五大手势的使用
2015-09-29 23:34 真实16 阅读(300) 评论(0) 编辑 收藏 举报tap（点击），loogPress（长按），Rotation（旋转），Pinch（捏合），swipe（轻扫），pan（拖拽）
*** 如果不响应手势，有以下几种原因
1、看是否添加到了ImageView 上，如果是把UserInteractionEnabled 设置成YES
2、查看是否设置 背景颜色，如果没有设置，设置背景颜色
3、手势的冲突，这时就需要设置手势的优先级，（截获触发事件，手势）设置优先级
**五大手势继承的父类：UIGestureRecognizer
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapAction:)];
// 设置点击手指的个数
tap.numberOfTouchesRequired = 1;
// numberOfTapsRequired 设置手指点击的次数
tap.numberOfTapsRequired = 1;
// addGestureRecognizer: 添加手势
[self.view addGestureRecognizer:tap];
#pragma mark--------------长按--------------------------
// 初始化
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress:)];
// 设置按下的最小持续时间 默认0.5s
longPress.minimumPressDuration = 1;
// longPress.numberOfTouchesRequired = 2;
// addGestureRecognizer: 把手势添加到某个视图上
[self.view addGestureRecognizer:longPress];
#pragma mark ---------拖拽-----------------
// 初始化
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(pan:)];
// minimumNumberOfTouches 设置最少的手指个数
pan.minimumNumberOfTouches = 2;
// maximumNumberOfTouches
[self.view addGestureRecognizer:pan];
#pragma mark-------------轻扫------------------------
// 初始化
UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(swipe:)];
// direction 设置轻扫的方向
swipe.direction = UISwipeGestureRecognizerDirectionLeft;
// 处理手势冲突的思想 ：谁的手势执行时间短就先执行谁 方法：requireGestureRecognizerToFail
// 需要轻扫手势 执行完之后 在去执行拖拽手势
[pan requireGestureRecognizerToFail/*处理拖拽和轻扫 两个手势冲突的方法*/:swipe/*先执行的*/];
[self.view addGestureRecognizer:swipe];
#pragma mark--------------捏合--------------------------
UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(pinch:)];
[self.view addGestureRecognizer:pinch];
#pragma mark---------------旋转-------------------------
UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(rotation:)];
[self.view addGestureRecognizer:rotation];
}
- (void)rotation:(UIRotationGestureRecognizer *)sender{
// 通过旋转手势 让图片进行相同的变形
imageView.transform = CGAffineTransformMakeRotation(sender.rotation);
}
- (void)pinch:(UIPinchGestureRecognizer *)sender{
// transform该变原来的形态 （如果不恢复它就一直以这个形态下去）与手势无关
// 通过手势 得到的 变化比例 让imageView的形态发生改变
imageView.transform = CGAffineTransformMakeScale(sender.scale, sender.scale);
// imageView.transform = CGAffineTransformScale(imageView.transform, sender.scale, sender.scale);
imageView.center = self.view.center;
}
- (void)swipe:(UISwipeGestureRecognizer *)sender{
self.view.frame = CGRectMake(CGRectGetWidth([UIScreen mainScreen].bounds), 0, CGRectGetWidth([UIScreen mainScreen].bounds), CGRectGetHeight([UIScreen mainScreen].bounds));
[UIView animateWithDuration:2 animations:^{
self.view.frame = CGRectMake(0, 0, CGRectGetWidth([UIScreen mainScreen].bounds), CGRectGetHeight([UIScreen mainScreen].bounds));
}];
NSLog(@"dsdb");
}
- (void)pan:(UIPanGestureRecognizer *)sender{
// locationInView: 获取点击的那个触摸点
CGPoint tapLoc = [sender locationInView:self.view];
NSLog(@"%f %f",tapLoc.x,tapLoc.y);
// 点击的位置设置成图片视图的这些点
imageView.center = tapLoc;
}
-(void)longPress:(UILongPressGestureRecognizer *)sender{
// locationInView: 获取点击的那个触摸点
CGPoint tapLoc = [sender locationInView:self.view];
NSLog(@"%f %f",tapLoc.x,tapLoc.y);
// 动画
[UIView animateWithDuration:0.2 animations:^{
// 点击的位置设置成图片视图的这些点
imageView.center = tapLoc;
}];
}
//单击手势的方法
- (void)tapAction:(UITapGestureRecognizer *)sender{
// 让视图恢复原来的形态
imageView.transform = CGAffineTransformIdentity;
// self.view.backgroundColor = [UIColor redColor];
// locationInView: 获取点击的那个点
CGPoint tapLoc = [sender locationInView:self.view];
NSLog(@"%f %f",tapLoc.x,tapLoc.y);
// 动画
[UIView animateWithDuration:1 animations:^{
// 点击的位置设置成图片视图的这些点
imageView.center = tapLoc;
}];
}
