我正在为iOS开发一个ePub阅读器.我从服务器下载的ePub文件使用XOR算法加密.我将这些文件作为.xlsx格式用密钥解密.我正在解密并将文件加载到阅读器,如下所示:
我正在使用AePubReader加载文件.
这是解密代码:
- (NSData *)obfuscate:(NSData *)data withKey:(NSString *)key
{
NSMutableData *result = [data mutableCopy];
// Get pointer to data to obfuscate
char *dataPtr = (char *) [result mutableBytes];
// Get pointer to key data
char *keyData = (char *) [[key dataUsingEncoding:NSUTF8StringEncoding] bytes];
// Points to each char in sequence in the key
char *keyPtr = keyData;
int keyIndex = 0;
// For each character in data, xor with current value in key
for (int x …Run Code Online (Sandbox Code Playgroud) 我正在尝试将Eclipse中完成的项目导入Android Studio.导入时,我收到以下错误:
"There are unrecoverable errors which must be corrected first"
Library reference ../../../../workspace/android-support-v7-appcompat could not be found
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我尝试将appcompat文件夹复制到项目的根目录,仍然是同样的错误.我该如何解决?
有关详细信息,请参阅屏幕截图
我正在尝试使用robbiehanson XMPPframework创建聊天室.
由于我没有得到任何示例代码或文档,我自己尝试启动聊天室,如下所示:
XMPPRoomMemoryStorage *rosterstorage = [[XMPPRoomMemoryStorage alloc] init];
XMPPRoom *xmppRoom = [[XMPPRoom alloc] initWithRoomStorage:rosterstorage jid:[XMPPJID jidWithString:@"test@mycompany.com/room"] dispatchQueue:dispatch_get_main_queue()];
[xmppRoom configureRoomUsingOptions:nil];
[xmppRoom activate:[UIAppDelegate xmppStream]];
[xmppRoom addDelegate:UIAppDelegate
delegateQueue:dispatch_get_main_queue()];
[xmppRoom inviteUser:[XMPPJID jidWithString:jabberID] withMessage:@"Hi join room"];
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但我在控制台中收到的响应是:
RECV: <message xmlns="jabber:client" from="test@mycompany.com" to="user1@mycompany.com/42512304551337785705750233" type="error"><x xmlns="http://jabber.org/protocol/muc#user"><invite to="user2@mycompany.com"><reason>Hi join room</reason></invite></x><error code="503" type="cancel"><service-unavailable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/></error></message>
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有人有任何想法启动MUC ??有没有任何示例代码?任何帮助将不胜感激..谢谢提前..
我想定期将用户当前的纬度和经度发布到服务器.当应用程序运行前台时,正在进行正常运行.但是如果应用程序在后台运行,有没有办法做到这一点?