数据转换工具.h文件

#define ZZDataShare [ZZDataTool sharedTool]

@interface ZZDataTool : NSObject

+ (instancetype)sharedTool;

#pragma mark - int 与 NSData 转换

//int转data

-(NSData *)intToData:(int)i;

//data转int

-(int)dataToInt:(NSData *)data;

#pragma mark - 字符串与NSData转换

//16进制数字字符串转,转NSData

- (NSData *)hexToBytes:(NSString *)str;

//普通字符串,转NSData

- (NSData *)stringToBytes:(NSString *)str;

//NSdata 转16进制普通字符串

- (NSString *)hexadecimalStringWithData:(NSData *)data;

- (NSString *)hexRepresentationWithSpaces_AS:(BOOL)spaces withData:(NSData *)data;

- (NSString *)hexRepresentationWithSymbol:(NSString *)symbol withData:(NSData *)data;

#pragma mark - 字符串与字符串之间转换

//十六进制数字字符串转换为10进制数字字符串的。

- (NSString *)hexNumberStringToNumberString:(NSString *)hexNumberString;

//十进制数字字符串转换为16进制数字字符串的。

- (NSString *)numberStringToHexNumberString:(NSString *)numberString;

// 十六进制转换为普通字符串的。

- (NSString *)stringFromHexString:(NSString *)hexString;

//普通字符串转换为十六进制的。

- (NSString *)hexStringFromString:(NSString *)string;

#pragma mark - Dictionary 转 Json String

-(NSString *)dictionaryToJsonStr:(id)dic;

@end

数据转换工具.m文件

#import "ZZDataTool.h"

@implementation ZZDataTool

+ (instancetype)sharedTool {

static id instance = nil;

static dispatch_once_t onceToken;

dispatch_once(&onceToken, ^{

instance = [[self alloc] init];

});

return instance;

}

#pragma mark - int 与 NSData 转换

//int转data

-(NSData *)intToData:(int)i{

NSData *data = [NSData dataWithBytes: &i length: sizeof(i)];

return data;

}

//data转int

-(int)dataToInt:(NSData *)data{

int i;

[data getBytes:&i length:sizeof(i)];

return i;

}

#pragma mark - 字符串与NSData转换

//16进制字符转(不带0x),转NSData

-(NSData *)hexToBytes:(NSString *)str{

NSMutableData * data = [NSMutableData data];

for (int i = 0; i+2 <= str.length; i+=2) {

NSString * subString = [str substringWithRange:NSMakeRange(i, 2)];

NSScanner * scanner = [NSScanner scannerWithString:subString];

uint number;

[scanner scanHexInt:&number];

[data appendBytes:&number length:1];

}

return data.copy;

}

//普通字符串,转NSData

- (NSData *)stringToBytes:(NSString *)str{

return [str dataUsingEncoding:NSASCIIStringEncoding];

}

//NSdata 转16进制字符串

- (NSString *)hexadecimalStringWithData:(NSData *)data

{

/* Returns hexadecimal string of NSData. Empty string if data is empty.  */

const unsigned char *dataBuffer = (const unsigned char *)[data bytes];

if (!dataBuffer)

{

return [NSString string];

}

NSUInteger          dataLength  = [data length];

NSMutableString    *hexString  = [NSMutableString stringWithCapacity:(dataLength * 2)];

for (int i = 0; i < dataLength; ++i)

{

[hexString appendFormat:@"%02x", (unsigned int)dataBuffer[i]];

}

return [NSString stringWithString:hexString];

}