UI 常用方法總結之---各個手勢種類 UIGestureRecognizer

手勢種類

UIGestureRecognizer : NSObject

1.- (void)addGestureRecognizer:(UIGestureRecognizer*)gestureRecognizer

附加一個手勢識別器到視圖。

一.點擊 tap

UITapGestureRecognizer : UIGestureRecognizer

1.創建一個UITapGestureRecognizer對象

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapAction:)];

2.numberOfTapsRequired

按幾次觸發

eg:tap.numberOfTapsRequired = 2;

3.numberOfTouchesRequired

幾根手指觸發

eg:tap.numberOfTouchesRequired = 2;

 

二.長按 longpress

UILongPressGestureRecognizer : UIGestureRecognizer

1.創建一個UILongPressGestureRecognizer對象

UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress:)];

2.minimumPressDuration

判定長按 需要的時間 默認爲0.5s

eg:longPress.minimumPressDuration = 1;

3.allowableMovement

允許長按過程中移動的像素 默認10

eg:longPress.allowableMovement = 100;

4.常用綁定方法

    if(longPress.state == UIGestureRecognizerStateBegan)

    {

        NSLog(@"長按");

    

    }

 

 

三.清掃 swipe

UISwipeGestureRecognizer : UIGestureRecognizer

 

1.創建一個UISwipeGestureRecognizer對象

UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(swipe:)];

2.direction

滑動方向

eg:swipe.direction = UISwipeGestureRecognizerDirectionLeft;

3.numberOfTouchesRequired

幾根手指觸發

 

 

 

四.旋轉 rotation

UIRotationGestureRecognizer : UIGestureRecognizer

1.創建一個UIRotationGestureRecognizer對象

UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(rotation:)];

2.rotation

旋轉速度

3.常用綁定方法

    NSLog(@"旋轉");

    //獲得當前手勢所在的view

    UIView *view = rotation.view;

    

    //transform屬性

    view.transform = CGAffineTransformRotate(view.transform, rotation.rotation);

 

    rotation.rotation = 0;

 

 

五.拖拽 pan

UIPanGestureRecognizer : UIGestureRecognizer

1.創建一個UIPanGestureRecognizer對象

UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(pan:)];

2.常用綁定方法

    NSLog(@"拖拽");

    CGPoint translation = [pan translationInView:self.view];

    UIView *view = pan.view;

    view.center = CGPointMake(view.center.x + translation.x, view.center.y + translation.y);

 

    [pan setTranslation:CGPointMake(0, 0) inView:self.view];

 

 

 

六.捏合 pinch

UIPinchGestureRecognizer : UIGestureRecognizer

1.創建一個UIPinchGestureRecognizer對象

UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(pinch:)];

2.常用綁定方法

    UIView *view = pinch.view;

 

    view.transform = CGAffineTransformScale(view.transform, pinch.scale, pinch.scale);

3.scale

比例

eg:pinch.scale = 1;

 

 

七.屏幕邊緣拖拽 screenEdgePan

UIScreenEdgePanGestureRecognizer : UIPanGestureRecognizer

1.創建一個UIScreenEdgePanGestureRecognizer對象

UIScreenEdgePanGestureRecognizer *screenEdgePan = [[UIScreenEdgePanGestureRecognizer alloc]initWithTarget:self action:@selector(screenEdgePan:)];