Develop Reference

How I can call BroadcastReceiver from intent service?

I am trying to call BroadcastReceiver from intent service but it is never called:
public class IntentServiceTest extends IntentService {
public IntentServiceTest() {
super("IntentServiceTest");
}
#Override
public void onCreate() {
super.onCreate();
}
#Override
public void onStart(#Nullable Intent intent, int startId) {
super.onStart(intent, startId);
}
#Override
protected void onHandleIntent(#Nullable Intent intent) {
while (true) {
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
Brodcast brodcast;
brodcast = new Brodcast();
IntentFilter intentFilter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(brodcast, intentFilter);
}
}
}
Here is my BroadcastReceiver:
public class Brodcast extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "BroadcastReceiver", Toast.LENGTH_SHORT).show();
String NOTIFICATION_CHANNEL_ID = "100";
String channelName = "My back";
NotificationChannel channel;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
channel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName, NotificationManager.IMPORTANCE_HIGH);
channel.setLightColor(Color.BLUE);
channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
NotificationManager manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
assert manager != null;
manager.createNotificationChannel(channel);
}
BluetoothAdapter bluetoothAdapter;
ArrayList<String> arrayList;
BluetoothDevice device;
NotificationManagerCompat notificationManagerCompat;
notificationManagerCompat = NotificationManagerCompat.from(context);
arrayList = new ArrayList<>();
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
bluetoothAdapter.startDiscovery();
String action = intent.getAction();
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (!arrayList.contains(device.getName())) {
arrayList.add(device.getName());
if (arrayList.size() >= 0) {
Toast.makeText(context, "s", Toast.LENGTH_SHORT).show();
}
}
Intent i = new Intent(context, MainActivity3.class);
i.putExtra("noti", NOTIFICATION_CHANNEL_ID);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, i, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder n = new NotificationCompat.Builder(context, NOTIFICATION_CHANNEL_ID);
Notification notification = n.setOngoing(true)
.setSmallIcon(R.drawable.ss)
.setContentTitle(arrayList.size() + device.getName())
.addAction(R.drawable.as, "Action", pendingIntent)
.setStyle(new NotificationCompat.BigTextStyle()
.bigText("App running"))
.setPriority(NotificationManager.IMPORTANCE_HIGH)
.setCategory(Notification.CATEGORY_SERVICE)
.build();
notificationManagerCompat.notify(1 , notification);
}
}
}
I need to call broadcast every 20 min; can anyone help me?

android service always running and notify user when needed

I need a service to make a notification whenever the user is in a moving car.
I use ActivityRecognition to find out when the user is in a car.the issue is I need my service to run even when the app is destroyed or removed by the user.
I tried running the service on a different process but after a few minutes the service stops working.I also tried using foreground service but I had the same issue with that to.
this is my service class.
public class SpeedCheckerService extends Service {
private final String CHANNEL_ID = "my_channel";
private static SpeedCheckerService speedCheckerService;
private ActivityRecognitionClient mActivityRecognitionClient;
private boolean started = false;
Date lastNotification;
CountDownTimer countDownTimer;
Intent intent;
#Override
public void onCreate() {
createNotificationChannel();
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public int onStartCommand(final Intent intent, int flags, int startId) {
this.intent=intent;
countDownTimer = new CountDownTimer(99999999,1000 * 60 * 1) {
#Override
public void onTick(long l) {
recognizeActivity();
}
#Override
public void onFinish() {
countDownTimer.start();
}
}.start();
return START_STICKY;
}
String detectedActivitiesToJson(ArrayList<DetectedActivity> detectedActivitiesList) {
Type type = new TypeToken<ArrayList<DetectedActivity>>() {}.getType();
System.out.println(detectedActivitiesList.toString());
if ((detectedActivitiesList.size()>=1)&&(detectedActivitiesList.get(0).getType() == DetectedActivity.STILL) && (detectedActivitiesList.get(0).getConfidence()) >= 60){
if(lastNotification!=null){
Calendar calendar = Calendar.getInstance();
calendar.setTime(lastNotification);
calendar.add(Calendar.MINUTE,5);
Date newDate = calendar.getTime();
calendar.clear();
System.out.println(lastNotification.toString());
System.out.println(newDate.toString());
if(newDate.after(calendar.getTime()) == true)
return null;
}
speedCheckerService.makeNotification();
lastNotification = Calendar.getInstance().getTime();
}
return new Gson().toJson(detectedActivitiesList, type);
}
public void makeNotification() {
createNotificationChannel();
Intent intent = new Intent(this, MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID)
.setContentTitle("title")
.setContentText("text")
.setPriority(NotificationCompat.PRIORITY_DEFAULT)
.setContentIntent(pendingIntent)
.setSmallIcon(R.drawable.mapbox_logo_icon)
.setColor(Color.parseColor("#00ff00"))
.setAutoCancel(true);
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(70, builder.build());
}
private void createNotificationChannel() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
CharSequence name = "guardian";
String description = "alerting user";
int importance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, name, importance);
channel.setDescription(description);
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
}
public void recognizeActivity() {
if((mActivityRecognitionClient==null)&&(!started))
{
mActivityRecognitionClient = new ActivityRecognitionClient(this);
mActivityRecognitionClient.requestActivityUpdates(0, PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT));
started = true;
}
speedCheckerService =this;
if(ActivityRecognitionResult.hasResult(intent))
{
ActivityRecognitionResult result = ActivityRecognitionResult.extractResult(intent);
ArrayList<DetectedActivity> detectedActivities = (ArrayList) result.getProbableActivities();
detectedActivitiesToJson(detectedActivities);
}
}
}
I would greatly appreciate if you can help me with my problem

