NSString常用的分类方法

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NSString常用的分类方法做一个简单的总结不定时更新

category我已经做了封装上传到了GitHub如果有需要的可以直接使用
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1.判断手机号

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-(BOOL)wj_isVAlidPhoneNumber
{
    NSString *regex = @"^(13|15|17|18|14)\\d{9}$";
    NSPredicate * pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
    BOOL isMatch =[pred evaluateWithObject:self];
    return isMatch;
}

2.判断邮箱

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-(BOOL)wj_isValidEmail
{
    NSString *regex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
    NSPredicate *emailTestPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
    return [emailTestPredicate evaluateWithObject:self];
}

3.判断是否是URL

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-(BOOL)wj_isValidUrl
{
    NSString *regex =@"[a-zA-z]+://[^\\s]*";
    NSPredicate *urlTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
    return [urlTest evaluateWithObject:self];
}

4.判断是否是空字符

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- (BOOL)wj_isBlankString{
    if (!self) {
        return YES;
    }
    if ([self isKindOfClass:[NSNull class]]) {
        return YES;
    }
    if (!self.length) {
        return YES;
    }
    NSCharacterSet *set = [NSCharacterSet whitespaceAndNewlineCharacterSet];
    NSString *trimmedStr = [self stringByTrimmingCharactersInSet:set];
    if (!trimmedStr.length) {
        return YES;
    }
    return NO;
}

5.判断密码是否是6-18位并且含数字跟字母

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-(BOOL)wj_isPassword {
    NSString * regex = @"^[A-Za-z0-9_]{6,18}$";
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
    return [pred evaluateWithObject:self];
}

6.字符串转NSData

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-(NSData *)wj_convertToData
{
    return [self dataUsingEncoding:NSUTF8StringEncoding];
}

7.NSData转字符串

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+(NSString *)wj_getStringFromData:(NSData *)data
{
    return [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}

8.时间戳转时间

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-(NSDate *)wj_dateValueWithMillisecondsSince1970 {
    return [NSDate dateWithTimeIntervalSince1970:[self doubleValue] / 1000];
}

9.计算属性字符文本占用的宽高

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   @param font    显示的字体
   @param maxSize 最大的显示范围
   @param lineSpacing 行间距
   @return 占用的宽高
-(CGSize)wj_attrStrSizeWithFont:(UIFont *)font andmaxSize:(CGSize)maxSize lineSpacing:(CGFloat)lineSpacing{  
    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
    [paragraphStyle setLineSpacing:lineSpacing];
    NSDictionary *dict = @{NSFontAttributeName: font,
                           NSParagraphStyleAttributeName: paragraphStyle};
    CGSize sizeToFit = [self boundingRectWithSize:maxSize // 用于计算文本绘制时占据的矩形块
    options:NSStringDrawingTruncatesLastVisibleLine |NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading // 文本绘制时的附加选项
    attributes:dict        // 文字的属性
    context:nil].size; // context上下文。包括一些信息，例如如何调整字间距以及缩放。该对象包含的信息将用于文本绘制。该参数可为nil
    return sizeToFit;
}

10.获取系统版本号

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+(NSString *)wj_getMyApplicationVersion
{
    NSDictionary *info = [[NSBundle mainBundle] infoDictionary];
    NSString *shortVersion = [info objectForKey:@"CFBundleShortVersionString"];
    return [NSString stringWithFormat:@"%@", shortVersion];
}

11. 获取APP的名字

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+(NSString *)wj_getMyApplicationName
{
    NSDictionary *info = [[NSBundle mainBundle] infoDictionary];
//    NSString *name = [info  objectForKey:@"CFBundleDisplayName"];
//    return [NSString stringWithFormat:@"%@", name];
    return [info objectForKey:@"CFBundleDisplayName"];
}

12.获取手机名称

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+(NSString *)wj_getMyPhoneName
{
    return [[UIDevice currentDevice] name];
}

13. 获取设备名称

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+(NSString *)wj_getMyDeviceName
{
    return [[UIDevice currentDevice] systemName];
}