UIKit 图片的移动、位移、旋转、缩放、翻转、翻页等特效的使用

UIKit 图片的移动、位移、旋转、缩放、翻转、翻页等特效的使用

OC的UIKit的框架，提供了许多对图片的出来函数，在这里只做几种简单的图片处理特效。

一边情况下 ，移动imageview 只需要改变它的frame属性，frame是CGRect结构体类型的，有 X，Y，W，H。改变他图片就会移动，而且还是做相应的缩放。为了添加渐变过程，就需要下面几个函数了。

[UIView beginAnimations:@"气球" context:@"移动"] ; //开始动画 两个参数是随便传的（因为到现在我也不知道 到底有什么用。）

[UIView setAnimationDuration:2] ;//动画在整个过程 持续 2秒

[UIView commitAnimations] ;// 提交动画 结束的意思。所有的动画操作都是在个函数之前完成的 。

CGAffineTransform aff ;

位移函数

aff = CGAffineTransformTranslate(imageView.transform, 20, 20) ；

旋转函数

CGAffineTransformRotate(imageView.transform, M_PI / 6) ;

缩放函数 1.2 ，1.2 为对imageView 放大 x y 分别放大 1.2倍。如果小于1 为缩小。

aff = CGAffineTransformScale(imageView.transform, 1.2, 1.2) ;

图片的左右翻转

[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:imageView cache:YES] ;

[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:imageView cache:YES] ;

图片的上下翻页特效

[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:imageView cache:YES] ;

[UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:imageView cache:YES] ;

去除所有的特效

CGAffineTransform aff = CGAffineTransformIdentity ;

下面是部分源码

UIViewController.h 文件

#import <UIKit/UIKit.h>@interface ViewController : UIViewController{    UIImageView *qq ,*bird;    BOOL type ;}@end

UIViewControll.h 文件

#import "ViewController.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad{    [super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.    qq = [[UIImageView alloc]initWithFrame:CGRectMake(20, 20, 166, 232)] ;    qq.image = [UIImage imageNamed:@"/2.png"] ;    [self.view addSubview:qq] ;        bird = [[UIImageView alloc] initWithFrame:CGRectMake(0, 100, 45, 36)];    bird.image = [UIImage imageNamed:@"/1.png"] ;        [qq addSubview:bird] ;            NSArray *btnName = [NSArray arrayWithObjects:@"移动",@"位移",@"旋转",@"放大",@"翻转",@"翻页",@"复原",nil] ;        for(int i =1; i< 8; i++)            {        UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect] ;        btn.tag = i ;                [btn setTitle:[btnName objectAtIndex:i-1] forState:UIControlStateNormal] ;                btn.frame = CGRectMake(255, 30+60*(i -1), 60, 30) ;        [self.view addSubview:btn] ;                [btn addTarget:self action:@selector(doMove:) forControlEvents:UIControlEventTouchUpInside] ;    }        type = YES ;        UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:@"正向",@"反向", nil]] ;    segment.frame = CGRectMake(80, 370, 100, 30) ;        segment.selectedSegmentIndex = 0 ;        [segment addTarget:self action:@selector(changeType) forControlEvents:UIControlEventValueChanged] ;    [self.view addSubview:segment] ;}-(void) changeType{    type = type?NO:YES ;}-(void)doMove:(UIButton*)sender{    [UIView beginAnimations:@"气球" context:@"移动"] ;    [UIView setAnimationDuration:2] ;        CGAffineTransform aff ;    switch (sender.tag)    {        case 1://移动改变位置和大小            if(type)                bird.frame = CGRectMake(150, 80, 80, 60) ;            else                bird.frame = CGRectMake(0, 100, 45, 36) ;             break;                    case 2://位移 ， 只 改变位置        {            [UIView setAnimationDuration:2] ;                        if(type)                                aff = CGAffineTransformTranslate(qq.transform, 20, 20) ;                        else                               aff = CGAffineTransformTranslate(qq.transform, -20, -20) ;                        [qq setTransform:aff] ;        }                        break;        case 3://旋转        {            if(type)                                aff = CGAffineTransformRotate(qq.transform, M_PI / 6) ;            else                aff = CGAffineTransformRotate(qq.transform, -M_PI / 6) ;            [qq setTransform:aff] ;        }            break;        case 4:// 缩放 ,倍数 大于 1 即放大 小于 1 缩小        {            if(type)                                aff = CGAffineTransformScale(qq.transform, 1.2, 1.2) ;            else                aff = CGAffineTransformScale(qq.transform, 1/1.2, 1/1.2) ;            [qq setTransform:aff] ;                }            break;        case 5:// 翻转            if(type)                                [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:qq cache:YES] ;            else                [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:qq cache:YES] ;                        break;        case 6://翻页            if(type)                [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:qq cache:YES] ;            else                [UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:qq cache:YES] ;            break;        case 7:        {            CGAffineTransform aff = CGAffineTransformIdentity ;            [qq setTransform:aff] ;            bird.frame = CGRectMake(0, 100, 45, 36) ;        }            break;                    default:            break;    }    [UIView commitAnimations] ;}

2013-7-20  北京 石景山区