gesturedetector

Flutter Execute Method so long the button pressed

由 穿精又带淫゛_ 提交于 2019-12-13 19:47:24
问题 I need to Execute Method when the user press buton and during this Pressing Operation in other words the user will press the button for unkown period of time ai need to execute method during this Period of time any one have an idea how i can do that in Flutter i tried GestureDetector but there are no Option to do that also onLongPress hasn't this option becouse on Long Press triggered after the press Operation I will write psudo code for what i need: While(Button.isPressed){ //Execute Method

Android: DoubleTap doesn't work after changing orientation

由 折月煮酒 提交于 2019-12-13 18:40:16
问题 I have attached a touchlistener and gesturelistener in my onCreate() method. When I double tap my title bar in portrait mode everything works fine. But when I rotate my screen to landscape mode, the double tap isn't detected anymore. However the Listeners are still being called. And when I rotate my screen back to portrait mode, the double tap works again. My Listeners: //Add double click gesture listener to Title Bar. final GestureDetector gestureDetector = new GestureDetector(this, new

Android - Webview page requires double clicking - how to handle?

由 别说谁变了你拦得住时间么 提交于 2019-12-13 06:26:40
问题 My app is simply a WebView to display a specific website. Users are not able to simply use the Chrome app because of the inherent programming in Android which alters the functions of tapping. For simplicity, let's say the website displays a calendar and on that calendar are boxes. The boxes can either be single clicked to be selected or double clicked to be opened to display the event details. The website has coding that handles what to do if an event is single or double clicked: <div class=

Recycler View Wrongly selecting View Item while performing multi-Select

由 不问归期 提交于 2019-12-12 04:47:04
问题 I have implemented an recycler view with Multi Select successfully using addOnItemTouchListener for identifying and selecting using single and double click.When i have Less than 5 items int the recycler view,Everything works fine but when i have more data,to be exact when the recycler view starts recycling the view,my selection is going crazy and it selects differnt possition.I logged out to see the clicking position,those seems to be right but something is not right which makes my selection

Flutter code that continues to switch pics until you release screen

由 孤街醉人 提交于 2019-12-11 18:44:57
问题 i wanted to make a sample app, where it will switch from pic 1, when longpressed to pic 2, then released it will switch to pic 3, then switch back to 1, i have created a sample code, didnt work on my end using gesturedetector, it just stays on pic 1, String image; class unostate extends State<uno> { @override Widget build(BuildContext context) { return Center( child: GestureDetector( child: Image.asset( image = "assets/11.png", fit: BoxFit.none, ), onTapDown: (_){ setState(() { image =

Touch is not detected within child Fragment

由 人走茶凉 提交于 2019-12-11 03:53:14
问题 I am having an issue with onTouchListener when I attach the listener to a child fragment of a fragment. I tried many other solutions but it seems the listener ain't working. The GestureDetector code is taken from here: Fling gesture detection on grid layout main_activity.xml <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/home_drawer_layout" android:layout_width="match_parent" android:layout_height="match_parent"> <!-- The

GestureDetector and InputListener in libgdx

由 人盡茶涼 提交于 2019-12-10 15:20:32
问题 I'm new to libgdx and what I'm trying to achieve here is that I want my GestureDetector to work at the same time with InputListener. I have two buttons on the left and I need them to keep reacting even if I start swiping at the same time(multitouch). I used InputMultiplexer but it doesn't work that way I need. I checked all the return values of InputListener and GestureDetector and everything that I need returns true, also GestureInputListener is a class that implements GestureDetector

GestureDetector within a TYPE_SYSTEM_OVERLAY

由 |▌冷眼眸甩不掉的悲伤 提交于 2019-12-10 10:36:46
问题 I have created a TYPE_SYSTEM_OVERLAY and i wish to capture finger/touch events on this overlay using a service . The overlay works fine, but the problem is it cannot capture touch events when i try to incorporate the GestureDetector in it. When i tap on screen, the toast msg "onDown" didnt show.. will appreciate if anyone tells me where have i went wrong :( I have tried implement the GestureDetector outside of the OverlayView class but also no result. public class NUSLogService extends

NullPointerException in GestureDetector.onTouchEvent

由 核能气质少年 提交于 2019-12-10 02:31:18
问题 I have an activity using a GestureDetector in onTouch. Inside my layout, I also have a view implementing an onClickListener. On Android ICS, I get a NullPointerException while handling the TouchEvent. What is the cause of this error? I have seen several posts saying that onClick and onTouch don't play well together but no real explanation of the cause or a real solution to the problem, when one sees this error. Here is the code: public class FlipCardActivity extends Activity implements View

GestureDetector类及其用法

由 白昼怎懂夜的黑 提交于 2019-12-09 15:12:10
当用户触摸屏幕的时候，会产生许多手势，例如 down ， up ， scroll ， filing 等等。 一般情况下，我们知道 View 类有个 View.OnTouchListener 内部接口，通过重写他的 onTouch(View v, MotionEvent event) 方法，我们可以处理一些 touch 事件，但是这个方法太过简单，如果需要处理一些复杂的手势，用这个接口就会很麻烦（因为我们要自己根据用户触摸的轨迹去判断是什么手势）。 Android sdk 给我们提供了 GestureDetector （ Gesture ：手势 Detector ：识别）类，通过这个类我们可以识别很多的手势，主要是通过他的 onTouchEvent(event) 方法完成了不同手势的识别。虽然他能识别手势，但是不同的手势要怎么处理，应该是提供给程序员实现的。 GestureDetector 这个类对外提供了两个接口： OnGestureListener ， OnDoubleTapListener ，还有一个内部类 SimpleOnGestureListener 。 GestureDetector.OnDoubleTapListener 接口 ：用来通知 DoubleTap 事件，类似于鼠标的双击事件。 1 ， onDoubleTap(MotionEvent e) ：在 双击的第二下
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