IOS Carousel Diagram Implementation

#define Screen_size [UIScreen mainscreen].bounds.size
#define KIMAGECOUNT 3
#define KIMAGE_HEIGHT 250

@interface Viewcontroller () <UIScrollViewDelegate>
@property (nonatomic, Strong) Uiscrollview * ScrollView;
@property (nonatomic, Strong) Uipagecontrol * Pagecontrol;
@property (nonatomic, strong) Nstimer * timer;
@end

@implementation Viewcontroller
-(Uiscrollview *) scrollview{
if (_scrollview = = nil) {
_scrollview = [[Uiscrollview alloc] Initwithframe:cgrectmake (0, 0, Screen_size.width, kimage_height)];
_scrollview.pagingenabled = YES;
_scrollview.showshorizontalscrollindicator = NO;
}
return _scrollview;
}
-(Uipagecontrol *) pagecontrol{
if (_pagecontrol = = nil) {
_pagecontrol = [[Uipagecontrol alloc] Initwithframe:cgrectmake (0, self.scrollview.frame.size.height-30, SCREEN_ Size.width, 20)];
_pagecontrol.currentpageindicatortintcolor = [Uicolor colorwithred:65/255.0 green:168/255.0 blue:100/255.0 alpha:1.0 ];
_pagecontrol.pageindicatortintcolor = [Uicolor Graycolor];

}
return _pagecontrol;
}
-(void) setview{
[Self.view AddSubview:self.scrollView];
[Self.view AddSubview:self.pageControl];
CGFloat imagey = 0;
CGFloat Imagew = screen_size.width;
CGFloat Imageh = kimage_height;
for (int i = 0; i < Kimagecount; i++) {
Uiimageview * ImageView = [[Uiimageview alloc] Initwithframe:cgrectmake (i * imagew, Imagey, Imagew, Imageh)];
Imageview.image = [UIImage imagenamed:[nsstring stringwithformat:@ "%i.jpg", i+1]];
[Self.scrollview Addsubview:imageview];
}
Self.scrollView.contentSize = Cgsizemake (kimagecount * imagew, 0);
Self.scrollView.delegate = self;
Self.pageControl.numberOfPages = Kimagecount;
[Self addtimer];
}
-(void) AddTimer {
Self.timer = [Nstimer scheduledtimerwithtimeinterval:1.0 target:self selector: @selector (nextimage) Userinfo:nil Repeats:yes];
[[Nsrunloop Mainrunloop]addtimer:self.timer Formode:nsdefaultrunloopmode];
}
-(void) nextimage{
int i = (int) self.pageControl.currentPage;
if (i = = KImageCount-1) {
i =-1;
}
i++;
[Self.scrollview setcontentoffset:cgpointmake (i * self.scrollView.frame.size.width, 0) Animated:yes];
}
-(void) scrollviewwillbegindragging: (Uiscrollview *) scrollview{
[Self turnofftimer];
}
-(void) scrollviewdidenddragging: (Uiscrollview *) ScrollView willdecelerate: (BOOL) decelerate{
[Self addtimer];
}
-(void) turnofftimer{
[Self.timer invalidate];
Self.timer = nil;
}
-(void) Scrollviewdidscroll: (Uiscrollview *) scrollview{
Self.pageControl.currentPage = (Self.scrollView.frame.size.width * 0.5 + self.scrollview.contentoffset.x)/ Self.scrollView.frame.size.width;
}
-(void) Viewdidload {
[Super Viewdidload];
Self.title = @ "Carousel graph";
[Self setview];
}

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IOS Carousel Diagram Implementation