UITouch觸摸與手勢

UITouch觸摸與手勢

1. //延遲調用單擊事件,以便雙擊時可取消單擊調用

        [selfperformSelector:@selector(singleTap) withObject:nilafterDelay:0.2];

2. //類方法取消單擊調用方法,及時調用雙擊方法

        [NSObjectcancelPreviousPerformRequestsWithTarget:selfselector:@selector(singleTap) object:nil];

3.self.clipsToBounds= YES//當子視圖越界時,剪切子視圖

幾種常用的手勢

//創建手勢視圖

    UIView *gestureView = [[UIViewalloc]initWithFrame:CGRectMake(10, 20, 300, 300)];

    gestureView.backgroundColor = [UIColororangeColor];

    UILabel *label = [[UILabelalloc]initWithFrame:CGRectMake(100, 400, 100, 50)];

    label.text = @"0";

    label.textAlignment = NSTextAlignmentCenter;

    label.backgroundColor = [UIColorblueColor];

    label.tag = 100;

    [self.viewaddSubview:label];

    [self.viewaddSubview:gestureView];

    /******************點擊手勢*******************/

    UITapGestureRecognizer *tap1 = [[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(tap1Action:)];

    //點擊的數量---點擊的次數

    tap1.numberOfTapsRequired = 1;

    //點擊的個數-----手指的個數

    tap1.numberOfTouchesRequired = 1;

    [gestureView  addGestureRecognizer:tap1];

    //單手雙擊

UITapGestureRecognizer *tap2 = [[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(tap2Action:)];

    tap2.numberOfTouchesRequired = 2;//雙手雙擊

    tap2.numberOfTapsRequired = 2;

    [gestureView addGestureRecognizer:tap2];

    //如果tap2觸發了.則tap1則失效-----雙擊時,單擊失效

    [tap1 requireGestureRecognizerToFail:tap2];

    /******************輕掃手勢***********************/

    UISwipeGestureRecognizer *swip1 = [[UISwipeGestureRecognizeralloc]initWithTarget:selfaction:@selector(swip1Action:)];

    [gestureView addGestureRecognizer:swip1];

    /******************平移手勢***********************/

    UIPanGestureRecognizer *pan1 = [[UIPanGestureRecognizeralloc]initWithTarget:selfaction:@selector(pan1Action:)];

    [gestureView addGestureRecognizer:pan1];

    /******************長按手勢***********************/

    UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizeralloc]initWithTarget:selfaction:@selector(longPressAction:)];

    [gestureView addGestureRecognizer:longPress];

    /******************旋轉手勢***********************/

    UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizeralloc]initWithTarget:selfaction:@selector(rotationAction:)];

    [gestureView addGestureRecognizer:rotation];

    /******************捏合手勢***********************/

    UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizeralloc]initWithTarget:selfaction:@selector(pinchAction:)];

    [gestureView addGestureRecognizer:pinch];

}

/******************點擊手勢*******************/

//單擊

- (void)tap1Action:(UITapGestureRecognizer *)tap1

{

    NSLog(@"單擊");

    UILabel *label = (UILabel *)[self.viewviewWithTag:100];

    label.text = @"單擊";

}

//雙擊

- (void)tap2Action:(UITapGestureRecognizer *)tap2

{

    NSLog(@"雙擊");

    UILabel *label = (UILabel *)[self.viewviewWithTag:100];

    label.text = @"雙擊";

}

/******************輕掃手勢***********************/

- (void)swip1Action:(UISwipeGestureRecognizer *)swip1

{

//    NSLog(@"輕掃");

    UILabel *label = (UILabel *)[self.viewviewWithTag:100];

    if (swip1.direction == UISwipeGestureRecognizerDirectionRight) {

        label.text = @"向右輕掃";

    }elseif (swip1.direction == UISwipeGestureRecognizerDirectionLeft){

        label.text = @"向左輕掃";

    }elseif (swip1.direction == UISwipeGestureRecognizerDirectionUp){

        label.text = @"向上輕掃";

    }elseif (swip1.direction == UISwipeGestureRecognizerDirectionDown){

        label.text = @"向下輕掃";

    }

}

/******************平移手勢***********************/

- (void)pan1Action:(UIPanGestureRecognizer *)pan1

{

//    UILabel *label = (UILabel *)[self.viewviewWithTag:100];

    CGPoint p1 = [pan1 locationInView:pan1.view];

    NSLog(@"平移的坐標是:%@",NSStringFromCGPoint(p1));

}

/******************長按手勢***********************/

- (void)longPressAction:(UILongPressGestureRecognizer *)longPress

{

    UILabel *label = (UILabel *)[self.viewviewWithTag:100];

    if (longPress.state == UIGestureRecognizerStateBegan) {

        label.text = @"開始長按";

    }elseif (longPress.state == UIGestureRecognizerStateEnded){

        label.text = @"長按結束";

    }

}

/******************旋轉手勢***********************/

- (void)rotationAction:(UIRotationGestureRecognizer *)rota

{

//    UILabel *label = (UILabel *)[self.viewviewWithTag:100];

    //旋轉的弧度

    CGFloat r = rota.rotation;

    NSLog(@"旋轉的弧度是:%.2f",r);

    NSLog(@"旋轉的角度是:%.2f",180 * r / M_PI);

}

/******************捏合手勢***********************/

- (void)pinchAction:(UIPinchGestureRecognizer *)pinch

{

    //獲得捏合的比例

    CGFloat scale = pinch.scale;

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

}