转：iPhone开辟之UIImageView阁下…

最新推荐文章于 2024-08-25 09:38:37 发布

tony_0620

最新推荐文章于 2024-08-25 09:38:37 发布

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本文介绍了一种通过触摸滑动实现图片轮播效果的方法，包括初始化视图控制器、配置图片数组、处理触摸事件以及动画效果的实现。

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高低划动可以用类似的办法实现：

＃import 




＠interface Abstruct : UIViewController {


    UIImageView* myimageview;


    NSMutableArray *imgArray;


    CGPoint FirstPoint;


    CGPoint SecondPoint;


    NSInteger Page;


    BOOL touchMove;


}


＠property （retain， nonatomic）  UIImageView* myimageview;


＠property （retain， nonatomic）  NSMutableArray *imgArray;


＠property NSInteger Page;



＠end

- （void）viewDidLoad


{


    


    [super viewDidLoad];




imgArray = [[NSMutableArray alloc] initWithObjects:


                [UIImage imageNamed:＠"01-01-1.jpg"]，


                [UIImage imageNamed:＠"01-01-2.jpg"]，


                [UIImage imageNamed:＠"01-01-3.jpg"]，


                [UIImage imageNamed:＠"01-01-4.jpg"]，


                [UIImage imageNamed:＠"01-01-5.jpg"]，


                [UIImage imageNamed:＠"01-01-6.jpg"]，


                [UIImage imageNamed:＠"01-01-7.jpg"]，nil]；


 self.navigationItem.title = [NSString stringWithFormat:＠"1/％d"，[imgArray count]];


     self.myimageview = [[UIImageView alloc] initWithFrame:CGRectMake（0， 44，768， 1004）];


    [self.myimageview setImage:[imgArray objectAtIndex:Page]];


    [self.view addSubview:myimageview];




}








- （void）touchesBegan:（NSSet *）touches withEvent:（UIEvent *）event {


    UITouch *touch = [[event allTouches] anyObject];


    CGPoint point = [touch locationInView:self.view];


    FirstPoint = point;


    touchMove = NO;


}



- （void）touchesMoved:（NSSet *）touches withEvent:（UIEvent *）event {


    UITouch *touch = [touches anyObject];


    CGPoint point = [touch locationInView:self.view];


    SecondPoint = point;


    touchMove = YES;


}



- （void）touchesEnded:（NSSet *）touches withEvent:（UIEvent *）event{


    


    if（touchMove == NO）


    {


    }else 


    {


        if （FirstPoint.x > SecondPoint.x）


        {


            if（Page < [imgArray count] - 1）


            {


                Page++;


                CGContextRef context = UIGraphicsGetCurrentContext（）;


                [UIView beginAnimations:nil context:context];


                [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];


                [myimageview setAlpha:0.0];


                [UIView setAnimationDuration:0.05];


                [UIView commitAnimations];


                [self performSelector:＠or（ChangeImage） withObject:nil afterDelay:0.1];


            }else if （Page == [imgArray count] -1） {


                CGContextRef context = UIGraphicsGetCurrentContext（）;


                [UIView beginAnimations:nil context:context];


                [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];


                [myimageview setAlpha:0.0];


                [UIView setAnimationDuration:0.05];


                [UIView commitAnimations];


                Page = 0;


                [self performSelector:＠or（ChangeImage） withObject:nil afterDelay:0.1];


            }


        }else {


            if（Page >= 1）


            {


                Page--;


                CGContextRef context = UIGraphicsGetCurrentContext（）;


                [UIView beginAnimations:nil context:context];


                [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];


                [myimageview setAlpha:0.0];


                [UIView setAnimationDuration:0.05];


                [UIView commitAnimations];


                [self performSelector:＠or（ChangeImage） withObject:nil afterDelay:0.1];


            }


        }    


    }    


}








-（void）ChangeImage{


    CGContextRef context = UIGraphicsGetCurrentContext（）;


    [UIView beginAnimations:nil context:context];


    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];


    [UIView setAnimationDuration:0.5]; //动画长度，单位为秒


    [self.view setAlpha:1];


    [myimageview setAlpha:1];


    [myimageview setImage:[imgArray objectAtIndex:Page]];


    //[myimageview setAnimationRepeatCount:4]; //设置反复次数


    [UIView commitAnimations];


    self.navigationItem.title = [NSString stringWithFormat:＠"％d/％d"，Page+1，[imgArray count]];


}





＠end