1.UITapGestureRecognizer 點選手勢
2.UILongPressGestureRecognizer 長按手勢
3.UISwipeGestureRecognizer 輕掃手勢
4.UIPinchGestureRecognizer 捏合手勢
5.UIRotationGestureRecognizer 旋轉手勢
6.UIPanGestureRecognizer 拖拽手勢
1. 分段控件
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:@"點選", @"長按", @"輕掃", @"捏合", @"旋轉", @"拖拽", nil]];
segmentedControl.frame = CGRectMake(30, 400, 315, 50);
segmentedControl.momentary = YES;
// 插入一個控件
// [segmentedControl insertSegmentWithTitle:@"圖檔" atIndex:6 animated:YES];
segmentedControl.tintColor = [UIColor blackColor];
[segmentedControl addTarget:self action:@selector(action:) forControlEvents:UIControlEventValueChanged];
[self.view addSubview:segmentedControl];
[segmentedControl release];
2. 分段控件點選事件
- (void)action:(id)sender{
// 分段點選按鈕
UISegmentedControl *seg = (UISegmentedControl *)sender;
// 移除imageView的所有手勢,重新添加新的手勢
// 第一步:獲得一個視圖的所有手勢
NSArray *gestures = self.imageView.gestureRecognizers;
// 第二步:移除
for (UIGestureRecognizer *ges in gestures) {
[self.imageView removeGestureRecognizer:ges];
}
switch (seg.selectedSegmentIndex) {
case 0:
{
// 建立一個點選手勢
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction:)];
[self.imageView addGestureRecognizer:tap];
[tap release];
}
break;
case 1:
{
// 長按手勢
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressAction:)];
[self.imageView addGestureRecognizer:longPress];
[longPress release];
}
break;
case 2:
{
UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeAction:)];
// 一個輕掃手勢隻能有一個輕掃方向
// 設定輕掃的方向
swipe.direction = UISwipeGestureRecognizerDirectionDown;
[self.imageView addGestureRecognizer:swipe];
[swipe release];
}
break;
case 3:
{
// 捏合手勢
UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchAciton:)];
[self.imageView addGestureRecognizer:pinch];
[pinch release];
}
break;
case 4:
{
// 旋轉手勢
UIRotationGestureRecognizer *rotate = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotateAction:)];
[self.imageView addGestureRecognizer:rotate];
[rotate release];
}
break;
case 5:
{
// 拖拽手勢
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panAction:)];
[self.imageView addGestureRecognizer:pan];
[pan release];
}
break;
default:
break;
}
}
#pragma mark - 内部的點選手勢事件
#pragma mark 點選
- (void)tapAction:(UITapGestureRecognizer *)tap{
// 通過手勢獲得手勢所在的視圖
// UIImageView *aImage = (UIImageView *)tap.view;
// 通過不同的狀态做不同的事
if (tap.state == UIGestureRecognizerStateBegan) {
NSLog(@"開始點選");
}
NSLog(@"%s", __func__);
}
#pragma mark 長按
- (void)longPressAction:(UILongPressGestureRecognizer *)press{
if (press.state == UIGestureRecognizerStateBegan) {
NSLog(@"begin");
}
}
#pragma mark 輕掃
- (void)swipeAction:(UISwipeGestureRecognizer *)swipe{
NSLog(@"橫掃千軍");
}
#pragma mark 捏合
- (void)pinchAciton:(UIPinchGestureRecognizer *)pinch{
NSLog(@"捏合");
self.imageView.transform = CGAffineTransformScale(self.imageView.transform, pinch.scale, pinch.scale);
pinch.scale = 1.0f;
}
#pragma mark 旋轉
- (void)rotateAction:(UIRotationGestureRecognizer *)ges{
// 旋轉的基礎角度為0, 每次旋轉的角度都是以目前中軸線為軸來判定的
self.imageView.transform = CGAffineTransformRotate(self.imageView.transform, ges.rotation);
ges.rotation = 0;
NSLog(@"Rotation = %f", ges.rotation);
}
#pragma mark 拖拽
- (void)panAction:(UIPanGestureRecognizer *)pan{
CGPoint point = [pan translationInView:self.imageView];
// 偏移量會在每次偏移之後,在偏移後的基礎上增加
self.imageView.transform = CGAffineTransformTranslate(self.imageView.transform, point.x, point.y);
// 重新把偏移量歸零
[pan setTranslation:CGPointZero inView:self.imageView];
}