gesture

Swipe detection for each row of listview

由 ⅰ亾dé卋堺 提交于 2019-12-05 09:46:10
问题 I have a list of videos located in the sd-card. At this point, I just need help in creating gestures or swipe detection for each row in the list view. Thanks to this question at stackoverflow Fling gesture detection on grid layout, I implemented the gesture on the listview. It now easily detects when the user swipes in the right direction or left direction. But this gesture is for the entire listview. I just want to know how can I implement this swipe detection for individual rows. For

How to write and read text from gesture input in android?

由 杀马特。学长 韩版系。学妹 提交于 2019-12-05 09:25:37
问题 Suppose,i want to write a word named "test" using gesture on the screen and then segment it as letters(t,e,s,t). I Google for it and not found any helpful link to write a word using gesture and then segment the letters from the word.Any helpful link or tutorial over this topic will be thankful..(Currently i do some code which only write a letter at a time,a word can't,and then how to segment this text i can't understand) my code is public class GestureTest extends Activity implements

Generating events for gesture-controlled websites

由 早过忘川 提交于 2019-12-05 09:22:53
I am very happy that I got the opportunity to work on a website that is gesture-based. I have a few inspiration for this: link I visited lot of websites and googled it, Wikipedia and gitHub also didn't help much. There is not much information provided as these technologies are in nascent stages. I think I will have to use some js for this project gesture.js (our custom javascript code) reveal.js (Frame work for slideshow) My questions are how come gestures generate events, how does my JavaScript interact with my webcam? Do I have to use some API or algorithms? I am not asking for code. I am

How to determine if mouse is moving clockwise or counterclockwise?

由 ≡放荡痞女 提交于 2019-12-05 04:56:32
问题 I have an MFC appplication where the user have to move the mouse around a circle circonference with a dragging mouvement. I need to retrieve the number of degrees during this mouse drag "rotation" and I need to know if it's clockwise or counterclockwise. At first, to determine the rotation direction, I was comparing x-coordinnate between the current mouse position and the mouse position where the user clicked to initiate the dragging. That works well until the user rotate over 180 degrees.

UITapGestureRecognizer not work when I animate the UIImageView

由 我只是一个虾纸丫 提交于 2019-12-05 03:32:22
When I want to animate the UIImageView , the UITapGestureRecognizer added to it can not work. WHY??? -(void) testTap:(id)sender { NSLog(@"Test tap..."); } -(void) testSlide { UITapGestureRecognizer* testTap = [[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(testTap:)] autorelease]; testTap.numberOfTapsRequired = 2; UIImageView* imageView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"tip_slide"]] autorelease]; [imageView setFrame:CGRectMake(40, 40, 200, 200)]; imageView.userInteractionEnabled = YES; imageView.multipleTouchEnabled = YES; [imageView

How to have multiple scrollViews in one scrollView

由 吃可爱长大的小学妹 提交于 2019-12-05 02:52:54
问题 I'd like to have one big scrollview with horizontal scrolling enabled. Within this scrollView I'd like to have (let's say) 5 other scrollviews which can be scrolled vertical. Can anyone point me in the right direction for how to handle the touchevents? I'm thinking of making two gesturerecognizer (1 for tap and 1 for pan) and use the delta of the X and Y values for calculating a horizontal or vertical swipe. After I check the direction I set the big scroller or one of the scrollers to enable

ios7 new pan gesture to go back in navigation stack does not clear tableview selection

由 落花浮王杯 提交于 2019-12-05 02:37:05
I have a Notes-like app: uitableviewcontroller showing up individual notes by pushing them onto navigation stack). And I decided to use an ios7 Back button and a pan gesture recognizer coming with it. My only modification is removing text from the button by setting navigationItem title of the from-controller to an empty string before pushing the detail-view-controller, as it is advised at https://stackoverflow.com/questions/18870128/ios-7-navigation-bar-custom-back-button-without-title The button itself works just fine, but when I am going back from my note to the notes table view by means of

Disabling Pan Gesture if out of bounds detected

由 自作多情 提交于 2019-12-05 00:05:02
问题 I have a UIView I am trying to move up and down the screen, however I only wish to enable it to pan so that you cannot drag the view down when it is in its normal position (0, 0) I tried to detect when the recognizer's center is not half the height of the view, however the view is then immovable, and the center is always half the height (230 in this case). Any ideas? - (IBAction)panDetected:(UIPanGestureRecognizer *)recognizer { CGPoint translation = [recognizer translationInView:self.view];

Flutter Zoomable Widget

由 两盒软妹~` 提交于 2019-12-04 22:33:08
What I want to build is a widget that can make its child widget zoomable similar to the zoomable behavior. Gestures I want to cover are Pinch To Zoom Double Tap to Zoom Tap to get the local Position of the widget Here is my widget plan: ZoomableWidget( child: // My custom Widget which should be zoomable. ) Here is my current progress: import 'package:flutter/material.dart'; import 'package:flutter/widgets.dart'; import 'package:vector_math/vector_math_64.dart'; class ZoomableWidget extends StatefulWidget { final Widget child; const ZoomableWidget({Key key, this.child}) : super(key: key);

Gesture Detector not working

由 久未见 提交于 2019-12-04 18:02:01
问题 I has the following GestureListener: public class BookListener extends SimpleOnGestureListener implements OnTouchListener { private LibraryActivity main; private Book book; private GestureDetector gesture; public BookListener(Book book, LibraryActivity main) { this.main = main; this.book = book; gesture = new GestureDetector(main,this); } public boolean onDoubleTap(MotionEvent e) { main.showInfo(book); return true; } public boolean onSingleTapConfirmed(MotionEvent e) { main.openBook(book
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