Develop Reference

Android studio notifications implemented but not showing

I have implemented android notifications in android studio. I was creating notification for a media player. following is the function for showing notifications
public void showNotification(int playPauseBtn)
{
Intent intent = new Intent(this, PlayerActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, 0);
Intent prevIntent = new Intent(this, NotificationReceiver.class).setAction(ACTION_PREVIOUS);
PendingIntent prevPending = PendingIntent.getBroadcast(this, 0, prevIntent, PendingIntent.FLAG_UPDATE_CURRENT);
Intent pauseIntent = new Intent(this, NotificationReceiver.class).setAction(ACTION_PLAY);
PendingIntent pausePending = PendingIntent.getBroadcast(this, 0, pauseIntent, PendingIntent.FLAG_UPDATE_CURRENT);
Intent nextIntent = new Intent(this, NotificationReceiver.class).setAction(ACTION_NEXT);
PendingIntent nextPending = PendingIntent.getBroadcast(this, 0, nextIntent, PendingIntent.FLAG_UPDATE_CURRENT);
byte[] picture = null;
try
{
picture = getAlbumArt(listSongs.get(position).getPath());
} catch (Exception ignored)
{
}
Bitmap thumb;
if (picture != null)
{
thumb = BitmapFactory.decodeByteArray(picture, 0, picture.length);
} else
{
thumb = BitmapFactory.decodeResource(getResources(), R.drawable.icon_music);
}
Notification notification = new NotificationCompat.Builder(this, CHANNEL_ID_1).setSmallIcon(playPauseBtn)
.setLargeIcon(thumb)
.setContentTitle(listSongs.get(position).getTitle())
.setContentText(listSongs.get(position).getArtist())
.addAction(R.drawable.ic_baseline_skip_previous_24, "Previous", prevPending)
.addAction(R.drawable.ic_baseline_skip_next_24, "Next", nextPending)
.addAction(playPauseBtn, "pause", pausePending)
.setStyle(new androidx.media.app.NotificationCompat.MediaStyle().setMediaSession(mediaSessionCompat.getSessionToken()))
.setPriority(NotificationCompat.PRIORITY_HIGH)
.setOnlyAlertOnce(true)
.setContentIntent(contentIntent)
.build();
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
notificationManager.notify(0, notification);
Toast.makeText(PlayerActivity.this, "Nitification created", Toast.LENGTH_SHORT).show();
}
In the function parameter (playPauseBtn) I am sending the play icon or the pause icon depending upon weather the song is playing or is paused.
Function call is made like following:
showNotification(R.drawable.ic_baseline_pause_24);
OR
showNotification(R.drawable.ic_baseline_play_arrow_24);
But when ever I call this function the notification doesn't show up. I am also using the notification channel but still it is not working. I have also tried to debug the code but the code runs fine, still the notification doesn't show up. please advise

