Develop Reference

Android notifications not displaying

I have written a code that is supposed to display notifications. I am choosing hour and minute from TimePicker component (notifications popping up every day at given time), then create an intent for Notification receiver. The database is updated with proper info and everything is being set with the AlarmManager. The request code ("code" variable) is unique for each notification. I am pasting code snippets below:
SettingActivity class:
findViewById(R.id.buttonNotification).setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view){
int hour, minute, id;
Calendar calendar = Calendar.getInstance();
PendingIntent pendingIntent;
calendar.set(Calendar.HOUR_OF_DAY,timePicker.getCurrentHour());
calendar.set(Calendar.MINUTE, timePicker.getCurrentMinute());
Intent intent = new Intent(getApplicationContext(),Notifcation_receiver.class);
hour = timePicker.getCurrentHour();
minute = timePicker.getCurrentMinute();
if(extra!=null){
pendingIntent = PendingIntent.getBroadcast(getApplicationContext(),extra.getInt("Code"),intent,PendingIntent.FLAG_UPDATE_CURRENT);
intent.putExtra("Code",extra.getInt("Code"));
db.updateNotification(hour,minute,extra.getInt("ID"));
}
else{
int code= Notification.getID();
intent.putExtra("Code",code);
pendingIntent = PendingIntent.getBroadcast(getApplicationContext(),code,intent,PendingIntent.FLAG_UPDATE_CURRENT);
db.insertNotification(hour,minute);
}
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis(),AlarmManager.INTERVAL_DAY,pendingIntent);
startActivity(new Intent(SettingActivity.this, NotificationActivity.class));
}
});
}
Notification receiver class:
public class Notifcation_receiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
int code = intent.getIntExtra("Code",0);
NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Intent repeating_intent = new Intent(context,MainActivity.class);
repeating_intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(context,code,repeating_intent,PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
.setContentIntent(pendingIntent)
.setSmallIcon(android.R.drawable.arrow_up_float)
.setContentTitle("title")
.setContentText("text")
.setAutoCancel(false);
notificationManager.notify(code,builder.build());
}
}
I can't seem to find the problem, causing the lack of planned notifications. Thank You for any help.

The problem was, as Mehmed mentioned, no channel set for the NotificationService.
Logcat log:
"E/NotificationService: No Channel found for pkg=com.example.kuba.quizapp, channelId=null"
It worked on API 22, but for 25 and higher the notification must be build with extra channel info.

