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];} 

输出：

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

来源： <http://set1.mail.qq.com/cgi-bin/readmail?folderid=3&folderkey=&t=readmail&mailid=ZC3417-eSXrkm6JbpSTCUMWz4cLE53&mode=pre&maxage=3600&base=12.969999999999998&ver=10000&sid=YDyNkW2yJN7WZC57>