我正在关注Facebook的iOS tutorial for logging out。
我将教程的代码添加到了我的委托.m文件中。运行它,当我单击注销按钮时,它崩溃。我不知道错误是什么意思。日志窗口显示:
[S3DEngine_AppDelegate logoutButtonClicked]:无法识别的选择器已发送到实例0xb011dd0
我正在使用iPhone Simulator 5.0,XCode 4.2。
本教程中的区别在于我不使用applicationDidFinishLauchingWithOptions:
。我也尝试过此功能,但这是相同的错误。
谢谢你的帮助
- (void)applicationDidFinishLaunching:(UIApplication *)application
{
// Facebook
// Add the logout button
UIButton *logoutButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
logoutButton.frame = CGRectMake(40, 40, 200, 40);
[logoutButton setTitle:@"Log Out" forState:UIControlStateNormal];
[logoutButton addTarget:self action:@selector(logoutButtonClicked)
forControlEvents:UIControlEventTouchUpInside];
[self.viewController.view addSubview:logoutButton];
// Disable idle timer
//
[application setIdleTimerDisabled:YES] ;
// Configure and start the accelerometer
//
[[UIAccelerometer sharedAccelerometer] setUpdateInterval:kAccelerometerFrequency] ;
[[UIAccelerometer sharedAccelerometer] setDelegate:self] ;
// Create the view controller
//
[window addSubview:viewController.glView];
[window makeKeyAndVisible];
// Configure and start animation
//
viewController.glView.iAnimationInterval = kAnimationFrequency ;
[viewController.glView startAnimation];
// Configure ans start slpash view
//
CGRect frame = [[UIScreen mainScreen] bounds];
splashView = [[UIImageView alloc] initWithFrame:frame];
splashView.image = [UIImage imageNamed: @"Default.png"];
[window addSubview:splashView];
[window bringSubviewToFront:splashView];
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.5];
[UIView setAnimationTransition:UIViewAnimationTransitionNone forView:window cache:YES];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(startupAnimationDone:finished:context:)];
splashView.alpha = 0.0;
[UIView commitAnimations];
// Play default movie if any
//
[viewController.glView playDefaultMovieIfAny];
facebook = [[Facebook alloc] initWithAppId:@"105441111111111" andDelegate:self];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
if ([defaults objectForKey:@"FBAccessTokenKey"]
&& [defaults objectForKey:@"FBExpirationDateKey"])
{
facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"];
facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"];
}
if (![facebook isSessionValid])
{
[facebook authorize:nil];
}
}
- (void) logoutButtonClicked:(id)sender
{
[facebook logout];
}
- (void) fbDidLogout
{
// Remove saved authorization information if it exists
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
if ([defaults objectForKey:@"FBAccessTokenKey"]) {
[defaults removeObjectForKey:@"FBAccessTokenKey"];
[defaults removeObjectForKey:@"FBExpirationDateKey"];
[defaults synchronize];
}
}
最佳答案
像这样...
[logoutButton addTarget:self action:@selector(logoutButtonClicked:)
forControlEvents:UIControlEventTouchUpInside];
要么
- (void) logoutButtonClicked
{
[facebook logout];
}
关于iphone - 使用Facebook的官方iOS教程注销,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/9256007/