Setlocale In Ios Aka Swprintf In Ios Error Eilseq

when work with swprintf (or wchar functions),you probably want set locale to en_US.UTF-8,but in ios there is no en_US.UTF-8 locale,this is what you should to

How

• copy en_US.UTF-8 to your ios project resource path,and add to project

sudo copy -r /usr/share/locale/en_US.UTF-8/ your_ios_resource_path/en_US.UTF-8/

• set locale in AppController applicationDidFinishLaunchingWithOptions

NSString* resources = [ [ NSBundle mainBundle ] resourcePath ];
setenv("PATH_LOCALE", [resources cStringUsingEncoding:1], 1);
setlocale( LC_CTYPE, "en_US.UTF-8" );

• when format string use %ls instead