我尝试在收到 CallKit
的调用后 12 秒添加超时 Timer
但当应用程序在后台。我的代码:
self.callBackgroundHandlerIdentifier = UIApplication.shared.beginBackgroundTask(expirationHandler: {
UIApplication.shared.endBackgroundTask(self.callBackgroundHandlerIdentifier!)
self.callBackgroundHandlerIdentifier = UIBackgroundTaskInvalid
})
DispatchQueue.global(qos: .userInitiated).async {
AppDelegate.callAnswerTimer = Timer.scheduledTimer(timeInterval: 12, target: self, selector: #selector(AppDelegate.hangUpOnCallTimeOut), userInfo: nil, repeats: false)
self.callBackgroundHandlerIdentifier = UIBackgroundTaskInvalid
}
func hangUpOnCallTimeOut(){
AppDelegate.timeOutTimer?.invalidate()
AppDelegate.timeOutTimer = nil
if #available(iOS 10.0, *) {
ProviderDelegate.sharedInstance.endCall(uuids: ApplicationDelegate.activeCalls!) { (uuid) in }
}
if self.callBackgroundHandlerIdentifier != UIBackgroundTaskInvalid {
UIApplication.shared.endBackgroundTask(self.callBackgroundHandlerIdentifier!)
}
}
知道我做错了什么吗?
最佳答案
a) 不要在后台的 block 中添加计时器。在主队列上运行计时器!
b) 不要过早重置 self.callBackgroundHandlerIdentifier。
:) 试试下面的代码
func ... {
self.callBackgroundHandlerIdentifier = UIApplication.shared.beginBackgroundTask(expirationHandler: {
print("expired!")
UIApplication.shared.endBackgroundTask(self.callBackgroundHandlerIdentifier!)
self.callBackgroundHandlerIdentifier = UIBackgroundTaskInvalid
})
AppDelegate.callAnswerTimer = Timer.scheduledTimer(timeInterval: 12, target: self, selector: #selector(AppDelegate.hangUpOnCallTimeOut), userInfo: nil, repeats: false)
}
}
func hangUpOnCallTimeOut(){
AppDelegate.timeOutTimer?.invalidate()
AppDelegate.timeOutTimer = nil
if #available(iOS 10.0, *) {
ProviderDelegate.sharedInstance.endCall(uuids: ApplicationDelegate.activeCalls!) { (uuid) in }
}
if self.callBackgroundHandlerIdentifier != UIBackgroundTaskInvalid {
UIApplication.shared.endBackgroundTask(self.callBackgroundHandlerIdentifier!)
self.callBackgroundHandlerIdentifier = UIBackgroundTaskInvalid
}
}
关于ios - 持续时间 Callkit 后调用超时函数,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44882154/