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2014/10/16 ¤W¤È 08:19:36
android Programming Glossary: motionHow to determine when Fragment becomes visible in ViewPager http://stackoverflow.com/questions/10024739/how-to-determine-when-fragment-becomes-visible-in-viewpager cache the second and make it visible when the user starts motion gesture. So onResume event is fired in the second fragment long..
Android - HorizontalScrollView within ScrollView Touch Handling http://stackoverflow.com/questions/2646028/android-horizontalscrollview-within-scrollview-touch-handling method to only intercept the touch event if the Y motion is the X motion. It seems like the default behavior of a ScrollView.. to only intercept the touch event if the Y motion is the X motion. It seems like the default behavior of a ScrollView is to intercept.. is to intercept the touch event whenever there is ANY Y motion. So with the fix the ScrollView will only intercept the event..
Developing an Android Homescreen http://stackoverflow.com/questions/3467461/developing-an-android-homescreen Imagine you capture the down value of a action down motion event when you touch the screen. Then you move your finger and.. method JUST determines whether we want to intercept the motion. If we return true onTouchEvent will be called and we do the.. and he is moving his finger. We want to intercept this motion. final int action ev.getAction if action MotionEvent.ACTION_MOVE..
http://stackoverflow.com/questions/4969226/android-homescreen method JUST determines whether we want to intercept the motion. If we return true onTouchEvent will be called and we do the.. and he is moving his finger. We want to intercept this motion. final int action ev.getAction if action MotionEvent.ACTION_MOVE.. TOUCH_STATE_REST break The only time we want to intercept motion events is if we are in the drag mode. return mTouchState TOUCH_STATE_REST..
How to detect shake event with android? http://stackoverflow.com/questions/5271448/how-to-detect-shake-event-with-android 800 There are some other methods too to detect shake motion. look at this link. If that link does not work or link is dead..
Strange behavior with android orientation sensor http://stackoverflow.com/questions/5577334/strange-behavior-with-android-orientation-sensor 25. I use rotation matrices instead of Euler angles in my motion sensing application. Rotation matrices http gentlenav.googlecode.com..
Image in Canvas with touch events http://stackoverflow.com/questions/5743328/image-in-canvas-with-touch-events to show image in canvas on screen but I have problems with motion onTouch events zoom pan . I need canvas because I will render..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare same movement. I extract the pitch roll and yaw using self.motionManager startDeviceMotionUpdatesToQueue NSOperationQueue currentQueue.. currentQueue withHandler ^ CMDeviceMotion motion NSError error CMAttitude attitude motion.attitude NSLog @ pitch.. ^ CMDeviceMotion motion NSError error CMAttitude attitude motion.attitude NSLog @ pitch f roll f yaw f attitude.pitch attitude.roll..
Indoor Positioning System based on Gyroscope and Accelerometer http://stackoverflow.com/questions/7499959/indoor-positioning-system-based-on-gyroscope-and-accelerometer a known GPS position using the 2 sensors accelerometer for motion and Gyro for directions track the phone when moving. And display..
Android How to draw a smooth line following your finger http://stackoverflow.com/questions/8287949/android-how-to-draw-a-smooth-line-following-your-finger that you needed to change the following to avoid duplicate motion events public boolean onTouch View view MotionEvent event if..
How to determine when Fragment becomes visible in ViewPager http://stackoverflow.com/questions/10024739/how-to-determine-when-fragment-becomes-visible-in-viewpager the second fragment when the first is visible in order to cache the second and make it visible when the user starts motion gesture. So onResume event is fired in the second fragment long before it becomes actually visible and i try to find event..
Android - HorizontalScrollView within ScrollView Touch Handling http://stackoverflow.com/questions/2646028/android-horizontalscrollview-within-scrollview-touch-handling out. On my ScrollView I needed to override the onInterceptTouchEvent method to only intercept the touch event if the Y motion is the X motion. It seems like the default behavior of a ScrollView is to intercept the touch event whenever there is ANY.. I needed to override the onInterceptTouchEvent method to only intercept the touch event if the Y motion is the X motion. It seems like the default behavior of a ScrollView is to intercept the touch event whenever there is ANY Y motion. So with.. X motion. It seems like the default behavior of a ScrollView is to intercept the touch event whenever there is ANY Y motion. So with the fix the ScrollView will only intercept the event if the user is deliberately scrolling in the Y direction and..
