代码：
do{
let isConnectOk = try stream.connectWithTimeout(XMPPStreamTimeoutNone)
if isConnectOk
{
var alert = UIAlertController(title: "Alert", message: "Cannot connect to : \(error!.localizedDescription)", preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Click", style: UIAlertActionStyle.Default, handler: nil))
self.window?.rootViewController?.presentViewController(alert, animated: true, completion: nil)
return false
}
}catch{
print(error)
}出错：
SwiftXMPP/AppDelegate.swift:117:20: Type ‘()’ does not conform to protocol ‘BooleanType’
参考：
最后改为：
do{
try stream.connectWithTimeout(XMPPStreamTimeoutNone)
}catch{
let alert = UIAlertController(title: "Alert", message: "Cannot connect to : \(error)", preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Click", style: UIAlertActionStyle.Default, handler: nil))
self.window?.rootViewController?.presentViewController(alert, animated: true, completion: nil)
return false
}才通过编译了。
感觉像是：
ObjC的代码：
- (BOOL)connectWithTimeout:(NSTimeInterval)timeout error:(NSError **)errPtr;
原先用法是：
if !stream.connectWithTimeout(XMPPStreamTimeoutNone, error: &error) {
var alert = UIAlertController(title: "Alert", message: "Cannot connect to : \(error!.localizedDescription)", preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Click", style: UIAlertActionStyle.Default, handler: nil))
self.window?.rootViewController?.presentViewController(alert, animated: true, completion: nil)
return false
}现在改为：
do{
try stream.connectWithTimeout(XMPPStreamTimeoutNone)
}catch{
let alert = UIAlertController(title: "Alert", message: "Cannot connect to : \(error)", preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Click", style: UIAlertActionStyle.Default, handler: nil))
self.window?.rootViewController?.presentViewController(alert, animated: true, completion: nil)
return false
}才可以。
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