stringByAddingPercentEscapesUsingEncoding(只對 `#%^{}[]|\"<> 加空格共14個字符編碼，不包括”&?”等符號), ios9將淘汰，建議用 stringByAddingPercentEncodingWithAllowedCharacters 方法

stringByAddingPercentEncodingWithAllowedCharacters? 需要傳一個??NSCharacterSet? 對象（關于? NSCharacterSet?這篇?文章說的很好）

如[NSCharacterSet ?URLQueryAllowedCharacterSet]

URLFragmentAllowedCharacterSet "#%<>[\]^`{|} URLHostAllowedCharacterSet "#%/<>?@\^`{|} URLPasswordAllowedCharacterSet "#%/:<>?@[\]^`{|} URLPathAllowedCharacterSet "#%;<>?[\]^`{|} URLQueryAllowedCharacterSet "#%<>[\]^`{|} URLUserAllowedCharacterSet "#%/:<>?@[\]^`

（2）網絡訪問請求：中文空格字符解碼

stringByRemovingPercentEncoding? ----? xcode7可能會提示要將stringByAddingPercentEscapesUsingEncoding替換成此方法，要根據是否是解碼來區分

代替? stringByAddingPercentEscapesUsingEncoding

let customAllowedSet = NSCharacterSet(charactersInString:"`#%^{}\"[]|\\<> ").invertedSetNSString *urlStr = [urlStr stringByAddingPercentEncodingWithAllowedCharacters:[[NSCharacterSet characterSetWithCharactersInString:@"?!@#$^&%*+,:;='\"`<>()[]{}/\\| "] invertedSet]];

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轉載于:https://www.cnblogs.com/jiuyi/p/10113578.html

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