try this.
put this code in your Activity/fragment;
public void getNotification(){
int notifId =new Random().nextInt(500); //get random id
NotificationManager notificationManager;
Notification notification;
notificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
channelID = "1";
channelName = "news";
channelDesc = "news description";
NotificationChannel notificationChannel = new NotificationChannel(channelID, channelName, NotificationManager.IMPORTANCE_HIGH);
notificationChannel.setDescription(channelDesc);
notificationChannel.enableLights(true);
notificationChannel.setSound(null, null);
notificationChannel.setLightColor(Color.GREEN);
notificationManager.createNotificationChannel(notificationChannel);
}
RingtoneManager.getRingtone(mContext,
RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)).play();
NotificationCompat.Builder builder = new NotificationCompat.Builder(mContext, channelID)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("title Of MUSIC")
.setContentText("Content")
.setVibrate(new long[]{100, 500, 500, 500, 500})
.setAutoCancel(true)
.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
.setLargeIcon(BitmapFactory.decodeResource(mContext.getResources(), R.mipmap.ic_launcher))
.setVisibility(NotificationCompat.VISIBILITY_PUBLIC);
Intent actionReadMessage = new Intent(mContext, NotifAction.class);
actionReadMessage.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
actionReadMessage.setAction("Play");
actionReadMessage.putExtra("NotifId",notifId);
PendingIntent playPendingIntent = PendingIntent.getBroadcast(mContext, notifId, actionReadMessage,PendingIntent.FLAG_CANCEL_CURRENT);
Intent mainAction = new Intent(mContext, NotifAction.class);
mainAction.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
mainAction.setAction("Pause");
mainAction.putExtra("NotifId",notifId);
PendingIntent PausePendingIntent = PendingIntent.getBroadcast(mContext, notifId, mainAction,PendingIntent.FLAG_CANCEL_CURRENT);
builder.setContentIntent(PausePendingIntent);
builder.addAction(R.mipmap.ic_launcher, "Play", playPendingIntent);
builder.addAction(R.mipmap.ic_launcher, "Pause", PausePendingIntent);
notification = builder.build();
notificationManager.notify(notifId, notification);
}
and create class NotifAction.class for handle all action:
public class NotifAction extends BroadcastReceiver {
private static final String TAG = "maybe";
private MediaPlayer mp;
#Override
public void onReceive(final Context context, Intent intent) {
String action = intent.getAction();
Bundle extra = intent.getExtras();
if (extra != null) {
int notifId = extra.getInt("NotifId");
if (action.equals("Play")) {
mp = MediaPlayer.create(context, R.raw.music);
handleMusicState(mp);
} else if (action.equals("Pause")) {
handleMusicState(mp);
setMessageRead(notifId, context);
} else {
Toast.makeText(context, "extra action !", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(context, "Empty extra !", Toast.LENGTH_SHORT).show();
}
}
private void setMessageRead(int id, Context context) {
// other method
clearNotification(id, context);
}
private void clearNotification(int id, Context context) {
NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.cancel(id);
}
private void handleMusicState(MediaPlayer mediaPlayer) {
if (mediaPlayer.isPlaying()) mediaPlayer.pause();
else mediaPlayer.start();
}
}
define this receiver to manifest:
note:in tag
<receiver android:name=".NotifAction">
<intent-filter>
<action android:name="Play" />
<action android:name="Pause" />
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
</intent-filter>
</receiver>

FIX
Donot use .setMediaSession(mediaSessionCompat.getSessionToken()) in .setStyle() in the code given in the question
simply just use
.setStyle(new androidx.media.app.NotificationCompat.MediaStyle())

