android touch screen tablet

Keywords: android capacitive screen TP ITOPlatform Information:Kernel: linux2.6/linux3.0System: android/android4.0Platform: s5pv310 (Samsung Exynos 4210)xubin341719 (Welcome reprint, please specify the author)Android Capacitive-Touchscreen (i): The basic principle of capacitive screenAndroid Capacitive-touchscreen (ii)

When I first started learning Android, I felt that Google's documents were not good, and when we studied gestures, I felt that Google's documents were too poor. A lot of constants, properties, and methods don't even have a description. There is no description, but there are so many gestures in ongesturelistener, it does not have a description, who can understand onlongpress and onshowpress before they try.Is there a difference between onscroll and onf

Android Horizontal screen vertical screen switching problemI. Prohibit the conversion of the screenAndroid screen switch in the development of mobile phones are more common, many software in the development process in order to avoid the screen switching between the need to c

. These three events identify the most basic user touch screen operations and have a clear meaning. Although they are used every day, please note that the importance of the ACTION_DOWN event as the starting event is greater than ACTION_MOVE and ACTION_UP. If ACTION_MOVE or ACTION_UP occurs, therefore, ACTION_DOWN must have occurred. Some interaction mechanisms implemented based on the understanding of diffe

Http://www.android100.org/html/201505/24/149342.htmlUI designers need to know Android screen knowledge-Android 100 share a lot of designers and engineers are confused by the numerous screens of Android devices, I do both UI design, but also part of the Android interface layo

Android -- View, ViewGroup event (Touch event) processing mechanism Summary, androidviewgroupEvents in Android Touch event, four statuses: ACTION_DOWN --> indicates that an event starts from ACTION_DOWN when the screen is pressed.ACTION_MOVE --> indicates a mobile gesture.

);Matrix.setrotatem (Mrotationmatrix,0, MAngle,0,0, -1.0f);//Combine the rotation matrix with the projection and camera view //Note that the Mmvpmatrix factor *must is first* in order //For the matrix multiplication product to be correct.Matrix.multiplymm (Scratch,0, Mmvpmatrix,0, Mrotationmatrix,0);//Draw triangleMtriangle.draw (scratch);}If you have completed the steps described above, start the program and then drag on the screen to rotate th

TouchEvent TouchEvent three types of events: down, move, up.Where the move event is in one operation (one of the actions described here is that the user interacts with the screen, that is, the action sequence from down to up) may occur more than once.However, we think that an action sequence will contain the above three events, therefore, in the event processing is to deal with this process, and most importantly, the down event, which is the begi

than the screen, the control range if (Rect.width () >= width) {if (Rect.left > 0) {deltax =-rect . Left; } if (Rect.right Inside the Onscale remember to call: /** * Set ZOOM ratio * * Mscalematrix.postscale (scalefactor, Scalefactor, detector.getfocusx (), Detector.getfocusy ()); Checkborderandcenterwhenscale (); Setimagematrix (Mscalematrix); This is good, can be free to enlar

installation directory does not have "Platform-tools" this folder, so asked the next door of the Android development of the small partner, he said it was ADT, and then sent me his side of the environment of this folder, can be used normally.In fact, the correct solution should be:Run the Android.bat file under the Tools directory and then the following screen appears, tick the

Events in AndroidTouch events, four states: Action_down--> said the screen was pressed, an event must start from Action_downAction_move--> represents a move gestureAction_up--> means leaving the screenAction_cancel--> indicates that the cancellation gesture is normally generated by the program and is not generated by the user A action_down, n action_move,1 action_up, constitutes a multitude of events in Android.The event onclick, onscrol

StubSwitch (arg1.getaction ()) {Case Motionevent.action_down:if (Velocitytracker = = null) {Gets the speed at which gestures are sliding on the screenVelocitytracker = Velocitytracker.obtain ();Velocitytracker.addmovement (ARG1);}BreakCase Motionevent.action_move:if (Velocitytracker!= null) {Velocitytracker.addmovement (ARG1);}BreakCase Motionevent.action_cancel:Case Motionevent.action_outside:BreakCase MOTIONEVENT.ACTION_UP:int Velocityx = 0, velocityy = 0;if (Velocitytracker!= null) {Velocity

Turn: http://hi.baidu.com/xx%B9%C2%D3%B0%C6% AE %C1%E3xx/blog/item/d8257c44941db12bcefca3c1.html Let's start porting now. First, decompress your tslibonandroid file package and put it into the external \ tslibonandroid directory. in this folder, tests \ ts_calibrate.c can verify the touch screen, and analyze the situation. The Android app runs Java, so we must cr