财务化显示textfield数字

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {//textfield代理方法（range返回的是当前输入或删除的字符）

    

    NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];

    
    NSString *originStr = [textField.text stringByReplacingOccurrencesOfString:@"," withString:@""];

    if ([string isEqualToString:@""]) {  //如果是删除的情况

        originStr = [originStr substringToIndex:originStr.length - 1];

    }

    originStr = [NSString stringWithFormat:@"%@%@",originStr,string];

    NSNumber *originNumber = [formatter numberFromString:originStr];

    

    formatter.numberStyle = NSNumberFormatterDecimalStyle;

    NSString *newStr = [formatter stringFromNumber:originNumber];

    textField.text = newStr;

    

    return NO;

}