IOS中有三種方法來完成正則表達式的婚配。如今將他們都記載在這裡:
1.應用NSPredicate(謂詞)婚配
例如婚配有用郵箱:
NSString *email = @“[email protected]”; NSString *regex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; BOOL isValid = [predicate evaLuateWithObject:email];
謂詞婚配比擬靈巧,然則須要有謂詞的相干常識。
2.應用rangeOfString:option:直接查找
NSString *searchText = @"// Do any additional setup after loading the view, typically from a nib."; NSRange range = [searchText rangeOfString:@"(?:[^,])*\\." options:NSRegularExpressionSearch]; if (range.location != NSNotFound) { NSLog(@"%@", [searchText substringWithRange:range]); }
options中設定NSRegularExpressionSearch就是表現應用正則表達式婚配,會前往第一個婚配成果的地位。
3.應用正則表達式類
NSString *searchText = @"// Do any additional setup after loading the view, typically from a nib."; NSError *error = NULL; NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"(?:[^,])*\\." options:NSRegularExpressionCaseInsensitive error:&error]; NSTextCheckingResult *result = [regex firstMatchInString:searchText options:0 range:NSMakeRange(0, [searchText length])]; if (result) { NSLog(@"%@\n", [searchText substringWithRange:result.range]); }
實例:
1.驗證郵箱
+ (BOOL)validateEmail:(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]; }
NSPredicate是一個Foundation類,是用來查詢的,道理和用法都相似於SQL中的where。
2.驗證手機號
簡略的斷定辦法
+ (BOOL)validatePhone:(NSString *)phone { NSString *phoneRegex = @"1[3|5|7|8|][0-9]{9}"; NSPredicate *ph.netest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", phoneRegex]; return [ph.netest evaLuateWithObject:phone]; }
這只是簡略地斷定手機號格局。其實手機的格局照樣有一點龐雜的。
具體的斷定辦法
//正則斷定手機號碼格局 + (BOOL)validatePhone:(NSString *)phone { /** * 手機號碼 * 挪動:134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188 * 聯通:130,131,132,152,155,156,185,186 * 電信:133,1349,153,180,189 */ NSString * MOBILE = @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$"; /** * 中國挪動:China Mobile * 134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188 */ NSString * CM = @"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\d)\\d{7}$"; /** * 中國聯通:China Unicom * 130,131,132,152,155,156,185,186 */ NSString * CU = @"^1(3[0-2]|5[256]|8[56])\\d{8}$"; /** * 中國電信:China Telecom * 133,1349,153,180,189 */ NSString * CT = @"^1((33|53|8[09])[0-9]|349)\\d{7}$"; /** * 年夜海洋區固話及小閉塞 * 區號:010,020,021,022,023,024,025,027,028,029 * 號碼:七位或八位 */ // 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]; if (([regextestmobile evaluateWithObject:phone] == YES) || ([regextestcm evaluateWithObject:phone] == YES) || ([regextestct evaluateWithObject:phone] == YES) || ([regextestcu evaluateWithObject:phone] == YES)) { if([regextestcm evaluateWithObject:phone] == YES) { NSLog(@"China Mobile"); } else if([regextestct evaluateWithObject:phone] == YES) { NSLog(@"China Telecom"); } else if ([regextestcu evaluateWithObject:phone] == YES) { NSLog(@"China Unicom"); } else { NSLog(@"Unknow"); } return YES; } else { return NO; } }
【iOS App開辟中Objective-C應用正則表達式停止婚配的辦法】的相關資料介紹到這裡,希望對您有所幫助! 提示:不會對讀者因本文所帶來的任何損失負責。如果您支持就請把本站添加至收藏夾哦!