I want to create a repeating alarm from AlarmManager which is triggered at 21:00 every day to show a notification. So i create a service and declare that in manifest, in the service class i wrote a method for schedule repeating alarms.
public static void setRecurringAlarm(Context context) {
AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
Intent i = new Intent(context, NotificationService.class);
PendingIntent pi = PendingIntent.getService(context, 0, i, 0);
am.cancel(pi);
Calendar updateTime = Calendar.getInstance();
updateTime.setTimeZone(TimeZone.getDefault());
updateTime.set(Calendar.HOUR_OF_DAY, 21);
updateTime.set(Calendar.MINUTE, 00);
updateTime.set(Calendar.SECOND, 00);
am.setInexactRepeating(AlarmManager.RTC_WAKEUP,
updateTime.getTimeInMillis(),
AlarmManager.INTERVAL_FIFTEEN_MINUTES, pi);
}
(For test i set the delay INTERVAL_FIFTEEN_MINUTES).
I call this method at onResume() of my splash screen activity and in a BroadcastReceiver that is set up to receive BOOT_COMPLETED.
#Override
protected void onResume() {
super.onResume();
NotificationService.setRecurringAlarm(this);
}
this is my BroadcastReceicer :
public class NotificationBootReceiver extends BroadcastReceiver {
public void onReceive(Context context, Intent intent) {
NotificationService.setRecurringAlarm(context);
}
}
and this is my manifest :
<receiver android:name=".notification.NotificationBootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<service android:name=".notification.NotificationService" />
</application>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
the problem is every time i open the app and splashscreen running the alarm triggered and notification will be shown.
Related
I've used an alarmManager to send daily notification. Since alarmManager stops after restarting phone so I've created a BroadcastReceiver to trigger on BOOT_COMPLETE, still no success.
Even not getting toast.
BroadcastRreceiver class
package com.aman.dailynoti;
import...
public class BReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if ((intent.getAction()).equals("android.intent.action.BOOT_COMPLETED")) {
Toast.makeText(context, "broadcast", Toast.LENGTH_SHORT).show();
SharedPreferences mpreferences=context.getSharedPreferences("myPreferences",MODE_PRIVATE);
int h=mpreferences.getInt("hour",14);
int m=mpreferences.getInt("minute", 30);
Calendar calendar= Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY,h);
calendar.set(Calendar.MINUTE,m);
calendar.set(Calendar.SECOND,00);
Intent notiIntent = new Intent(context, Notification_Receiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 1, notiIntent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);
}
}
}
AndroidManifest.xml
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<application...>
<receiver
android:name="com.aman.dailynoti.BReceiver"
android:enabled="true"
android:label="breceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
</application>
Dont quote me on this but I believe android only gives a small window of time for your applications to do what they need to do on boot. If you want the user to receive notifications when not using the app look into push notifications.
you should use also intent filter android.intent.action.QUICKBOOT_POWERON to recieve after restart
I need your help. I'm stuck with this problem. Alarms work properly. However, when device is rebooted, and the specified time stored in db is in the past (3pm) and current time is 4pm, how can I check to prevent triggering the alarm immediately?
Docs say:
If the stated trigger time is in the past, the alarm will be triggered immediately.
Here's what I've tried so far:
class DeviceBootReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
// Check if successful reboot
if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")) {
SharedPreferences shared = context.getSharedPreferences(Constants.PREF_NAME, Context.MODE_PRIVATE);
// Check if daily notification is enabled
// If yes, call NotificationPublisher to communicate with NotificationAlarmService
if(shared.getBoolean(Constants.KEY_IS_DAILY_NOTIFIED, false)) {
DBHelper dbHelper = new DBHelper(context);
DBConnector.dbConnect(dbHelper);
int DAILY_NOTIFICATION_ID = Constants.DAILY_VERSE_NOTIFICATION_1_ID;
ArrayList<Notification> notificationList = dbHelper.getNotifications();
Log.e("", "notificationList: " + notificationList.size());
for(Notification obj : notificationList) {
Calendar datetime = Calendar.getInstance();
datetime.set(Calendar.HOUR_OF_DAY, obj.getHourOfDay());
datetime.set(Calendar.MINUTE, obj.getMinute());
datetime.set(Calendar.SECOND, 0);
Calendar now = Calendar.getInstance();
if (now.after(datetime)) {
datetime.add(Calendar.DATE, now.get(Calendar.DATE) + 1);
}
Log.e("BOOT RECEIVER", "" + obj.getHourOfDay() + ":" + obj.getMinute());
Intent myIntent = new Intent(context, NotificationPublisher.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
DAILY_NOTIFICATION_ID++,
myIntent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
datetime.getTimeInMillis(), AlarmManager.INTERVAL_DAY,
pendingIntent);
}
}
}
}
AndroidManifest:
<receiver
android:name=".utils.DeviceBootReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
</intent-filter>
</receiver>
What seems to be wrong with my code? I'd appreciate any help. Thanks!
I set & check alarm time like this and it works for me now:
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, alarmTimePicker.getCurrentHour());
calendar.set(Calendar.MINUTE, alarmTimePicker.getCurrentMinute());
Calendar now = Calendar.getInstance();
now.setTimeInMillis(System.currentTimeMillis());
if (calendar.before(now))
calendar.add(Calendar.DAY_OF_MONTH, 1);
A sample code to set repetition of Alarm at interval day.
