Android double-click event processing

Share with you the following principles:

Activity: Main

Package COM. my. test; <br/> Import android. app. activity; <br/> Import android. content. context; <br/> Import android. OS. bundle; <br/> Import android. view. layoutinflater; <br/> Import android. view. motionevent; <br/> Import android. view. view; <br/> Import android. view. gesturedetector. ongesturelistener; <br/> Import android. view. view. ontouchlistener; <br/> Import android. widget. button; <br/> Import android. widget. viewflipper; </P> <p> public class main extends activity implements ontouchlistener {<br/> // Private viewflipper mflipper; <br/> // Private layoutinflater factory; <br/> // Private view; <br/> private button BTN; <br/> private long firtick = 0l; <br/> private long sectick = 0l; <br/> private long distance = 0l; <br/>/** called when the activity is first created. */<br/> @ override <br/> Public void oncreate (bundle savedinstancestate) {<br/> super. oncreate (savedinstancestate); <br/> setcontentview (R. layout. main); <br/> _ Init (); <br/>}< br/> void _ Init () {<br/> // factory = layoutinflater. from (this); <br/> // view = factory. inflate (R. layout. other, null); <br/> BTN = (button) findviewbyid (R. id. b1); <br/> BTN. setontouchlistener (this); <br/>}</P> <p> @ override <br/> Public Boolean ontouch (view V, motionevent event) {<br/> // todo auto-generated method stub <br/> // determine the double-click event by time difference. You can split the double-click event into two consecutive Independent Events: 1. Select; 2. Execute <br/> switch (event. getaction () {<br/> case motionevent. action_down: <br/> switch (v. GETID () {<br/> case R. id. b1: <br/> If (firtick = 0l) {<br/> firtick = system. currenttimemillis (); // time of the previous click <br/> system. out. println ("Touch"); <br/>} else if (sectick = 0l) {// The next click time <br/> sectick = system. currenttimemillis (); <br/> distance = sectick-firtick; <br/> If (distance> 0l & distance <500l) {<br/> // the time range is set freely. If it is set to true, click continuously. <br/> system. out. println ("double"); <br/> firtick = 0l; <br/> sectick = 0l; <br/>} else {<br/> // click not consecutive <br/> firtick = system. currenttimemillis (); // obtain the time of the previous Click again <br/> sectick = 0l; <br/> system. out. println ("Touch"); <br/>}</P> <p >}< br/> break; <br/> default: <br/> break; <br/>}< br/> break; </P> <p> default: <br/> break; <br/>}< br/> return false; <br/>}< br/>}

 

There is only one button in Main. XML with the ID B1

<? XML version = "1.0" encoding = "UTF-8"?> <Br/> <linearlayout <br/> xmlns: Android = "http://schemas.android.com/apk/res/android" <br/> Android: layout_width = "fill_parent" <br/> Android: layout_height = "fill_parent" <br/> Android: Orientation = "vertical" <br/> <button Android: id = "@ + ID/B1" <br/> Android: layout_width = "wrap_content" <br/> Android: layout_height = "wrap_content" <br/> Android: TEXT = "test"/> <br/> </linearlayout>

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