// 字典轉json字符串方法

-(NSString *)convertToJsonData:(NSDictionary *)dict
{
    NSError *error;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:&error];
    NSString *jsonString;
    if (!jsonData) {
        NSLog(@"%@",error);
    }else{
        jsonString = [[NSString alloc]initWithData:jsonData encoding:NSUTF8StringEncoding];
    }
    NSMutableString *mutStr = [NSMutableString stringWithString:jsonString];
    NSRange range = {0,jsonString.length};
    //去掉字符串中的空格
    [mutStr replaceOccurrencesOfString:@" " withString:@"" options:NSLiteralSearch range:range];
    NSRange range2 = {0,mutStr.length};
    //去掉字符串中的換行符
    [mutStr replaceOccurrencesOfString:@"\n" withString:@"" options:NSLiteralSearch range:range2];
    return mutStr;
}

// 數(shù)組轉json字符串方法

-(NSString *)convertToJsonDataWithArray:(NSArray *)array

{
    NSError *error;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:array options:NSJSONWritingPrettyPrinted error:&error];
    NSString *jsonString;
    if (!jsonData) {
        NSLog(@"%@",error);
    }else{
        jsonString = [[NSString alloc]initWithData:jsonData encoding:NSUTF8StringEncoding];
    }
    NSMutableString *mutStr = [NSMutableString stringWithString:jsonString];
    NSRange range = {0,jsonString.length};
    //去掉字符串中的空格
    [mutStr replaceOccurrencesOfString:@" " withString:@"" options:NSLiteralSearch range:range];
    NSRange range2 = {0,mutStr.length};
    //去掉字符串中的換行符
    [mutStr replaceOccurrencesOfString:@"\n" withString:@"" options:NSLiteralSearch range:range2];
    return mutStr;
}

//url轉uiimage獲取網(wǎng)絡圖片

-(UIImage *) getImageFromURL:(NSString *)fileURL {
    UIImage * result;
    NSData * data = [NSData dataWithContentsOfURL:[NSURL URLWithString:fileURL]];
    result = [UIImage imageWithData:data];
    return result;
 
}

//提取URl參數(shù)

-(NSDictionary *)dictionaryWithUrlString:(NSString *)urlStr
{
    if (urlStr && urlStr.length && [urlStr rangeOfString:@"?"].length == 1) {
        NSArray *array = [urlStr componentsSeparatedByString:@"?"];
        if (array && array.count == 2) {
            NSString *paramsStr = array[1];
            if (paramsStr.length) {
                NSMutableDictionary *paramsDict = [NSMutableDictionary dictionary];
                NSArray *paramArray = [paramsStr componentsSeparatedByString:@"&"];
                for (NSString *param in paramArray) {
                    if (param && param.length) {
                        NSArray *parArr = [param componentsSeparatedByString:@"="];
                        if (parArr.count == 2) {
                            [paramsDict setObject:parArr[1] forKey:parArr[0]];
                        }
                    }
                }
                return paramsDict;
            }else{
                return nil;
            }
        }else{
            return nil;
        }
    }else{
        return nil;
    }
}

//按指定尺寸比例壓縮圖片

-(UIImage *)compressImage:(UIImage *)image Width:(CGFloat)width{
    float scaleSize = image.size.height / image.size.width;
    if (width == 240) {
        UIGraphicsBeginImageContext(CGSizeMake(240,240 * scaleSize));
        [image drawInRect:CGRectMake(0, 0, 240, 240 * scaleSize)];
    }else if(width == 320){
        UIGraphicsBeginImageContext(CGSizeMake(320,320 * scaleSize));
        [image drawInRect:CGRectMake(0, 0, 320, 320 * scaleSize)];
    }else if(width == 200){
        UIGraphicsBeginImageContext(CGSizeMake(200,200 * scaleSize));
        [image drawInRect:CGRectMake(0, 0, 200, 200 * scaleSize)];
    }else{
        UIGraphicsBeginImageContext(CGSizeMake(720,720 * scaleSize));
        [image drawInRect:CGRectMake(0, 0, 720, 720 *scaleSize)];
    }
    UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return scaledImage;
}

//按系數(shù)壓縮圖片

- (UIImage*)imageCompressWithSimple:(UIImage*)image
{
   CGSize size = image.size;
   CGFloat scale = 1.0;
   //TODO:KScreenWidth屏幕寬
   
   CGFloat KScreenWidth = [UIScreen mainScreen].bounds.size.width;
   CGFloat KScreenHeight = [UIScreen mainScreen].bounds.size.height;
   
   if (size.width > KScreenWidth || size.height > KScreenHeight) {
       if (size.width > size.height) {
           scale = KScreenWidth / size.width;
       }else {
           scale = KScreenHeight / size.height;
       }
   }
   CGFloat width = size.width;
   CGFloat height = size.height;
   CGFloat scaledWidth = width * scale;
   CGFloat scaledHeight = height * scale;
   CGSize secSize =CGSizeMake(scaledWidth, scaledHeight);
   //TODO:設置新圖片的寬高
   UIGraphicsBeginImageContext(secSize); // this will crop
   [image drawInRect:CGRectMake(0,0,scaledWidth,scaledHeight)];
   UIImage* newImage= UIGraphicsGetImageFromCurrentImageContext();
   UIGraphicsEndImageContext();
   return newImage;
}

//色值轉換

-(UIColor*)toUIColorByStr:(NSString*)colorStr{
  NSString *cString = [[colorStr stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
if ([cString hasPrefix:@"#"]) cString = [cString substringFromIndex:1];
  if ([cString length] != 6) return [UIColor blackColor];
// Separate into r, g, b substrings
 NSRange range;
range.location = 0;
 range.length = 2;
 NSString *rString = [cString substringWithRange:range];
 range.location = 2;
  NSString *gString = [cString substringWithRange:range];
  range.location = 4;
  NSString *bString = [cString substringWithRange:range];
  // Scan values
  unsigned int r, g, b;
  [[NSScanner scannerWithString:rString] scanHexInt:&r];
  [[NSScanner scannerWithString:gString] scanHexInt:&g];
  [[NSScanner scannerWithString:bString] scanHexInt:&b];
  return [UIColor colorWithRed:((float) r / 255.0f) green:((float) g / 255.0f) blue:((float) b / 255.0f)  alpha:1.0f];

}

//json字符串轉字典

+ (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString
{
    if (jsonString == nil) {
        return nil;
    }
    NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
    NSError *err;
    NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:jsonData
                                                        options:NSJSONReadingMutableContainers
                                                          error:&err];
    if(err)
    {
        NSLog(@"json解析失旓踔亍：%@",err);
        return nil;
    }
    return dic;
}

// 圖片轉成base64字符串需要先取出所有空格和換行符

• (NSString *)removeSpaceAndNewline:(NSString *)str
  {
  NSString *temp = [str stringByReplacingOccurrencesOfString:@" " withString:@""];
  temp = [temp stringByReplacingOccurrencesOfString:@"\r" withString:@""];
  temp = [temp stringByReplacingOccurrencesOfString:@"\n" withString:@""];
  return temp;
  }
  //轉換為標準格式時間轉換str = @"yyyy-MM-dd"

-(NSString *)getTimeString:(NSString *)str
{
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:str];
    // 得到當前時間（世界標準時間 UTC/GMT）
    NSDate *nowDate = [NSDate date];
    NSString *nowDateString = [dateFormatter stringFromDate:nowDate];
    return nowDateString;
}