gestures

问题 I'm using C#, I have a list of Vector points and would like to try and approximate how close they look like a circle. Any ideas how to implement this or if someone else has? 回答1: 1) Pick any three points from that list, find the center of their appropriate circle We can do this, using triangle circumcircle construction method, you find the medians of all three sides (two are sufficient) and their intersection is the center of the circle. Something like this: public PointF findCenter(PointF a,

问题 I'm building a Music Player and I'm focusing on the progress bar. I was able to react to swipe gestures, but I cant limit how far that gesture goes. This is what I've done so far. I've reduced everything to the minumal: constructor(props) { super(props); this.state = { pan: new Animated.ValueXY() }; } componentWillMount() { this._panResponder = PanResponder.create({ onMoveShouldSetResponderCapture: () => true, onMoveShouldSetPanResponderCapture: () => true, onPanResponderGrant: (e,

问题 I have implemented my TabActivity with different child activities: intent = new Intent().setClass(this, MyChildTabActiviy.class); // Initialize a TabSpec for each tab and add it to the TabHost spec = getTabHost.newTabSpec("tag").setIndicator("indicator", getResources().getDrawable(R.drawable.icon)).setContent(intent); getTabHost.addTab(spec); ... So far no problems, everything works perfectly fine. I'm switching programmatically between tabs, replacing activities within tabs with

问题 I'm working on a project that requires a button to only be pressed once a translucent screen has been slid up. This allows for access to the main button (Press Me, in the picture). I would like for the top screen to be translucent so a user can see the button behind it, but I would also like to have buttons (green buttons 1, 2, and 3) on the top screen. Are there any good tutorials on this? I have looked, but haven't found much that relates a whole lot. If you have any sugguestions please let

问题 How can I simulate gestures programmatically. I get all the points and I would like my app to repeat these drawings. public void onGestureStarted(GestureOverlayView gestureOverlayView, MotionEvent motionEvent) { Log.d("TAG", "Started gesture: \n" + motionEvent.getRawX() + "\n" + motionEvent.getRawY() + "\n" + motionEvent.getEventTime()); gestures.add(new GesturePoint(motionEvent.getRawX(), motionEvent.getRawY(), 100)); } @Override public void onGesture(GestureOverlayView gestureOverlayView,

问题 UISwipeGestureRecognizer *rightRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(rightSwipeHandle:)]; rightRecognizer.direction = UISwipeGestureRecognizerDirectionRight; [rightRecognizer setNumberOfTouchesRequired:1]; [self.view addGestureRecognizer:rightRecognizer]; UISwipeGestureRecognizer *leftRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(leftSwipeHandle:)]; leftRecognizer.direction =

问题 SOLVED, solution is underneath. I want to replace buttons for navigation in webview to 2 swipe gestures - left and right swipe. This Android: How to handle right to left swipe gestures link really helped me, but I encountered problem - after implementing this code I was unable to click on links/ or scroll throught loaded webpage in webview activity(I have used 1st answer from possible answers). Then I found out that in another answer in this question is something similar - how to scroll in

问题 Just wondering is there way to have a view recognize tap gestures while it is being animated? I am working on a view that has a cashapelayer line tethered to it. When the user pans the view (pan gesture) the line follows accordingly until the user stops panning. At this point an animation is executed that brings the view back to its original position and the tether layer back as well. Now my only real problem is that while the view and the tether are animating the view doesnt respond to tap

问题 Update: See bounty for expanded question. I have a GestureDetector setup on a ListView . The ListView is an entire fragment that comes from side of window and overlays another fragment partially. I want to give user ability to swipe it close (i.e. Wunderlist is a great example of this function on right side). Here is my setup: gestureListener = new View.OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { if (gestureDetector.onTouchEvent(event)) { return true; } return

问题 I want to scroll an android mobile app page from top to bottom. I have tried with below defined coding for scroll and click for specific web element using text. It works fine. // method 1 driver.scrollTo("R"); // method 2 driver.ScrollToExact("Top"); But I need to scroll an full article page from top to bottom, without using above scroll() methods. I have tried with below coding, but scroll action doesn't happens for me. // scroll to bottom of an page ((JavascriptExecutor) driver)