获取view上点击的位置坐标
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
#pragma mark 获取现在的点击位置
UITouch *touch = [touches anyObject];
CGPoint touchPoint = [touch locationInView:self.view];
NSLog(@"x ===== %f y ===== %f",touchPoint.x,touchPoint.y);
// int x = (CGRectGetWidth(self.view.frame) - 26) / 2 + CGRectGetMinX(self.view.frame);
// int y = CGRectGetMinY(sender.frame) + CGRectGetMinY(_liveView.live_menu_panel.frame);
// [self beginAnimationWithX:touchPoint.x withY:touchPoint.y];
}
总结
@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imageView
sender.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CGAffineTransformMakeRotation
CGAffineTransform 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CGAffineTransformMakeTranslation
sender.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];
}
各手势的创建
#pragma mark 创建点击手势
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];
// 点击次数设置
tap.numberOfTapsRequired = 1;
// 触屏次数的设置
tap.numberOfTouchesRequired = 1;
// 添加点击手势
[self.view addGestureRecognizer:tap];
[tap release];
#pragma mark 创建平移手势
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];
[self.view addGestureRecognizer:pan];
[pan release];
#pragma mark 创建捏合手势
UIPinchGestureRecognizer *pinchGest = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinch:)];
[self.view addGestureRecognizer:pinchGest];
[pinchGest release];
#pragma mark 创建旋转手势
UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotation:)];
[self.view addGestureRecognizer:rotation];
[rotation release];
#pragma mark 创建轻扫手势，上下与左右两两分开能够全部实现
UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];
// 设置轻扫的方向
swipe.direction = UISwipeGestureRecognizerDirectionDown | UISwipeGestureRecognizerDirectionUp;
[self.view addGestureRecognizer:swipe];
[swipe release];
UISwipeGestureRecognizer *swipe1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];
swipe1.direction = UISwipeGestureRecognizerDirectionRight | UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:swipe1];
[swipe1 release];
各手势触发事件的实现
#pragma mark 轻扫事件实现
- (void)swipe:(UISwipeGestureRecognizer *)swipeGest {
NSLog(@"轻扫");
}
#pragma mark 旋转手势实现
- (void)rotation:(UIRotationGestureRecognizer *)rotationGest {
// 设置View的transform，来设置旋转
self.redView.transform = CGAffineTransformRotate(self.redView.transform, rotationGest.rotation);
// 设置转速
rotationGest.rotation = 1;
}
#pragma mark 捏合手势实现
- (void)pinch:(UIPinchGestureRecognizer *)pinchGest {
self.redView.transform = CGAffineTransformScale(self.redView.transform, pinchGest.scale, pinchGest.scale);
}
#pragma mark 平移手势实现
- (void)pan:(UIPanGestureRecognizer *)panGest {
// 如果触摸的是textField，执行方法
if (self.touchView == self.textField) {
CGPoint translation1 = [panGest translationInView:self.textField];
[panGest setTranslation:CGPointZero inView:self.textField];
self.textField.transform = CGAffineTransformTranslate(self.textField.transform, translation1.x, translation1.y);
// 如果触摸的是redView执行方法
}else if (self.touchView == self.redView) {
CGPoint translation = [panGest translationInView:self.redView];
[panGest setTranslation:CGPointZero inView:self.redView];
self.redView.transform = CGAffineTransformTranslate(self.redView.transform, translation.x, translation.y);
}
}
#pragma mark 点击事件收回键盘
- (void)tap:(UITapGestureRecognizer *)tapGest {
[self.view endEditing:YES];
}
在触摸屏时触发的各个事件
#pragma mark 触屏开始是触发事件_获取触屏开始时的点坐标
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
CGPoint startPoint = [[touches anyObject] locationInView:self];
self.startPoint = startPoint;
}
#pragma mark 在屏上移动时触发事件
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
// 让_target执行_action方法
[_target performSelector:_action withObject:self.redView];
// 设置代理方法
[_delegate changeColor:self.redView];
[_delegate changePosition:self.redView];
[_delegate changeColorAndPosition:self.redView];
// float red = (arc4random() % 256) / 255.0;
// float green = (arc4random() % 256) / 255.0;
// float blue = (arc4random() % 256) / 255.0;
//
// UIColor *randomColor = [UIColor colorWithRed:red green:green blue:blue alpha:0.8];
// self.redView.backgroundColor = randomColor;
// 获取触摸点
UITouch *touch = [touches anyObject];
// 移动前点击的点
CGPoint prePoint = [touch previousLocationInView:self];
// 现在的点击点
CGPoint nowPoint = [touch locationInView:self];
// 计算偏移量
float offSetx = nowPoint.x - prePoint.x;
float offSety = nowPoint.y - prePoint.y;
// 获取触摸的View
UIView *touchView = [touch view];
// 如果触摸的View为redView，则改变redView的偏移量
if (touchView == self.redView) {
CGPoint center = self.redView.center;
center.x += offSetx;
center.y += offSety;
self.redView.center = center;
}
}
#pragma mark 触屏结束时触发事件_模拟划屏手势
-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
// 获取触摸停止时的点坐标
CGPoint endPoint = [[touches anyObject] locationInView:self];
// 求出开始和结束时的坐标差
float dx = endPoint.x - self.startPoint.x;
float dy = endPoint.y - self.startPoint.y;
// 根据坐标差来实现屏的移动方向
if (dx > 50 && fabs(dy) <= 50) {
NSLog(@"向右");
}else if (dx < - 50 && fabs(dy) <= 50) {
NSLog(@"向左");
}else if (fabs(dx) <= 50 && dy > 50) {
NSLog(@"向下");
}else if (fabs(dx) <= 50 && dy < - 50) {
NSLog(@"向上");
}
}
#pragma mark 触屏取消时触发事件
-(void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {
}