Android Programming...: Repeating Alarm in Android Using Broad Cast Receiver

Repeating Alarm

Step 1:-

MainActivity.java

package com.example.example_repeatingalarm;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity implements OnClickListener {

AlarmManager am;

Button btn_alearm;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

btn_alearm = (Button) findViewById(R.id.btn_alearm);
btn_alearm.setOnClickListener(this);

// Repeating Alarm using Timealarm Broadcastreceiver
setRepeatingAlarm();

}

@Override
public void onClick(View v) {

switch (v.getId()) {
case R.id.btn_alearm:

Toast.makeText(getApplicationContext(), "working",
Toast.LENGTH_SHORT).show();

Intent intent = new Intent(this, TimeAlarm.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
intent, PendingIntent.FLAG_CANCEL_CURRENT);
am.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()
+ (5 * 1000), pendingIntent);

default:
break;
}

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}

public void setRepeatingAlarm() {

Intent intent = new Intent(this, TimeAlarm.class);

PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
intent, PendingIntent.FLAG_CANCEL_CURRENT);

am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(),
(2 * 1000), pendingIntent);

System.out.println("Calling Alaram...");

}

}

Step 2:-

BroadcastReceiver class (TimeAlarm.java)

package com.example.example_repeatingalarm;

import java.io.File;

import android.app.Notification;

import android.app.NotificationManager;

import android.app.PendingIntent;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

public class TimeAlarm extends BroadcastReceiver {

NotificationManager nm;

int i = 0;

File myDir;

@Override

public void onReceive(Context context, Intent intent) {

nm = (NotificationManager) context

.getSystemService(Context.NOTIFICATION_SERVICE);

CharSequence from = "Chandru";

CharSequence message = "Notification Test...";

PendingIntent contentIntent = PendingIntent.getActivity(context, 0,

new Intent(), 0);

Notification notif = new Notification(R.drawable.ic_launcher,

"simple testing...", System.currentTimeMillis());

notif.setLatestEventInfo(context, from, message, contentIntent);

nm.notify(i, notif);

i++;

}

Step 3 :-

activity_main.xml

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

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/LinearLayout1"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical" >

<LinearLayout

android:layout_width="match_parent"