I have set the Alarm in MainActivity if your want to set Alarm once you can do it by extending Application class and write code to set Alarm inside onCreate.
public class MainActivity extends AppCompatActivity {
private AlarmManager alarmMgr;
private PendingIntent alarmIntent;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
alarmMgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, AlarmReceiver.class);
alarmIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 15);
calendar.set(Calendar.MINUTE, 30);
alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
AlarmManager.INTERVAL_DAY, alarmIntent);
}
}
SampleBootReciver - set Alarm after the device is rebooted
public class SampleBootReceiver extends BroadcastReceiver {
private AlarmManager alarmMgr;
private PendingIntent alarmIntent;
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")) {
alarmMgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
Intent intent1 = new Intent(context, AlarmReceiver.class);
alarmIntent = PendingIntent.getBroadcast(context, 0, intent1, 0);
Calendar now = Calendar.getInstance();
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 15);
calendar.set(Calendar.MINUTE, 30);
if (calendar.before(now))
calendar.add(Calendar.DAY_OF_MONTH, 1);
alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
AlarmManager.INTERVAL_DAY, alarmIntent);
}
}
}
AlarmReceiver - perform action after Alarm is fired.
public class AlarmReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "I'm running", Toast.LENGTH_SHORT).show();
}
}
I'm just displaying a toast.
Lastly the manifest file -
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.bits.kevz.samplealarm">
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".AlarmReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
<receiver android:name=".SampleBootReceiver"
android:enabled="false">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
</application>
</manifest>
I want you to run above code and check onBootCompleted output.
In my project I'm using AlarmManager to start a Service once a day. It's working fine. But it stops working when the phone reboot are restarts.
I searched through web and they suggested to start a BroadcastReceiver to listen RECEIVE_BOOT_COMPLETED action and restart the Alarm.
I don't know how to do that.
Please suggest me an easy way to reset the alarm. I've posted my code here.
My Code to start Alarm
Intent start_alarm=new Intent(MainPage.this,MailService.class);
PendingIntent pi=PendingIntent.getService(MainPage.this, 100, start_alarm, 0);
AlarmManager alarmManager = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.DATE,1);
calendar.set(Calendar.HOUR_OF_DAY, 12);
calendar.set(Calendar.MINUTE, 30);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.AM_PM, Calendar.AM);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),1000*60*60*24,pi);
My AlarmService
#Override
public void onStart(Intent intent,int startId){
super.onStart(intent,startId);
//* My Code for sending Mail *//
}
Manifest Registeration of Service
<service android:name=".MailService"/>
Simply create a broadcast receiver and register it on manifest with intent action_reboot, then start the alarm in onReceive method
this is how to register receiver
<receiver android:name="com.packagename.RebootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
this is the receiver
public class RebootReceiver extends BroadcastReceiver
{
public void onReceive(Context arg0, Intent arg1)
{
//start your alarm
}
}
I want to have an Notification on an specified Time each day.
For that I implemented an Broadcast receiver and an AlarmManager.
My doubt is that the receiver is reacting to every broadcast of the system.
Cause if I setup the alarmManager it is working fine for a while but than I got an notification nearly every hour (approximately).
And an other strange behaviour, if i go in airplane mode, the notifications doesn't show up.
public class MyReceiver extends BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent)
{
Intent service1 = new Intent(context, MyAlarmService.class);
context.startService(service1);
}
}
in the main activity
long REPEATE_TIME_MS=86400000 /*24h*/;
/* notification handling */
String syncConnPref = this.sharedPref.getString("notificationTime", "12:00");
String[] pieces=syncConnPref.split(":");
/* setup the start time for the alarm */
Calendar calendar = Calendar.getInstance();
long nowInMillisecs = calendar.getTimeInMillis();
calendar.set(Calendar.HOUR_OF_DAY, Integer.parseInt(pieces[0], 10));
calendar.set(Calendar.MINUTE, Integer.parseInt(pieces[1], 10));
long alarmStartTimeUnMillisecs = calendar.getTimeInMillis();
if(alarmStartTimeUnMillisecs<=nowInMillisecs)
{
calendar.add(Calendar.DAY_OF_YEAR, 1);
alarmStartTimeUnMillisecs = calendar.getTimeInMillis();
}
Intent myIntent = new Intent(this.notificationContext, MyReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this.notificationContext, 0, myIntent,PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager)this.notificationContext.getSystemService(Service.ALARM_SERVICE);
alarmManager.cancel(pendingIntent);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), REPEATE_TIME_MS, pendingIntent);
Log.d(TAG, "Alarm setup with :"+ calendar.get(Calendar.HOUR_OF_DAY)+":"+ calendar.get(Calendar.MINUTE));
manifest.xml
<receiver android:name="com.example.whoseturn.MyReceiver" android:enabled="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
I have a counter that needs to be reset at midnight every day as well as some notification that needs to be displayed whether the app is closed or not.
For that I have an alarmManager that is set up:
public void scheduleAlarm()
{
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.DAY_OF_YEAR, 0);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 01);
Intent intentAlarm = new Intent(this, AlarmReceiver.class);
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY,
PendingIntent.getBroadcast(getApplicationContext(), 1, intentAlarm,
PendingIntent.FLAG_UPDATE_CURRENT));
}
It is registered in the android manifest as follow:
<receiver android:name="com.whitepebblesplus.AlarmReceiver">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
</intent-filter>
</receiver>
and I have in the alarmReceiver class the following
public class AlarmReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent)
My problem is that whenever the app is closed the alarm won't go off and so the counter won't be reseted, not until the app starts again, which is really not what I want.
Anyone of you has an idea on how to make the alarm goes off whether the app is running or not?
thanks