做登录界面时，用户在UITextfield中输入输入邮箱账号后，我们应该在本地验证格式是否正确，再将参数传给服务器验证。
最简单的就是利用系统的NSPredicate
//利用正则表达式验证
-(BOOL)isValidateEmail:(NSString *)email {
NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
return [emailTest evaluateWithObject:email];
}
iOS验证手机号正则表达式
#import "NSString+Check.h"
@implementation NSString (Check)
-(BOOL)checkPhoneNumInput{
NSString * MOBILE = @"^1(3[0-9]|5[0-35-9]|8[025-9])\d{8}$";
NSString * CM = @"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\d)\d{7}$";
NSString * CU = @"^1(3[0-2]|5[256]|8[56])\d{8}$";
NSString * CT = @"^1((33|53|8[09])[0-9]|349)\d{7}$";
// NSString * PHS = @"^0(10|2[0-5789]|\d{3})\d{7,8}$";
NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];
NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM];
NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU];
NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT];
BOOL res1 = [regextestmobile evaluateWithObject:self];
BOOL res2 = [regextestcm evaluateWithObject:self];
BOOL res3 = [regextestcu evaluateWithObject:self];
BOOL res4 = [regextestct evaluateWithObject:self];
if (res1 || res2 || res3 || res4 )
{
return YES;
}
else
{
return NO;
}
}