[ iOS ]觸控手勢

觸控手勢

• tap 點
• long tap 長點

• pinch 擠
• rotate 轉

• swipe 掃
• pam 移動
• edge 邊緣

• 底層view 的辨認器上有另一個view時,若上層view沒有gestrue事件底層的會往上透

•  gesture

Tap Gesture Recognizer

• Taps : 敲幾下觸發
• Touches ： 幾根手指觸控才觸發

Long press Gesture

• Min Duration : 最少按幾秒
• Taps : 無效
• Touches ：幾根手指觸控才觸發

Swipe Gesture 

• Swipe : 掃的方向
• Touches : 幾根手指觸控才觸發
• 要有幾個方向就加幾個

pen Gesture

• UIView 必須要打開 User Interaction Enabled 才會互動
• 移動ImageView 會一直回傳移動值所以會一直疊加, 所以必須收到一次後就要改變UIView的位置

- (IBAction)handlePan:(UIPanGestureRecognizer *)sender {
    
    CGPoint p = [sender translationInView:sender.view];
    
    NSLog(@"%@", NSStringFromCGPoint(p));
    
    mill.center = CGPointMake(mill.center.x+p.x, mill.center.y+p.y);
    
    //把當下的點設成原點
    [sender setTranslation:CGPointZero inView:sender.view];
    
}

Pinch

- (IBAction)handlePinch:(UIPinchGestureRecognizer *)sender {
//    sender.view.transform =CGAffineTransformMakeScale(sender.scale, sender.scale);
    sender.view.transform = CGAffineTransformScale(sender.view.transform, sender.scale, sender.scale);
    [sender setScale:1.0];
    
}

Rotate

- (IBAction)handleRotate:(UIRotationGestureRecognizer *)sender {
//    sender.view.transform = CGAffineTransformMakeRotation(sender.rotation);
    sender.view.transform = CGAffineTransformRotate(sender.view.transform, sender.rotation);
    [sender setRotation: 0.0];
}