Developing an Android Homescreen http://stackoverflow.com/questions/3467461/developing-an-android-homescreen I have a HTC G1 my sreen is 320 px in width and 480 px in height. Imagine you capture the down value of a action down motion event when you touch the screen. Then you move your finger and the screen should move in exactly the same way so you have.. public boolean onInterceptTouchEvent MotionEvent ev This method JUST determines whether we want to intercept the motion. If we return true onTouchEvent will be called and we do the actual scrolling there. Shortcut the most recurring case.. the most recurring case the user is in the dragging state and he is moving his finger. We want to intercept this motion. final int action ev.getAction if action MotionEvent.ACTION_MOVE mTouchState TOUCH_STATE_REST return true final float..
http://stackoverflow.com/questions/4969226/android-homescreen public boolean onInterceptTouchEvent MotionEvent ev This method JUST determines whether we want to intercept the motion. If we return true onTouchEvent will be called and we do the actual scrolling there. Shortcut the most recurring case the.. the most recurring case the user is in the dragging state and he is moving his finger. We want to intercept this motion. final int action ev.getAction if action MotionEvent.ACTION_MOVE mTouchState TOUCH_STATE_REST return true final float.. case MotionEvent.ACTION_UP Release the drag mTouchState TOUCH_STATE_REST break The only time we want to intercept motion events is if we are in the drag mode. return mTouchState TOUCH_STATE_REST @Override public boolean onTouchEvent MotionEvent..
How to detect shake event with android? http://stackoverflow.com/questions/5271448/how-to-detect-shake-event-with-android threshold is defined as private static final int SHAKE_THRESHOLD 800 There are some other methods too to detect shake motion. look at this link. If that link does not work or link is dead look at this web archive . . Thanks. share improve this..
Strange behavior with android orientation sensor http://stackoverflow.com/questions/5577334/strange-behavior-with-android-orientation-sensor and roll Euler angles . This video explains why see at 38 25. I use rotation matrices instead of Euler angles in my motion sensing application. Rotation matrices http gentlenav.googlecode.com files DCMDraft2.pdf Rotation matrices work like a charm...
Image in Canvas with touch events http://stackoverflow.com/questions/5743328/image-in-canvas-with-touch-events able to use canvas. I have tried SurfaceView and was able to show image in canvas on screen but I have problems with motion onTouch events zoom pan . I need canvas because I will render the image in my code. Can someone please show me the right..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare And after that the user should be able to replicate the same movement. I extract the pitch roll and yaw using self.motionManager startDeviceMotionUpdatesToQueue NSOperationQueue currentQueue withHandler ^ CMDeviceMotion motion NSError error.. using self.motionManager startDeviceMotionUpdatesToQueue NSOperationQueue currentQueue withHandler ^ CMDeviceMotion motion NSError error CMAttitude attitude motion.attitude NSLog @ pitch f roll f yaw f attitude.pitch attitude.roll attitude.yaw.. NSOperationQueue currentQueue withHandler ^ CMDeviceMotion motion NSError error CMAttitude attitude motion.attitude NSLog @ pitch f roll f yaw f attitude.pitch attitude.roll attitude.yaw I'm thinking that I could store these values..
Indoor Positioning System based on Gyroscope and Accelerometer http://stackoverflow.com/questions/7499959/indoor-positioning-system-based-on-gyroscope-and-accelerometer Gyroscope. My idea is that from a starting reference point a known GPS position using the 2 sensors accelerometer for motion and Gyro for directions track the phone when moving. And display on a map when the user is going. But the problem is that..
Android How to draw a smooth line following your finger http://stackoverflow.com/questions/8287949/android-how-to-draw-a-smooth-line-following-your-finger point.x point.y canvas.drawPath path paint Also I found that you needed to change the following to avoid duplicate motion events public boolean onTouch View view MotionEvent event if event.getAction MotionEvent.ACTION_UP Point point new Point..
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