Use foreground service instead of normal service and do the below changes
public class SampleService extends Service {
private NotificationManager mNotificationManager;
/**
* The identifier for the notification displayed for the foreground service.
*/
private static final int NOTIFICATION_ID = 1231234;
static void startService(Context context, String message) {
Intent startIntent = new Intent(context, SampleService.class);
startIntent.putExtra("inputExtra", message);
ContextCompat.startForegroundService(context, startIntent);
}
static void stopService(Context context) {
Intent stopIntent = new Intent(context, SampleService.class);
context.stopService(stopIntent);
}
private void createNotificationChannel() {
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
CharSequence name = "Sample Notification";
// Create the channel for the notification
NotificationChannel mChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, name,
NotificationManager.IMPORTANCE_DEFAULT);
mChannel.setSound(null, null);
// Set the Notification Channel for the Notification Manager.
notificationManager.createNotificationChannel(mChannel);
}
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
Log.d("Service", "onCreate");
createNotificationChannel();
mNotificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d("Service", "onStartCommand");
startForeground(NOTIFICATION_ID, getNotification(message);
**// This is important, When your service got killed it will try to restart //the service. But some android vendor phones are restricted this autostart**
return START_REDELIVER_INTENT;
}
#Override
public void onDestroy() {
super.onDestroy();
Log.d("Service", "Service Destroyed");
}
#Override
public void onTaskRemoved(Intent rootIntent) {
Log.e("Service", "onTaskRemoved");
super.onTaskRemoved(rootIntent);
}
private Notification getNotification(String contentMessage) {
String title = getString(R.string.notification_title,
DateFormat.getDateTimeInstance().format(new Date()));
NotificationCompat.Builder builder = new NotificationCompat.Builder(this,
NOTIFICATION_CHANNEL_ID).setContentTitle(title).setContentText(contentMessage)
.setSmallIcon(R.drawable.notification)
.setOngoing(true)
.setPriority(Notification.PRIORITY_MAX)
.setTicker(contentMessage)
.setAutoCancel(false)
.setWhen(System.currentTimeMillis());
return builder.build();
}
/**
* Returns true if this is a foreground service.
*
* #param context The {#link Context}.
*/
public boolean serviceIsRunningInForeground(Context context) {
ActivityManager manager = (ActivityManager) context.getSystemService(
Context.ACTIVITY_SERVICE);
for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(
Integer.MAX_VALUE)) {
if (getClass().getName().equals(service.service.getClassName())){
if (service.foreground){
return true;
}
}
}
return false;
}
}

You should use Foreground Service if you want service running even your app is in background or closed
https://androidwave.com/foreground-service-android-example/

