We Keep Coding

Android background service stopped/paused on Huawei

I have developed an Android app that has a background service that runs endlessly and saves on a local SqLite DB the results of bluetooth scan and GPS positions. Only on Huawei devices this service seems to be paused or stopped for some minutes (I noticed that after inserting some log into the code): in theese minutes any log is written.
. I tried without success to change some settings of device (battery optimization).
Do you have some advice to solve the problem?
Below you can find a snipped of the service.
public class MyService extends Service {
public MyService() {
super();
}
#Override
public void onCreate() {
super.onCreate();
...
...
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
startForeground(1031, getNotification());
}
final Intent serviceIntent = new Intent(getApplicationContext(), MyService.class);
ServiceConnection connection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName className, IBinder service) {
MyServiceBinder binder = (MyServiceBinder) service;
started = true;
}
#Override
public void onServiceDisconnected(ComponentName arg0) {
started = false;
}
};
bindService(serviceIntent, connection, Context.BIND_AUTO_CREATE);
}
#RequiresApi(Build.VERSION_CODES.O)
private Notification getNotification() {
NotificationChannel channel = new NotificationChannel("channel_01", "My Channel", NotificationManager.IMPORTANCE_DEFAULT);
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
Notification.Builder builder = new Notification.Builder(getApplicationContext(), "channel_01");
builder.setContentTitle(getString(R.string.app_name))
.setAutoCancel(true)
.setColor(getResources().getColor(R.color.colorAccent))
.setContentText(getString(R.string.app_name))
.setSmallIcon(R.drawable.ic_stat_onesignal_default);
return builder.build();
}
public class MyServiceBinder extends Binder {
MyService getService() {
return MyService.this;
}
}
private void stopForegroundService()
{
// Stop foreground service and remove the notification.
stopForeground(true);
// Stop the foreground service.
stopSelf();
}
#Override
public void onDestroy() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
stopForegroundService();
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
//Restart after 5 secs
Handler h = new Handler(Looper.getMainLooper());
h.postDelayed(new Runnable() {
#Override
public void run() {
GenericUtility.launchService(MyService.class, getApplication());
}
}, 5000);
}
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
...
...
initScanLoop();
initLocationManager();
return Service.START_STICKY;
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
return new MyServiceBinder();
}
#Override
public boolean onUnbind(Intent intent) {
boolean res = super.onUnbind(intent);
return res;
}
/*Init bluetooth handler*/
private void initScanLoop() {
final Handler h = new Handler(Looper.getMainLooper());
h.post(new Runnable() {
#Override
public void run() {
scanLeDevice();
hBeacon.postDelayed(this, SCAN_DURATION + 10000);
}
});
}
private void scanLeDevice() {
if(mLEScanner != null && !scanning.get() && !stopScan) {
scanning.set(true);
mLEScanner.startScan(null, settings, mScanCallback);
Handler mHandler = new Handler(Looper.getMainLooper());
mHandler.postDelayed(new Runnable() {
#Override
public void run() {
if(scanning.get()) {
stopScanLeDevice();
}
}
}, SCAN_DURATION);
}
}
private void stopScanLeDevice() {
scanning.set(false);
if(mLEScanner != null) {
mLEScanner.stopScan(mScanCallback);
}
}
/*Finish bluetooth handler*/
/*Init GPS handler*/
private void initLocationManager() {
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
createLocationChangedCallback();
locationListener = new BeaconScanLocationListener(locationChangedCallback);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
}
private void createLocationChangedCallback() {
locationChangedCallback = new LocationChangedCallback() {
#Override
public void callback(final Location location) {
try {
//GPS callcback
} catch(Exception e) {
}
}
#Override
public void enabledDisabled(boolean enabled) {
}
};
}
/*Finish GPS handler*/
}
UPDATE
I improved app functionality replacing bluetooth scanning with monitoring beacon in region function of Android Beacon Library.

You have to configure in settings for app can run in background for Huawei
you can check out this link here

This problem can you fix it by put your device in App launch normally the app manage by Huawei but you must make it manage manually after that Huawei can't put the service in sleep mode.

