手势

一.手势

1.点击

UITapGestureRecognizer *tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction:)];

//设置点击几次才会触发方法

tap.numberOfTapsRequired=2;

//设置几根手指进行点击

//tap.numberOfTouchesRequired=2;

//将手势添加到对应的图片上

[self.imageView addGestureRecognizer:tap];

[tap release];

2.长按

UILongPressGestureRecognizer *longPress=[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressAction:)];

//设置长按触发的最小时间

longPress.minimumPressDuration=2;

//允许用户手指在长按过程种允许移动距离

longPress.allowableMovement=200;

//把手势添加到图片上

[self.imageView addGestureRecognizer:longPress];

[longPress release];

//创建一个旋转的手势

UIRotationGestureRecognizer *Rotation=[[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(RotionAction:)];

//把手势放到对应的图片上

[self.imageView addGestureRecognizer:Rotation];

//释放

[Rotation release];    

//4.捏合

//创建

UIPinchGestureRecognizer *pinch=[[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchAction:)];

//添加到图片上

[self.imageView addGestureRecognizer:pinch];

//释放

[pinch release]; 

//5.拖拽

//创建

UIPanGestureRecognizer *pan=[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panAction:)];

//添加

[self.imageView addGestureRecognizer:pan];

//释放

[pan release];  

//6.轻扫

 UISwipeGestureRecognizer *swipe=[[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeAction:)];

[self.imageView addGestureRecognizer:swipe];

[swipe release];

//轻扫的方向

//向右

swipe.direction=UISwipeGestureRecognizerDirectionRight;  

//7.屏幕边际手势,iOS7.0之后出现的手势UIScreenEdgePanGestureRecognizer

//#pragma mark 轻扫的对应方法

- (void)swipeAction:(UISwipeGestureRecognizer *)swipe{

  if(swipe.direction==UISwipeGestureRecognizerDirectionRight){

 NSLog(@"向右");}

}

#pragma mark 通过拖拽手势,让视图随着手势的移动而移动

- (void)panAction:(UIPanGestureRecognizer *)pan{

//通过手势找视图

UIImageView *imageView=(UIImageView *)pan.view;

//通过手势获得经过的点

CGPoint p=[pan translationInView:imageView];

//设置移动的位置

imageView.transform=CGAffineTransformTranslate(imageView.transform, p.x, p.y);

//为了防止手势在操作的时候视图消失

[pan setTranslation:CGPointZero inView:imageView];

}

//#pragma mark 通过捏合手势,缩放图片.

-(void)pinchAction:(UIPinchGestureRecognizer *)pinch{

//通过手势找视图

UIImageView *imageView=(UIImageView *)pinch.view;

//通过transform改变图片的尺寸

imageView.transform=CGAffineTransformScale(imageView.transform, pinch.scale, pinch.scale);

pinch.scale=1;

}

#pragma mark 通过图片的旋转手势,实现图片旋转方法

- (void)RotionAction:(UIRotationGestureRecognizer *)Rotation{   

//可以通过手势获取手势添加的视图是那一个

UIImageView *imageView=(UIImageView *)Rotation.view;

//进行旋转的操作

//通过视图的transform属性,让视图进行旋转

imageView.transform=CGAffineTransformRotate(imageView.transform, Rotation.rotation);

Rotation.rotation=0;

}

#pragma mark 点击方法

- (void)tapAction:(UITapGestureRecognizer *)tap;

{

self.imageView.image=[UIImage imageNamed:@"160.jpg"];

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

#pragma mark 长按对应的响应方法

- (void)longPressAction:(UILongPressGestureRecognizer *)longPress{

 //长按的状态

// longPress.state;

//长按之后弹出一个UIAlterView

if (self.alter==nil) {

self.alter=[[UIAlertView alloc] initWithTitle:@"消息提醒" message:@"恩恩" delegate:self cancelButtonTitle:@"cancle" otherButtonTitles:@"2",nil];

 [self.alter show];

[_alter release];

self.alter=nil;

}}