這篇文章將為大家詳細講解有關(guān)IOS正則表達式判斷輸入類型,小編覺得挺實用的,因此分享給大家做個參考,希望大家閱讀完這篇文章后可以有所收獲。
創(chuàng)新互聯(lián)成立十多年來,這條路我們正越走越好,積累了技術(shù)與客戶資源,形成了良好的口碑。為客戶提供網(wǎng)站設(shè)計制作、成都網(wǎng)站制作、網(wǎng)站策劃、網(wǎng)頁設(shè)計、域名申請、網(wǎng)絡(luò)營銷、VI設(shè)計、網(wǎng)站改版、漏洞修補等服務(wù)。網(wǎng)站是否美觀、功能強大、用戶體驗好、性價比高、打開快等等,這些對于網(wǎng)站建設(shè)都非常重要,創(chuàng)新互聯(lián)通過對建站技術(shù)性的掌握、對創(chuàng)意設(shè)計的研究為客戶提供一站式互聯(lián)網(wǎng)解決方案,攜手廣大客戶,共同發(fā)展進步。在開發(fā)過程中,有時需要對用戶輸入的類型做判斷,最常見是在注冊頁面即用戶名和密碼,代碼整理如下:
只能為中文
-(BOOL)onlyInputChineseCharacters:(NSString*)string{ NSString *zhString = @"[\u4e00-\u9fa5]+"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",zhString]; BOOL inputString = [predicate evaluateWithObject:string]; return inputString; }
只能為數(shù)字
- (BOOL)onlyInputTheNumber:(NSString*)string{ NSString *numString =@"[0-9]*"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",numString]; BOOL inputString = [predicate evaluateWithObject:string]; return inputString; }
只能為小寫
- (BOOL)onlyInputLowercaseLetter:(NSString*)string{ NSString *regex =@"[a-z]*"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex]; BOOL inputString = [predicate evaluateWithObject:string]; return inputString; }
*只能為大寫
- (BOOL)onlyInputACapital:(NSString*)string{ NSString *regex =@"[A-Z]*"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex]; BOOL inputString = [predicate evaluateWithObject:string]; return inputString; }
允許大小寫
- (BOOL)InputCapitalAndLowercaseLetter:(NSString*)string{ NSString *regex =@"[a-zA-Z]*"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex]; BOOL inputString = [predicate evaluateWithObject:string]; return inputString; }
允許含大小寫或數(shù)字(不限字數(shù))
- (BOOL)inputLettersOrNumbers:(NSString*)string{ NSString *regex =@"[a-zA-Z0-9]*"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex]; BOOL inputString = [predicate evaluateWithObject:string]; return inputString; }
允許含大小寫或數(shù)字(限字數(shù))
-(BOOL)inputNumberOrLetters:(NSString*)name { NSString *userNameRegex = @"^[A-Za-z0-9]{6,20}+$"; NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex]; BOOL inputString = [userNamePredicate evaluateWithObject:name]; return inputString; }
允許漢字或數(shù)字(不限字數(shù))
- (BOOL)inputChineseOrNumbers:(NSString*)string{ NSString *regex =@"[\u4e00-\u9fa5]+[0-9]*"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex]; BOOL inputString = [predicate evaluateWithObject:string]; return inputString; }
允許漢字或數(shù)字(限字數(shù))
- (BOOL)inputChineseOrNumbersLimit:(NSString*)string{ NSString *regex =@"[\u4e00-\u9fa5][0-9]{6,20}+$"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex]; BOOL inputString = [predicate evaluateWithObject:string]; return inputString; }
允許漢字,大小寫或數(shù)字(不限字數(shù))
- (BOOL)inputChineseOrLettersAndNumbersNum:(NSString*)string{ NSString *regex =@"[\u4e00-\u9fa5]+[A-Za-z0-9]*"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex]; BOOL inputString = [predicate evaluateWithObject:string]; return inputString; }
允許漢字,大小寫或數(shù)字(限字數(shù))
- (BOOL)inputChineseOrLettersNumberslimit:(NSString*)string{ NSString *regex =@"[\u4e00-\u9fa5]+[A-Za-z0-9]{6,20}+$"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex]; BOOL inputString = [predicate evaluateWithObject:string]; return inputString; }
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