使用GTMBase64编码解码字符串

#import "GTMBase64.h"

- (void)testExample

{

NSData *data = [@"HelloWorld" dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];

NSString* encoded = [[NSString alloc] initWithData:[GTMBase64 encodeData:data] encoding:NSUTF8StringEncoding];

NSLog(@"encoded:%@", encoded);

NSString* decoded = [[NSString alloc] initWithData:[GTMBase64 decodeString:encoded] encoding:NSUTF8StringEncoding];

NSLog(@"decoded:%@", decoded);

[encoded release];

[decoded release];

} 

2012-04-10 12:13:10.121 fs_test[7370:b603] encoded:SGVsbG9Xb3JsZA==

2012-04-10 12:13:10.122 fs_test[7370:b603] decoded:HelloWorld