Programmatically scroll a UIScrollView

I have a `UIScrollView` which has several views. When a user flicks their finger, the view scrolls to the right or left depending on the direction of the finger flick. Basically my code works in a way similar to the iPhone photo app. Now, is there a way that I can programmatically do the same thing so that I end up with a slideshow that runs on its own with a click of a button and a configurable pause between each scroll?

How do you really do slideshows with `UIScrollView`?

Another way is

scrollView.contentOffset = CGPointMake(x,y);

If you want control over the duration and style of the animation, you can do:

[UIView animateWithDuration:2.0f delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
scrollView.contentOffset = CGPointMake(x, y);
} completion:NULL];

Adjust the duration (`2.0f`) and options (`UIViewAnimationOptionCurveLinear`) to taste!

- (void)viewDidLoad
{
[super viewDidLoad];
board=[[UIView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.height, 80)];
board.backgroundColor=[UIColor greenColor];
[self.view addSubview:board];
// Do any additional setup after loading the view.
}


-(void)viewDidLayoutSubviews
{


NSString *str=@"ABCDEFGHIJKLMNOPQRSTUVWXYZ";

index=1;
for (int i=0; i<20; i++)
{
UILabel *lbl=[[UILabel alloc]initWithFrame:CGRectMake(-50, 15, 50, 50)];
lbl.tag=i+1;
lbl.text=[NSString stringWithFormat:@"%c",[str characterAtIndex:arc4random()%str.length]];
lbl.textColor=[UIColor darkGrayColor];
lbl.textAlignment=NSTextAlignmentCenter;
lbl.font=[UIFont systemFontOfSize:40];
lbl.layer.borderWidth=1;
lbl.layer.borderColor=[UIColor blackColor].CGColor;
[board addSubview:lbl];
}

[NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(CallAnimation) userInfo:nil repeats:YES];

NSLog(@"%d",[board subviews].count);
}


-(void)CallAnimation
{

if (index>20) {
index=1;
}
UIView *aView=[board viewWithTag:index];
[self doAnimation:aView];
index++;
NSLog(@"%d",index);
}

-(void)doAnimation:(UIView*)aView
{
[UIView animateWithDuration:10 delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
aView.frame=CGRectMake(self.view.frame.size.height, 15, 50, 50);
}
completion:^(BOOL isDone)
{
if (isDone) {
//do Somthing
aView.frame=CGRectMake(-50, 15, 50, 50);
}
}];
}

With Animation in Swift

scrollView.setContentOffset(CGPointMake(x, y), animated: true)

scrollView.setContentOffset(CGPoint(x: y, y: x), animated: true)

[Scrollview setContentOffset:CGPointMake(x, y) animated:YES];

You can scroll to some point in a scroll view with one of the following statements in Objective-C


[scrollView setContentOffset:CGPointMake(x, y) animated:YES];

or Swift

scrollView.setContentOffset(CGPoint(x: x, y: y), animated: true)

See the [guide "*Scrolling the Scroll View Content*" from Apple as well](

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).

To do slideshows with `UIScrollView`, you arrange all images in the scroll view, set up a repeated timer, then `-setContentOffset:animated:` when the timer fires.

But a more efficient approach is to use 2 image views and swap them using transitions or simply switching places when the timer fires. See

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for details.

I'm amazed that this topic is 9 years old and the actual straightforward answer is not here!

What you're looking for is `scrollRectToVisible(_:animated:)`.

Example:

```swift
extension SignUpView: UITextFieldDelegate {
func textFieldDidBeginEditing(_ textField: UITextField) {
scrollView.scrollRectToVisible(textField.frame, animated: true)
}
}
```

What it does is exactly what you need, and it's far better than hacky `contentOffset`

> This method scrolls the content view so that the area defined by rect
> is just visible inside the scroll view. If the area is already
> visible, the method does nothing.

From:

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Swift 3

let point = CGPoint(x: 0, y: 200) // 200 or any value you like.
scrollView.contentOffset = point