[iOS] 檢查Email格式 (Check Email Format)
製作跟會員有關係的App，很常需要檢查Email格式 (Check Email Format)，儘管知道這跟正規語言(Regular Language)有關係，但還是請高手幫我寫規則吧ＸＤ～
/**
Theme: Check Email Format
IDE: Xcode 8
Language: Objective C
Date: 105/11/14
Author: HappyMan
Blog: https://cg2010studio.wordpress.com/
*/
-(BOOL)isValidEmail:(NSString *)checkString
{
BOOL stricterFilter = NO; // Discussion http://blog.logichigh.com/2010/09/02/validating-an-e-mail-address/
NSString *stricterFilterString = @"^[A-Z0-9a-z\\._%+-]+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2,4}$";
NSString *laxString = @"^.+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2}[A-Za-z]*$";
NSString *emailRegex = stricterFilter ? stricterFilterString : laxString;
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
return [emailTest evaluateWithObject:checkString];
}
以後直接來這裡複製貼上吧～
參考：Check that an email address is valid on iOS。
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