我试图在类文件的顶部设置一个变量,这样我就可以使用几行了。我遇到的问题是Instance member 'streamWidth' cannot be used on type 'BroadcastViewController'
。所以我认为这种情况正在发生,因为我不能在主类中引用这个变量,我必须在函数中使用它。现在,如果是这种情况,有没有办法解决这个问题?
class BroadcastViewController: UIViewController, VCSessionDelegate {
@IBOutlet weak var previewView: UIView!
@IBOutlet weak var btnConnect: UIButton!
var streamWidth:Int = Int(5)
var session:VCSimpleSession = VCSimpleSession(videoSize: CGSize(width: streamWidth, height: 720), frameRate: 30, bitrate: 1000000, useInterfaceOrientation: false)
override func viewDidLoad() {
super.viewDidLoad()
previewView.addSubview(session.previewView)
session.previewView.frame = previewView.bounds
session.delegate = self
}
deinit {
btnConnect = nil
previewView = nil
session.delegate = nil;
}
@IBAction func btnConnectTouch(sender: AnyObject) {
switch session.rtmpSessionState {
case .None, .PreviewStarted, .Ended, .Error:
session.startRtmpSessionWithURL("rtmp://east-us.livewx.tv/live", andStreamKey: "fb4843e86976e37" + "?key=" + "e5615d9b171384a0613f")
default:
session.endRtmpSession()
break
}
func connectionStatusChanged(sessionState: VCSessionState) {
switch session.rtmpSessionState {
case .Starting:
btnConnect.setTitle("Connecting", forState: .Normal)
case .Started:
btnConnect.setTitle("Disconnect", forState: .Normal)
default:
btnConnect.setTitle("Connect", forState: .Normal)
}
}
// more functions left out for length reasoning
}
因此,deinit
,btnConnectTouch
和connectionStatusChanged
等部分功能都使用顶部定义的var会话。
我在问:我如何在var session:VCSimpleSession
内使用变量?
非常感谢!
答案 0 :(得分:2)
初始化其他实例变量时,您无法使用实例变量。
如果我是你,我会将session
更改为implicitly unwrapped optional并稍后对其进行初始化:
var session: VCSimpleSession!
override func viewDidLoad() {
super.viewDidLoad()
session = VCSimpleSession(videoSize: CGSize(width: streamWidth, height: 720), frameRate: 30, bitrate: 1000000, useInterfaceOrientation: false)
previewView.addSubview(session.previewView)
session.previewView.frame = previewView.bounds
session.delegate = self
}