iOS中更新的API

1.stringByAddingPercentEscapesUsingEncoding->stringByAddingPercentEncodingWithAllowedCharacters

解决方法：

urlStr = [urlStr stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
//urlStr = [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

这篇文章或许能让你了解NSCharacterSet的知识nshipster.cn/nscharacter…