在iOS 7 +中的Base64解码
我有编码的文本（ NSString ）使用NSData类新的API，这是在iOS7中添加。
使用这个
- (NSData *)dataUsingEncoding:(NSStringEncoding)encoding;
这是我的代码
NSString *base64EncodedString = [[myText dataUsingEncoding:NSUTF8StringEncoding] base64EncodedStringWithOptions:0]; NSLog(@"%@", base64EncodedString);
我正在寻找解码
Swift 3（iOS 10+）
let plainString = "foo"
编码
let plainData = plainString.data(using: .utf8) let base64String = plainData?.base64EncodedString() print(base64String!) // Zm9v
解码
if let decodedData = Data(base64Encoded: base64String!), let decodedString = String(data: decodedData, encoding: .utf8) { print(decodedString) // foo }
斯威夫特<3
let plainString = "foo"
编码
let plainData = plainString.dataUsingEncoding(NSUTF8StringEncoding) let base64String = plainData?.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0)) print(base64String!) // Zm9v
解码
let decodedData = NSData(base64EncodedString: base64String!, options: NSDataBase64DecodingOptions(rawValue: 0)) let decodedString = NSString(data: decodedData, encoding: NSUTF8StringEncoding) print(decodedString) // foo
Objective-C的
NSString *plainString = @"foo";
编码
NSData *plainData = [plainString dataUsingEncoding:NSUTF8StringEncoding]; NSString *base64String = [plainData base64EncodedStringWithOptions:0]; NSLog(@"%@", base64String); // Zm9v
解码
NSData *decodedData = [[NSData alloc] initWithBase64EncodedString:base64String options:0]; NSString *decodedString = [[NSString alloc] initWithData:decodedData encoding:NSUTF8StringEncoding]; NSLog(@"%@", decodedString); // foo
如果你想写回退代码，从NSURL注意一开始就已经出现在base64的解码：
NSURL *URL = [NSURL URLWithString: [NSString stringWithFormat:@"data:application/octet-stream;base64,%@", base64String]]; return [NSData dataWithContentsOfURL:URL];
