ios 手势操作举例

#import "ViewController.h"@interface ViewController ()@property (weak, nonatomic) IBOutlet UIView *targetView;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    /*     UIGestureRecognizer     父类手势带给的东西     初始化方法：     - (instancetype)initWithTarget:(nullable id)target action:(nullable SEL)action NS_DESIGNATED_INITIALIZER;     给手势添加事件和移动事件     手势的状态     */    //添加单击手势    UITapGestureRecognizer *singleTap=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(singleTapAction:)];    [self.view addGestureRecognizer:singleTap];    //双击    UITapGestureRecognizer *doubleTap=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(doubleTapAction:)];    doubleTap.numberOfTouchesRequired=2;    [self.view addGestureRecognizer:doubleTap];    //单击要想执行必须双击失效    [singleTap requireGestureRecognizerToFail:doubleTap];    //长按手势，    UILongPressGestureRecognizer *longPress=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressAction:)];    [self.targetView addGestureRecognizer:longPress];    //捏合手势    UIPinchGestureRecognizer *pinchGesture=[[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(pinchGestureAction:)];    [self.targetView addGestureRecognizer:pinchGesture];    //拖拽    UIPanGestureRecognizer *panGesture=[[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(panAction:)];    [self.targetView addGestureRecognizer:panGesture];    //旋转    UIRotationGestureRecognizer *rotation=[[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(rotationAction:)];    [self.targetView addGestureRecognizer:rotation];    //旋转要想执行必须缩放失效    [pinchGesture requireGestureRecognizerToFail:rotation];    //左横扫    UISwipeGestureRecognizer *leftswipeGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(SwipeAction:)];    [self.view addGestureRecognizer:leftswipeGesture];    leftswipeGesture.direction=UISwipeGestureRecognizerDirectionLeft;    //右横扫    UISwipeGestureRecognizer *rightSwipeGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(SwipeAction:)];    [self.view addGestureRecognizer:rightSwipeGesture];    rightSwipeGesture.direction=UISwipeGestureRecognizerDirectionRight;    //上横扫    UISwipeGestureRecognizer *upswipeGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(SwipeAction:)];    [self.view addGestureRecognizer:upswipeGesture];    upswipeGesture.direction=UISwipeGestureRecognizerDirectionUp;    //下横扫    UISwipeGestureRecognizer *downSwipeGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(SwipeAction:)];    [self.view addGestureRecognizer:downSwipeGesture];    downSwipeGesture.direction=UISwipeGestureRecognizerDirectionDown;}//横扫-(void)SwipeAction:(UISwipeGestureRecognizer *)sender{    switch (sender.direction) {        case UISwipeGestureRecognizerDirectionRight://从右向左滑        {            CATransition *animation=[CATransition animation];//创建CATransition 对象            animation.delegate=self;  //动画代理            animation.duration=1.0f;//动画持续时间            animation.timingFunction=UIViewAnimationCurveEaseInOut;//速度控制函数，控制动画运行的节奏            animation.type=kCATransitionMoveIn;//设置运动type            animation.subtype=kCATransitionFromLeft;//视图向左滑            [sender.view.layer addAnimation:animation forKey:@"move in"];        }            break;        case UISwipeGestureRecognizerDirectionLeft://从左向右滑        {            CATransition *animation=[CATransition animation];            animation.delegate=self;            animation.duration=1.0f;            animation.timingFunction=UIViewAnimationCurveEaseInOut;            animation.type=kCATransitionMoveIn;            animation.subtype=kCATransitionFromRight;            [sender.view.layer addAnimation:animation forKey:@"move in"];        }            break;        case UISwipeGestureRecognizerDirectionDown://向下滑        {            CATransition *animation=[CATransition animation];            animation.delegate=self;            animation.duration=1.0f;            animation.timingFunction=UIViewAnimationCurveEaseInOut;            animation.type=kCATransitionMoveIn;            animation.subtype=kCATransitionFromBottom;            [sender.view.layer addAnimation:animation forKey:@"move in"];        }            break;        case UISwipeGestureRecognizerDirectionUp://向上滑        {            CATransition *animation=[CATransition animation];            animation.delegate=self;            animation.duration=1.0f;            animation.timingFunction=UIViewAnimationCurveEaseInOut;            