iOS开发之Dictionary与NSData互转

1、将NSData转换成Dictionary

/** 将二进制数据转换成字典*/

+ (NSDictionary *)dictionaryForJsonData:(NSData *)jsonData

{

if (![jsonData isKindOfClass:[NSData class]] || jsonData.length < 1) {

return nil;

}

id jsonObj = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:nil];

if (![jsonObj isKindOfClass:[NSDictionary class]]) {

return nil;

}

return [NSDictionary dictionaryWithDictionary:(NSDictionary *)jsonObj];

}

2、将Dictionary转为NSData

/** 将字典转换成json格式字符串,不含\n这些符号*/

+ (NSData *)compactFormatDataForDictionary:(NSDictionary *)dicJson

{

if (![dicJson isKindOfClass:[NSDictionary class]]) {

return nil;

}

NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dicJson options:0 error:nil];

if (![jsonData isKindOfClass:[NSData class]]) {

return nil;

}

return jsonData;

}