Android Alarm

--> Android Alarm Example Code

AlarmActivity.java Code

package android.example.alarm;

import java.util.Calendar;

import android.app.Activity;

import android.app.AlarmManager;

import android.app.PendingIntent;

import android.content.Intent;

import android.os.Bundle;

import android.os.SystemClock;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

public class AlarmActivity extends Activity {

      Toast mToast;

     

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

       

     // Watch for button clicks.

        Button button = (Button)findViewById(R.id.one_shot);

        button.setOnClickListener(mOneShotListener);

       

        button = (Button)findViewById(R.id.start_repeating);

        button.setOnClickListener(mStartRepeatingListener);

       

        button = (Button)findViewById(R.id.stop_repeating);

        button.setOnClickListener(mStopRepeatingListener);

       

    } // onCreate

   

    private OnClickListener mOneShotListener = new OnClickListener() {

        public void onClick(View v) {

            // When the alarm goes off, we want to broadcast an Intent to our

            // BroadcastReceiver.  Here we make an Intent with an explicit class

            // name to have our own receiver (which has been published in

            // AndroidManifest.xml) instantiated and called, and then create an

            // IntentSender to have the intent executed as a broadcast.

            Intent intent = new Intent(AlarmActivity.this, OneShotAlarm.class);

            PendingIntent sender = PendingIntent.getBroadcast(AlarmActivity.this,

                    0, intent, 0);

            // We want the alarm to go off 30 seconds from now.

            Calendar calendar = Calendar.getInstance();

            calendar.setTimeInMillis(System.currentTimeMillis());

            calendar.add(Calendar.SECOND, 30);

            // Schedule the alarm!

            AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);

            am.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), sender);

            // Tell the user about what we did.

            if (mToast != null) {

                mToast.cancel();

            }

            mToast = Toast.makeText(AlarmActivity.this, R.string.one_shot_scheduled,

                    Toast.LENGTH_LONG);

            mToast.show();

        }

    }; // onClickListener

   

    private OnClickListener mStartRepeatingListener = new OnClickListener() {

        public void onClick(View v) {

            // When the alarm goes off, we want to broadcast an Intent to our

            // BroadcastReceiver.  Here we make an Intent with an explicit class

            // name to have our own receiver (which has been published in

            // AndroidManifest.xml) instantiated and called, and then create an

            // IntentSender to have the intent executed as a broadcast.

            // Note that unlike above, this IntentSender is configured to

            // allow itself to be sent multiple times.

            Intent intent = new Intent(AlarmActivity.this, RepeatingAlarm.class);

            PendingIntent sender = PendingIntent.getBroadcast(AlarmActivity.this,

                    0, intent, 0);

           

            // We want the alarm to go off 30 seconds from now.

            long firstTime = SystemClock.elapsedRealtime();

            firstTime += 15*1000;

            // Schedule the alarm!

            AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);

            am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,

                            firstTime, 15*1000, sender);

            // Tell the user about what we did.

            if (mToast != null) {

                mToast.cancel();

            }

            mToast = Toast.makeText(AlarmActivity.this, R.string.repeating_scheduled,

                    Toast.LENGTH_LONG);

            mToast.show();

        }

    };

    private OnClickListener mStopRepeatingListener = new OnClickListener() {

        public void onClick(View v) {

            // Create the same intent, and thus a matching IntentSender, for

            // the one that was scheduled.

            Intent intent = new Intent(AlarmActivity.this, RepeatingAlarm.class);

            PendingIntent sender = PendingIntent.getBroadcast(AlarmActivity.this,

                    0, intent, 0);

           

            // And cancel the alarm.

            AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);

            am.cancel(sender);

            // Tell the user about what we did.

            if (mToast != null) {

                mToast.cancel();

            }

            mToast = Toast.makeText(AlarmActivity.this, R.string.repeating_unscheduled,

                    Toast.LENGTH_LONG);

            mToast.show();

        }

    };

   

}

OneShotAlarm.java Code 

package android.example.alarm;

import android.content.Context;

import android.content.Intent;

import android.content.BroadcastReceiver;

import android.widget.Toast;

// Need the following import to get access to the app resources, since this

// class is in a sub-package.

