Countdowntimer complete detailed example

Mainactivity is as follows:

Package CC. CV; import android. OS. bundle; import android. OS. countdowntimer; import android. view. view; import android. view. view. onclicklistener; import android. widget. button; import android. app. activity;/*** demo example: * countdowntimer complete and detailed example * the code is very simple, directly read the comments. ** countdowntimer is the countdown introduced by android4.0 */public class mainactivity extends activity {private button mstartbutton; private button mcancelbutton; private parameter; @ overrideprotected void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. main); Init ();} private void Init () {mcountdowntimersubclass = new countdowntimersubclass (15*1000,100 0); mstartbutton = (button) findviewbyid (R. id. startbutton); // starts countdown to mstartbutton. setonclicklistener (New onclicklistener () {@ overridepublic void onclick (view) {mcountdowntimersubclass. start () ;}}); // cancels the countdown. // when countdowntimer's start is called again, the countdown starts again. mcancelbutton = (button) findviewbyid (R. id. cancelbutton); mcancelbutton. setonclicklistener (New onclicklistener () {@ overridepublic void onclick (view) {mcountdowntimersubclass. cancel () ;}});} private class countdowntimersubclass extends countdowntimer {/*** millisinfuture countdown time * interval between countdowninterval counts every two times */Public limit (long millisinfuture, long countdowninterval) {super (millisinfuture, countdowninterval);}/*** countdown ends */@ overridepublic void onfinish () {system. out. println ("end");}/*** this method is triggered at every countdown time point * millisuntilfinished indicates the remaining time of the entire countdown */@ overridepublic void ontick (long millisuntilfinished) {long remainedseconds = millisuntilfinished/1000; system. out. println ("remaining:" + remainedseconds + "S ");}}}

Main. XML is as follows:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    >    <Button        android:id="@+id/startButton"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerHorizontal="true"        android:layout_marginTop="100dp"        android:text="start" />             <Button        android:id="@+id/cancelButton"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerHorizontal="true"        android:layout_below="@id/startButton"        android:layout_marginTop="100dp"        android:text="cancel" /></RelativeLayout>

Countdowntimer complete detailed example