I got this warning:
我收到了警告:
'CFURLCreateStringByAddingPercentEscapes' is deprecated: first deprecated in iOS 9.0 - Use [NSString stringByAddingPercentEncodingWithAllowedCharacters:] instead, which always uses the recommended UTF-8 encoding, and which encodes for a specific URL component or subcomponent (since each URL component or subcomponent has different rules for what characters are valid).
'CFURLCreateStr