Scheduled Android Notification push on startup

I am developing the schedule notification for Android. It is successfully get notification at scheduled time but also get notification at the time when the application startup which I do not want. Here are my codes.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
prefs= PreferenceManager.getDefaultSharedPreferences(this);
show = (TextView)findViewById(R.id.textView);
View btn_failure = findViewById(R.id.btn_failure_id);
btn_failure.setOnClickListener(this);
View btn_unhappy = findViewById(R.id.btn_unhappy_id);
btn_unhappy.setOnClickListener(this);
View btn_chicken_soup = findViewById(R.id.btn_soup_id);
btn_chicken_soup.setOnClickListener(this);
View btn_no_motivation = findViewById(R.id.btn_no_id);
btn_no_motivation.setOnClickListener(this);
// createScheduledNotification(9,0);
}
#Override
protected void onResume() {
super.onResume();
time = prefs.getString("noti", "9:00");
String[] pieces=time.split(":");
hour = Integer.parseInt(pieces[0]);
minute = Integer.parseInt(pieces[1]);
boolean onOff = prefs.getBoolean("noti_10",true);
createScheduleNotification(hour,minute,onOff);
}
public void createScheduleNotification(int hour, int minute, boolean onOff){
if(onOff){
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, hour);
calendar.set(Calendar.MINUTE, minute);
calendar.set(Calendar.SECOND, 0);
AlarmManager am = (AlarmManager) MainActivity.this.getSystemService(MainActivity.this.ALARM_SERVICE);
am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, getPendingIntent(this));
}else{
AlarmManager mgr=(AlarmManager)this.getSystemService(this.ALARM_SERVICE);
mgr.cancel(getPendingIntent(this));
}
}
private PendingIntent getPendingIntent(Context ctxt) {
Intent intent1 = new Intent(ctxt, TimeAlarm.class);
intent1.putStringArrayListExtra("quotes",quote_chicken_soup);
PendingIntent pendingIntent = PendingIntent.getBroadcast(ctxt, 0,intent1, PendingIntent.FLAG_UPDATE_CURRENT);
return pendingIntent;
}
public class TimeAlarm extends BroadcastReceiver {
private String daily_quote = "testing";
#Override
public void onReceive(Context context, Intent paramIntent) {
NotificationManager manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Intent intent = new Intent(context,DisplayActivity.class);
intent.putStringArrayListExtra("quote",paramIntent.getStringArrayListExtra("quotes"));
daily_quote = paramIntent.getStringArrayListExtra("quotes").get(0);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 1, intent, 0);
Notification.Builder builder = new Notification.Builder(context);
builder.setAutoCancel(true);
builder.setTicker("Daily Quote");
builder.setContentTitle("Daily Quote");
builder.setContentText(daily_quote);
builder.setSmallIcon(R.mipmap.ic_launcher);
builder.setContentIntent(pendingIntent);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
builder.setSubText("Be Happy! Have a nice day!"); //API level 16
}
Notification myNotication = builder.getNotification();
manager.notify(11, myNotication);
}
}
Where is the problem that cause the notification being push when app startup?

There seems nothing wrong in your code.
Issue with notification being pushed up at startup is surely because of AlarmManager code.
From your code snippet, I hard coded the setting of time as below, and it runs as expected . First time it triggers in one minute after the system clock and then every 2 minutes there after.
// first time set to-- trigger after one minute from now
long firstTimeTriggerAt = SystemClock.elapsedRealtime() + 1000 * 60 * 1;
AlarmManager am = (AlarmManager) MainActivity.this.getSystemService(MainActivity.this.ALARM_SERVICE);
//Repeat the alaram every two minutes
long interval = 1000 * 60 * 2;
am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,firstTimeTriggerAt, interval, getPendingIntent(this));
So you need to check the constant values for time, which you are setting in Shared preference.
Just FYI , the code runs well with RTC_WAKEUP constant also.
Hope this helps.

in onResume() change
boolean onOff = prefs.getBoolean("noti_10",true);
to
boolean onOff = prefs.getBoolean("noti_10",false);

