gestures

问题 I'm trying to replicate the same technique that Apple uses in their mail app for marking mail as unread or "Mark as Unread" when you swipe from left to right inside a mailbox. I've found similar solutions but only for a gesture of swiping from right to left. I was hoping that this same solution was available as part of the Apple SDK for the opposite direction. How can I acheive the same left-to-right gesture effect as iOS' Mail app does? 回答1: I've found similar solutions but only for a

问题 Any ways to detect the new Reachability gesture of iOS8 in Objective-C? The gesture is activated double tapping the TouchID button on the iPhone6 and iPhone6Plus. 回答1: There are no public APIs for it. There are two related private API methods on UIApplication I can find (using either of these should get your app rejected from the App Store): _setReachabilitySupported: , which presumably would en/disable reachability (like Spotlight) _deactivateReachability , which would return the view to the

问题 I want to detect three finger tap in android screen.I am able to detect up to two fingers.How to detect three fingers it?I heard some where that android is capable of detecting 2 fingers.Is it so? 回答1: This code will can help you: public boolean onTouchEvent(MotionEvent event) { int action = event.getAction(); switch(action & MotionEvent.ACTION_MASK) { case MotionEvent.ACTION_POINTER_DOWN: // multitouch!! - touch down int count = event.getPointerCount(); // Number of 'fingers' in this time

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . I don´t need a full fledged framework like Sencha or jQuery mobile, just the ability to detect gestures such as swype or pinch to

问题 I'm working on implementing gesture recognition in my app, using the Gestures Builder to create a library of gestures. I'm wondering if having multiple variations of a gesture will help or hinder recognition (or performance). For example, I want to recognize a circular gesture. I'm going to have at least two variations - one for a clockwise circle, and one for counterclockwise, with the same semantic meaning so that the user doesn't have to think about it. However, I'm wondering if it would

问题 I have an application made in AngularJS which has arrow key navigation to switch views. I want to implement this navigation using swipe for touch devices. I tried jGestures library but it doesn't go well with swipe. I have been recommended NOT to use jquery mobile. Is there any other way to implement swipe? EDIT: It does not detect swipe cleanly. I tested it on multiple devices, including iPad and it takes multiple swipes to do an action(routing in my case). 回答1: I made this function for my

问题 I am trying to develop an iPhone application for children which will be able to draw characters on screen with touch and I want to know how to match the character drawn with good character of the alphabet. How will i compare the two shapes (drawing and existing) Any idea?? some code? 回答1: Using GLGestureRecognizer you can create a catalogue and it will compute a metric between an input point array against an "alphabet" you predefine. GLGestureRecognizer is an Objective-C implementation of the

问题 I am using: https://github.com/jasonpolites/gesture-imageview on load of the app, it has a placeholder image in a GestureImageView that pinch/zooms appropriately. I have a button that when clicks fires a camera intent, saves the file, and then I wish to set that image to be the source bitmap used in the gestureimageview. GestureImageView imageView = (GestureImageView) findViewById(R.id.imageViewOne); ContentResolver cr = getContentResolver(); getContentResolver().notifyChange(imageUriOne,

问题 I inherited from the QGraphicsObject and created a new class that has a pixmap and sets its transform origin point to: setTransformOriginPoint(boundingRect().center()); But when I call setRotation() on the my class (which is added to a QGraphicsView using the scene), the rotation doesn't use the center as the rotation anchor. How can I set the center to be the anchor of the rotation ? Thanks ! More information: calling setRotation() outside of a sceneEvent function it works, but inside a

问题 I have a Input Service and View in it. I need to override some gestures for ExplorationByTouch: e.g.: I want to turn off the double click. Here's a part of code, where I want to do that. Any idea how? @Override public boolean onTouchEvent(MotionEvent e) { final int action = e.getAction(); switch (getActionMasked(action)) { case MotionEvent.ACTION_DOWN: { // Processing the first touch // Index of the first pointer always equals to 0 final int firstIndex = 0; final int identifier = e