厦门谷歌推广/德州seo整站优化

首先新建一个基于Sigle view Application的项目，名为GestureTest;我的项目结构如下：

往viewController.xib文件里拖动一个imageView,并使覆盖整个屏幕，改动属性为：

viewController.h文件：

#import <UIKit/UIKit.h>@interface ViewController : UIViewController{IBOutlet UIImageView *imageView;
}
@property (nonatomic,retain)IBOutlet UIImageView *imageView;
@end

然后是viewController.m文件的实现部分：

@synthesize imageView;CGFloat lastScaleFactor=1;//放大、缩小
CGFloat  netRotation;//旋转
CGPoint netTranslation;//平衡
NSArray *images;//图片数组
int imageIndex=0;//数组下标- (void)viewDidLoad
{//1、创建手势实例，并连接方法handleTapGesture,点击手势UITapGestureRecognizer *tapGesture=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleTapGesture:)];//设置手势点击数,双击：点2下tapGesture.numberOfTapsRequired=2;// imageView添加手势识别[imageView addGestureRecognizer:tapGesture];//释放内存[tapGesture release];//2、手势为捏的姿势:按住option按钮配合鼠标来做这个动作在虚拟器上UIPinchGestureRecognizer *pinchGesture=[[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(handlePinchGesture:)];[imageView addGestureRecognizer:pinchGesture];//imageView添加手势识别[pinchGesture release];//3、旋转手势:按住option按钮配合鼠标来做这个动作在虚拟器上UIRotationGestureRecognizer *rotateGesture=[[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(handleRotateGesture:)];[imageView addGestureRecognizer:rotateGesture];[rotateGesture release];//4、拖手势UIPanGestureRecognizer *panGesture=[[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(handlePanGesture:)];// [imageView addGestureRecognizer:panGesture];[panGesture release];//5、划动手势images=[[NSArray alloc]initWithObjects:@"cell.jpg",@"heihua.jpg",@"xuanyi.jpg", nil];//右划UISwipeGestureRecognizer *swipeGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeGesture:)];[imageView addGestureRecognizer:swipeGesture];[swipeGesture release];//左划UISwipeGestureRecognizer *swipeLeftGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeGesture:)];swipeGesture.direction=UISwipeGestureRecognizerDirectionLeft;//不设置黑夜是右[imageView addGestureRecognizer:swipeLeftGesture];[swipeLeftGesture release];//6、长按手势UILongPressGestureRecognizer *longpressGesutre=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(handleLongpressGesture:)];//长按时间为1秒longpressGesutre.minimumPressDuration=1;//允许15秒中运动longpressGesutre.allowableMovement=15;//所需触摸1次longpressGesutre.numberOfTouchesRequired=1;[imageView addGestureRecognizer:longpressGesutre];[longpressGesutre release];[super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.
}
//双击屏幕时会调用此方法,放大和缩小图片
-(IBAction)handleTapGesture:(UIGestureRecognizer*)sender{//判断imageView的内容模式是否是UIViewContentModeScaleAspectFit,该模式是原比例，按照图片原时比例显示大小if(sender.view.contentMode==UIViewContentModeScaleAspectFit){//把imageView模式改成UIViewContentModeCenter，按照图片原先的大小显示中心的一部分在imageViewsender.view.contentMode=UIViewContentModeCenter;}else{sender.view.contentMode=UIViewContentModeScaleAspectFit;}
}
//捏的手势，使图片放大和缩小，捏的动作是一个连续的动作
-(IBAction)handlePinchGesture:(UIGestureRecognizer*)sender{//得到sender捏手势的大小CGFloat factor=[(UIPinchGestureRecognizer*)sender scale];if(factor>1){//图片放大sender.view.transform=CGAffineTransformMakeScale(lastScaleFactor+(factor-1), (lastScaleFactor+(factor-1)));}else{//缩小sender.view.transform=CGAffineTransformMakeScale(lastScaleFactor*factor, lastScaleFactor*factor);}//状态是否结束，如果结束保存数据if(sender.state==UIGestureRecognizerStateEnded){if(factor>1){lastScaleFactor+=(factor-1);}else{lastScaleFactor*=factor;}}
}
//旋转手势
-(IBAction)handleRotateGesture:(UIGestureRecognizer*)sender{//浮点类型，得到sender的旋转度数CGFloat rotation=[(UIRotationGestureRecognizer*)sender rotation];//旋转角度CGAffineTransformMakeRotationCGAffineTransform transform=CGAffineTransformMakeRotation(rotation+netRotation);//改变图像角度sender.view.transform=transform;//状态结束，保存数据if(sender.state==UIGestureRecognizerStateEnded){netRotation+=rotation;}}
//拖手势
-(IBAction)handlePanGesture:(UIGestureRecognizer*)sender{//得到拖的过程中的xy坐标CGPoint translation=[(UIPanGestureRecognizer*)sender translationInView:imageView];//平移图片CGAffineTransformMakeTranslationsender.view.transform=CGAffineTransformMakeTranslation(netTranslation.x+translation.x, netTranslation.y+translation.y);//状态结束，保存数据if(sender.state==UIGestureRecognizerStateEnded){netTranslation.x+=translation.x;netTranslation.y+=translation.y;}}
//划动手势
-(IBAction)handleSwipeGesture:(UIGestureRecognizer*)sender{//划动的方向UISwipeGestureRecognizerDirection direction=[(UISwipeGestureRecognizer*) sender direction];//判断是上下左右switch (direction) {case UISwipeGestureRecognizerDirectionUp:NSLog(@"up");break;case UISwipeGestureRecognizerDirectionDown:NSLog(@"down");break;case UISwipeGestureRecognizerDirectionLeft:NSLog(@"left");imageIndex++;//下标++break;case UISwipeGestureRecognizerDirectionRight:NSLog(@"right");imageIndex--;//下标--break;default:break;}//得到不越界不<0的下标imageIndex=(imageIndex<0)?([images count]-1):imageIndex%[images count];//imageView显示图片imageView.image=[UIImage imageNamed:[images objectAtIndex:imageIndex]];}
//长按手势
-(IBAction)handleLongpressGesture:(UIGestureRecognizer*)sender{//创建警告UIActionSheet *actionSheet=[[UIActionSheet alloc]initWithTitle:@"Image options" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:@"Save Image",@"Copy", nil];//当前view显示警告[actionSheet showInView:self.view];[actionSheet release];
}
-(void)dealloc{[images release];[imageView release];[super dealloc];
}

本博客是我自己的练习，有好多地方没有讲太清楚，还请谅解！