Android CountDownTimer Example

 Hello Friends Today I will write a code for CountDownTimer .

STEP 1:  Create a project TimerExample

STEP 2: Write this code in MainActivity

import android.os.Bundle;
import android.os.CountDownTimer;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {
private CountDownTimer countDownTimer;

private long starttime = 3600 * 1000;
private final long interval = 1 * 1000;
private int secs;
private int hours;
private int minutes;
private int seconds;
private long remainingmillisec;
private long total;
private TextView tvtimer;
private Button start,pause;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvtimer=(TextView)findViewById(R.id.tv_timer);
start=(Button)findViewById(R.id.buttonstart);
pause=(Button)findViewById(R.id.buttonpause);




start.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Log.d("Startime", "KK"+starttime);
countDownTimer = new MyCountDownTimer(starttime, interval);
secs = (int) (starttime / 1000);
hours=secs/3600;
minutes=(secs%(60*60)/60);
seconds=(secs%(60*60)%60);
tvtimer.setText("" + String.format("%02d", hours)+ ":"+ String.format("%02d", minutes) + ":"+ String.format("%02d", seconds));
countDownTimer.start();

}
});
pause.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
countDownTimer.cancel();

starttime=remainingmillisec;
Log.d("StoTime", "KK"+starttime);
}
});

}
public class MyCountDownTimer extends CountDownTimer {
public MyCountDownTimer(long starttime, long interval) {

super(starttime, interval);
}

@Override
public void onFinish() {
tvtimer.setText("Time's up!");


}
public void resume(){}
@Override
public void onTick(long millisUntilFinished) {

remainingmillisec=millisUntilFinished;
secs=(int)(millisUntilFinished/1000);

hours=secs/3600;
minutes=(secs%(60*60)/60);
    seconds=(secs%(60*60)%60);

tvtimer.setText("" + String.format("%02d", hours) + ":"+ String.format("%02d", minutes) + ":"+ String.format("%02d", seconds));

}
}


}

STEP 3: Write this code in activity_main  xml file

<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"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity" >

    <TextView

        android:id="@+id/tv_timer"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="63dp"

        android:text="01:00:00"

        android:textAppearance="?android:attr/textAppearanceMedium" />

    <Button

        android:id="@+id/buttonstart"

        android:layout_width="100dp"

        android:layout_height="wrap_content"

        android:layout_below="@+id/tv_timer"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="56dp"

        android:textStyle="bold"

        android:text="Start" />

    <Button

        android:id="@+id/buttonpause"

        android:layout_width="100dp"

        android:layout_height="wrap_content"

     android:layout_centerHorizontal="true"

        android:layout_below="@+id/buttonstart"

        android:layout_marginTop="29dp"

         android:textStyle="bold"

        android:text="Pause" />

</RelativeLayout>

 STEP 4: Write this code in manifest  file

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.ritesh.timerexample"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="9" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.ritesh.timerexample.MainActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

Run The Project .