ios12 解决点击手势冲突 ios触控手势

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mob64ca13fdd43c 2024-07-05 10:49:33

文章标签 ios12 解决点击手势冲突缩放长按手势控件 文章分类 iOS 移动开发

Demo实例

UIGestureRecognizer类，用于检测发生在设备中的手势。

UIGestureRecognizer是一个抽象类，定义了所有手势的基本行为，它有下面一些子类用于处理具体的手势：

1、拍击 UITapGestureRecognizer (任意次数的拍击)

通过设置属性" numberOfTapsRequired "实现单击，或双击

2、向里或向外捏 UIPinchGestureRecognizer (用于缩放)

通过设置属性" scale "实现对UI控件大小进行缩放的改变，如：

float lastScale = 0.0;
UILabel *view = (UILabel *)recognizer.view;
recognizer.scale = recognizer.scale - lastScale + 1.0;
view.transform = CGAffineTransformScale(view.transform, recognizer.scale, recognizer.scale);
lastScale = recognizer.scale;

3、摇动或者拖拽 UIPanGestureRecognizer

4、滑动 UISwipeGestureRecognizer (以任意方向)

通过设置属性" direction "实现滑动方向

5、旋转 UIRotationGestureRecognizer (手指朝相反方向移动)

通过设置属性" rotation "实现对UI控件旋转的改变，如：

UILabel *view = (UILabel *)recognizer.view;

float rotationV = recognizer.rotation;

view.transform = CGAffineTransformMakeRotation(rotationV);

6、长按 UILongPressGestureRecognizer

通过设置属性" longpressRecognizer "实现长按响应时间

对于不同类型的手势识别器，具有不同的配置属性。

比如UITapGestureRecognizer，可以配置拍击次数。界面接收到手势之后，可以发送一个消息，用于处理响应手势动作后的任务。

不同的手势识别器，发送的消息方法也会有所不同。

使用注意事项：

1、实例化时，同时设置响应target对象，以及响应方法

2、响应方法中，可能会出现方法被多次响应的情况，可通过设置手势状态进行控制

3、同一个视图中既有单击，又有双击手势时，应该添加语句以进行识别" [singleTap requireGestureRecognizerToFail:doubleTap];"

// 图像视图
 UIImageView *recognizerImage = [[UIImageView alloc] initWithFrame:CGRectMake(10, 144, 60, 60)];
 [recognizerImage setImage:[UIImage imageNamed:@"dingdang.png"]];
 [recognizerImage setBackgroundColor:[UIColor clearColor]];
 [recognizerImage setUserInteractionEnabled:YES];
 [self.view addSubview:recognizerImage];

// 点击手势
// 单击的手势
UITapGestureRecognizer *tapRecognizerSingle = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapRecognizerSingleAction:)];
tapRecognizerSingle.numberOfTapsRequired = 1; // 单击
// 图像视图添加单击手势
[recognizerImage addGestureRecognizer:tapRecognizerSingle];
    
// 双击的手势
UITapGestureRecognizer *tapRecognizerDouble = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapRecognizerDoubleAction:)];
tapRecognizerDouble.numberOfTapsRequired = 2; // 双击
// 如果双击确定检测失败触发单击
[tapRecognizerSingle requireGestureRecognizerToFail:tapRecognizerDouble];
// 图像视图添加双击手势
[recognizerImage addGestureRecognizer:tapRecognizerDouble];

// 点击手势方法 单击
bool isChangeBgColor;
- (void)tapRecognizerSingleAction:(UITapGestureRecognizer *)recognizer
{
    // 单击时改变背景颜色
    if (1 == recognizer.numberOfTapsRequired)
    {
        UIImageView *view = (UIImageView *)recognizer.view;
        
        if (!isChangeBgColor)
        {
            [view setBackgroundColor:[UIColor orangeColor]];
        }
        else
        {
            [view setBackgroundColor:[UIColor yellowColor]];
        }
        isChangeBgColor = !isChangeBgColor;
    }
}


// 点击手势方法 双击
bool isChangeSize;
- (void)tapRecognizerDoubleAction:(UITapGestureRecognizer *)recognizer
{
    // 放大或缩小视图
    if (2 == recognizer.numberOfTapsRequired)
    {
        UIImageView *view = (UIImageView *)recognizer.view;
        
        // 通过isChangeSize值区分放大还是缩小
        if (!isChangeSize)
        {
            // 放大
            CGRect currentBounds = view.bounds;
            currentBounds.size.width *= 2;
            currentBounds.size.height *= 2;
            
            // 添加动画
            [UIView animateWithDuration:0.3 animations:^{
                view.bounds = currentBounds;
            }];
        }
        else
        {
            // 缩小
            CGRect currentBounds = view.bounds;
            currentBounds.size.width /= 2;
            currentBounds.size.height /= 2;
            