Unique Notifications at Unique Times with broadcastReceiver

i am currently devoloping small app and i struggle about sending notifications.
My Goal: I have different tasks and they need to send unique notifications at unique time to user even
while app is closed.
What I did?: I did create different broadCastReceiver's to make them work in harmony with
alarmManager' s but even i changed the request code , flag or channel code, i do get notifications at
same time if user enables notifications for more than one task, but alarmManagers for notifications
are not supposed to work after same time.
'receiver' part of AndroidManifest.xml
<receiver
android:name=".BroadcastReceiver"
android:exported="true">
<intent-filter>
<action
android:name="pendingIntent">
</action>
</intent-filter>
</receiver>
<receiver
android:name=".BroadcastReceiver2"
android:exported="true">
<intent-filter>
<action
android:name="pendingIntent2">
</action>
</intent-filter>
</receiver>
first and second broadCastReceiver
public class BroadcastReceiver extends android.content.BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent)
{
{
NotificationCompat.Builder builder = new NotificationCompat.Builder(context, "100")
.setSmallIcon(R.drawable.logologo)
.setContentTitle("Title")
.setContentText("Text")
.setPriority(NotificationCompat.PRIORITY_HIGH);
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
notificationManager.notify(100, builder.build());
}
}
}
public class BroadcastReceiver2 extends BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent)
{
NotificationCompat.Builder builder = new NotificationCompat.Builder(context,"102")
.setSmallIcon(R.drawable.logologo)
.setContentTitle("Title")
.setContentText("Text")
.setPriority(NotificationCompat.PRIORITY_HIGH);
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
notificationManager.notify(102, builder.build());
}
}
First and second Channel
public void createChannel1()
{
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
{
CharSequence name = "channel1";
String description = "channel1 description";
int importance = NotificationManager.IMPORTANCE_HIGH;
NotificationChannel channel1 = new NotificationChannel("100", name, importance);
channel1.setDescription(description);
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel1);
}
}
public void createChannel2()
{
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
{
CharSequence name = "channel2";
String description = "channel2 description";
int importance = NotificationManager.IMPORTANCE_HIGH;
NotificationChannel channel2 = new NotificationChannel("102", name,importance);
channel2.setDescription(description);
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel2);
}
}
Activity that needed to send Notification from first broadCastReceiver on Channel1 and
Activity that needed to send Notification from second broadCastReceiver on Channel2
button30.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
Intent intent = new Intent(SmokeActivity.this, BroadcastReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(SmokeActivity.this, 100, intent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
// Set the alarm to start at 8:30 a.m.
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 8);
calendar.set(Calendar.MINUTE, 30);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
1000 * 60, pendingIntent);
}
});
button29.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
Toast.makeText(WaterActivity.this, "Notifications Set", Toast.LENGTH_SHORT).show();
Intent intent2 = new Intent(WaterActivity.this, BroadcastReceiver2.class);
PendingIntent pendingIntent2 = PendingIntent.getBroadcast(WaterActivity.this,0,intent2,0);
AlarmManager alarmManager2 = (AlarmManager)getSystemService(ALARM_SERVICE);
// Set the alarm to start at 8:30 a.m.
Calendar calendar2 = Calendar.getInstance();
calendar2.setTimeInMillis(System.currentTimeMillis());
calendar2.set(Calendar.HOUR_OF_DAY, 8);
calendar2.set(Calendar.MINUTE, 30);
alarmManager2.setRepeating(AlarmManager.RTC_WAKEUP, calendar2.getTimeInMillis(),
1000*45, pendingIntent2);
}
});

For anyone suffering from same problem, the thing is android system does not allow us to send notification after first 10 minute when you create notification.

My receiver is not showing notification - why? [duplicate]

This question already has answers here:
Android notification is not showing
(14 answers)
Closed 4 years ago.
//I had given intent in oncreate
Intent alarmIntent = new Intent(getContext(), ServiceReceiver.class);
pendingIntent = PendingIntent.getBroadcast(getContext(),
0, alarmIntent, 0);
// here i am setting alarm
public void setALARM(String time, String strDate){
AlarmManager manager = (AlarmManager) getContext()
.getSystemService(Context.ALARM_SERVICE);
String strHour=formateDateFromstring("HH:mm","HH",time);
String strMin=formateDateFromstring("HH:mm","mm",time);
String strdate=formateDateFromstring("yyyy-MM-dd","dd",strDate);
String strMonth=formateDateFromstring("yyyy-MM-dd","MM",strDate);
String strYear=formateDateFromstring("yyyy-MM-dd","yyyy",strDate);
int hour=Integer.parseInt(strHour);
int min=Integer.parseInt(strMin);
int date=Integer.parseInt(strdate);
int month=Integer.parseInt(strMonth)-1;
int year=Integer.parseInt(strYear);
Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_MONTH,date); //1-31
cal.set(Calendar.MONTH,month); //first month is 0!!! January is zero!!!
cal.set(Calendar.YEAR,year);//year...
cal.set(Calendar.HOUR_OF_DAY,hour); //HOUR
cal.set(Calendar.MINUTE,min);//MIN
cal.set(Calendar.SECOND,0);
manager.setExact(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),
pendingIntent);
}
//Here is my receiver class
public class ServiceReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
.setSmallIcon(R.drawable.logob_icon_prestigesalon)
.setContentTitle("ABC")
.setContentText("time to go")
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
Toast.makeText(context,"service",Toast.LENGTH_LONG).show();
NotificationManager notificationmanager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
notificationmanager.notify(0, builder.build());
}
}
//I mentioned receiver class in manifest
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<receiver android:name=".ServiceReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
<!-- Will not be called unless the application explicitly enables it -->
<receiver android:name=".DeviceBootReceiver"
android:enabled="false">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
I want to set an alarm for the exact time.I checked the code in debug mode whether the debug is coming inside the onReceive if the given time comes.The debug is coming whe the given time is reached.The issue is notification is not visible.

