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