Android timer chronometer

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Activity Code:

Package cn.com. chenzheng_java; </P> <p> Import Java. util. timer; <br/> Import Java. util. timertask; </P> <p> Import android. app. activity; <br/> Import android. OS. bundle; <br/> Import android. OS. handler; <br/> Import android. OS. systemclock; <br/> Import android. util. log; <br/> Import android. view. view; <br/> Import android. widget. button; <br/> Import android. widget. chronometer; <br/>/** <br/> * @ description chronom Eter timer application instance <br/> * @ author chenzheng_java <br/> * @ since 2011/03/17 <br/> */<br/> public class chronometeractivity extends activity {<br/> chronometer; </P> <p> timer = new timer (); <br/> timertask task = new timertask () {</P> <p> @ override <br/> Public void run () {<br/> chronometer. stop (); <br/> log. I ("notification", "Timing ends"); <br/>}< br/> }; </P> <p> @ override <br/> protected void oncreate (B Undle savedinstancestate) {<br/> super. oncreate (savedinstancestate); <br/> setcontentview (R. layout. chronometer); </P> <p> chronometer = (chronometer) findviewbyid (R. id. chronometer1); <br/> button = (button) findviewbyid (R. id. button_ch); </P> <p> button. setonclicklistener (new view. onclicklistener () {<br/> @ override <br/> Public void onclick (view v) {<br/>/** <br/> * systemclock. elapsedrealtime () is obtained from startup The start time. After it is set, the timer starts timing from. <br/> * systemclock. currentthreadtimemillis () gets the running time of the current thread <br/> * systemclock. setcurrenttimemillis (long millis) sets the current time <br/> * chronometer. the setbase () method can be used to set the start time of the Current timer <br/> */<br/> chronometer. setbase (systemclock. elapsedrealtime (); <br/>/** <br/> * set the actual format. You can specify a string containing % S, then chronometer <br/> * will automatically place the MM: SS time at your first % s location. <Br/> */<br/> chronometer. setformat ("Current Time: % s"); <br/> // start <br/> chronometer. start (); <br/> log. I ("notification", "Start Time"); <br/> handler = new handler (); <br/> handler. post (New runnable () {</P> <p> @ override <br/> Public void run () {<br/> timer. schedule (task, 10000); <br/>}< br/>}); <br/>}< br/> }); </P> <p >}< br/>

Chronometer. xml
<? XML version = "1.0" encoding = "UTF-8"?> <Br/> <linearlayout xmlns: Android = "http://schemas.android.com/apk/res/android" <br/> Android: layout_width = "match_parent" Android: layout_height = "match_parent" <br/> Android: orientation = "vertical"> <br/> <chronometer Android: Id = "@ + ID/chronometer1" Android: text = "chronometer" Android: gravity = "center_horizontal" <br/> Android: layout_width = "match_parent" Android: layout_height = "wrap_content"> </chronometer> <br/> <button Android: TEXT = "click" Android: Id = "@ + ID/button_ch" <br/> Android: layout_width = "wrap_content" Android: layout_height = "wrap_content"> </button> <br/> </linearlayout> <br/>

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Chronometer is a timer which we can set. The main methods are:

We can also see that we can register a chronometer. onchronometerticklistener event. This event will be triggered whenever the chronometer time changes, that is, it will be triggered once every second.