iOS project development--Get binary data of Web page source code

In my previous blog, "iOS Project development Combat--ios Web Programming Web page HTML source code " describes how to get a Web page HTML source code, can meet certain needs. But for special reasons, we want to get a binary data of a Web page, so what should we do?

The specific implementation is as follows:

(1) Create an iOS project, language select Swift, and write the following code in Viewcontroller.swift:

    Override Func Viewdidload () {        super.viewdidload ()        var data = NSData (Contentsofurl:nsurl (string: "/HTTP// Www.baidu.com ")!)        println (data!)            }

(2) Run the program, the result is as follows, can successfully obtain the Web page binary data:

。

(3) optimization is now available for situations where the return may be empty, and the optimization code is as follows:

    Override Func Viewdidload () {        super.viewdidload ()        var data = NSData (Contentsofurl:nsurl (string: "FDSVSDFGVDF" )!)                If let BinaryData = data{                    println (data!)                    } else{                    println ("Failed to get Network data")}            }

The output at this point is "failed to get network data". Prevents a crash when a system network request fails.

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

iOS project development--Get binary data of Web page source code