I have read lot about WakefulBroadcastReceiver... but didn't get anywhere about how to even call this from main activity. whenever I search how to call WakefulBroadcastReceiver the result always shows me how to call IntentService from WakefulBroadcastReceiver...
Well to call IntentService we write the code "startService()" in activity or in WakefulBroadcastReceiver...
to call BroadcastReceiver we write
AlarmManager am.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
PendingIntent.getBroadcast(this, 0, intent,PendingIntent.FLAG_UPDATE_CURRENT));
But I don't find anywhere how to call WakefulBroadcastReceiver...
please help..
android.support.v4.content.WakefulBroadcastReceiver is a helper class that receives a device wakeful event.
you shouldoverride onReceive() method where you can call a service or perform your task.
WakefulBroadcastReceiver uses wake lock, so you must provide WAKE_LOCK permission in AndroidManifest.xml. WakefulBroadcastReceiver is implemented as
public class AlarmReceiver extends WakefulBroadcastReceiver {
#Override
public void onReceive(final Context context, Intent intent) {
MainActivity.getTextView2().setText("Enough Rest. Do Work Now!");
Uri uri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
Ringtone ringtone = RingtoneManager.getRingtone(context, uri);
ringtone.play();
}
}
in menifest add
<uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>
call AlarmReceiver like this:
Intent myIntent = new Intent(MainActivity.this, AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, myIntent, 0);
also add receiver tag in manifest:
<receiver android:name=".AlarmReceiver"/>
For full working sample see this link:http://www.concretepage.com/android/android-alarm-clock-tutorial-to-schedule-and-cancel-alarmmanager-pendingintent-and-wakefulbroadcastreceiver-example
Related
I would like to know - how to show pop up window when AlarmManager will call? I've already created AlarmManager now I need to create something what will show popup window to cancel this Alarm.
My code:
public void setAlarm(long timeInMillis){
if(Build.VERSION.SDK_INT >= 23){
mCalendar.set(
mCalendar.get(Calendar.MONTH),
mCalendar.get(Calendar.YEAR),
mCalendar.get(Calendar.DAY_OF_YEAR),
mCalendar.get(Calendar.HOUR_OF_DAY),
mCalendar.get(Calendar.MINUTE)
);
}
final AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, MyAlarm.class);
intent.setData(currentUri);
final PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
alarmManager.setExact(AlarmManager.RTC, timeInMillis, pendingIntent);
}
and
public class MyAlarm extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
MediaPlayer mediaPlayer = MediaPlayer.create(context, Settings.System.DEFAULT_RINGTONE_URI);
mediaPlayer.start();
}
}
onReceive(context, intent) {
/*show the dialog in this method. set the onclick so it can dismiss the alarm,
get the value for the alarm from the bundle. I may be wrong about this
but i think alarmManager has a cancel(PendingIntent operation) method that u can
just send in the intent and your done.
Call a stopMedia(context) method after the cancel in order to stop the media
that is playing
*/
showDialog(context, intent)
//Extract the play media code to a method for readability
playMedia(context)
}
That should solve your problem
Before the code was posted:
We can either use the pending intent and have an activity that handles the pending intent. or use the handler to execute the code.
In either case, create a dialog fragment and then use the appropriate context to show it. setOnClickListener { alarmManager.cancel } for the dialog fragment button.
A little more explanation may be required depending on how the alarm manager is setup
I have a music application in which I am trying to add some action button on the notification bar.
I tried something like this:
public void onPrepared(MediaPlayer mediaPlayer) {
mediaPlayer.start();
Intent onPreparedIntent=new Intent("MEDIA_PLAYER_PREPARED").putExtra("CURR_SONG",songposn);
LocalBroadcastManager.getInstance(this).sendBroadcast(onPreparedIntent);
Intent notintent = new Intent(this, MainActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
Notification.Builder builder=new Notification.Builder(this);
PendingIntent pendingIntent=PendingIntent.getActivity(this,0,notintent,PendingIntent.FLAG_UPDATE_CURRENT);
PendingIntent prevPendingIntent=PendingIntent.getActivity
(this,1,new Intent().setAction("PREVIOUS"),PendingIntent.FLAG_UPDATE_CURRENT);
PendingIntent pausePendingIntent=PendingIntent.getActivity
(this,2,new Intent().setAction("PAUSE"),PendingIntent.FLAG_UPDATE_CURRENT);
PendingIntent nextPendingIntent=PendingIntent.getActivity
(this,3,new Intent().setAction("NEXT"),PendingIntent.FLAG_UPDATE_CURRENT);;
builder.setContentIntent(pendingIntent).setSmallIcon(R.drawable.playicon)
.addAction(R.drawable.back, "Previous", prevPendingIntent)
.addAction(R.drawable.playsmall, "Pause", pausePendingIntent)
.addAction(R.drawable.forw, "Next", nextPendingIntent)
.setTicker(songArtist)
.setOngoing(true).setContentTitle(songTitle).setContentText(songArtist);
Notification not=builder.build();
startForeground(MusicService.NOTIFY_ID,not);
}
I declared a NotificationReciever class inside this service
public class NotificationReciever extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
Log.e("here","here");
String action=intent.getAction();
if(action!=null){
switch (action){
case "PREVIOUS":{
playPrev();
break;
}
case "PAUSE":{
pausePlayer();
LocalBroadcastManager.getInstance(MusicService.this).sendBroadcast(new Intent("STOP_THREAD"));
break;
}
case "NEXT":{
playNext();
break;
}
}
}
}
}
Structure looks something like this:
-MusicService extends Service
--NotificationReciever extends BroadcastReceiver
My manifest file contains reciever like this:
<receiver android:name=".MusicService$NotificationReciever">
<intent-filter>
<action android:name="PREVIOUS"/>
<action android:name="PAUSE"/>
<action android:name="NEXT"/>
</intent-filter>
</receiver>
When I run my music play, notification does come up with buttons but they don't seem to fire the onReceive function?
