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@rohandubal @gkwicker @karthiksaligrama
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/*
* Copyright 2010-2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
import UIKit
import AWSIoT
class SubscribeViewController: UIViewController {
@IBOutlet weak var subscribeSlider: UISlider!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
subscribeSlider.isEnabled = false
}
override func viewWillAppear(_ animated: Bool) {
let iotDataManager = AWSIoTDataManager(forKey: ASWIoTDataManager)
let tabBarViewController = tabBarController as! IoTSampleTabBarController
iotDataManager.subscribe(toTopic: tabBarViewController.topic, qoS: .messageDeliveryAttemptedAtMostOnce, messageCallback: {
(payload) ->Void in
let stringValue = NSString(data: payload, encoding: String.Encoding.utf8.rawValue)!
print("received: \(stringValue)")
DispatchQueue.main.async {
self.subscribeSlider.value = stringValue.floatValue
}
} )
}
override func viewWillDisappear(_ animated: Bool) {
let iotDataManager = AWSIoTDataManager(forKey: ASWIoTDataManager)
let tabBarViewController = tabBarController as! IoTSampleTabBarController
iotDataManager.unsubscribeTopic(tabBarViewController.topic)
}
}
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