UI from XML. @app-root.xml:1:1System.err: > java.lang.AbstractMethodError: abstract method "void com.pusher.client.channel.Channel.bind(java.lang.String, com.pusher.client.channel.SubscriptionEventListener)"System.err: com.tns.Runtime.callJSMethodNative(Native Method)
3 回答
桃花長相依
TA貢獻(xiàn)1860條經(jīng)驗(yàn) 獲得超8個(gè)贊
有幾件事：
為什么不直接使用 nativescript-pusher 插件呢？它已經(jīng)存在了...
第二，如果你不想使用它；為什么不借用代碼，因?yàn)樗窃?Apache 2.0 許可證下的。
不過，要具體回答你的問題：
const sel = new com.pusher.client.channel.SubscriptionEventListener( {
onEvent: function(channel, event, data) {
console.log("Channel:", channel, "Event", event, "received event with data: " + data.toString());
}
} );
首先，在創(chuàng)建事件時(shí)，您確實(shí)應(yīng)該使用 FULL 命名空間（這使得創(chuàng)建的內(nèi)容一目了然）。
其次，你的原型onEvent是錯(cuò)誤的。根據(jù)文檔，它是Channel, Event, Data傳遞給它的參數(shù)。
萬千封印
TA貢獻(xiàn)1891條經(jīng)驗(yàn) 獲得超3個(gè)贊
SubscriptionEventListener是一個(gè)接口，您應(yīng)該實(shí)現(xiàn)方法并將實(shí)例傳遞給綁定方法，如文檔中所示。
channel.bind("my-event",?
? ?new SubscriptionEventListener({
? ? onEvent: function(event) {
? ? ? ? console.log("Received event with data: " + event.toString());
? ? }
? ?})
);
慕村9548890
TA貢獻(xiàn)1884條經(jīng)驗(yàn) 獲得超4個(gè)贊
module.exports = {
connect:function(app_key, channel_name, event_name) {
PusherOptions = com.pusher.client.PusherOptions;
Pusher = com.pusher.client.Pusher;
Channel = com.pusher.client.channel.Channel;
PusherEvent = com.pusher.client.channel.PusherEvent;
SubscriptionEventListener = com.pusher.client.channel.SubscriptionEventListener;
ChannelEventListener = com.pusher.client.channel.ChannelEventListener;
const options = new PusherOptions().setCluster("eu");
const pusher = new Pusher(app_key, options);
pusher.connect();
const channel = new Channel(pusher.subscribe(channel_name));
const connectedChannel = pusher.getChannel(channel_name);
let sel = new SubscriptionEventListener({
onEvent: function(event) {
console.log(event);
}
});
connectedChannel.bind(event_name, sel);
}
};
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