小编met*_*eth的帖子

NSData* jsonDataToSendTheServer;

NSDictionary *setUser = [NSDictionary
            dictionaryWithObjectsAndKeys:[@"u" stringByAppendingString:my.id],@"id",
                                        @"GET_USER_INFO",@"command",
                                        @"",@"value",
                                        nil];

 NSLog(@"%@", jsonDataToSendTheServer);

这是我的代码.当我运行上面的代码时,我得到了这个打印

<7b226964 223a2275 35383738 37373334 31222c22 636f6d6d 616e6422 3a224745 545f5553 45525f49 4e464f22 2c227661 6c756522 3a22227d>

我不知道我是否可以创建一个json.

我怎样才能解决这个问题？

我有几个嵌入在UINavigationController中的视图控制器(一些模态,一些模型),并使用滑动手势导航它们:

// Gesture recognizers
UISwipeGestureRecognizer *downGesture = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(dismissButton)];
downGesture.direction = UISwipeGestureRecognizerDirectionDown;
[downGesture setCancelsTouchesInView:NO];
[self.view addGestureRecognizer:downGesture];

这样可以正常工作,但是我希望用户能够物理地拖动模态显示的视图控制器,例如,向下和离开屏幕,而不仅仅是轻弹和动画完成剩下的工作,或者在屏幕上拖动并捕捉到上一个视图而不是点击后退按钮.

我已尝试在视图上使用平移手势实现此功能,但当然前面的视图控制器在它后面是不可见的,它需要它.这种效果如何正确实现？用视图控制器控制？如果是这样,当将几个视图控制器推送到堆栈时,它会如何工作？我正在谈论的导航类型的一个例子可以在LetterPress应用程序中找到.

谢谢.

我为我的应用程序制作了一个简单的照片幻灯片,问题是我的代码不再重复最后一张图像后的图像了!这是我的代码:

- (IBAction)start:(id)sender {

    _button.hidden = YES;
    [NSTimer scheduledTimerWithTimeInterval:2.0 target:self selector:@selector(photoCounter) userInfo:nil repeats:YES];


}


- (void)photoCounter {

    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.90];
    [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:NO];
    [self updatePhoto];
    imageCount ++;
    [UIView commitAnimations];

}

- (void)updatePhoto {

    switch (imageCount) {

        case 0:
            _images.image = [UIImage imageNamed:@"wall1.jpg"];
            break;

        case 1:
            _images.image = [UIImage imageNamed:@"wall2.jpg"];
            break;
        case 2:
            _images.image = [UIImage imageNamed:@"wall3.jpg"];
            break;
        case 3:
            _images.image = [UIImage imageNamed:@"wall4.jpg"];
            break;
        case 4:
            _images.image = [UIImage imageNamed:@"wall5.jpg"];
            break;

        default:
            break;
    }

}

我是iOS的新手,我想为我的应用程序登录facebook.

我用facebook的新ios sdk尝试了很多.但我得到错误.

代码是

-(IBAction)logIn:(id)sender;
{
    AppDelegate *appdelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];

    [appdelegate sessionOpener];
    FBRequest *me = [FBRequest requestForMe];
    [me startWithCompletionHandler: ^(FBRequestConnection *connection, 
                                      NSDictionary<FBGraphUser> *my,
                                      NSError *error) {
        NSLog(@"id %@", my.id);
        NSLog(@"name %@", my.first_name);


        greet.text = my.first_name;//this is a label to show the name
        user.userID = my.id;//this is a FBProfilePictureView to show 



    }];
    [UIView transitionFromView:self.view 
                        toView:userPage 
                      duration:0.5 
                       options:(UIViewAnimationOptionTransitionFlipFromRight | UIViewAnimationOptionTransitionFlipFromLeft)
                    completion:NULL];    }
`
and sessionOpener is;


    -(void) sessionOpener{
    [FBSession sessionOpenWithPermissions:nil 
                        completionHandler:^(FBSession *session, 
                                            FBSessionState status, 
                                            NSError *error) {
                            // session …

我有一个方法,不要使用ARC:

-(void)readAppPlist
{
    NSString *plistPath = [self getDataFileDestinationPath];
    NSData *plistXML = [[NSFileManager defaultManager] contentsAtPath:plistPath];
    NSString *errorDesc = nil;
    NSPropertyListFormat format;
    NSMutableDictionary *temp = (NSMutableDictionary *) [NSPropertyListSerialization propertyListFromData:plistXML mutabilityOption:NSPropertyListMutableContainersAndLeaves format:&format errorDescription:&errorDesc];
    if (!temp) {
        NSLog(@"Error reading plist: %@, formatL %d", errorDesc, format);
    }
    items = [[temp objectForKey:@"Items"] mutableCopy];
}

根据内存管理规则,我需要为变量plistPath,plistXML,errorDesc,temp释放内存？我应该另外一个方法,在这里发布它们或者只是将它们放入这个类的dealloc全局方法中吗？