iOS 判断内容是否是中文,两种实现

时间:2022-01-11 23:41:21

用category实现

新建类别文件,代码

.h文件

#import <Foundation/Foundation.h>

@interface NSString (Valid)

- (BOOL)isChinese;

@end

.m文件

#import "NSString+Valid.h"

@implementation NSString (Valid)

- (BOOL)isChinese
{
NSString *match = @"(^[\u4e00-\u9fa5]+$)";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF matches %@", match];
return [predicate evaluateWithObject:self];
} @end

用法:

if ([self.usernameTextField.text isChinese]) {
// do
}

  

还有一种是直接写公用方法:

- (BOOL)isChinese:(NSString *)str
{
NSString *match = @"(^[\u4e00-\u9fa5]+$)";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF matches %@", match];
return [predicate evaluateWithObject:str];
}

  

  

全文结束~