touchscreen

问题 How exactly do you intercept touchscreen events for OpenGL ES games in Android? Also, if the game is 3D, how do you know if the user touched an object in the background? Thanks. 回答1: Override onTouchEvent(MotionEvent e) into your class extending GlsurfaceView. @Override public boolean onTouchEvent(MotionEvent e) { float x = e.getX(); float y = e.getY(); switch (e.getAction()) { case MotionEvent.ACTION_MOVE: float dx = x - mPreviousX; float dy = y - mPreviousY; mRenderer.mAngleX += dx * TOUCH

问题 I am making a mobile e-commerce application that tests the user's mobile screen condition by dragging or swiping on the screen to test whether the screen is broken or not. I added an image that the user follows on the screen when dragging. i added working code but this is a bit slow when the user follows the line it erases that line bit slow but I am looking for some speed by this approach or any other. I followed many tutorials but didn't get relevant code. Note: Another method to test the

问题 I'm having a nightmare day with a broken screen , I've 'Droid Screen' with 'Ultimate Touchscreen Control' however the gestures dont seem to work for this Phones unlock it usually requires a swipe that stops however I can get it to 'click' in place , any ideas to unlock with the ADB so I can get to my messages would be a life saver 回答1: so let me be your life saver (maybe) I've broke screen in my Nexus 4 few weeks ago and I was also looking for similar answer. it's is important that it was

问题 I'm cross-compiling a touchscreen driver, which comes with an ocaml calibration application. I'm trying to compile the driver and the application for ARM, in particular, the Beagleboard, running Angström. It goes like this: ^_^[raziel@Bebop zytouch-driver-20081121]$ source /usr/local/angstrom/arm/environment-setup ^_^[raziel@Bebop zytouch-driver-20081121]$ make CC=arm-angstrom-linux-gnueabi-gcc arm-angstrom-linux-gnueabi-gcc -std=gnu99 -g -O2 -Wall -Wextra -Werror -Wstrict-prototypes

问题 Tried both programmatically and manually modify the registry for both DisableCharmsHint and DisableTLcorner to 1 under EdgeUI of immersiveShell (to disable touch screen swipe edges), after restart nothing happens. Just want to disable the swipe from edges to prevent user from accessing other application but just my application as currently opened, and will later enable the swipe edges again once my application is closed (back to normal). the application running is a windows form (not WPF) c#

问题 I have an iPad application that uses the whole screen (that is, UIStatusBarHidden is set true in the Info.plist file). The main window's and main view's frames are set to (0, 0, 768, 1024). The main view has multitouch enabled. The view controller has this code to handle touches: - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { for (UITouch *touch in touches) { CGPoint location = [touch locationInView:nil]; NSLog(@"touchesMoved at location %@", NSStringFromCGPoint(location))

问题 I have an iPad application that uses the whole screen (that is, UIStatusBarHidden is set true in the Info.plist file). The main window's and main view's frames are set to (0, 0, 768, 1024). The main view has multitouch enabled. The view controller has this code to handle touches: - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { for (UITouch *touch in touches) { CGPoint location = [touch locationInView:nil]; NSLog(@"touchesMoved at location %@", NSStringFromCGPoint(location))

问题 I'm implementing the scrolling behaviour of a touch screen UI but I'm too tired in the moment to wrap my mind around some supposedly trivial piece of math: y (distance/velocity) |******** | ****** | **** | *** | *** | ** | ** | * | * -------------------------------- x (time) f(x)->? The UI is supposed to allow the user to drag and "throw" a view in any direction and to keep it scrolling for a while even after he releases the finger from the screen. It's sort of having a momentum that depends

问题 I'm spending considerable time in making my UI to work with keyboard input only. But in the end I'm not sure whether I can rely on the assumption that Android devices all have touch screens. Is there a way to determine if an Android device has a touch screen? 回答1: You should research the existing devices and read the Android Compatibility Definition Document (CDD) and decide for yourself. I have spent some considerable time trying to figure out this problem for myself. The posters above are

问题 Background/Context: I am developing touch screen based kiosk application with JavaFX. The app integrates browser – WebView. The problem is that all user inputs have to be made through on screen keyboard (SW keyboard) It would be nice to have an option to register an event-handler on WebView/WebEngine for any HTML text input element got/lost focus, so that I could show/hide on-screen-keyboard. Even though I searched the Internet, I did not find this kind of feature. My questions: Does JavaFX /