iphone - iPhone 中的 UIScrollView？

Question

我在 iPhone 应用程序中工作，使用 UIScrollView 设置水平，在 UIScrollView 中添加 5 个图像，并且工作正常。(我想在开放时间显示第二张图片)然后我尝试在屏幕显示时显示第二张图片。但是我尽力了，但是我没有那样做，请任何人帮助我

提前致谢

我试过这个:

 UIScrollView *scroll1 = [[UIScrollView alloc] initWithFrame:CGRectMake(10, 45, 300, 360)];
    scroll1.contentSize=CGSizeMake(2700, 360);
    [scroll1 setShowsHorizontalScrollIndicator:NO];
    scroll1.pagingEnabled=YES;
    [self.view addSubview:scroll1];

    UIImageView *SlideImage = [[UIImageView alloc]initWithFrame:CGRectMake(0,0, 300, 360)];
    SlideImage.image=[UIImage imageNamed:@"img1.png"];
    SlideImage.backgroundColor=[UIColor clearColor];
    [scroll1 addSubview:SlideImage];

    UIImageView *SlideImage1 = [[UIImageView alloc]initWithFrame:CGRectMake(300,0, 300, 360)];
    SlideImage1.image=[UIImage imageNamed:@"img2.png"];
    SlideImage1.backgroundColor=[UIColor clearColor];
    [scroll1 addSubview:SlideImage1];

    UIImageView *SlideImage2 = [[UIImageView alloc]initWithFrame:CGRectMake(600,0, 300, 360)];
    SlideImage2.image=[UIImage imageNamed:@"img3.png"];
    SlideImage2.backgroundColor=[UIColor clearColor];
    [scroll1 addSubview:SlideImage2];

    UIImageView *SlideImage3 = [[UIImageView alloc]initWithFrame:CGRectMake(900,0, 300, 360)];
    SlideImage3.image=[UIImage imageNamed:@"img4.png"];
    SlideImage3.backgroundColor=[UIColor clearColor];
    [scroll1 addSubview:SlideImage3];

    UIImageView *SlideImage4 = [[UIImageView alloc]initWithFrame:CGRectMake(1200,0, 300, 360)];
    SlideImage4.image=[UIImage imageNamed:@"img5.png"];
    SlideImage4.backgroundColor=[UIColor clearColor];
    [scroll1 addSubview:SlideImage4];

    UIImageView *SlideImage5 = [[UIImageView alloc]initWithFrame:CGRectMake(1500,0, 300, 360)];
    SlideImage5.image=[UIImage imageNamed:@"img6.png"];
    SlideImage5.backgroundColor=[UIColor clearColor];
    [scroll1 addSubview:SlideImage5];

Answer 1

试试这个

[scroll1 setContentOffset:CGPointMake(300, 0) animated:FALSE];