UIWeb 视图崩溃 Swift

Question

我正在使用以下用途 webview

let url = NSURL(string: "")
let request = NSURLRequest(URL: url!); webview.loadRequest(request)

当我点击第一个按钮时，应用程序崩溃，即使它确实发送了启动 web view

2016-01-17 21:04:45.632 HHKNBK[38603:34872679] Unknown class _TtC6HHKNBK6button in Interface Builder file. 2016-01-17 21:04:45.633 HHKNBK[38603:34872679] Unknown class _TtC6HHKNBK6button in Interface Builder file.fatal error: unexpectedly found nil while unwrapping an Optional value(lldb)

错误的指令

Answer 1

使用条件展开来防止崩溃。

if let url = NSURL(string: "") {
    let request = NSURLRequest(URL: url)
    //...
}

UIWeb 视图崩溃 Swift

UIWeb View Crashing Swift

uiwebview

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swift