UIScrollView, UIPageControl, uiscrollview

UIScrollView, UIPageControl, uiscrollview

 

 

 

# Import <UIKit/UIKit. h>

 

@ Interface ViewController: UIViewController <UIScrollViewDelegate>

 

 

@ End

 

# Import "ViewController. h"

 

@ Interface ViewController ()

 

@ End

 

@ Implementation ViewController

 

-(Void) viewDidLoad {

[Super viewDidLoad];

// Composition

// The above scrolview and addlable

// A pagecontrol in the middle

// The following myScrollview remove button

Self. view. backgroundColor = [UIColor greenColor];

/************** UIScrollView *********************** **********/

UIScrollView * scrolview = [[UIScrollView alloc] initWithFrame: CGRectMake (20, 20,280,180)]; // The height equals to the image height and the width is less than the Image Width

Scrolview. backgroundColor = [UIColor blueColor];

Scrolview. contentSize = CGSizeMake (770,180); // The valid display range is smaller than the image, and the image is not completely displayed.

UIImageView * imageview = [[UIImageView alloc] initWithFrame: CGRectMake (0, 0,770,180)];

Imageview. image = [UIImage imageNamed: @ "zhizhu"];

Imageview. backgroundColor = [UIColor yellowColor];

[Scrolview addSubview: imageview];

[Self. view addSubview: scrolview];

 

UILabel * addlable = [[UILabel alloc] initWithFrame: CGRectMake (310,150,160, 30)];

Addlable. text = @ "Ah, what a beautiful painting! ";

[Scrolview addSubview: addlable];

Scrolview. pagingEnabled = YES; // display results by PAGE

[Scrolview setContentOffset: CGPointMake (250, 0) animated: YES]; // scroll 300 pixels horizontally after loading

Scrolview. scrollEnabled = YES; // whether the attributes can be rolled

Scrolview. userInteractionEnabled = YES; // you can specify the interaction attribute.

Scrolview. showsHorizontalScrollIndicator = YES;

Scrolview. showsVerticalScrollIndicator = YES; // you can specify whether the scroll bar is displayed.

Scrolview. bounces = NO; // set the bounce effect of the Boundary. rolling to the boundary will not scroll.

// Add the following myScrollview

Int weigth = 700*280/1066;

UIScrollView * myScrollview = [[UIScrollView alloc] initWithFrame: CGRectMake (50,250, weigth, 280)]; // display the box size

MyScrollview. tag= 121;

MyScrollview. backgroundColor = [UIColor redColor];

MyScrollview. contentSize = CGSizeMake (weigth * 5,280); // valid display area

MyScrollview. delegate = self; // Add a proxy

// Add an image Group

For (int I = 0; I <5; I ++ ){

UIImageView * imageview1 = [[UIImageView alloc] initWithFrame: CGRectMake (weigth * I, 0, weigth, 280)];

NSString * imageName = [NSString stringWithFormat: @ "mongod.jpg", I + 1];

Imageview1.image = [UIImage imageNamed: imageName];

[MyScrollview addSubview: imageview1];

}

// Add a button on the last page

UIButton * remove = [UIButton buttonWithType: UIButtonTypeCustom];

Remove. frame = CGRectMake (weigth * 4 + (weigth-100)/2,220,100, 35); // set the button location that can be moved with the page

Remove. backgroundColor = [UIColor orangeColor];

[Remove setTitle: @ "start to experience" forState: UIControlStateNormal];

[Remove addTarget: self action: @ selector (doRemoveScrollView :) forControlEvents: UIControlEventTouchUpInside]; // Add an event

[MyScrollview addSubview: remove]; // Add button

MyScrollview. pagingEnabled = YES; // flip by PAGE

[Self. view addSubview: myScrollview];

// Add a pagecontrol point. Each point has a page number.

UIPageControl * pagecontrol = [[UIPageControl alloc] initWithFrame: CGRectMake (0,210,320, 30)];

Pagecontrol. tag= 122;

Pagecontrol. backgroundColor = [UIColor blueColor];

[Pagecontrol addTarget: self action: @ selector (pageControlSelector :) forControlEvents: UIControlEventValueChanged]; // Add an event

Pagecontrol. numberOfPages = 5; // control the number of displayed pages

Pagecontrol. currentPage = 0; // The default page number;

[Self. view addSubview: pagecontrol];

}

 

 

// The Position of the smallest vertex changes after each scrollView change

-(Void) scrollViewDidEndDecelerating :( UIScrollView *) scrollView

{

UIPageControl * pagec = (UIPageControl *) [self. view viewWithTag: 122];

CGPoint point1 = scrollView. contentOffset;

NSLog (@ "% f", (float) point1.x );

[Pagec setCurrentPage: point1.x/183];

}

// The scrollview changes after each pagecontrol change.

-(Void) pageControlSelector :( UIPageControl *) sender {

UIScrollView * getscroll = (UIScrollView *) [self. view viewWithTag: 121]; // get scrollview; know the rolling object

CGSize size = getscroll. frame. size;

CGRect reck1 = CGRectMake (sender. currentPage * size. width), 0, size. width, size. height );

[Getscroll scrollRectToVisible: reck1 animated: YES];

}

// Button Method

-(Void) doRemoveScrollView :( id) sender {

UIView * removeView = [self. view viewWithTag: 121];

[RemoveView removeFromSuperview];

}

-(Void) didReceiveMemoryWarning {

[Super didReceiveMemoryWarning];

 

 

}

 

@ End