multi-touch | 易学教程

Manipulation and Touch events not firing, but mouse events do?

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问题 I have a Samsung LD220Z multi touch monitor, and when I'm experimenting with some WPF and touch features the touch events arent firing. The mouse down event seems to be firing however. Does this mean that I have to take into account that not all touch screen behave the same, and how do I get the touch inputs on my screen? I've tried the Windows 7 Touch pack that microsoft released. And the multi touch features seems to work there. Any suggestion on how to proceed with this? 回答1: Event

How to force iPhone/iPod touch to handle more than 5 touches at the same time?

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问题 I would like to develop a multi-touch (up to 8 fingers) application for iPhone/iPod Touch. But during testing on my 1st gen iPod Touch once I put the 6th finger weird things started to happen. I don't get Touch Began for the 6th finger nor Touch Ended/Cancelled for the first 5 fingers. Do you know of any workaround for this? Does it behave the same on your iPhones/iPods? Would it work on G1 on Android? Thanks 回答1: You can't. If you need that functionality you should file a feature request

Android 3 finger touch detection

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问题 I am successfully able to record the coordinates of the two fingers being touched on the screen using the following code: case MotionEvent.ACTION_MOVE: Log.d("TOUCH", "test ACTION MOVE" + event.getPointerCount()); Log.d("TOUCH", "test ACTION MOVE ID" + event.getPointerId(0) + " "+event.getPointerId(1)); if(event.getPointerCount()==3) { x0 = (int) event.getX(event.getPointerId(0)); y0 = (int) event.getY(event.getPointerId(0)); x1 = (int) event.getX(event.getPointerId(1)); y1 = (int) event.getY

Is it possible to pinch to zoom in cordova

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There is not a lot of information on this, and the little that I have been able to find is very vague and unhelpful. I imply want a page in my cordova/phonegap app to have an image that can be pinched on to zoom in and pan around. Is this possible and if so, How do I do it? In the native code just after this line super.loadUrl(Config.getStartUrl()); Add this WebSettings settings = super.appView.getSettings(); settings.setBuiltInZoomControls(true); settings.setDisplayZoomControls(true); settings.setSupportZoom(true); You'll need this in native part import android.webkit.WebSettings; And in the

Android onscreen joystick issues

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So I'm trying to build a game with an on-screen joystick that moves a bitmap around the screen. But when I hold the joystick down in any direction and keep it there, the bitmap will stop moving as well. Its only when I am moving the joystick does the bitmap move. Basically I want to be able to hold down the joystick in say the left position and have the bitmap move left until I let go. Everything else in the code works. Any suggestions? public boolean onTouch(View v, MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_DOWN) _dragging = true; else if (event.getAction() ==

Is it possible to pinch to zoom in cordova

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问题 There is not a lot of information on this, and the little that I have been able to find is very vague and unhelpful. I imply want a page in my cordova/phonegap app to have an image that can be pinched on to zoom in and pan around. Is this possible and if so, How do I do it? 回答1: In the native code just after this line super.loadUrl(Config.getStartUrl()); Add this WebSettings settings = super.appView.getSettings(); settings.setBuiltInZoomControls(true); settings.setDisplayZoomControls(true);

How do I enable touch on multiple buttons simultaneously in react native?

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I need that when I am touching and holding one button then I should also be able to touch on the button 1. <View> <View onStartShouldSetResponder={()=>this.console("Button 2 Clicked")}> <Text>BUTTON 2</Text> </View> <TouchableOpacity onPressIn={()=>this.console('Button 1 pressed')} onPressOut={()=>this.console('Button 1 released')}> <View> <Text>BUTTON 1</Text> </View> </TouchableOpacity> </View> Basically, I have a screen where I can record a video by tapping and holding the record button(Button 1). On the same screen, I have a flip camera button (Button 2). I want that I should be able to

Can Processing handle multi-touch?

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问题 I am new to Processing and I would like to run my sketch in Android mode. I want it to support multiple touches simultaneously. I was wondering if someone can guide me on this question: How can I make my sketch support multiple touches? 回答1: Here is a full example: /* * * androidMultiTouch.pde * Shows the basic use of MultiTouch Events * */ //----------------------------------------------------------------------------------------- // IMPORTS import android.view.MotionEvent; //----------------

android: how can I verify, that device support multitouch?

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How can I verify, that device support multitouch event? If device have resistent display, multitouch is not possible. Is that way to find out, what kind of display is in device, or if device support multitouch? Thanks. If you need multitouch, include: <uses-feature android:name="android.hardware.touchscreen.multitouch" /> in your manifest . Your application will not be listed in the Market for devices that lack multitouch. If you wish to conditionally support multitouch, use PackageManager and hasSystemFeature() to see if android.hardware.touchscreen.multitouch is available. A quick example:

Android onscreen joystick issues

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问题 So I'm trying to build a game with an on-screen joystick that moves a bitmap around the screen. But when I hold the joystick down in any direction and keep it there, the bitmap will stop moving as well. Its only when I am moving the joystick does the bitmap move. Basically I want to be able to hold down the joystick in say the left position and have the bitmap move left until I let go. Everything else in the code works. Any suggestions? public boolean onTouch(View v, MotionEvent event) { if