I have Encoded text(NSString) using NSData Class new API which is Added in iOS7.
using this
- (NSData *)dataUsingEncoding:(NSStringEncoding)encoding;
here is my code
NSString *base64EncodedString = [[myText dataUsingEncoding:NSUTF8StringEncoding] base64EncodedStringWithOptions:0];
NSLog(@"%@", base64EncodedString);
I am looking to decode it
let plainString = "foo"
let plainData = plainString.data(using: .utf8)
let base64String = plainData?.base64EncodedString()
print(base64String!) // Zm9v
if let decodedData = Data(base64Encoded: base64String!),
let decodedString = String(data: decodedData, encoding: .utf8) {
print(decodedString) // foo
}
let plainString = "foo"
let plainData = plainString.dataUsingEncoding(NSUTF8StringEncoding)
let base64String = plainData?.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
print(base64String!) // Zm9v
let decodedData = NSData(base64EncodedString: base64String!, options: NSDataBase64DecodingOptions(rawValue: 0))
let decodedString = NSString(data: decodedData, encoding: NSUTF8StringEncoding)
print(decodedString) // foo
NSString *plainString = @"foo";
NSData *plainData = [plainString dataUsingEncoding:NSUTF8StringEncoding];
NSString *base64String = [plainData base64EncodedStringWithOptions:0];
NSLog(@"%@", base64String); // Zm9v
NSData *decodedData = [[NSData alloc] initWithBase64EncodedString:base64String options:0];
NSString *decodedString = [[NSString alloc] initWithData:decodedData encoding:NSUTF8StringEncoding];
NSLog(@"%@", decodedString); // foo
kNilOptions is equal to 0 which is arguably more readable than using 0 for options.kNilOptions is defined in MacTypes.h which is a legacy OSX header, so I don't like using it, since I think that header should be removed from the iOS SDK altogether. Anyway, you have a point in saying that is very readable, so feel free to use it.
NSDataBase64DecodingOptions.IgnoreUnknownCharacters i had this issueIn case you want to write fallback code, decoding from base64 has been present in iOS since the very beginning by caveat of NSURL:
NSURL *URL = [NSURL URLWithString:
[NSString stringWithFormat:@"data:application/octet-stream;base64,%@",
base64String]];
return [NSData dataWithContentsOfURL:URL];
While decoding the base64String I was getting nil for using:
NSData *decodedData = [[NSData alloc] initWithBase64EncodedString:base64String options:0];
So, I used:
NSData *decodedData = [[NSData alloc] initWithBase64EncodedString:base64String options:NSDataBase64DecodingIgnoreUnknownCharacters];
And it worked for me.
m_EncodeText: please stopbase64EncodedStringWithOptions:?