iOS中二进制数据转成字典

1.二进制数据转成字典

NSData *jsonData ；

NSDictionary *dicJson=[NSJSONSerializationJSONObjectWithData:jsonData options:NSJSONReadingMutableContainerserror:nil];

2.字典转成二进制数据

NSError *parseError = nil;

NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&parseError];

3二进制流转变为字符串

    NSString *str=[[NSMutableString alloc] initWithData:self.receive Dataencoding:NSUTF8StringEncoding];

  4  //把字符串再转变为二进制流

    self.receiveData=[NSMutableData dataWithData:[str dataUsingEncoding:NSUTF8StringEncoding]];