手勢與觸控，手勢觸控

手勢與觸控，手勢觸控

 UIImageView *imgView=[[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 75, 75)];

    imgView.image=[UIImage imageNamed:@"a"];

    imgView.tag=200;

    [self.view addSubview:imgView];

    

    //設定允許觸控和執行手勢

    imgView.userInteractionEnabled=YES;

    

    //建立點選手勢

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

    //將建立的點選手勢添加到圖片對象

    [imgView addGestureRecognizer:tap];

    

    

    //建立拖拽手勢

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

    [imgView addGestureRecognizer:pan];

    

    

    //建立長按手勢

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

    [imgView addGestureRecognizer:longPress];

    

    

    //建立旋轉手勢

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

    [imgView addGestureRecognizer:rotate];

    

    

    

    //建立捏合手勢

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

    //捏合手勢可以與其他手勢同時執行

    pinch.delegate=self;

    [imgView addGestureRecognizer:pinch];

    

    

    //建立橫掃和縱掃手勢

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

    hs.direction=UISwipeGestureRecognizerDirectionLeft|UISwipeGestureRecognizerDirectionRight;

    [self.view addGestureRecognizer:hs];

    

    

    

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

    vs.direction=UISwipeGestureRecognizerDirectionDown|UISwipeGestureRecognizerDirectionUp;

    [self.view addGestureRecognizer:vs];

    

    

    

    

}

-(void)vsClick:(UISwipeGestureRecognizer *)vs

{

    NSLog(@"縱掃");

}

 

 

-(void)hsClick:(UISwipeGestureRecognizer *)hs

{

    NSLog(@"橫掃");

}

 

 

 

//當執行捏合手勢時調用該方法

-(void)pinchGestureClick:(UIPinchGestureRecognizer *)pinch

{

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

    [pinch setScale:1];

    

 

}

 

 

 

 

//當執行旋轉手勢時調用該方法

-(void)rotateGestureClick:(UIRotationGestureRecognizer *)rotate

{

    //roate.rotation手指的旋轉弧度

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

    //保持圖片和手指為相同弧度

    [rotate setRotation:0];

}

 

 

 

 

//當執行長按時調用該方法

//參數名稱.view為被添加手勢的對象

-(void)longPressGestureClick:(UILongPressGestureRecognizer*)loginPress

{

    loginPress.view.center=self.view.center;

}

 

 

 

//當執行拖拽手勢時執行該方法

-(void)panGestureClick:(UIPanGestureRecognizer*)pan

{

    //pan.view為手指點擊的對象

    pan.view.center= [pan locationInView:self.view];

}

 

 

 

 

 

//參數為圖片的手勢類型

-(void)tapGestureClick:(UITapGestureRecognizer *)tap

{

    NSLog(@"tap");

}

- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

 

//return YES，允許添加手勢的對象多個手勢同時執行  

//遵守UIGestureRecognizerDelegate協議

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer

{

    return YES;

}

 (觸控)

 

//添加圖片到頁面上

    UIImageView *imgView=[[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 75, 75)];

    imgView.image=[UIImage imageNamed:@"a"];

    [self.view addSubview:imgView];

    imgView.tag=100;

    //允許當前螢幕支援多點觸控

    self.view.multipleTouchEnabled=YES;

    //允許圖片對象支援手勢與觸控

    imgView.userInteractionEnabled=YES;

    

    

    

    //設定導航條右側按鈕

    UIBarButtonItem *rightBtn=[[UIBarButtonItem alloc]initWithTitle:@"Next" style:UIBarButtonItemStylePlain target:self action:@selector(rightBtnClick:)];

    self.navigationItem.rightBarButtonItem=rightBtn;

    

}

 

-(void)rightBtnClick:(UIBarButtonItem*)bt

{

    _secondController=[[SecondViewController alloc]init];

    _secondController.navigationItem.title=@"Gesture";

    [self.navigationController pushViewController:_secondController animated:YES];

}

 

- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

 

//觸控螢幕時調用該方法

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

 

    NSLog(@"touhesBegan");

    //獲得螢幕上的手指個數

    NSLog(@"%i",[touches count]);

}

 

 

//當手指在螢幕上滑動調用該方法

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event

{

    UIImageView *imgView=(UIImageView *)[self.view viewWithTag:100];

    

    for (UITouch *t in touches) {

        //t.view獲得手指點擊的空件對象

        if (t.view==imgView) {

            //圖片根據點到圖片上的手指的位置而移動

            imgView.center=[t locationInView:self.view];

        }

    }

    

    

    NSLog(@"moving");

}

 

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event

{

    NSLog(@"end");

}