objective-c - uiscrollview 中的静态和动态对象

Question

我有一些问题。我想在滚动视图中显示静态和动态对象。我有 IBOutlets，它们是连接的。我想更改消息和标题，它们是在代码中手动创建的。所有其他对象都是静态的。我的代码在这里：

.h 文件：

@interface MessageContentViewController (){
    IBOutlet UIImageView  *avatarImageView;
    IBOutlet UIScrollView *scrollView;
    IBOutlet UIImageView  *msgBoardImg;
    IBOutlet UIImageView  *topBarImg;
    IBOutlet UIButton     *backBtn;
    NSMutableArray *allMessages;
}

@property int indexOfMsg;

@end

.m 文件：

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self.view setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"background.jpg"]]];

    [self.navigationController setNavigationBarHidden:YES animated:YES];
    [scrollView setContentSize:CGSizeMake(scrollView.frame.size.width * allMessages.count, 0)];
    [scrollView setPagingEnabled:YES];

    [scrollView scrollRectToVisible:CGRectMake(scrollView.frame.size.width * indexOfMsg, scrollView.frame.origin.y, scrollView.frame.size.width, scrollView.frame.size.height) animated:NO];
    for (int i = 0; i < allMessages.count; i++) {

        UIView *tempSubView = [[UIView alloc] initWithFrame:CGRectMake(self.view.frame.size.width * i, self.view.frame.origin.y, self.view.frame.size.width, self.view.frame.size.height)];
        [tempSubView addSubview:topBarImg];
        [tempSubView addSubview:backBtn];
        [tempSubView addSubview:msgBoardImg];
        [tempSubView addSubview:avatarImageView];
        [scrollView addSubview:tempSubView];
    }

    [scrollView setContentOffset: CGPointMake(scrollView.frame.size.width * indexOfMsg, 0)];

    CGRect currentViewFrame = CGRectMake(scrollView.frame.size.width * indexOfMsg, scrollView.frame.origin.y, scrollView.frame.size.width, scrollView.frame.size.height);
    [scrollView scrollRectToVisible:currentViewFrame animated:NO];

}

.xib 文件：

请帮我。提前致谢。

Answer 1

您应该实现滚动视图的委托方法scrollViewDidEndDecelerating:，您可以在其中检测滚动距离，然后为不同的滚动视图设置不同的标题和消息。