assistive touch for android

I. Differences between click events and touch events: Click Event: For a button, the system responds to both the button and the touch screen event; Touch event: For a button, only the touch screen event is returned; Therefore, we recommend that you use the click event to process the button control. Ii. Click Event Pro

(easyMonkey.visible(by3)) easyMonkey.touch(by3,MonkeyDevice.DOWN_AND_UP) MonkeyRunner.sleep(1) device.press('KEYCODE_BACK') 3. Summary: You can use monkeyrunner to search for controls by id, and use several basic operations such as Touch and Type of EasyMonkeyDevice to complete many basic functional tests. The advantage of using monkeyrunner is that the environment where the test program runs is real. The monkeyrunner's limitations cannot

Android Touch Gesture Basics Official Document OverviewTouch Gesture Detection BasicsGesture detection typically consists of two stages:1. Get Touch event data2. Parse the data to see if they meet some of the gestures your app supports.Related APIs:　　MotionEventCompatible version of:　　MotionEventCompat(Note that Motioneventcompat are not a replacement for the Mot

currentstatus) {// when the image is in the zoom-in or zoom-out status, controls whether the title displays if (currentstatus) {lltitle. setvisibility (view. gone);} else {lltitle. setvisibility (view. visible) ;}}) ;}else {toast. maketext (imageviewactivity. this, "image loading failed. Please try again later! ", Toast. length_short ). show () ;}@ overridepublic Boolean ontouchevent (motionevent event) {Switch (event. getaction () motionevent. action_mask) {Case motionevent. action_down: imgc

Many times, the use of touch screen fling, scroll and other gesture (gesture) operation will make the application of the user experience greatly improved, such as using scroll gestures in the browser scrolling, using fling in the reader page, etc. In the Android system, gesture recognition is achieved through the Gesturedetector.ongesturelistener interface, but William Rummaged through the official

Opening language: The recent program in a small effect, to use the touch, the results of the cloud inside the fog, and simply a good look at the Android touch mechanism, hehe.Each ViewGroup subclass in the Android system has the following methods that are closely related to the next three and touchevent processing:1) P

Methods related to Touch events in Android include dispatchTouchEvent (MotionEvent ev), onInterceptTouchEvent (MotionEvent ev), and onTouchEvent (MotionEvent ev). controls that can respond to these methods include: viewGroup, View, and Activity. Most of the controls that inherit ViewGroup are container controls, such as LinearLayout, while most of the controls that inherit View are display controls such as

This article describes the implementation of Multi-Touch (Multitouch) for Android programming. Share to everyone for your reference, specific as follows: If you are interested in developing a multi-touch program, then this article will be a good start, Android application development, the multi-

Most Android devices use touch screens, but Android devices also support keyboard operations, allowing navigation, clicking, and inputting through the keyboard. When a user uses a keyboard (or trackball), it is necessary to focus on the UI elements currently accepted, for example, highlighting a button, let the user know which UI element is being operated. Howe

Most of the time, the use of touch screen fling, scroll and other gesture (gesture) operations will greatly improve the user experience of the application, such as rolling the screen in the browser using scroll gestures, use fling to flip pages in the reader. In Android {Function onclick (){Function onclick (){Function onclick (){Function onclick (){Tagshow (Event)}}}}} "> In the system, gesture recognition

(0); // ... Many touch events later ... Use the pointer ID to find the index of the active pointer //and fetch its position int pointerindex = EVENT.F Indpointerindex (Mactivepointerid); Get the pointer ' s current position float x = event.getx (pointerindex); Float y = event.gety (pointerindex);}The action to get motionevent should use the getactionmasked () method (or a compatible version of motioneventcompat.getactionmasked (

-----Source: http://www.trinea.cn/android/touch-event-delivery-mechanism/Describes the delivery mechanism for Android touch events .Many friends of the private message asked this question, then recommend a I see the transfer mechanism to introduce the most clear foreign articles it. This article is slightly translated.

, "ACTION is up"); return true; Case (Motionevent.action_cancel): Log.d (Debug_tag, "ACTION is CANCEL"); return true; Case (Motionevent.action_outside): Log.d (Debug_tag, "movement occurred OUTSIDE Bounds" + "O F Current screen element "); return true; Default:return super.ontouchevent (event); } }The events provided by Ontouch are relatively simple, and if you need to deal with some complex gestures, it can be cumbersome to use this inter

to delete all the compiled target files and re-compile them. In particular, the kernel files are very interesting here ...... I may add this part in subsequent articles. Coming soon !!!! Next let's take a look at the touch screen. The touch screen is divided into XXX points, and XXXX are available ...... Let's give a brief introduction ...... I think the difference between the

Previous articles introduced the Android Touch event (MotionEvent) transfer mechanism from the Framework layer. This article describes in detail some of the MotionEvent members and methods. MotionEvent is helpful for developing special effects such as drag controls or multi-point scaling controls. Mastering the MotionEvent class is also the basis for learning android