Notifications don't get fired - Android

I'm trying to make an an app that sends multiple scheduled alarms, shown through a notification according to a specific time (not time interval, but time) every day.
I already implemented the AlarmReceiver.class that fires the notifications at each intent, but the problem is that I don't get any notification. I tried to show a Log inside the onReceiver() method, but the message hasn't been shown, so the alarm hasn't been reached.
This is the setAlarm() function, that sets the hour and the time to the Calendar I instantiated:
public void setAlarm()
{
SharedPreferences pref = this.getSharedPreferences("NOTIFICATION_CODE", Context.MODE_PRIVATE);
String mName = NameFld.getText().toString();
String mFormat = FormatSpn.getSelectedItem().toString();
Date date = new Date();
Calendar calendar = Calendar.getInstance();
Calendar current = Calendar.getInstance();
current.setTime(date);
calendar.setTime(date);
calendar.set(Calendar.HOUR_OF_DAY, picker_hour);
calendar.set(Calendar.MINUTE, picker_minute);
calendar.set(Calendar.SECOND, 0);
if(current.before(calendar))
{
calendar.add(Calendar.DATE, 1);
}
medName = mName;
medFormat = mFormat;
int _reqCode = pref.getInt("reqCode", -1);
Intent intent = new Intent(this, AlarmReceiver.class);
PendingIntent pIntent = PendingIntent.getBroadcast(this, _reqCode, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager aManager = (AlarmManager) getSystemService(ALARM_SERVICE);
aManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pIntent);
editor = pref.edit();
editor.putInt("reqCode", ++_reqCode);
editor.commit();
}
To set the time, I implemented a TimePickerDialog and I stored hour and minute values to picker_hour and picker_minute.
Since I have to send multiple alarms, I use SharedPreferences to store the reqCode used then to identify the PendingIntent every time one is sent.
This is the AlarmReceiver.class that fire a notification for each intent received. Every notification is identified through the same reqCode of the PendingIntent:
public class AlarmReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
String[] data = AddMedicine.getData();
SharedPreferences pref = context.getSharedPreferences("NOTIFICATION_CODE", context.MODE_PRIVATE);
int reqCode = pref.getInt("reqCode", -1);
NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
builder.setAutoCancel(true);
builder.setTicker("It's pill time!");
builder.setContentTitle(data[0]);
builder.setContentText(data[1]);
builder.setSmallIcon(R.drawable.ic_launcher);
Notification notification = builder.build();
NotificationManager nManager = (NotificationManager) context.getSystemService(context.NOTIFICATION_SERVICE);
nManager.notify(reqCode, notification);
Log.i("NOTIFICATION", "FIRED!");
}}
P.s. The alarm is set every time the user creates it, in order to schedule them through the reqCode.
So, anyone knows how to send multiple alarms according by time? Thank you in advance!

Notification fired only one time

I'm trying to make an app that fires notifications every time the user has to take a medicine.
ISSUE: I want to send a notification at a specific time. I searched on the Internet but I only found tutorials that explain how to send notifications after a specified interval of time. I have more times stored in an SQLite database and I want to fire a notification for every of them, like an alarm clock.
This is my setAlarm() function (If something is not clear, please ask):
public void setAlarm()
{
String mName = NameFld.getText().toString();
String mFormat = FormatSpn.getSelectedItem().toString();
Date date = new Date();
Calendar calendar = Calendar.getInstance();
Calendar current = Calendar.getInstance();
current.setTime(date);
calendar.setTime(date);
char[] sTime = TimeBtn.getText().toString().toCharArray();
if(sTime[0] == '0')
{
calendar.set(Calendar.HOUR_OF_DAY, sTime[1]);
}
else
{
String tmp = "";
tmp += sTime[0];
tmp += sTime[1];
int hour = Integer.parseInt(tmp);
calendar.set(Calendar.HOUR_OF_DAY, hour);
}
if(sTime[3] == '0')
{
calendar.set(Calendar.MINUTE, sTime[4]);
}
else
{
String tmp = "";
tmp += sTime[3];
tmp += sTime[4];
int minute = Integer.parseInt(tmp);
calendar.set(Calendar.MINUTE, minute);
}
calendar.set(Calendar.SECOND, 0);
if(current.before(calendar))
{
calendar.add(Calendar.DATE, 1);
}
Intent intent = new Intent(this, AlarmReceiver.class);
medName = mName;
medFormat = mFormat;
PendingIntent pIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager aManager = (AlarmManager) getSystemService(ALARM_SERVICE);
aManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pIntent);
}
This function splits the date in hour and minute values and sets them to the Calendar. Once running I get notifications with no title and text (I manage them in a static function that sends medicine data to the BroadcastReceiver class) and when I add a new alarm, it doesn't fire. Like I said before, I'd like to get notifications for each time value.
This is the BroadcastReceiver class:
public class AlarmReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
String[] data = AddMedicine.getData();
NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
builder.setAutoCancel(true);
builder.setTicker("It's pill time!");
builder.setContentTitle(data[0]);
builder.setContentText(data[1]);
builder.setSmallIcon(R.drawable.ic_launcher);
Notification notification = builder.build();
NotificationManager nManager = (NotificationManager) context.getSystemService(context.NOTIFICATION_SERVICE);
nManager.notify(AddMedicine.NOTIFICATION_ID, notification);
AddMedicine.NOTIFICATION_ID++;
}
}
If anyone could solve my problem, I will really appreciate it. Thanks in advance!
EDIT: This is the getData() method, that provides name and format of the medicine in order to put them in the building of the notification:
public static String[] getData()
{
String[] data = {medName, medFormat};
return data;
}
medName and medFormat are global variables initialized inside the setAlarm() method.

