iOS一些常用的工具类

工作中经常会用到的一些便捷方法，收藏以备不时之需。

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//获取当前时间戳有两种方法(以秒为单位)

//获取当前时间戳有两种方法(以秒为单位)

+(NSString*)getNowTimeTimestampWithNowDate:(NSDate*)nowDate{

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

    [formattersetDateStyle:NSDateFormatterMediumStyle];

    [formattersetTimeStyle:NSDateFormatterShortStyle];

    [formattersetDateFormat:@"YYYY-MM-dd HH:mm:ss"];

    NSTimeZone* timeZone = [NSTimeZone timeZoneWithName:@"Asia/BeiJing"];

    [formattersetTimeZone:timeZone];

//    NSDate *datenow = [NSDate date];//现在时间,你可以输出来看下是什么格式

    NSString *timeSp = [NSString stringWithFormat:@"%ld", (long)[nowDate timeIntervalSince1970]];

//    NSLog(@"-------------1111---timeSp:%@",timeSp); //时间戳的值时间戳转时间的方法

    returntimeSp;

}

---

//获取当前的时间

//获取当前的时间

+(NSString*)getCurrentTimesWithNowDate:(NSDate*)nowDate

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

    [formattersetDateFormat:@"YYYY-MM-dd HH:mm:ss"];

//    NSDate *datenow = [NSDate date];

        NSString*currentTimeString = [formatterstringFromDate:nowDate];

    returncurrentTimeString;

}

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//检查字符非空 nil null @“”

//检查字符非空 nil null @“”

+(BOOL)judgeBlankString:(NSString*)aStr {

    if(!aStr) {

        returnYES;

    }

    if ([aStr isKindOfClass:[NSNull class]]) {

        returnYES;

    }

    if(!aStr.length) {

        returnYES;

    }

    NSCharacterSet *set = [NSCharacterSet whitespaceAndNewlineCharacterSet];

    NSString *trimmedStr = [aStr stringByTrimmingCharactersInSet:set];

    if(!trimmedStr.length) {

        returnYES;

    }

    return NO;

}

---

//判断手机号码格式是否正确

//判断手机号码格式是否正确

+ (BOOL)judgeMobile:(NSString*)mobile{

    mobile = [mobilestringByReplacingOccurrencesOfString:@" " withString:@""];

    if(mobile.length!=11)

    {

        returnNO;

    }else{

        /**

         * 移动号段正则表达式

         */

        NSString *CM_NUM = @"^((13[4-9])|(147)|(15[0-2,7-9])|(178)|(18[2-4,7-8]))\\d{8}|(1705)\\d{7}$";

        /**

         * 联通号段正则表达式

         */

        NSString *CU_NUM = @"^((13[0-2])|(145)|(15[5-6])|(176)|(18[5,6]))\\d{8}|(1709)\\d{7}$";

        /**

         * 电信号段正则表达式

         */

        NSString *CT_NUM = @"^((133)|(153)|(177)|(18[0,1,9]))\\d{8}$";

        NSPredicate *pred1 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM_NUM];

        BOOLisMatch1 = [pred1evaluateWithObject:mobile];

        NSPredicate *pred2 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU_NUM];

        BOOLisMatch2 = [pred2evaluateWithObject:mobile];

        NSPredicate *pred3 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT_NUM];

        BOOLisMatch3 = [pred3evaluateWithObject:mobile];

        if(isMatch1 || isMatch2 || isMatch3) {

            returnYES;

        }else{

            returnNO;

        }

    }

}

---

/*限制输入数字*/

/*限制输入数字*/

+ (BOOL)validateNumber:(NSString*)number {

    BOOLres =YES;

    NSCharacterSet* tmpSet = [NSCharacterSet characterSetWithCharactersInString:@"0123456789"];

    inti =0;

    while(i < number.length) {

        NSString * string = [number substringWithRange:NSMakeRange(i, 1)];

        NSRangerange = [stringrangeOfCharacterFromSet:tmpSet];

        if(range.length==0) {

            res =NO;

            break;

        }

        i++;

    }

    returnres;

}

//正则判断全是数字

//正则判断全是数字

+(BOOL)judgeNumInputShouldNumber:(NSString*)str{

    if(str.length==0) {

        returnNO;

    }

    NSString*regex =@"[0-9]*";

    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];

    if([predevaluateWithObject:str]) {

        returnYES;

    }

    return NO;

}

/*过滤所有空格*/

/*过滤所有空格*/

+ (NSString*)stringContainCharactersInSet:(NSString*)str{

    NSString *topstr = [str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

    NSString *endStr = [topstr stringByReplacingOccurrencesOfString:@" " withString:@""];

    returnendStr;

}

/*过滤emoji*/

/*过滤emoji*/

+(BOOL)stringContainsEmoji:(NSString*)string

{

    // 过滤所有表情。returnValue为NO表示不含有表情，YES表示含有表情

    __blockBOOLreturnValue =NO;

    [stringenumerateSubstringsInRange:NSMakeRange(0, [string length]) options:NSStringEnumerationByComposedCharacterSequences usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {

        constunicharhs = [substringcharacterAtIndex:0];

        // surrogate pair

        if(0xd800<= hs && hs <=0xdbff) {

            if(substring.length>1) {

                constunicharls = [substringcharacterAtIndex:1];

                constintuc = ((hs -0xd800) *0x400) + (ls -0xdc00) +0x10000;

                if(0x1d000<= uc && uc <=0x1f77f) {

                    returnValue =YES;

                }

            }

        }elseif(substring.length>1) {

            constunicharls = [substringcharacterAtIndex:1];

            if(ls ==0x20e3) {

                returnValue =YES;

            }

        }else{

            // non surrogate

            if(0x2100<= hs && hs <=0x27ff) {

                returnValue =YES;

            }elseif(0x2B05<= hs && hs <=0x2b07) {

                returnValue =YES;

            }elseif(0x2934<= hs && hs <=0x2935) {

                returnValue =YES;

            }elseif(0x3297<= hs && hs <=0x3299) {

                returnValue =YES;

            }elseif(hs ==0xa9|| hs ==0xae|| hs ==0x303d|| hs ==0x3030|| hs ==0x2b55|| hs ==0x2b1c|| hs ==0x2b1b|| hs ==0x2b50) {

                returnValue =YES;

            }

        }

    }];

    returnreturnValue;

}

//过滤特殊字符

//过滤特殊字符

+ (NSString*)encodeToPercentEscapeString:(NSString*)input

{

    NSString*outputStr = (NSString*)

    CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,

                                                              (CFStringRef)input,

                                                              NULL,

                                                              (CFStringRef)@"!*'();:@&=+$,/?%#[]",

                                                              kCFStringEncodingUTF8));

    returnoutputStr;

}