Running an Alarm Service once a day on Oreo

I've created a service which consult notes if they are in recicle bin, it have to run once a day but with handler I think it will drain too much battery, So I need you help How can I do a task once a day without drain battery or other thing that's not a handler ?
When the app is launched the NotesApplication is created and start the NotesService class, it should be executing all day but it will drain battery, so I need to execute once a day
NotesApplication
public class NotesApplication extends Application {
String TAG = "NotesApplication";
Intent intent;
#Override
public void onCreate() {
// TODO: Implement this method
super.onCreate();
Log.d(TAG, "Application created");
intent = new Intent(getApplicationContext(), NotesService.class);
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
Log.d(TAG, "Foreground service started");
getApplicationContext().startForegroundService(intent);
}else if(Build.VERSION.SDK_INT < Build.VERSION_CODES.O){
Log.d(TAG, "Service started");
getApplicationContext().startService(intent);
}
}
Notes Service
public class NotesService extends Service {
ArrayList<Notes> listNotas;
String TAG = "NotesService";
SQLiteHelperConnection conn;
#Override
public void onCreate()
{
// TODO: Implement this method
super.onCreate();
Log.d(TAG, "Notes service created");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
final NotificationManager mNotific= (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
CharSequence name = "Axco";
String description = "Service";
int importance = NotificationManager.IMPORTANCE_MIN;
final String ChannelID="Service Channel";
NotificationChannel mChannel = new NotificationChannel(ChannelID, name, importance);
mChannel.setDescription(description);
mChannel.setLightColor(ThemeClass.getColor());
mChannel.canShowBadge();
mChannel.setShowBadge(true);
mNotific.createNotificationChannel(mChannel);
final int code = 101;
String body= "Service Running";
Notification notification = new Notification.Builder(this, ChannelID)
.setContentTitle(getPackageName())
.setContentText(body)
.setBadgeIconType(R.drawable.ic_launcher)
.setNumber(1)
.setSmallIcon(R.drawable.ic_launcher)
.setAutoCancel(true)
.build();
startForeground(code, notification);
}
conn = new SQLiteHelperConnection(this, "db_notas.db", null, 1);
listNotas = new ArrayList<Notes>();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId)
{
// TODO: Implement this method
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
final NotificationManager mNotific= (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
CharSequence name = "Axco";
String description = "Service";
int importance = NotificationManager.IMPORTANCE_MIN;
final String ChannelID="Service Channel";
NotificationChannel mChannel = new NotificationChannel(ChannelID, name, importance);
mChannel.setDescription(description);
mChannel.setLightColor(ThemeClass.getColor());
mChannel.canShowBadge();
mChannel.setShowBadge(true);
mNotific.createNotificationChannel(mChannel);
final int code = 101;
String body= "Service Running";
Notification notification = new Notification.Builder(this, ChannelID)
.setContentTitle(getPackageName())
.setContentText(body)
.setBadgeIconType(R.drawable.ic_launcher)
.setNumber(1)
.setSmallIcon(R.drawable.ic_launcher)
.setAutoCancel(true)
.build();
startForeground(code, notification);
}
final Handler handler = new Handler();
Runnable runnable = new Runnable(){
#Override
public void run()
{
// TODO: Implement this method
Log.d(TAG, "Service running");
listNotas.clear();
consult();
check();
handler.postDelayed(this, 15000);
}
};
handler.post(runnable);
return Service.START_STICKY;
}
private void consult(){
Log.d(TAG, "Consulting...");
SQLiteDatabase db = conn.getReadableDatabase();
Notes notas = null;
Cursor cursor = db.rawQuery("SELECT * FROM "+Utilities.TABLA_NOTA, null);
while (cursor.moveToNext()) {
notas = new Notes();
notas.setId(cursor.getString(0));
notas.setLastModified(cursor.getString(5));
notas.setLastModifiedDate(cursor.getString(7));
boolean a = Boolean.valueOf(cursor.getString(4));
if(a){
listNotas.add(notas);
}
}
}
private void check(){
//Do something
}
private void deleteNote(int position){
SQLiteDatabase db = conn.getWritableDatabase();
String[] parametros = {listNotas.get(position).getId()};
db.delete(Utilities.TABLA_NOTA, Utilities.ID+"=?", parametros);
listNotas.remove(position);
}
#Override
public IBinder onBind(Intent p1){
// TODO: Implement this method
return null;
}

