UIScrollView slide attempt, uiscrollview slide

UIScrollView slide attempt, uiscrollview slide

UIScrollView ---> UIView

// Create UIScrollView

TestScrollView = [[UIScrollView alloc] init];

TestScrollView. frame = CGRectMake (0, 0,320,200 );

TestScrollView. backgroundColor = [UIColor cyanColor];

// Set the capacity of UIScrollView

TestScrollView. contentSize = CGSizeMake (320*5,200 );

// Hide the horizontal indicator bar

TestScrollView. showsHorizontalScrollIndicator = NO;

// Hide the vertical indicator bar

TestScrollView. showsVerticalScrollIndicator = NO;

// Whether pagination is allowed. YES indicates that NO is allowed by default.

TestScrollView. pagingEnabled = YES;

// Set the edge animation effect to "NO". The default value is "Yes ".

TestScrollView. bounces = YES;

// Set proxy

TestScrollView. delegate = self;

// Display ScrollView

[Self. view addSubview: testScrollView];

 

// Create a UIPageControl, which is the count point in the image.

UIPageControl * page = [[UIPageControl alloc] initWithFrame: CGRectMake (110,130,100,100)];

// Page. backgroundColor = [UIColor redColor];

// Set the number of pages on the current page

Page. numberOfPages = 5;

// Set which page is displayed on the current page

Page. currentPage = 0;

// Set the color of the currently unselected middle page

Page. pageIndicatorTintColor = [UIColor yellowColor];

// Set the color of the selected page

Page. currentPageIndicatorTintColor = [UIColor redColor];

// Bind the UIPageControl Method

[Page addTarget: self action: @ selector (movePageControl :) forControlEvents: UIControlEventValueChanged];

// Create a timer

[NSTimer scheduledTimerWithTimeInterval: 1.0 target: self selector: @ selector (move) userInfo: nil repeats: YES];

}

// The static variable is executed only once.

Static int count =-1;

// Implementation Method

-(Void) move

{

If (page. currentPage = 4 | page. currentPage = 0 ){

Count =-count;

}

Page. currentPage = page. currentPage + count;

// Set the offset of each jump

TestScrollView. contentOffset = CGPointMake (page. currentPage * 320, 0 );

}

// Locate the offset

-(Void) movePageControl :( UIPageControl *) pageControl

{

// Set the offset to have no animation effect

// TestScrollView. contentOffset = CGPointMake (320 * page. currentPage, 0 );

// Sets the scrollView offset and uses the animation effect.

[TestScrollView setContentOffset: CGPointMake (pageControl. currentPage * 320, 0)];

NSLog (@ "% d", pageControl. currentPage );

}

# Pragma mark-

# Pragma mark-UIScrollViewDelegete

// Called when the image is being moved

-(Void) scrollViewDidScroll :( UIScrollView *) scrollView

{

NSLog (@ "called when the image is being moved ");

}

// It will be called once at the beginning of image Movement

-(Void) scrollViewWillBeginDragging :( UIScrollView *) scrollView

{

NSLog (@ "this is called once when the image is moved ");

}

// Called once when scrollView is released

-(Void) scrollViewWillBeginDecelerating :( UIScrollView *) scrollView

{

NSLog (@ "called once when scrollView is released ");

}

// Call scrollView once after sliding ends

-(Void) scrollViewDidEndDecelerating :( UIScrollView *) scrollView

{

NSLog (@ "scrollView sliding end call once ");

NSLog (@ "% f", scrollView. contentOffset. x );

 

Page. currentPage = scrollView. contentOffset. x/320;

}