摘要：
1、数字字符校验#defineNUMBERSPERIOD@"0123456789."-(BOOL)CheckInput:(NSString*)string{ NSCharacterSet*cs; cs=[[NSCharacterSetcharacterSetWithCharactersInString:NUMBERSPERIOD]invertedSet];NSString*filtered=[[stringcomponentsSeparatedByCharactersInSet:cs]componentsJoinedByString:@""];BOOLb 阅读全文