iOS一些自己常用的工具方法

在这里记录下 我开发中常用的一些工具方法：

/**
 *  将字符串进行百分号编码
 *
 *  @param str 目标字符串
 *
 *  @return 经过百分号编码后的字符串
 */
+(NSString *)string2percentEncode:(NSString*)str{
    return  [str stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
}

/**
 *  截取任意两个字符之间的字符串
 *
 *  @param startRange 第一个条件字符串
 *  @param endRange   第二个条件字符串
 *  @param string     目标字符串
 *
 *  @return 截取任意两个字符之间字符串
 */
+(NSString*)stringCutOffWithstartRange:(NSString *)startRange endRange:(NSString *)endRange andStr:(NSString *)string{
    NSRange start = [string rangeOfString:startRange];
    NSRange end = [string rangeOfString:endRange];
    NSRange range = NSMakeRange(start.location + start.length, end.location - start.location - start.length);
    return [string substringWithRange:range];
}

/**
 *  判断字符串是不是全是空格
 *
 *  @param string 目标字符串
 *
 *  @return 返回是与否
 */
+ (BOOL)allSpace:(NSString *)string {
    BOOL isAllSapce = NO;
    // 获取被空格分割后是空的字符串的个数
    NSInteger number = 0;
    NSArray *array = [string componentsSeparatedByString:@" "];
    for (NSString *str in array) {
        if ([str isEqualToString:@""]) {
            number++;
        }
    }
    // 如果空的字符串的个数等于 string.length+1，就说明全部是空格
    if (number == string.length+1) {
        isAllSapce = YES;
    }
    return isAllSapce;
}

/**
 *  将汉字转化成拼音
 *
 *  @param chinese 中文
 *
 *  @return 小写拼音
 */
+ (NSString *)transform:(NSString *)chinese{
    NSMutableString *pinyin = [chinese mutableCopy];
    CFStringTransform((__bridge CFMutableStringRef)pinyin, NULL, kCFStringTransformMandarinLatin, NO);
    CFStringTransform((__bridge CFMutableStringRef)pinyin, NULL, kCFStringTransformStripCombiningMarks, NO);
    return pinyin;
}

/**
 *  将字符串中的空格去掉再输出
 *
 *  @param chinese 目标字符串
 *
 *  @return 转换后的字符串
 */
+ (NSString *)deleteSpacesInString:(NSString *)string{
    if ([string containsString:@" "]) {
        return [string stringByReplacingOccurrencesOfString:@" " withString:@""];
    } else {
        return string;
    }
}

/**
 *  判断字符串中是否包含数字
 *
 *  @param chinese 目标字符串
 *
 *  @return 包含-->YES   不包含-->NO
 */
+(BOOL)isStringContainNumberWith:(NSString *)str{
    NSRegularExpression *numberRegular = [NSRegularExpression regularExpressionWithPattern:@"[0-9]" options:NSRegularExpressionCaseInsensitive error:nil];
    NSInteger count = [numberRegular numberOfMatchesInString:str options:NSMatchingReportProgress range:NSMakeRange(0, str.length)];
    //count是str中包含[0-9]数字的个数，只要count>0，说明str中包含数字
    if (count > 0) {
        return YES;
    }
    return NO;
}

/**
 *  从字符串中拿到第一组数字
 *
 *  @param chinese 目标字符串
 *
 *  @return 返回数字字符串
 */
+ (NSString *)getNumFromString:(NSString *)string{
    //如果不包含数字 直接原样返回
    if (![HJTStringTool isStringContainNumberWith:string]) {
        return string;
    }
    NSScanner *scanner = [NSScanner scannerWithString:string];
    [scanner scanUpToCharactersFromSet:[NSCharacterSet decimalDigitCharacterSet] intoString:nil];
    int number;
    [scanner scanInt:&number];
    NSString *num=[NSString stringWithFormat:@"%d",number];
    return num;
}

/**
 处理含有emoji编码的的字符串
 
 @param string 目标字符串
 @return 返回带有emoji表情的字符串
 */
+ (NSString*)unmaskEmoji:(NSString *)string{
    
    NSRegularExpression *regularExpression = [NSRegularExpression regularExpressionWithPattern:
                                              @"\\[emoji:\\w{8}\\]"
                                                                                       options:0 error:nil];
    
    NSArray * a = [regularExpression matchesInString:string options:0 range:NSMakeRange(0, string.length)];
    NSString *resultString = string;
    for (int i = a.count - 1; i >= 0; i --) {
        NSTextCheckingResult *result = a[i];
        
        NSRange range = NSMakeRange(result.range.location+7, result.range.length-8);
        NSString *test = [string substringWithRange:range];
        test = [self convertString2Unicode:test];
        resultString = [resultString stringByReplacingCharactersInRange:result.range withString:test];
    }
    return resultString;
}


+ (NSString * )convertString2Unicode:(NSString *)input{
    if (input.length && input.length == 8) {
        
        unsigned short one = strtoul([[input substringWithRange:NSMakeRange(0, 4)] UTF8String],0,16);
        unsigned short two = strtoul([[input substringWithRange:NSMakeRange(4, 4)] UTF8String],0,16);
        
        return  [NSString stringWithFormat:@"%C%C",one,two];
        
    }else{
        return input;
    }
}

/**
 将JSON字符串转化为字典
 
 @param JSONString 目标字符串
 @return 字典
 */
+(NSDictionary *)parseJSONStringToNSDictionary:(NSString *)JSONString {
    NSData *JSONData = [JSONString dataUsingEncoding:NSUTF8StringEncoding];
    NSDictionary *responseJSON = [NSJSONSerialization JSONObjectWithData:JSONData options:NSJSONReadingMutableLeaves error:nil];
    return responseJSON;
}

//取消执行某个操作
[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(autoHiddenNavAndBottom) object:nil];

//适配iOS10字体变大的缘故
#define IOS_VERSION_10_OR_LATER (([[[UIDevice currentDevice]systemVersion]floatValue]>=10.0)? (YES):(NO))

#define DPAdapationLabelFont(n) (IOS_VERSION_10_OR_LATER?((n-1)*([[UIScreen mainScreen]bounds].size.width/375.0f)):(n*([[UIScreen mainScreen]bounds].size.width/375.0f)))