How can I use UIScrollView?

Question

How can I use UIScrollView? please give me a simple example with one scrolling image?

score 7 · Accepted Answer · edited May 23 '17 at 11:54

This will get you an insight of the UIScrollView control:

Learning the basics of UIScrollView

Referenced from UIScrollView Tutorials

Some good samples with the basic functionalities covered

Not to mention:

https://stackoverflow.com/search?q=UIScrollView

score 4 · Answer 2 · answered May 04 '11 at 12:58

4

This can be one example. Basically we create a scrollview, set its frame, add content as a subview, and then set the content size. The image (iphone.png) below is bigger than the iphone screen so that we can scroll it.

UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 20, 320, 460)];
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"iphone.png"]];

[scrollView addSubview:imageView];
[imageView release];
scrollView.contentSize = CGSizeMake(imageView.image.size.width, imageView.image.size.height);
[window addSubview:scrollView];
[scrollView release];

answered May 04 '11 at 12:58

Khomsan

543
5
5

what is this line done ? in my code it is generate the error for window word. [window addSubview:scrollView]; – M Faheem Rajput May 05 '11 at 05:57
I test by putting this code in didFinishLaunchingWithOptions above the [self.window makeKeyAndVisible], and it work fine. Actually window is the top window that is the parent of all view. I think you can put your parent view instead of window. – Khomsan May 05 '11 at 11:30
Sorry I forgot to answer. What this line done is adding a scrollview to its parent view. – Khomsan May 05 '11 at 11:40

score 1 · Answer 3 · answered May 04 '17 at 11:55

You can use below code to add UIScrollView on yourView :-

[self.ScrollView setContentSize:(CGSizeMake(self.view.frame.size.width, self.view.frame.size.height))];

Step:1 Create a UiScrollView,

@interface ViewController : UIViewController
@property (strong, nonatomic) IBOutlet UIScrollView *MyScrollView;
@end

Step2: In your ViewController.m,

[self.MyScrollView setContentSize:(CGSizeMake(self.view.frame.size.width, self.view.frame.size.height))];

score 0 · Answer 4 · answered May 04 '11 at 12:13

Add UIImageView in to UIScrollView.

then,

Use

imageView.image = [UIImage imageNamed:@"image1.png"];
imageView.frame = CGRectMake(0.0, 0.0, imageView.image.size.width, imageView.image.size.height);
scrollView.contentSize = CGSizeMake(imageView.image.size.width, imageView.image.size.height);

How can I use UIScrollView?

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