iOS---stringByAddingPercentEscapesUsingEncoding:' is deprecated: first deprecated in iOS 9.0 - Use -stringByAddingPercentEncodingWithAllowedCharacters: instead,

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旧方法

 NSString *encoded = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

iOS9  之后的   新方法

//    NSString *encoded = [url stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];

//      [NSCharacterSet URLQueryAllowedCharacterSet];

iOS---stringByAddingPercentEscapesUsingEncoding:' is deprecated: first deprecated in iOS 9.0 - Use -stringByAddingPercentEncodingWithAllowedCharacters: instead,

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原文地址：http://www.cnblogs.com/KiVen2015/p/5825424.html