IOS gesture Recognizer Overview

Gesture Recognizer iOS gesture recognizer (Uigesturerecognizer)

• Tap gestures (UITapGestureRecognizer)
• Swipe gesture (Uiswipegesturerecognizer)
• Rotation gesture (Uirotationgesturerecognizer)
• Pinch gesture (Uipinchgesturerecognizer)
• Long-press gesture (Uilongpressgesturerecognizer)
• Pan gesture (Uipangesturerecognizer)
• Screen edge panning gesture (Uiscreenedgepangesturerecognizer)

Uigesturerecognizer

The corresponding method:

- initWithTarget:action:- addTarget:action:- removeTarget:action:

- locationInView:- locationOfTouch:inView:- numberOfTouches

Property:

• Stated
• View
• Enable
• Cancelstouchesinview

• Delaystouchesbegin

  Here's a way to be very important, when you need to use a double-tap gesture, the click Gesture also appears. This is the time to use the following method:

 - requireGestureRecognizerToFail:(eg: 单击需要双击失败)

UITapGestureRecognizer

• numberoftapsrequired (number of clicks)
• Numberoftouchesrequired (with a few fingers)

Uiswipegesturerecognizer

• direction (moving direction)
• Numberoftouchesrequired

Uirotationgesturerecognizer

• Rotation (This is the absolute value of the rotation angle, not the increment, if you need an increment value, you need to rotation 0 each time)
• Velocity (number of arcs per second, radius 1)

Uipinchgesturerecognizer

• Scale (also requires scale 1 if you need to get the increment value)
• Velocity (number of scale per second)

Uilongpressgesturerecognizer

• Minimumpressduration
• Numberoftouchesrequired
• Numberoftapsrequired
• Alowablemovement (Allow move)

Uipangesturerecognizer

• Maximumnumberoftouches
• Minimumnumberoftouches

- translationinView:- setTranslation:inView:- velocityView:  (速度以 CGpoint 方式返回,可以分解为 x 和 y 两个方向的速度 )

Uiscreenedgepangesturerecognizer

• Edges

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This gesture is somewhat different from the panning gesture, which is a part of the edge of the screen to produce an effect that requires special handling when used, or conflicts with the panning gesture. Because it inherits Uipangesturerecognizer.

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IOS gesture Recognizer Overview