iOS中的手势识别的积累:UIGestureRecognizer

#import "RootViewController.h"
#import "UIColor+MyUIColor.h"
@interface RootViewController ()

@end

@implementation RootViewController

/*
 UITapGestureRecognizer是轻拍?手势识别器,能识别轻拍操作
 UILongPressGestureRecognizer是?长按?手势识别器,能识别?长按操作。
 UIRotationGestureRecognizer是旋转?手势识别器,能识别旋转操作。
 UIPinchGestureRecognizer是捏合?手势识别器,能识别捏合操作。
 UIPanGestureRecognizer是平移?手势识别器,能识别拖拽操作。
 UISwipeGestureRecognizer是轻扫?手势识别器,能识别拖拽操作。
 UIScreenEdgePanGestureRecognizer是屏幕边缘轻扫识别器,是iOS7中新增的?手势。

 */

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    UIView *redView = [[UIView alloc] initWithFrame:CGRectMake(0, 50, [UIScreen mainScreen].bounds.size.width, 400)];
    [self.view addSubview:redView];
    redView.backgroundColor = [UIColor redColor];

    [redView release];
    // 手势识别器的基类:UIGestureRecognizer
   //轻拍手势
    /*
    //轻拍手势
    //1.创建轻拍手势对象
    UITapGestureRecognizer *tapGesTure = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapGesture:)];
    //2.将视图添加到视图上
    //设置轻拍的次数
    tapGesTure.numberOfTapsRequired = 2;
    //设置触摸的点数
    tapGesTure.numberOfTouchesRequired = 2;
     [redView addGestureRecognizer:tapGesTure];
     //3.释放
     [tapGesTure release];
   */
   //长按手势
    /*
    //1.创建长按手势对象
    UILongPressGestureRecognizer *longGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)];
    //设置长按手势的识别时间
    longGesture.minimumPressDuration = 0.3;
    //2.添加到视图
    [redView addGestureRecognizer:longGesture];

    //3.释放
    [longGesture release];
    */
   //清扫手势
    //1.创建清扫手势
    /*
    UISwipeGestureRecognizer *swipeGestureLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeGesture:)];
    //2.添加到视图
    [redView addGestureRecognizer:swipeGestureLeft];
    //释放
    [swipeGestureLeft release];

    UISwipeGestureRecognizer *swipeGestureRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeGesture:)];
    //设置清扫方向
    swipeGestureRight.direction = UISwipeGestureRecognizerDirectionLeft;

    //2.添加到视图
    [redView addGestureRecognizer:swipeGestureRight];
    //释放
    [swipeGestureRight release];
     */
    //平移手势

    //1.创建平移手势对象
    UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePanGesture:)];
    //2.添加手势对象
    [redView addGestureRecognizer:panGesture];
    //3.释放
    [panGesture release];

    //捏合手势
    /*
    //1.创建捏合手势
    UIPinchGestureRecognizer *pinchGesture = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(handlePinchGesture:)];
    //2.添加到视图
    [redView addGestureRecognizer:pinchGesture];
    //3.释放
    [pinchGesture release];

    */
    //旋转手势
    /*
    //1.创建旋转手势对象
    UIRotationGestureRecognizer *rotationGesture = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(handleRotationGesture:)];
    //2.添加到视图
    [redView addGestureRecognizer:rotationGesture];
    //3.释放
    [rotationGesture release];
     */
    //屏幕边缘平移手势
    //1.创建屏幕边缘平移手势对象
//    UIScreenEdgePanGestureRecognizer *screenEdgePan =  [[UIScreenEdgePanGestureRecognizer alloc] initWithTarget:self action:@selector(handelScreenEdgeGesture:)];
//    //2.添加视图
//    //设置平移的屏幕边界
//    screenEdgePan.edges = UIRectEdgeLeft;
//    [redView addGestureRecognizer:screenEdgePan];
//    //3.释放视图
//    [screenEdgePan release];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark ---- handle gesture action
//屏幕边缘手势
- (void)handelScreenEdgeGesture:(UIScreenEdgePanGestureRecognizer *)screenEdge
{
    //1.获取平移增量
    CGPoint point = [screenEdge translationInView:screenEdge.view];

    //2.平移视图
    screenEdge.view.transform = CGAffineTransformTranslate(screenEdge.view.transform, point.x, 0);
    //3.将之前增量清零
    [screenEdge setTranslation:CGPointZero inView:screenEdge.view];

}
//旋转手势
- (void)handleRotationGesture:(UIRotationGestureRecognizer *)rotationGesture
{
    //放射变换
    rotationGesture.view.transform = CGAffineTransformRotate(rotationGesture.view.transform, rotationGesture.rotation);
    rotationGesture.rotation = 0;
}

//捏合手势
- (void)handlePinchGesture:(UIPinchGestureRecognizer *)pinch
{
    //仿射变换
    //从原来位置开始缩放
    pinch.view.transform =CGAffineTransformMakeScale(pinch.scale, pinch.scale);

//    pinch.view.transform = CGAffineTransformScale(pinch.view.transform, pinch.scale, pinch.scale);
//    //将之前的缩放比例置1
//    pinch.scale = 1;
}

//平移手势
- (void)handlePanGesture:(UIPanGestureRecognizer *)panGesture
{
//    //1.获取平移增量
//    CGPoint point = [panGesture translationInView:panGesture.view];
//    //2.改变视图的位置
//    panGesture.view.center = CGPointMake(panGesture.view.center.x + point.x, point.y + panGesture.view.center.y);
//
//    //3.将之前的增量清零
//    [panGesture setTranslation:CGPointZero inView:panGesture.view];
    //仿射变换
    //1.获取平移增量
    CGPoint point = [panGesture translationInView:panGesture.view];
    //2.修改视图的transform
   // panGesture.view.transform = CGAffineTransformMakeScale(point.x, point.y);
    //panGesture.view.transform = CGAffineTransformTranslate(panGesture.view.transform, point.x, point.y);
    panGesture.view.transform = CGAffineTransformMakeTranslation(point.x, point.y);
    //3.将之前的增量清零
    //[panGesture setTranslation:CGPointZero inView:panGesture.view];
}

//清扫手势
- (void)handleSwipeGesture:(UISwipeGestureRecognizer *)swipGesture
{

    if (swipGesture.direction == UISwipeGestureRecognizerDirectionRight) {
         swipGesture.view.backgroundColor = [UIColor randomColor];
    }
    if (swipGesture.direction == UISwipeGestureRecognizerDirectionLeft) {
        self.view.backgroundColor = [UIColor randomColor];
    }
}

//处理轻拍手势
- (void)handleTapGesture:(UITapGestureRecognizer *)tapGesture
{
    tapGesture.view.backgroundColor = [UIColor randomColor];

}
//处理长按手势
- (void)handleLongPress:(UILongPressGestureRecognizer *)longGesture{
    //当手势识别器为长按时,触发长按改变颜色的方法
    if (longGesture.state == UIGestureRecognizerStateBegan) {
         longGesture.view.backgroundColor = [UIColor randomColor];
    }

}
- (void)
@end

随机色

+ (UIColor *)randomColor
{
    return [UIColor colorWithRed:arc4random() % 256 / 255.0 green:arc4random() % 256 / 255.0  blue:arc4random() % 256 / 255.0  alpha:1];
}