What am I missing here?
Update:
Followed hasif sayed answer and I seem to found an error
java.lang.RuntimeException: Unable to instantiate receiver com.example.tilak.imusicplay.MusicService$NotificationReciev‌​er: java.lang.InstantiationException:java.lang.Class has no zero argument constructor
Googling about it, I found that I have to use a static class or I have to register/unregister in the parent class.
So this is what I did:
public void onCreate() {
super.onCreate();
//
LocalBroadcastManager.getInstance(this).registerReceiver(
new NotificationReciever(),new IntentFilter("PREVIOUS"));
LocalBroadcastManager.getInstance(this).registerReceiver(
new NotificationReciever(),new IntentFilter("PAUSE"));
LocalBroadcastManager.getInstance(this).registerReceiver(
new NotificationReciever(),new IntentFilter("NEXT"));
}
PendingIntent prevPendingIntent=PendingIntent.getBroadcast
(this,1,new Intent().setAction("PREVIOUS"),PendingIntent.FLAG_UPDATE_CURRENT);
PendingIntent pausePendingIntent=PendingIntent.getBroadcast
(this,2,new Intent().setAction("PAUSE"),PendingIntent.FLAG_UPDATE_CURRENT);
PendingIntent nextPendingIntent=PendingIntent.getBroadcast
(this,3,new Intent().setAction("NEXT"),PendingIntent.FLAG_UPDATE_CURRENT);
Now I don't get this above error but onReceive is not working again.
Actually the reason why your broadcast reciever is not called when you click on pause,previous and next button is because ,you have set the pending intent to fire an acitivity,instead you have to set the pending intent to fire a boradcast
instead of this code snippet
PendingIntent nextPendingIntent=PendingIntent.getActivity
(this,3,new Intent().setAction("NEXT"),PendingIntent.FLAG_UPDATE_CURRENT);;
you have to correct it like this
PendingIntent nextPendingIntent=PendingIntent.getBroadcast
(this,3,new Intent().setAction("NEXT"),PendingIntent.FLAG_UPDATE_CURRENT);;
make corrections in all the three pending intent code which you have written
UPDATE
The reason why you still not receiving the broadcast in your Broadcast Receiver is because you are programitically registering your Receiver as LocalBroadCast
When using with PendingIntent, LocalBroadcast will not receive the Broadcast
so please remove this Line
LocalBroadcastManager.getInstance(this).registerReceiver(
new NotificationReciever(),new IntentFilter("PREVIOUS"));
LocalBroadcastManager.getInstance(this).registerReceiver(
new NotificationReciever(),new IntentFilter("PAUSE"));
LocalBroadcastManager.getInstance(this).registerReceiver(
new NotificationReciever(),new IntentFilter("NEXT"));
Instead, you only have to register the receiver in the Manifest.xml file
or
programitically you can register in code as
NotificationReciever mReciever = new NotificationReciever();
this.registerReceiver(
mReciever,new IntentFilter("PREVIOUS"));
this.registerReceiver(
mReciever,new IntentFilter("PAUSE"));
this.registerReceiver(
mReciever,new IntentFilter("NEXT"));
but if you register this programitically, make sure you unregister it while service is getting destroyed. Otherwise you may LEAK the BroadcastReceiver Object
I'm trying to make an app that schedules an alarm at a certain time in which the user is suppose to take their medication. I have done everything that most guides and the documentation say it's required to setup the alarm. Here is the method I call when the user presses the button:
private void scheduleAlarm() {
Intent intentAlarm = new Intent(this, AlarmReceiver.class);
PendingIntent pIntent = PendingIntent.getBroadcast(this, alarmeID, intentAlarm, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, alarmeTime.getTimeInMillis(), pIntent);
}
Here is the AlarmReceiver.class
public class AlarmReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Ringtone ringtone = RingtoneManager.getRingtone(context, notification);
ringtone.play();
}
}
and I have put these two lines in the manifest:
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<receiver android:name=".services.AlarmReceiver"/>
And yet, my application is not working. The alarm doesn't go off. What am I doing wrong? What else is needed?