            // 添加动画
            [UIView animateWithDuration:0.3 animations:^{
                view.bounds = currentBounds;
            }];
        }
        isChangeSize = !isChangeSize;
    }
}

// 长按手势
UILongPressGestureRecognizer *longPressRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressRecognizerAction:)];
// 图像视图添加长按手势
[recognizerImage addGestureRecognizer:longPressRecognizer];

// 长按手势方法
- (void)longPressRecognizerAction:(UILongPressGestureRecognizer *)recognizer
{
    // 改变选中视图背景色（原始背景色，原始大小）
    UIImageView *view = (UIImageView *)recognizer.view;
    
    [view setFrame:CGRectMake(0, 0, 60, 60)];
    [view setCenter:CGPointMake(self.view.frame.size.width / 2, self.view.frame.size.height / 2)];
    [view setBackgroundColor:[UIColor clearColor]];
}

// 旋转手势
UIRotationGestureRecognizer *rotateRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotateRecognizerAction:)];
// 图像视图添加旋转手势
[recognizerImage addGestureRecognizer:rotateRecognizer];

// 旋转手势方法
- (void)rotateRecognizerAction:(UIRotationGestureRecognizer *)recognizer
{
    // 旋转视图
    UIImageView *view = (UIImageView *)recognizer.view;

    float rotationV = recognizer.rotation;
    view.transform = CGAffineTransformMakeRotation(rotationV);
}

// 拖动手势
UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panRecognizerAction:)];
// 图像视图添加拖动手势
[recognizerImage addGestureRecognizer:panRecognizer];

// 拖动手势方法
- (void)panRecognizerAction:(UIPanGestureRecognizer *)recognizer
{
    // 拖动视图
    UIImageView *view = (UIImageView *)recognizer.view;
    
    CGPoint translation = [recognizer translationInView:view];
    CGFloat centerX = view.center.x + translation.x;
    CGFloat centerY = view.center.y + translation.y;
    view.center = CGPointMake(centerX, centerY);
    [recognizer setTranslation:CGPointZero inView:view];
}

// 滑动手势
// 滑动手势-向上滑
UISwipeGestureRecognizer *swipeRecognizerUP = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeRecognizerAction:)];
swipeRecognizerUP.direction = UISwipeGestureRecognizerDirectionUp;
// 滑动手势-向下滑
UISwipeGestureRecognizer *swipeRecognizerDOWN = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeRecognizerAction:)];
swipeRecognizerDOWN.direction = UISwipeGestureRecognizerDirectionDown;
// 滑动手势-向左滑
UISwipeGestureRecognizer *swipeRecognizerLEFT = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeRecognizerAction:)];
swipeRecognizerLEFT.direction = UISwipeGestureRecognizerDirectionLeft;
// 滑动手势-向右滑
UISwipeGestureRecognizer *swipeRecognizerRIGHT = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeRecognizerAction:)];
swipeRecognizerRIGHT.direction = UISwipeGestureRecognizerDirectionRight;
// 图像视图添加滑动手势
[recognizerImage addGestureRecognizer:swipeRecognizerUP];
[recognizerImage addGestureRecognizer:swipeRecognizerUP];
[recognizerImage addGestureRecognizer:swipeRecognizerUP];
[recognizerImage addGestureRecognizer:swipeRecognizerRIGHT];

// 滑动手势方法
- (void)swipeRecognizerAction:(UISwipeGestureRecognizer *)recognizer
{
    UIImageView *view = (UIImageView *)recognizer.view;
    NSLog(@"view(%@) %@", NSStringFromClass([view class]), view);
    
    if (recognizer.direction == UISwipeGestureRecognizerDirectionUp)
    {
        NSLog(@"direction == UISwipeGestureRecognizerDirectionUp");
    }
    else if (recognizer.direction == UISwipeGestureRecognizerDirectionDown)
    {
        NSLog(@"direction == UISwipeGestureRecognizerDirectionDown");
    }
    else if (recognizer.direction == UISwipeGestureRecognizerDirectionLeft)
    {
        NSLog(@"direction == UISwipeGestureRecognizerDirectionLeft");
    }
    else if (recognizer.direction == UISwipeGestureRecognizerDirectionRight)
    {
        NSLog(@"direction == UISwipeGestureRecognizerDirectionRight");
    }
}

// 缩放手势
UIPinchGestureRecognizer *pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchRecognizerAction:)];
// 图像视图添加缩放手势
[recognizerImage addGestureRecognizer:pinchRecognizer];

// 缩放手势方法
float lastScale = 0.0;
- (void)pinchRecognizerAction:(UIPinchGestureRecognizer *)recognizer
{
    // 缩放视图
    UIImageView *view = (UIImageView *)recognizer.view;
    
    recognizer.scale = recognizer.scale - lastScale + 1.0;
    view.transform = CGAffineTransformScale(view.transform, recognizer.scale, recognizer.scale);
    
    lastScale = recognizer.scale;
}

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