Not sure if it is your specific problem, but NotificationCompat.Builder(Context context) is deprecated in API level 26.1.0. You should use NotificationCompat.Builder(Context, String) instead. All posted Notifications must specify a NotificationChannel Id for 26+ devices as you can check in Notification and Notification.Builder documentation

Try something like this,Have not tested.
String channelID = "Notification_Channel_ID";
String channelDesr = "Notification_channel_description";
buildNotificationChannel(channelID,channelDesr);
public void buildNotificationChannel(String channelID, String description) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationManager manager = (NotificationManager)
context.getSystemService(Context.NOTIFICATION_SERVICE);
if (manager.getNotificationChannel(channelID) == null) {
NotificationChannel channel = new NotificationChannel(channelID, description,
NotificationManager.IMPORTANCE_LOW);
channel.setDescription(description);
manager.createNotificationChannel(channel);
}
}
}
NotificationCompat.Builder builder = new
NotificationCompat.Builder(context,channelID)
.setSmallIcon(R.drawable.logob_icon_prestigesalon)
.setContentTitle("ABC")
.setContentText("time to go")
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
Toast.makeText(context,"service",Toast.LENGTH_LONG).show();
NotificationManager notificationmanager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
notificationmanager.notify(0, builder.build());

Android notification not able to access the received string

I receive a notification in broadcast receiver like this in MainActivity.java. I need to access this string textMessage for my other classes -
if (intent.getAction().equals("NOTIFY_TEXT_MESSAGE")){
String textMessage = intent.getStringExtra("TextMessage");
Intent noti_intent = new Intent(MainActivity.this, NotificationReceiver.class);
noti_intent.setAction("NotificationReceived");
noti_intent.putExtra("NotificationMessage",textMessage);
PendingIntent pi = PendingIntent.getBroadcast(MainActivity.this, 0, noti_intent, PendingIntent.FLAG_UPDATE_CURRENT);
Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder builder =
new NotificationCompat.Builder(MainActivity.this)
.setSmallIcon(R.drawable.text_messages)
.setContentTitle(getResources().getString(R.string.Message_Title))
.setContentText(textMessage)
.setDefaults(Notification.DEFAULT_ALL) // must requires VIBRATE permission
.setPriority(NotificationCompat.PRIORITY_HIGH) //must give priority to High, Max which will considered as heads-up notification
.addAction(0,
getString(R.string.Open), pi)
.setAutoCancel(true);
builder.setSound(soundUri);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, builder.build());
}
In NotificationReceiver.class,
public class NotificationReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if("NotificationReceived".equals(action)) {
String msg = MainActivity.NotificationMessage;
Log.v("shuffTest","msg" + msg);
}
}
}
In my Manifest,
<receiver android:name="com.example.NotificationReceiver">
<intent-filter>
<action android:name="NotificationReceived" />
</intent-filter>
</receiver>
Why the log msg is not appearing. What is the mistake in my code?

Try to get the message from the intent, like this:
public class NotificationReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if("NotificationReceived".equals(action)) {
String msg = intent.getStringExtra("NotificationMessage");
Log.v("shuffTest","msg" + msg);
}
}
}

How to start activity when user clicks a notification?

