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iOS 將http%3A%2F%2F解析為URL

NSString *str = @"http%3A%2F%2Fmyimg.ifeng.com%2F200%2F22%2F8a941d71c4df48a5%2F1418632228%2F8a941d71c4df48a5_1.jpg"

NSString *strUrl = [str decodeURL];

NSLog(@"%@", strUrl);

列印結果:http://myimg.ifeng.com/200/22/8a941d71c4df48a5/1418632228/8a941d71c4df48a5_1.jpg