swift gbk NSData 转 NSString

iOS中,将NSData转NSString的一般方法为[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];但是当data中包含00时,所获得的新字符就会为nil,这时我们应该这样转 [NSString stringWithUTF8String:[data bytes]];

//    NSData  NSDate NSString NSArray NSDictionary json NSString *string = @"hello word"; NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding]; NSArray *array = [NSArray arrayWithObjects:@"1",@"2",@"3",nil

NSdata的概念 1.使用文件时需要频繁地将数据读入一个临时存储区,它通常称为缓冲区 2.NSdata类提供了一种简单的方式,它用来设置缓冲区,将文件的内容读入缓冲区,或者将缓冲区内容写到一个文件. 3.对于32位应用程序,NSdata缓存最多2GB 4.我们有两种定义 NSData(不可变缓冲区),NSMutableData(可变缓冲区) 上面的描述有点片面,再补充一些: NSData就是字节流的数据,它为字节流提供面向对象的存储空间,能够把一些字符串或图片等等一些非常复杂的数据类型转换成0

1. NSData 与 NSString NSData-> NSString NSString *aString = [[NSString alloc] initWithData:adataencoding:NSUTF8StringEncoding]; NSString->NSData NSString *aString = @"1234abcd"; NSData *aData = [aString dataUsingEncoding: NSUTF8StringEncodi

iOS 7: Base64 Encode and Decode NSData and NSString Objects FRI, JAN 24 CORE SERVICES TWEET With the release of iOS 7, Apple added support for encoding and decoding data using Base64. In this post we will walk through two examples using Base64 to enc

1,NSData 与 NSString NSData --> NSString NSString *aString = [[NSString alloc] initWithData:adata encoding:NSUTF8StringEncoding]; NSString --> NSData NSString *aString = @"1234"; NSData *aData = [aString dataUsingEncoding: NSUTF8StringEncod

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1.NSData与NSString NSData -> NSString NSString *aString = [[NSString alloc] initWithData:adata encoding:NSUTF8StringEncoding]; NSString->NSData NSString *aString = @"1234abcd"; NSData *aData = [aString dataUsingEncoding: NSUTF8StringEncodin

1. NSData 与 NSStringNSData-> NSStringNSString *aString = [[NSString alloc] initWithData:adata encoding:NSUTF8StringEncoding]; NSString->NSDataNSString *aString = @"1234abcd";NSData *aData = [aString dataUsingEncoding: NSUTF8StringEncoding]