I am attempting to convert some code I found in a tutorial for my own use. Originally, the code launched the system contacts list when the user would click a notification generated by my app. I am trying to start an Activity of my own instead of launching the contact list, but it's not working. More specifically, nothing happens. There is no error, and my Activity doesn't load either. The notification window disappears after clicking, and the original Activity is still visible.
Here is my code:
public class MyBroadcastReceiver extends BroadcastReceiver {
private NotificationManager mNotificationManager;
private int SIMPLE_NOTFICATION_ID;
public void onReceive(Context context, Intent intent){
Bundle extras = intent.getExtras();
String deal = (String) extras.get("Deal");
String title = "Deal found at " + (String) extras.get("LocationName");
mNotificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notifyDetails = new Notification(R.drawable.icon, title,System.currentTimeMillis());
Class ourClass;
try {
ourClass = Class.forName("com.kjdv.gpsVegas.ViewTarget");
Intent startMyActivity = new Intent(context, ourClass);
PendingIntent myIntent = PendingIntent.getActivity(context, 0,startMyActivity, 0);
notifyDetails.setLatestEventInfo(context, title, deal, myIntent);
notifyDetails.flags |= Notification.FLAG_AUTO_CANCEL;
notifyDetails.flags |= Notification.DEFAULT_SOUND;
mNotificationManager.notify(SIMPLE_NOTFICATION_ID, notifyDetails);
}
catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
}
This is my entry in the AndroidManifext.xml file...
<activity android:name=".ViewTarget" android:label="#string/app_name" >
<intent-filter>
<action android:name="com.kjdv.gpsVegas.ViewTarget" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
And this is my Activity that I want to launch...
public class ViewTarget extends ListActivity {
public ListAdapter getListAdapter() {
return super.getListAdapter();
}
public ListView getListView() {
return super.getListView();
}
public void setListAdapter(ListAdapter adapter) {
super.setListAdapter(adapter);
}
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.locations);
Log.v("db", "Inside ViewTarget");
}
}

Which Android version are you running on? You might wanna try using NotificationCompat instead. This class is include in the latest support package.
Intent notificationIntent = new Intent(context, ViewTarget.class);
PendingIntent contentIntent = PendingIntent.getActivity(context,
0, notificationIntent,
PendingIntent.FLAG_CANCEL_CURRENT);
NotificationManager nm = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
Resources res = context.getResources();
NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
builder.setContentIntent(contentIntent)
.setSmallIcon(R.drawable.app_icon)
.setLargeIcon(BitmapFactory.decodeResource(res, R.drawable.app_icon))
.setTicker(payload)
.setWhen(System.currentTimeMillis())
.setAutoCancel(true)
.setContentTitle("Message")
.setContentText(payload);
Notification n = builder.getNotification();
n.defaults |= Notification.DEFAULT_ALL;
nm.notify(0, n);
EDIT:
I know this is an old thread/question but this answer helped me for showing the activity when tapping the notification.
For those people that this isn't working is probably because you haven't "registered" the activity in your manifest. For example:
<activity
android:name="com.package.name.NameOfActivityToLaunch"
android:label="Title of Activity" >
<intent-filter>
<action android:name="com.package.name.NAMEOFACTIVITYTOLAUNCH" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
And, hopefully, this should work.
Hope it helped...

you should set action and category for Intent.
Intent startMyActivity = new Intent(context, ourClass);
startMyActivity .setAction(Intent.ACTION_MAIN);
startMyActivity .addCategory(Intent.CATEGORY_LAUNCHER);
it works

I figured out the problem. I forgot to include the package name in the activity declaration in the Manifest file.
Wrong:
activity android:name=".ViewTarget" android:label="#string/app_name"
Correct:
activity android:name="com.kjdv.gpsVegas.ViewTarget" android:label="#string/app_name"

Can you try removing the Intent filter, so it looks like this:
<activity android:name=".ViewTarget" android:label="#string/app_name" />
Also, not sure if this code will work:
ourClass = Class.forName("com.kjdv.gpsVegas.ViewTarget");
Intent startMyActivity = new Intent(context, ourClass);
Can you try it like this instead:
Intent startMyActivity = new Intent(context, ViewTarget.class);

In order to launch an Activity from an Intent, you need to add a flag:
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
This is true even if you declare the class in the Intent's constructor.

check this code
public class TestActivity extends Activity {
private static final int UNIQUE_ID = 882;
public static NotificationManager nm;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Intent navigationIntent = new Intent();
navigationIntent.setClass(classname.this, MainActivity.class);
PendingIntent pi = PendingIntent.getActivity(this, 0, navigationIntent,
0);
String body = "New notificattion added!!!";
String title = "Notification";
Notification n = new Notification(R.drawable.icon, body,
System.currentTimeMillis());
//this is for giving number on the notification icon
n.number = Integer.parseInt(responseText);
n.setLatestEventInfo(this, title, body, pi);
n.defaults = Notification.DEFAULT_ALL;
nm.notify(UNIQUE_ID, n);