iOS开发常用方法的封装

/**
 *  判断纯数字
 *
 *  @param string 参数
 *
 *  @return 结果bool
 */
- (BOOL)isPureInt:(NSString *)string {
    
    NSString *num = @"^[0-9]*$";
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", num];
    BOOL pure = [predicate evaluateWithObject:string];
    
    return pure;
}
/**
 *  中英文计算长度
 *
 *  @param strtemp
 *
 *  @return
 */
- (NSInteger)convertToInt:(NSString*)strtemp{
    
    NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000);
    NSData* data = [strtemp dataUsingEncoding:enc];
    NSUInteger length = [data length];
    
    return length;
}
/**
 获取当前时间
 */
- (NSString *)getCurrentDateStr{
    
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"YYYY-MM-dd hh:mm:ss"];
    NSString *dateString = [dateFormatter stringFromDate:[NSDate date]];
    
    return dateString;
}
/**
 * 获取当前语言环境 判断语言环境
 
 * @return
 */
- (NSString *)getCurrentLanguage{
    
    NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
    NSArray * allLanguages = [defaults objectForKey:@"AppleLanguages"];
    NSString * currentLanguage = [allLanguages objectAtIndex:0];
    
    return currentLanguage;
}
/**
 *  判断是否为空字符串
 *
 *  @param string 需要判断的字符串
 *
 *  @return 结果
 */
- (BOOL)isBlankString:(NSString *)string{
    
    if (string == nil || string == NULL) {
        return YES;
    }
    if ([string isKindOfClass:[NSNull class]]) {
        return YES;
    }
    if ([[string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] length]==0) {
        return YES;
    }
    return NO;
}
/**
 *  时间转string
 *
 *  @param date 需要转换的date
 *
 *  @return string
 */
- (NSString *)strFromDate:(NSDate *)date{
    
    NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm"];
    
    return [dateFormatter stringFromDate:date];
}
/**
 *  邮箱验证
 *
 *  @param email 邮箱
 *
 *  @return 结果
 */
- (BOOL)validateEmail:(NSString *)email{
    
    BOOL stricterFilter = NO;
    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:email];
}
//验证是否是正确的身份证号
- (BOOL)judgeIdentityStringValid:(NSString *)identityString {
    
    if (identityString.length != 18) return NO;
    //正则表达式判断基本身份证号是否满足格式
    NSString *regex2 = @"^(^[1-9]\\d{7}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])\\d{3}$)|(^[1-9]\\d{5}[1-9]\\d{3}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])((\\d{4})|\\d{3}[Xx])$)$";
    NSPredicate *identityStringPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
    //如果通过该验证，说明身份证格式正确，但准确性还需计算
    if(![identityStringPredicate evaluateWithObject:identityString]) return NO;
    
    //** 开始进行校验 *//
    
    //将前17位加权因子保存在数组里
    NSArray *idCardWiArray = @[@"7", @"9", @"10", @"5", @"8", @"4", @"2", @"1", @"6", @"3", @"7", @"9", @"10", @"5", @"8", @"4", @"2"];
    
    //这是除以11后，可能产生的11位余数、验证码，也保存成数组
    NSArray *idCardYArray = @[@"1", @"0", @"10", @"9", @"8", @"7", @"6", @"5", @"4", @"3", @"2"];
    
    //用来保存前17位各自乖以加权因子后的总和
    NSInteger idCardWiSum = 0;
    for(int i = 0;i < 17;i++) {
        NSInteger subStrIndex = [[identityString substringWithRange:NSMakeRange(i, 1)] integerValue];
        NSInteger idCardWiIndex = [[idCardWiArray objectAtIndex:i] integerValue];
        idCardWiSum+= subStrIndex * idCardWiIndex;
    }
    
    //计算出校验码所在数组的位置
    NSInteger idCardMod=idCardWiSum%11;
    //得到最后一位身份证号码
    NSString *idCardLast= [identityString substringWithRange:NSMakeRange(17, 1)];
    //如果等于2，则说明校验码是10，身份证号码最后一位应该是X
    if(idCardMod==2) {
        if(![idCardLast isEqualToString:@"X"]||[idCardLast isEqualToString:@"x"]) {
            return NO;
        }
    }
    else{
        //用计算出的验证码与最后一位身份证号码匹配，如果一致，说明通过，否则是无效的身份证号码
        if(![idCardLast isEqualToString: [idCardYArray objectAtIndex:idCardMod]]) {
            return NO;
        }
    }
    return YES;
}
/**
 *  密码验证
 *
 *  @param password 6-18 英文、数字
 *
 *  @return 结果
 */
- (BOOL)validatePassword:(NSString *)password{
    
    NSString * pattern = @"^[A-Za-z0-9]{6,18}$";
    NSPredicate *passwordTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", pattern];
    
    return [passwordTest evaluateWithObject:password];
}
/**
 *  通用类创建自定义button
 */
- (UIButton *)customCreateButtonType:(NSInteger)buttonType frame:(CGRect)rect addTarget:(nullable id)target  action:(SEL)action forControlEvents:(UIControlEvents)controlEvents tag:(NSInteger)tag{
    
    UIButton *button = [UIButton buttonWithType:buttonType];
    button.frame = rect;
    button.tag = tag;
    [button addTarget:target action:action forControlEvents:controlEvents];
    
    return button;
}
/**
 *  通用类创建普通textField
 */
- (UITextField *)customCreateTextFieldFrame:(CGRect)frame textAlignment:(NSTextAlignment)textAlignment placeholder:(NSString *)placehodler fontSize:(CGFloat)fontSize textColor: (UIColor *)textColor backgroundColor:(UIColor *)bgColor placeholderColor:(UIColor *)phColor keyboardAppearance:(UIKeyboardAppearance)appearance{
    
    UITextField *textField = [[UITextField alloc] initWithFrame:frame];
    textField.placeholder = placehodler;
    textField.textAlignment = textAlignment;
    [textField setValue:phColor
             forKeyPath:@"_placeholderLabel.textColor"];
    textField.font = [UIFont systemFontOfSize:fontSize];
    textField.textColor = textColor;
    textField.backgroundColor = bgColor;
    textField.keyboardAppearance = appearance;
    textField.autocorrectionType = UITextAutocorrectionTypeNo;
    
    return textField;
}
//颜色生成图片
- (UIImage*)createImageWithColor:(UIColor*)color{
    
    CGRect rect = CGRectMake(0.0f,0.0f,1.0f,1.0f);
    
    UIGraphicsBeginImageContext(rect.size);
    
    CGContextRef context = UIGraphicsGetCurrentContext();
    
    CGContextSetFillColorWithColor(context, [color CGColor]);
    
    CGContextFillRect(context, rect);
    
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    
    UIGraphicsEndImageContext();
    
    return image;
}