Question

当我滚动内容时，如何设置背景图像保持固定在同一个地方。现在滚动内容意味着我的背景图像也保持移动背景图像也滚动，同时在UISCROLLVIEW滚动内容。我的示例代码发布在下面。

My Code here

    - (void)viewDidLoad
{
    NSLog(@"Welcome to Home Page");
    [super viewDidLoad];

   // self.view.backgroundColor=[[UIColor alloc]initWithPatternImage:[UIImage imageNamed:@"bg-image.png"]];

    UIImage * img = [UIImage imageNamed:@"bg-image.png"];
    [scrollView setBackgroundColor:[UIColor colorWithPatternImage:img]];
// Do any additional setup after loading the view, typically from a nib.
}



- (void)loadView {


    CGRect fullScreenRect=[[UIScreen mainScreen] applicationFrame];
    scrollView=[[UIScrollView alloc] initWithFrame:fullScreenRect];
    scrollView.contentSize=CGSizeMake(1400, 100);

    UIImageView *tempImageView2 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"sti01.png"]];
    tempImageView2.frame=CGRectMake(10, 60, 200, 200);
    [scrollView addSubview:tempImageView2];


    UIImageView *tempImageView3 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"sti02.png"]];
    tempImageView3.frame=CGRectMake(240, 60, 200, 200);
    [scrollView addSubview:tempImageView3];

    UIImageView *tempImageView4 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"sti03.png"]];
    tempImageView4.frame=CGRectMake(470, 60, 200, 200);
    [scrollView addSubview:tempImageView4];

    UIImageView *tempImageView5 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"sti04.png"]];
    tempImageView5.frame=CGRectMake(700, 60, 200, 200);
    [scrollView addSubview:tempImageView5];


    UIImageView *tempImageView6 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"sti05.png"]];
    tempImageView6.frame=CGRectMake(930, 60, 200, 200);
    [scrollView addSubview:tempImageView6];

    UIImageView *tempImageView7 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"sti06.png"]];
    tempImageView7.frame=CGRectMake(1160, 60, 200, 200);
    [scrollView addSubview:tempImageView7];



    self.view=scrollView;
    [scrollView addSubview:tempImageView2];
    [scrollView addSubview:tempImageView3];
    [scrollView addSubview:tempImageView4];
    [scrollView addSubview:tempImageView5];
    [scrollView addSubview:tempImageView6];
    [scrollView addSubview:tempImageView7];

    scrollView.userInteractionEnabled = YES;
    btn = [UIButton buttonWithType:UIButtonTypeCustom];
    btn.frame = CGRectMake(22, 100, 1800, 500);
   // [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [btn addTarget:self action:@selector(buttonTest:) forControlEvents:UIControlEventTouchUpInside];    
    [scrollView addSubview:btn];


}


- (IBAction)buttonTest:(id)sender {
    MSDescriptionpage *aSecondPageController = [[MSDescriptionpage  alloc] initWithNibName:@"MSDescriptionpage" bundle:nil];        
    [self.navigationController pushViewController:aSecondPageController animated:YES];        
    [aSecondPageController release];

}

Answer 1

它正在滚动，因为它是滚动视图的背景。所以当滚动移动时，背景会移动。您可以使滚动视图的背景透明（可能通过将背景颜色设置为[UIColor clearColor]并将opaque设置为NO），然后将视图放在具有相同框架的滚动视图后面。这不会随滚动视图移动。请记住，滚动视图会移动其内容，而不是自己。背景是该内容的一部分。

修改

改变这个：

- (void)viewDidLoad { NSLog(@"Welcome to Home Page"); [super viewDidLoad]; self.view.backgroundColor=[[UIColor alloc]initWithPatternImage:[UIImage imageNamed:@"bg-image.png"]]; UIImage * img = [UIImage imageNamed:@"bg-image.png"]; [scrollView setBackgroundColor:[UIColor colorWithPatternImage:img]]; // Do any additional setup after loading the view, typically from a nib. }

对此：

- (void)viewDidLoad { NSLog(@"Welcome to Home Page"); [super viewDidLoad]; self.view.backgroundColor=[[UIColor alloc]initWithPatternImage:[UIImage imageNamed:@"bg-image.png"]]; UIImage * img = [UIImage imageNamed:@"bg-image.png"]; [scrollView setBackgroundColor:[UIColor clearColor]]; // Do any additional setup after loading the view, typically from a nib. }

然后像：

UIView *customScrollBackground = [[UIView alloc] initWithFrame:scrollView.frame]; customScrollBackground.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"bg-image.png"]]; [customScrollBackground addSubview:scrollView];

在UISCROLLVIEW中滚动内容时，背景图像也会滚动

1 个答案: