UI_手勢，ui手勢

UI_手勢，ui手勢
輕拍手勢

    // 建立一個輕拍手勢，同時綁定了事件    UITapGestureRecognizer *aTapGR = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGRAction:)];    // 設定輕拍次數    aTapGR.numberOfTapsRequired = 1;    // 設定手指觸摸的個數    aTapGR.numberOfTouchesRequired = 1; // 模擬器按住 alt 可以兩個手指觸摸    // 添加手勢    [self.rootView addGestureRecognizer:aTapGR];    [aTapGR release];#pragma mark - 輕拍手勢- (void)tapGRAction:(UITapGestureRecognizer *)sender{    [self.rootView.aTextField resignFirstResponder];    // 下面也可以，讓rootVIew 停止編輯    // [self.rootView endEditing:YES];}

長按手勢

    UILongPressGestureRecognizer *longPressGR = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressGRAction:)];    [self.rootView addGestureRecognizer:longPressGR];    [longPressGR release];#pragma mark - 長按手勢- (void)longPressGRAction:(UILongPressGestureRecognizer *)sender{    // 判斷，否則會變兩次    if (sender.state == UIGestureRecognizerStateBegan) {        CGFloat red = arc4random() % 256 / 255.0;        CGFloat green = arc4random() % 256 / 255.0;        CGFloat blue = arc4random() % 256 / 255.0;        self.rootView.backgroundColor = [UIColor colorWithRed:red green:green blue:blue alpha:1];    }}

旋轉手勢

    UIRotationGestureRecognizer *rotationGR = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationGRAction:)];    // 手勢要添加到圖片上    [self.rootView.opeImageView addGestureRecognizer:rotationGR];    [rotationGR release];#pragma mark - 旋轉手勢- (void)rotationGRAction:(UIRotationGestureRecognizer *)sender{    // 操作對象和旋轉角度    self.rootView.opeImageView.transform = CGAffineTransformRotate(self.rootView.opeImageView.transform, sender.rotation);    // 旋轉后角度為0    sender.rotation = 0;    // 可以代替上面兩行    // self.rootView.opeImageView.transform = CGAffineTransformMakeRotation(sender.rotation);}

捏合手勢

    UIPinchGestureRecognizer *pinchGR = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchGRAction:)];    [self.rootView.opeImageView addGestureRecognizer:pinchGR];    [pinchGR release];#pragma mark - 捏合手勢- (void)pinchGRAction:(UIPinchGestureRecognizer *)sender{    self.rootView.opeImageView.transform = CGAffineTransformScale(self.rootView.opeImageView.transform, sender.scale, sender.scale);    // 縮放完成後縮放比例重新置為1    sender.scale = 1;}

平移手勢

    UIPanGestureRecognizer *panGR = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGRAction:)];    [self.rootView.opeImageView addGestureRecognizer:panGR];    [panGR release];#pragma mark - 平移手勢- (void)panGRAction:(UIPanGestureRecognizer *)sender{    CGPoint point = [sender translationInView:sender.view];    self.rootView.opeImageView.transform = CGAffineTransformTranslate(self.rootView.opeImageView.transform, point.x, point.y);    // 平移之後讓手勢相對於所在的 view 重新置0    [sender setTranslation:CGPointZero inView:sender.view];}

撥動手勢

    UISwipeGestureRecognizer *swipeGR = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeGRAction:)];    [self.rootView addGestureRecognizer:swipeGR];    [swipeGR release];    // 一個手勢只能一個方向輕掃，多個方向寫多個手勢    swipeGR.direction = UISwipeGestureRecognizerDirectionRight;    /**     typedef NS_OPTIONS(NSUInteger, UISwipeGestureRecognizerDirection) {     UISwipeGestureRecognizerDirectionRight = 1 << 0,     UISwipeGestureRecognizerDirectionLeft  = 1 << 1,     UISwipeGestureRecognizerDirectionUp    = 1 << 2,     UISwipeGestureRecognizerDirectionDown  = 1 << 3     };     */#pragma mark - 清掃手勢- (void)swipeGRAction:(UISwipeGestureRecognizer *)sender{    NSLog(@"清掃手勢");}

螢幕邊緣輕掃

    UIScreenEdgePanGestureRecognizer *screenEdgePanGR = [[UIScreenEdgePanGestureRecognizer alloc] initWithTarget:self action:@selector(screenEdgePanGRAction:)];    [self.rootView addGestureRecognizer:screenEdgePanGR];    [screenEdgePanGR release];#pragma mark - 螢幕邊緣清掃手勢- (void)screenEdgePanGRAction:(UIScreenEdgePanGestureRecognizer *)sender{    NSLog(@"螢幕邊緣清掃手勢");}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}

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