Implementation method of Chronometer timer for Android control _android

Chronometer is a simple timer, you can give it a start time and take this timed, or if you don't give it a start time, it will start with your time call. By default it appears in the form of the current timer's value in "Minutes: Seconds" or "h:mm:ss", or in a set (string) format that can be used with a timer value to an arbitrary string

1. Important Attributes

Android:format: Defines the format of the time as: Hh:mm:ss

2. Important Methods

SetBase (long Base): Set countdown timer

SetFormat (String format): Sets the format for displaying the time.

Start (): Begin timing

Stop () : Stopping timing

Setonchronometerticklistener (Chronometer.onchronometerticklistener Listener): Called when the timer changes.

3. Examples

Layout file

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android= "http://schemas.android.com/apk/res/" Android "android:orientation=" vertical "android:padding=" 4dip "android:gravity=" Center_horizontal "Android:layout_
 Width= "Match_parent" android:layout_height= "match_parent" > <chronometer android:id= "@+id/chronometer" android:format= "Initial format:" android:layout_width= "Wrap_content" android:layout_height= "Wrap_content" Android:
 layout_weight= "0" android:paddingbottom= "30dip" android:paddingtop= "30dip"/> <button android:id= "@+id/start" Android:layout_width= "Wrap_content" android:layout_height= "wrap_content" android:text= "Start" > <requestFocus/&
 Gt </Button> <button android:id= "@+id/stop" android:layout_width= wrap_content "android:layout_height=" Wrap_ Content "android:text=" Stop "> </Button> <button android:id=" @+id/reset "android:layout_width=" Wrap_conten T "android:layout_height=" wrap_content "android:text="Reset" > </Button> <button android:id= "@+id/set_format" android:layout_width= "Wrap_content" android:layout _height= "wrap_content" android:text= "Formatting" > </Button> <button android:id= "@+id/clear_format" Android:la Yout_width= "Wrap_content" android:layout_height= "wrap_content" android:text= "purge format" > </Button> </ 
 Linearlayout>

Main program:

Package WJQ.

Widgetdemo;
Import android.app.Activity;
Import Android.os.Bundle;
Import Android.os.SystemClock;
Import Android.view.View;
Import Android.view.View.OnClickListener;
Import Android.widget.Button;

Import Android.widget.Chronometer;
 public class Chronometerdemo extends activity {private chronometer mchronometer; /* (non-javadoc) * @see android.app.activity#oncreate (android.os.Bundle)/@Override protected void onCreate (Bundle s
 Avedinstancestate) {//TODO auto-generated Method Stub super.oncreate (savedinstancestate);
 Setcontentview (R.layout.chronometerpage);

 Button button;

 Mchronometer = (chronometer) Findviewbyid (r.id.chronometer);
 Watch for button clicks.
 Button = (button) Findviewbyid (R.id.start);

 Button.setonclicklistener (Mstartlistener);
 Button = (button) Findviewbyid (r.id.stop);

 Button.setonclicklistener (Mstoplistener);
 Button = (button) Findviewbyid (R.id.reset);

 Button.setonclicklistener (Mresetlistener); Button = (button) Findviewbyid (r.iD.set_format);

 Button.setonclicklistener (Msetformatlistener);
 Button = (button) Findviewbyid (R.id.clear_format);
 Button.setonclicklistener (Mclearformatlistener);
 } view.onclicklistener Mstartlistener = new Onclicklistener () {public void OnClick (View v) {mchronometer.start ();

 }
 };
 View.onclicklistener Mstoplistener = new Onclicklistener () {public void OnClick (View v) {mchronometer.stop ();

 }
 }; View.onclicklistener Mresetlistener = new Onclicklistener () {public void OnClick (View v) {mchronometer.setbase (SystemC
 Lock.elapsedrealtime ());

 }
 }; View.onclicklistener Msetformatlistener = new Onclicklistener () {public void OnClick (View v) {Mchronometer.setformat ("
 Formatted time (%s));

 }
 }; View.onclicklistener Mclearformatlistener = new Onclicklistener () {public void OnClick (View v) {Mchronometer.setformat
 (null);
}
 };
 }

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