Using Alarm Manager is efficient.
See implementation
AlarmManager am=(AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
Intent i= new Intent(context, AlarmManagerBroadcastReceiver.class);
//intent.putExtra(something you want to put);
PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
// check if it is more than 11 am. if so set alarm for next day
if (Calendar.getInstance().get(Calendar.HOUR_OF_DAY)) {
calendar.add(Calendar.DAY_OF_YEAR, 1);
}
// everyday at 11 am
calendar.set(Calendar.HOUR_OF_DAY, 9);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
AlarmManager.INTERVAL_DAY, pi);
// alarm set
Finally create a broadcast receiver to do the work you want.

Push notification service in Android

I am trying to make an app in Android Studio which sends a push notification every 15 seconds, using a service. The problem is that the mobiles I tested the code on acted really slowly when a notification pops up. When I use an emulator, it works fine. Does anyone know what makes this code really slow?
Thanks in advance!
MainActivity.java
public class MainActivity extends AppCompatActivity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent i = new Intent(this, MyService.class);
startService(i);
}
}
MyService.java
public class MyService extends Service {
public MyService() {
}
public void showPushNotification (){
NotificationCompat.Builder pushbericht;
final int IDnummer = 123;
pushbericht = new NotificationCompat.Builder(this);
pushbericht.setAutoCancel(true);
pushbericht.setSmallIcon(R.drawable.icoontje);
pushbericht.setContentTitle("Poll App");
pushbericht.setContentText("Hoi");
Intent intent = new Intent(this, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
pushbericht.setContentIntent(pendingIntent);
NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
nm.notify(IDnummer, pushbericht.build());
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Runnable r = new Runnable() {
#Override
public void run() {
for (int i = 0; i < 5; i++) {
long futureTime = System.currentTimeMillis() + 15000;
while (System.currentTimeMillis() < futureTime) {
synchronized (this) {
try {
wait(futureTime - System.currentTimeMillis());
showPushNotification();
} catch (InterruptedException e) {
}
}
}
}
}
};
Thread thread = new Thread(r);
thread.start();
return Service.START_STICKY;
}
#Override
public void onDestroy() {
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
}

Android IntentService for Notifications

I'm trying to make a service, that is completely independent from the activity and running all the time in background to send the notification about incoming event. I have solved the problem of service killing along with activity by returning START_STICKY value in onStartCommand. It works well, but then I have problem with sending notifications. The problem is in the setSmallIcon method. When i pass there the reference to R.drawable.ic_launcher, I have got error, which says, that icon == 0. Is there any way to make it work properly?
Here is my NotificationService.java
public class NotificationService extends IntentService {
private static final int UPDATE_TIME = 60 * 1000;
private ArrayList<Group> groups;
public NotificationService() {
super("NotficationService");
// TODO Auto-generated constructor stub
}
#Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
public void onCreate() {
super.onCreate();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
return START_STICKY;
}
private void showNotification(String name, int remindTime) {
Intent intent = new Intent();
intent.setClass(this, MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent pIntent = PendingIntent.getActivity(this, (int) System.currentTimeMillis(), intent, 0);
Uri sound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Notification n = new Notification.Builder(this)
.setContentTitle(contentTitle)
.setContentText(contentText)
.setContentIntent(pIntent)
.setSmallIcon(android.R.drawable.ic_delete)
.setSound(sound)
.setAutoCancel(true)
.build();
NotificationManager notificationManager =
(NotificationManager) getSystemService(NOTIFICATION_SERVICE);
notificationManager.notify(0, n);
}
#Override
protected void onHandleIntent(Intent intent) {
while(true) {
checkForNotification();
try {
Thread.sleep(UPDATE_TIME);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

Try using:
.setSmallIcon(Resources.getSystem().getDrawable(android.R.drawable.ic_delete))
instead of
.setSmallIcon(android.R.drawable.ic_delete)