我正在使用Google Cast SDK的react native包装器,但无法将消息从发送者发送到接收者。我可以投放媒体,也可以暂停并继续播放。问题仅与自定义消息有关。在接收方永远不会调用我的自定义消息侦听器。消息是否应该具有我所缺少的特定结构?提前致谢。
发件人:
GoogleCast.initChannel('urn:x-cast:testChannel');
GoogleCast.sendMessage('urn:x-cast:testChannel', 'testMessage');
收件人:
const context = cast.framework.CastReceiverContext.getInstance();
const CUSTOM_CHANNEL = 'urn:x-cast:testChannel';
context.addCustomMessageListener(CUSTOM_CHANNEL, function(customEvent) {
// handle customEvent.
console.log('event received');
});
编辑:我能够将消息从接收者发送到发送者:
接收器:
context.sendCustomMessage(CUSTOM_CHANNEL , undefined, 'myMessage');
发件人:
GoogleCast.EventEmitter.addListener(GoogleCast.CHANNEL_MESSAGE_RECEIVED, ({undefined, message}) => {
console.log(message);
});
答案 0 :(得分:0)
我认为这是问题所在
https://issuetracker.google.com/issues/117136854#comment7
所以试试这个...
发送
let message = {msg: 'testMessage'};
message = JSON.stringify(message);
GoogleCast.sendMessage('urn:x-cast:testChannel', message);
和接收器
const CHANNEL = 'urn:x-cast:testChannel';
const ctx = cast.framework.CastReceiverContext.getInstance();
const options = new cast.framework.CastReceiverOptions();
const objToSender =
{
type: 'status',
message: 'Playing'
};
options.customNamespaces = Object.assign({});
options.customNamespaces[CHANNEL] = cast.framework.system.MessageType.JSON;
//receiving sender message
ctx.addCustomMessageListener(CHANNEL, customEvent => document.getElementById("main").innerHTML = customEvent.data.msg);
//message to sender app
ctx.sendCustomMessage(CHANNEL, objToSender);
ctx.start(options);