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date – set android alarm at specific time

Posted by: admin June 15, 2020 Leave a comment


i set the alarm at specific time but every time i open the application it will turn on
this is the code i used :

AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this,0010000,intent,0);

Calendar time = Calendar.getInstance();
time.set(Calendar.HOUR, 5);
time.set(Calendar.MINUTE, 59);
time.set(Calendar.SECOND, 0);

How to&Answers:

Alright, you need to set the alarm to ring the next time it is 5:59:00.
You do this by getting the current time, if its before 5:59:00, set the alarm, if its after 5:59:00 then add a day and set the alarm. Do it like so:

import java.util.Calendar;
import java.util.Date;

public void onCreate(Bundle savedInstanceState) {
    setContentView(new Panel(this));

    Date dat  = new Date();//initializes to now
    Calendar cal_alarm = Calendar.getInstance();
    Calendar cal_now = Calendar.getInstance();
    cal_alarm.set(Calendar.HOUR_OF_DAY,5);//set the alarm time
    cal_alarm.set(Calendar.MINUTE, 59);
    if(cal_alarm.before(cal_now)){//if its in the past increment
    //SET YOUR AlarmManager here


I wanted to give you a buildable example, but i don’t fully understand alarmmanager yet, so this is what you have. Built on eclipse 3.5.2 with ADK 15


Instead of placing this code in onCreate function, place it inside any button event or any other event which will be called only on user interaction.
I think, that’ll do.

PendingIntent pendingIntent =  PendingIntent.getBroadcast(this,0010000,intent,0);

add this ‘cancel’ method to your code. this will cancel the previous alarm before setting the new one.