gesture

问题 How do you use the Android API to zoom in and out maps with the 2 finger gestures like iPhone? 回答1: Android doesn't currently officially support multitouch. There's been some work by various people (Your google for 'android multitouch' is as good as mine), but nothing in the official android distro or APIs yet. A relevant blog post just showed up in my feedreader with more particulars. UPDATED: As of Android API Level 5 (aka Android 2.0), Android does have a multi-touch API. Support for it is

问题 In my app, I want that using finger movement from left-to-right in Activity A should call Activity B. Similarly, if i move it right-to-left, it should go back to the previous Activity, i.e, Activity A. How to achieve this? 回答1: you have to define your gestures with the android gesture tool then you have to implement a gesture listener to listen for gesture events Basic Gesture Detection - stackoverflow Introduction to Gestures - mobile tuts Source: Android: Slide gesture and animation for

问题 After updating Hammer to v2 it doesn't recognize gestures anymore. It does trigger 'switch(event.type)' but skips all of the cases. Is 'case' not supported anymore? Example of the code: function handleHammer(event) { // disable browser scrolling event.preventDefault(); switch(event.type) { case 'tap': the_single_post.removeClass('grab'); var tapPos = (event.gesture.center.pageX) - (element.offset().left); if (tapPos > paneWidth/2) { hammer.next('easeinout'); } else if (tapPos < paneWidth/2) {

问题 I have many views (FrameLayouts) on my screen - each has a SimpleOnGestureListener set as the onTouchListener. I'm correctly getting the onSingleTapConfirmed method being fired when I tap one of these views, but I can't work out how to determine which view was tapped? Is there a simple way to do this from the MotionEvent? 回答1: I have many views (FrameLayouts) on my screen - each has a SimpleOnGestureListener set as the onTouchListener. Save a reference to the View in the OnTouchListener, then

问题 Is it possible to recognize gestures and touches simultaneously when interacting with a UIKit object. For example, when a user is scrolling through a slider or pickerview, could I also be handling a swipe gesture? 回答1: If you set your view controller to be the delegate of your gestures, you can implement: - (BOOL) gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer I'm not sure if you're

问题 I have a subclassed UIButton (DragButton) that I would like to be able to perform pan / pinch / rotate on. Instances of DragButton are created programmatically. There may be 1, there may be 20. All depends on the user. I am experiencing issues in getting these subclassed buttons to properly work with gestures. The main issue is none of the gestures trigger! Within DragButton class, inside the awakeFromNib instance method, the gestures don't work at all. Inside layoutSubviews, the panning

问题 @Override public boolean onTouchEvent(MotionEvent event) { if (gestureDetector.onTouchEvent(event)) { return true; } return super.onTouchEvent(event); } private void onLeftSwipe() { // Do something System.out.println("left swipe"); } private void onRightSwipe() { // Do something System.out.println("right swipe"); } // Private class for gestures private class SwipeGestureDetector extends SimpleOnGestureListener { // Swipe properties, you can change it to make the swipe // longer or shorter and

问题 I currently use the WP7 tookit's GestureService in a few of my applications in order to perform Flick and Pinch/Zoom gestures on Silverlight UI elements. However, seeing that the service has been deprecated, I am trying to find a replacement library that can do the perform all the low level calculations in a similar fashion. I've been reading that hooking into ManipulationDelta is the way to go, but I'd rather not delve into that if I don't have to - is there an alternative that anyone is

问题 I need to programmatically disable Windows 8 charms bar. On MSDN i can find sample code to do that. However while using that code snippet with Windows 8 SDK installed on my machine i am getting Linker error. The code snippet can be found at System.EdgeGesture.DisableTouchWhenFullscreen I am able to retrieve the PropertyStore pointer but when i try to set the value "PKEY_EdgeGesture_DisableTouchWhenFullscreen" i am get linker error for this property. 回答1: The symbol is exported the following

问题 Having trouble with a UILongPressGestureRecognizer in a custom subclass of MKAnnotationView. The callback is fired only intermittently. If I make the minimumPressDuration shorter, it fires more frequently. With a minimumPressDuration value of 0.1, it fires every time. With a value of 0.4, it never fires at all, no matter how long I leave my finger on it. At 0.2 it is hit or miss. If I use a Tap gesture (as below), it works fine. I'm using LongPress gestures on other views and they work fine.