如何在 iOS Swift 中使用 Watson Conversation？

Question

我将根据Build a home assistant mobile application with Watson and IoT Platform services更新我的自定义示例

在这段代码中，我得到消息：

无法将“字符串”类型的值转换为预期的参数类型“输入数据”？

如何解决这个问题？ 在documentation of developer cloud/conversation/api里面我可以找到InputData的定义，但是NO示例如何在Swift iOS中实现呢？

    // Based on API Changes
    // ====================
    // Incorrect argument label in call (have 'text:context:', expected 'input:context:')
    // Cannot convert value of type 'String' to expected argument type 'InputData?'
    let request = MessageRequest(input: text, context: self.context)
    self.conversation?.message(workspaceID: Credentials.ConversationWorkspaceID,
                               request: request,
                               failure: failure) {
                                response in
                                print(response.output.text)
                                self.didReceiveConversationResponse(response.output.text)
                                self.context = response.context
                                // issue command based on intents and entities
                                // Additional Properties:
                                // response.context.json -> response.context.additionalProperties
                                print("appl_action: \(response.context.additionalProperties["appl_action"])")
                                self.issueCommand(intents: response.intents, entities: response.entities)
    }

Answer 1

MessageRequest 构造函数的input 参数采用InputData 对象，该对象很容易从文本字符串构造。试试

let input = InputData(text: text)
let request = MessageRequest(input: input, context: self.context)
self.conversation?.message(workspaceID: Credentials.ConversationWorkspaceID,
                           request: request,
                           failure: failure) {