#import "ViewController.h"@interface ViewController ()@property (weak, nonatomic) IBOutlet UIImageView *imageView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.\
[self setUpPinch];
[self setUpRotation];
[self setUpPan];
}
#pragma mark - 手勢代理方法
// 是否允許開始觸發手勢
//- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
//{
// return NO;
//}
// 是否允許同時支持多個手勢，默認是不支持多個手勢
// 返回yes表示支持多個手勢
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return YES;
}
// 是否允許接收手指的觸摸點
//- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{
// // 獲取當前的觸摸點
// CGPoint curP = [touch locationInView:self.imageView];
//
// if (curP.x < self.imageView.bounds.size.width * 0.5) {
// return NO;
// }else{
// return YES;
// }
//}
1.#pragma mark - 點按手勢
- (void)setUpTap
{
// 創建點按手勢
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];
tap.delegate = self;
[_imageView addGestureRecognizer:tap];
}
- (void)tap:(UITapGestureRecognizer *)tap
{
NSLog(@"%s",__func__);
}
2.#pragma mark - 長按手勢
// 默認會觸發兩次
- (void)setUpLongPress
{
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
[self.imageView addGestureRecognizer:longPress];
}
- (void)longPress:(UILongPressGestureRecognizer *)longPress
{
if (longPress.state == UIGestureRecognizerStateBegan) {
NSLog(@"%s",__func__);
}
}
3.#pragma mark - 清掃
- (void)setUpSwipe
{
// 默認輕掃的方向是往右
UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe)];
swipe.direction = UISwipeGestureRecognizerDirectionUp;
[self.imageView addGestureRecognizer:swipe];
// 如果以后想要一個控件支持多個方向的輕掃，必須創建多個輕掃手勢，一個輕掃手勢只支持一個方向
// 默認輕掃的方向是往右
UISwipeGestureRecognizer *swipeDown = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe)];
swipeDown.direction = UISwipeGestureRecognizerDirectionDown;
[self.imageView addGestureRecognizer:swipeDown];
}
- (void)swipe
{
NSLog(@"%s",__func__);
}
4.#pragma mark - 旋轉手勢
- (void)setUpRotation
{
UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotation:)];
rotation.delegate = self;
[self.imageView addGestureRecognizer:rotation];
}
// 默認傳遞的旋轉的角度都是相對於最開始的位置
- (void)rotation:(UIRotationGestureRecognizer *)rotation
{
self.imageView.transform = CGAffineTransformRotate(self.imageView.transform, rotation.rotation);
// 復位
rotation.rotation = 0;
// 獲取手勢旋轉的角度
NSLog(@"%f",rotation.rotation);
}
5.#pragma mark - 捏合
- (void)setUpPinch
{
UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinch:)];
pinch.delegate = self;
[self.imageView addGestureRecognizer:pinch];
}
- (void)pinch:(UIPinchGestureRecognizer *)pinch
{
self.imageView.transform = CGAffineTransformScale(self.imageView.transform, pinch.scale, pinch.scale);
// 復位
pinch.scale = 1;
}
6.#pragma mark - 拖拽
- (void)setUpPan
{
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];
[self.imageView addGestureRecognizer:pan];
}
- (void)pan:(UIPanGestureRecognizer *)pan
{
// 獲取手勢的觸摸點
// CGPoint curP = [pan locationInView:self.imageView];
// 移動視圖
// 獲取手勢的移動，也是相對於最開始的位置
CGPoint transP = [pan translationInView:self.imageView];
self.imageView.transform = CGAffineTransformTranslate(self.imageView.transform, transP.x, transP.y);
// 復位
[pan setTranslation:CGPointZero inView:self.imageView];
// NSLog(@"%@",NSStringFromCGPoint(curP));
}