1.NSData和 base64 NSString的轉(zhuǎn)換
- NSString base64編碼后的轉(zhuǎn)NSData
NSData *contentData = [[NSData alloc] initWithBase64EncodedString:content options:NSDataBase64DecodingIgnoreUnknownCharacters];
2.NSData轉(zhuǎn)base64編碼的字符串
NSData *encrptedData
[encrptedData base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithLineFeed];
2. NSData和NSString轉(zhuǎn)換
1.NSString 轉(zhuǎn)NSData
NSData *contentData = [content dataUsingEncoding:NSUTF8StringEncoding];
2.NSData 轉(zhuǎn)NSString
NSString *con = [[NSString alloc] initWithData:encrptedData encoding:NSUTF8StringEncoding];
3.NSData和bytes的轉(zhuǎn)換
1.NSData 轉(zhuǎn)bytes
NSData *contentData
void const *initVectorBytes = contentData.bytes //void const *表示可以指向任何類型的指針
2.bytes轉(zhuǎn)NSData
[NSData dataWithBytes:operationBytes length:actualOutSize]
4.NSString和bytes的轉(zhuǎn)換
1.NSString轉(zhuǎn)bytes
void const *initVectorBytes = [kInitVector UTF8String];
2.bytes轉(zhuǎn)NSString
NSString *data = [NSString stringWithCString:contentBytes encoding:NSUTF8StringEncoding];