You are using same REQUEST_CODE for your PendingIntent, which replacing other PendingIntent's.
Use different request codes (2nd parameter) for your PendingIntent.getBroadcast() method for every call.
You can use SharedPref to store one counter which will increment for each PendingIntent.
Example :-
int reminderRequestCode = sPrefs.getInt(KeyConstants.PREF_REMINDER_REQUEST_CODE, -1);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(),
*reminderRequestCode*, myIntent,0);
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);
SharedPreferences.Editor editor = sPrefs.edit();
editor.putInt(KeyConstants.PREF_REMINDER_REQUEST_CODE, ++reminderRequestCode);
editor.commit();

when I add a new alarm, it doesn't fire
You have to use a unique identifier (requestCode field of getBroadcastmethod) for each PendingIntent because you're using the same one ( 0 ) for all of the instances with the PendingIntent.FLAG_UPDATE_CURRENT so only the last created one will be fired.
I get notifications with no title and text
I think you have to use Intentextras to send datas to the AlarmReceiver because in your case data are changin before AlarmReceiver gets fired so you get wrong values.

set notification alert

hi ia m new to android..
i have developed a programme to set notification onspecific time
but the problem is it shows notification only of date before october 2011
if i enter any date of november its not showing any notification..
seems strange but really stuck here....
main activity..
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Calendar cal = Calendar.getInstance(); // for using this you need to
cal.set(Calendar.MONTH, 11);
cal.set(Calendar.YEAR, 2011);
cal.set(Calendar.DAY_OF_MONTH, 25);
cal.set(Calendar.HOUR_OF_DAY, 18);
cal.set(Calendar.MINUTE, 28);
Intent alarmintent = new Intent(getApplicationContext(),
AlarmReceiver.class);
alarmintent.putExtra("title", "Title of our Notification");
alarmintent.putExtra("note", "Description of our Notification");
int HELLO_ID = 1;
PendingIntent sender = PendingIntent.getBroadcast(
getApplicationContext(), HELLO_ID, alarmintent,
PendingIntent.FLAG_UPDATE_CURRENT |
Intent.FILL_IN_DATA);
AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), sender);
}
and the alarm reciever activity...
public class AlarmReceiver extends BroadcastReceiver {
private static final String NotificationManager = null;
private static int NOTIFICATION_ID = 0;
#Override
public void onReceive(Context context, Intent intent) {
(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
NotificationManager manger = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(R.drawable.ic_launcher,
"Combi Note", System.currentTimeMillis());
PendingIntent contentIntent = PendingIntent.getActivity(context,
NOTIFICATION_ID, new Intent(context,
AlarmReceiver.class), 0);
Bundle extras = intent.getExtras();
String title = extras.getString("title");
String note = extras.getString("note");
notification.setLatestEventInfo(context, note, title, contentIntent);
notification.flags = Notification.FLAG_INSISTENT;
notification.defaults |= Notification.DEFAULT_SOUND;
manger.notify(NOTIFICATION_ID, notification);
}
};

Calendar.set(Calendar.MONTH, month)
Expects a 0-based value. 11 is december.

You are setting an alarm for 5/5/2011, this date has passed so it is executed immediately.
When you receive a instance of Calendar, I think that the system automatically fills in the current date & time. So change only what you need to change (I.E if you want to send a notification in 5 days, change the day only in the calendar instance)
By the way, when clicking the notification it will, again, call your BroadcastReceiver and this time the intent won't have the extras you have put in it while in the activity. When clicking the notification, you should launch an activity - not a broadcast receiver.