You are currently playing alarm ringtone from BroadcastReceiver. Instead of doing that, you can open an Activity and start playing alarm tone from there. You can use stop() method to stop it (may be from button click within the activity).
BroadcastReceiver
#Override
public void onReceive(Context context, Intent intent) {
//start activity
Intent i = new Intent(CurrentActivity.this, NextActivity.class);
context.startActivity(i);
}
NextActivity.class
//Start your ringtone here
Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Ringtone ringtone = RingtoneManager.getRingtone(context, notification);
ringtone.play();
//Somewhere inside button click
{
ringtone.stop();
}
Just copy pasting this won't work. I believe you can take concept from
here and implement as per your requirement.
And currently there is no any related code that will stop your ringtone.
Okay I am not really sure wither you are asking how to stop the alarm ? or that the alarm is not working at all after the user presses the button but anyhow.
I replaced The alarm with a repeated alarm and launched it using onCreate method and I closed the app and waited for the alarm to go off and it did!
And here is my code just in case:
private void scheduleAlarm() {
Intent intentAlarm = new Intent(this, AlarmReceiver.class);
PendingIntent pIntent = PendingIntent.getBroadcast(this, uniqueID, intentAlarm, PendingIntent.FLAG_UPDATE_CURRENT);
alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
// alarmManager.set(AlarmManager.RTC_WAKEUP, 10000, pIntent);
alarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 1000, 1000, pIntent);
}
Everything else I copied and pasted from your code above.
Edit: If you are seeking the repeated alarm then this the page to go to:
https://developer.android.com/training/scheduling/alarms.html
note: my virtual device API is 24
Change the code as below -
alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 1000*60, pIntent);
May be your alarmeTime.getTimeInMillis() is not properly set. You can try the above line. It fires an alarm after 1 min.
I have two notification actions, one to stop the service and one to restart it.
I am successfully starting the service but I can't stop it with this code:
PendingIntent show = PendingIntent.getService(this, 1, svc, PendingIntent.FLAG_UPDATE_CURRENT);
PendingIntent hide = PendingIntent.getService(this, 1, svc, PendingIntent.FLAG_CANCEL_CURRENT);
Any ideas?
Not a duplicate as my question is specifically about notification actions, not buttons (I have no problems getting my buttons to stop and start the service).
That flag alone will not stop the service. I would recommend that you make the stop action instead fire a custom BroadcastReceiver class which runs the stopService() method inside of its onReceive(). Let me know if you need help setting something like that up in more detail.
Edited answer:
Change your Intent and PendingIntent for the hide action to this:
Intent intentHide = new Intent(this, StopServiceReceiver.class);
PendingIntent hide = PendingIntent.getBroadcast(this, (int) System.currentTimeMillis(), intentHide, PendingIntent.FLAG_CANCEL_CURRENT);
Then make the StopServiceReceiver like this, where ServiceYouWantStopped.class is the service to be stopped:
public class StopServiceReceiver extends BroadcastReceiver {
public static final int REQUEST_CODE = 333;
#Override
public void onReceive(Context context, Intent intent) {
Intent service = new Intent(context, ServiceYouWantStopped.class);
context.stopService(service);
}
}
Make sure the BroadcastReceiver you just made is declared in your manifest file:
<receiver
android:name=".StopServiceReceiver"
android:enabled="true"
android:process=":remote" />
Hope this helps!
I am able to read message of user when the application gets installed. But what I want is that even after the application is closed, I should be able to read user message after a fixed interval of time. For example, application like Walnut that reads specific message and gives alerts automatically if any new message has come. How can I do the same.
Use Alarm manager and Pending Intent
Initiate Alarm manager here.
AlarmManager alarmMgr = (AlarmManager) this
.getSystemService(Context.ALARM_SERVICE);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
new Intent(this, AlarmReceiver_update.class),
PendingIntent.FLAG_CANCEL_CURRENT);
alarmMgr.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
0, yourTimeInterval, pendingIntent);
And in AlarmReceiver_update class:
public class AlarmReceiver_update extends BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent)
{
// Do whatever you want
}
}
And in Your AndroidManifest file register your receiver:
<receiver android:name="com.x.y.AlarmReceiver_update" >
<intent-filter>
<action android:name="android.test.BROADCAST" />
</intent-filter>
</receiver>
This is not complete just sample you have any doubt just comment.
You shuold use an alarm manager to set a repeating alarm.
Then you should setup a BroadcastReceiver Service that read the user messages onRecieve.
public class AlarmReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
// Run the task to read the user messages
}
}
This is a good tutorial
Have a look at the below links to learn how to notify the user if you found new message.
http://javatechig.com/android/repeat-alarm-example-in-android#3-defining-alarm-broadcastreceiver
http://developer.android.com/training/notify-user/build-notification.html