/**

 * This is an example of implement an {@link BroadcastReceiver} for an alarm that

 * should occur once.

 * <p>

 * When the alarm goes off, we show a <i>Toast</i>, a quick message.

 */

public class OneShotAlarm extends BroadcastReceiver

{

    @Override

    public void onReceive(Context context, Intent intent)

    {

        Toast.makeText(context, R.string.one_shot_received, Toast.LENGTH_SHORT).show();

    }

}

RepeatingAlarm.java Code

package android.example.alarm;

// Need the following import to get access to the app resources, since this

// class is in a sub-package.

import android.content.Context;

import android.content.Intent;

import android.content.BroadcastReceiver;

import android.widget.Toast;

/**

 * This is an example of implement an {@link BroadcastReceiver} for an alarm that

 * should occur once.

 */

public class RepeatingAlarm extends BroadcastReceiver

{

    @Override

    public void onReceive(Context context, Intent intent)

    {

        Toast.makeText(context, R.string.repeating_received, Toast.LENGTH_SHORT).show();

    }

}

main.xml  Code

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

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

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:background="#fcf253"

    android:orientation="vertical" >

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:text="@string/hello"

        android:textColor="#FF0000"

        android:textSize="30dp" />

    <TextView

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_weight="0"

        android:paddingBottom="4dip"

        android:text="@string/alarm_controller"

        android:textColor="#0000FF" />

    <Button

        android:id="@+id/one_shot"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="5dp"

        android:text="@string/one_shot_alarm" >

        <requestFocus />

    </Button>

    <Button

        android:id="@+id/start_repeating"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="5dp"

        android:text="@string/start_repeating_alarm" />

    <Button

        android:id="@+id/stop_repeating"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="5dp"

        android:text="@string/stop_repeating_alarm" />

    <AnalogClock

        android:id="@+id/analogClock1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal" />

    <DigitalClock

        android:id="@+id/digitalClock1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:textSize="30dp"

        android:textColor="#198101"

        android:layout_gravity="center_horizontal"

        android:text="DigitalClock" />

</LinearLayout>

AndroidManifest.xml code

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

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

    package="android.example.alarm"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="10" />

    <application

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name" >

        <activity

            android:name=".AlarmActivity"

            android:label="@string/app_name" >

            <intent-filter>

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

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

            </intent-filter>

        </activity>

       

       

       <!-- Alarm Samples -->

        <receiver

            android:name=".OneShotAlarm"

            android:process=":remote" />

        <receiver

            android:name="android.example.alarm.RepeatingAlarm"

            android:process=":remote" />

        <activity

            android:name="android.example.alarm.AlarmController"

            android:label="@string/activity_alarm_controller">

            <intent-filter>

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

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

            </intent-filter>

        </activity>

       

    </application>

</manifest>

strings.xml  Code

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

<resources>

    <string name="hello">Alarm Example</string>

    <string name="app_name">Android Alarm </string>

       

    <string name="activity_alarm_controller">App/Alarm/Alarm Controller</string>   

    <string name="alarm_controller">This demonstrates how to schedule and handle

        one-shot and repeating alarms.</string>

       

    <string name="one_shot_alarm">One Shot Alarm </string>

    <string name="start_repeating_alarm">Start Repeating Alarm</string>

    <string name="stop_repeating_alarm">Stop Repeating Alarm</string>

   

    <string name="one_shot_scheduled">One-shot alarm will Show in 30 seconds based on

        the real time clock.  Try changing the current time before then!</string>

    <string name="one_shot_received">The one-shot Alarm Notification !!!</string>

    <string name="repeating_received">The repeating alarm SHOW in every 15 seconds</string>

   

    <string name="repeating_scheduled">Repeating alarm will show in 15 seconds and

        every 15 seconds after based on the elapsed realtime clock</string>

   

    <string name="repeating_unscheduled">Repeating alarm has been unscheduled</string>

     

</resources>

Download Android Alarm Example Code
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