Iphone 在uiscroll视图中移动到请求的页面

我的滚动视图中有4个页面和4个按钮。如果用户按下第一个按钮，我想跳转到第1页，依此类推，剩下的三个按钮。我不知道怎么做

myview = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)];
[self.view addSubview:myview];

scroll1 = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
scroll1.pagingEnabled = NO;
NSInteger numberOfViews1 = 8;
float h = 0;
for (int i = 0; i < numberOfViews1; i++) {
    CGFloat xOrigin = i * self.view.frame.size.height;
    printf("%f\n",xOrigin);
    scrollview1 = [[UIView alloc] initWithFrame:CGRectMake(0,xOrigin, self.view.frame.size.width, self.view.frame.size.height)];
    scrollview1.backgroundColor = [UIColor colorWithRed:1-h green:1 blue:1 alpha:1];
    [scroll1 addSubview:scrollview1];
    [scrollview1 release];
    h = h + 0.2f;
}
scroll1.contentSize = CGSizeMake(self.view.frame.size.width, self.view.frame.size.height * numberOfViews1);
[self.view addSubview:scroll1];

myview=[[UIView alloc]initWithFrame:CGRectMake（0,0320480）]；
[self.view addSubview:myview]；
scroll1=[[UIScrollView alloc]initWithFrame:CGRectMake（0,0，self.view.frame.size.width，self.view.frame.size.height）]；
scroll1.PaginEnabled=否；
NSInteger numberOfViews1=8；
浮点数h=0；
对于（int i=0；i

使用scrollRectToVisible:animated：如果您知道scrollview中每个页面开始的y坐标