#import "RootViewController.h" #import "UIColor+MyUIColor.h" @interface RootViewController () @end @implementation RootViewController /* UITapGestureRecognizer是轻拍⼿手势识别器,能识别轻拍操作 UILongPressGestureRecognizer是⻓长按⼿手势识别器,能识别⻓长按操作。 UIRotationGestureRecognizer是旋转⼿手势识别器,能识别旋转操作。 UIPinchGestureRecognizer是捏合⼿手势识别器,能识别捏合操作。 UIPanGestureRecognizer是平移⼿手势识别器,能识别拖拽操作。 UISwipeGestureRecognizer是轻扫⼿手势识别器,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]; }