animation.type=kCATransitionMoveIn;            animation.subtype=kCATransitionFromTop;            [sender.view.layer addAnimation:animation forKey:@"move in"];        }            break;        default:            break;    }}//旋转-(void)rotationAction:(UIRotationGestureRecognizer *)sender{    sender.view.transform = CGAffineTransformRotate(sender.view.transform, sender.rotation);    sender.rotation=10.0;//旋转速度}//拖拽-(void)panAction:(UIPanGestureRecognizer *)sender{   /* //当手势按在视图上面的点，转为父系坐标 拿到中心点    CGPoint translatedPoint=[sender translationInView:self.view];    CGFloat firstX;    CGFloat firstY;    if ([sender state]==UIGestureRecognizerStateBegan) {         firstX=[sender.view center].x;         firstY=[sender.view center].y;    }    translatedPoint=CGPointMake(firstX+translatedPoint.x, firstY+translatedPoint.y);    [sender.view setCenter:translatedPoint];*/    //中心拖拽   /* //当你的状态不等于结束状态，不等于失败状态    if (sender.state != UIGestureRecognizerStateEnded && sender.state != UIGestureRecognizerStateFailed) {        CGPoint location = [sender locationInView:sender.view.superview];        sender.view.center = location;    }*/    //视图前置操作    [sender.view.superview bringSubviewToFront:sender.view];    //拖拽    CGPoint center = sender.view.center;    CGFloat cornerRadius = sender.view.frame.size.width / 2;    CGPoint translation = [sender translationInView:self.view];    //NSLog(@"%@", NSStringFromCGPoint(translation));    sender.view.center = CGPointMake(center.x + translation.x, center.y + translation.y);    [sender setTranslation:CGPointZero inView:self.view];    //动画效果    if (sender.state == UIGestureRecognizerStateEnded) {        //计算速度向量的长度，当他小于200时，滑行会很短        CGPoint velocity = [sender velocityInView:self.view];        CGFloat magnitude = sqrtf((velocity.x * velocity.x) + (velocity.y * velocity.y));        CGFloat slideMult = magnitude / 200;        //NSLog(@"magnitude: %f, slideMult: %f", magnitude, slideMult); //e.g. 397.973175, slideMult: 1.989866        //基于速度和速度因素计算一个终点        float slideFactor = 0.1 * slideMult;        CGPoint finalPoint = CGPointMake(center.x + (velocity.x * slideFactor),                                         center.y + (velocity.y * slideFactor));        //限制最小［cornerRadius］和最大边界值［self.view.bounds.size.width - cornerRadius］，以免拖动出屏幕界限        finalPoint.x = MIN(MAX(finalPoint.x, cornerRadius),self.view.bounds.size.width - cornerRadius);        finalPoint.y = MIN(MAX(finalPoint.y, cornerRadius),self.view.bounds.size.height - cornerRadius);        //使用 UIView 动画使 view 滑行到终点        [UIView animateWithDuration:slideFactor*2 delay:0 options:UIViewAnimationOptionCurveEaseOut                         animations:^{                             sender.view.center = finalPoint;                         }                         completion:nil];    }}//缩放-(void)pinchGestureAction:(UIPinchGestureRecognizer *)sender{    NSLog(@"xxx");    sender.view.transform=CGAffineTransformMakeScale(sender.scale, sender.scale);}//长按-(void)longPressAction:(UILongPressGestureRecognizer *)sender{    //长按出现通知框 ios 9    if (sender.state==UIGestureRecognizerStateEnded) {        UIAlertController *alertController=[UIAlertController alertControllerWithTitle:@"标题" message:@"选择照片" preferredStyle:UIAlertControllerStyleActionSheet];        UIAlertAction *photoAction=[UIAlertAction actionWithTitle:@"拍照" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {            NSLog(@"调用照相机");        }];        [alertController addAction:photoAction];        UIAlertAction *libraryAction=[UIAlertAction actionWithTitle:@"相册" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {            NSLog(@"调用本地相册");        }];        [alertController addAction:libraryAction];        UIAlertAction *cancleAction=[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {            NSLog(@"取消");        }];        [alertController addAction:cancleAction];        [self presentViewController:alertController animated:YES completion:nil];    }}//单击-(void)singleTapAction:(UITapGestureRecognizer *)sender{    NSLog(@"你单了哈");    //改变背景颜色    if (sender.view.backgroundColor==[UIColor whiteColor]) {        sender.view.backgroundColor=[UIColor cyanColor];    }else{        sender.view.backgroundColor=[UIColor whiteColor];    }}//双击-(void)doubleTapAction:(UITapGestureRecognizer *)sender{    NSLog(@"双击");}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];}@end