Close the activity from a broadcast receiver

My Project is about the call recorder.
I want when the call received, my transparent activity open with a button.
I open my activity from my broadcast receiver class.
in this activity, I have a toggle button to activate or deactivate my application.
When a call received, if my toggle button is on, it starts to record the call.
it works OK but when the call is finished, I close my activity from my broadcast receiver class.
like this: first, this is my activity when the call received:
public class Test extends Activity {
static Test tes;
ToggleButton toggleButton;
TextView txt_disable, txt_enable;
private static Context context;
private BroadcastReceiver _closeActivityReceiver = new CloseActivityReceiver();
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.test);
tes = this;
IntentFilter filter = new IntentFilter("closeNoInternetActivity");
this.registerReceiver(_closeActivityReceiver, filter);
toggleButton = findViewById(R.id.togglebtn);
txt_enable = findViewById(R.id.txt_enable);
txt_disable = findViewById(R.id.txt_disable);
if (isActivityRunning(MainActivity.class)) {
MainActivity.getInstance().finish();
}
final SharedPreferences pref = getSharedPreferences("TOGGLE", MODE_PRIVATE);
boolean sie = pref.getBoolean("STATE", true);
if (sie == true) {
Log.i("mhs", "true");
//to main activity toggleRecord fal hast pass inja user agar bekhad mitone k disable kone
toggleButton.setChecked(true);
toggleButton.setText(null);
toggleButton.setTextOn(null);
toggleButton.setTextOff(null);
toggleButton.setBackgroundResource(R.drawable.record_btn);
txt_disable.setVisibility(View.VISIBLE);
toggleButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
toggleRecord.setChecked(false);
toggleButton.setBackgroundResource(R.drawable.not_recording_btn);
finishAffinity();
}
});
} else {
Log.i("mhs", "false");
toggleButton.setChecked(false);
toggleButton.setText(null);
toggleButton.setTextOn(null);
toggleButton.setTextOff(null);
toggleButton.setBackgroundResource(R.drawable.not_recording_btn);
txt_enable.setVisibility(View.VISIBLE);
toggleButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
toggleRecord.setChecked(true);
toggleButton.setBackgroundResource(R.drawable.record_btn);
finishAffinity();
}
});
}
}
protected Boolean isActivityRunning(Class activityClass) {
ActivityManager activityManager = (ActivityManager) getBaseContext().getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningTaskInfo> tasks = activityManager.getRunningTasks(Integer.MAX_VALUE);
for (ActivityManager.RunningTaskInfo task : tasks) {
if (activityClass.getCanonicalName().equalsIgnoreCase(task.baseActivity.getClassName()))
return true;
}
return false;
}
private class CloseActivityReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
// close this damn activity!
}
}
#Override
public void onDestroy() {
super.onDestroy();
this.unregisterReceiver(this._closeActivityReceiver);
}
public static Test getInstance() {
return tes;
}
}
and here is my receiver:
here I start an activity from the receiver like this when I have a phone call
switch (state) {
case TelephonyManager.CALL_STATE_RINGING:
isIncoming = true;
callStartTime = new Date();
savedNumber = number;
onIncomingCallStarted(context, number, callStartTime);
Intent i = new Intent(context, Test.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
Log.i("mhs","zang khord");
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
if (lastState != TelephonyManager.CALL_STATE_RINGING) {
isIncoming = false;
callStartTime = new Date();
onOutgoingCallStarted(context, savedNumber, callStartTime);
Log.i("mhs","ghat kard");
} else {
isIncoming = true;
callStartTime = new Date();
onIncomingCallAnswered(context, savedNumber, callStartTime);
//vaghti zang mikhore va ghat mikone dar akhar
Log.i("mhs","ghatid");
Intent in = new Intent("closeNoInternetActivity");
context.sendBroadcast(in);
}
and here I close it like this:
case TelephonyManager.CALL_STATE_OFFHOOK:
if (lastState != TelephonyManager.CALL_STATE_RINGING) {
isIncoming = false;
callStartTime = new Date();
onOutgoingCallStarted(context, savedNumber, callStartTime);
Log.i("mhs","ghat kard");
} else {
isIncoming = true;
callStartTime = new Date();
onIncomingCallAnswered(context, savedNumber, callStartTime);
//vaghti zang mikhore va ghat mikone dar akhar
Log.i("mhs","ghatid");
Intent in = new Intent("closeNoInternetActivity");
context.sendBroadcast(in);
}
My problem is that I think my activity doesn't close, and it reminds in the background and causes my activity is transparent, then again I have a phone call. my ringing screen doesn't show on screen.
I think If I able to close my Test activity in right way, my problem solved.

Just copy and paste below code. it should work. If it doesn't then try modifying finish method you can explicitly call destroy method if needed.
public class Test extends Activity {
static Test tes;
private static Context context;
ToggleButton toggleButton;
TextView txt_disable, txt_enable;
private BroadcastReceiver _closeActivityReceiver = new CloseActivityReceiver();
public static Test getInstance() {
return tes;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.test);
tes = this;
IntentFilter filter = new IntentFilter("closeNoInternetActivity");
this.registerReceiver(_closeActivityReceiver, filter);
toggleButton = findViewById(R.id.togglebtn);
txt_enable = findViewById(R.id.txt_enable);
txt_disable = findViewById(R.id.txt_disable);
if (isActivityRunning(MainActivity.class)) {
MainActivity.getInstance().finish();
}
final SharedPreferences pref = getSharedPreferences("TOGGLE", MODE_PRIVATE);
boolean sie = pref.getBoolean("STATE", true);
if (sie == true) {
Log.i("mhs", "true");
//to main activity toggleRecord fal hast pass inja user agar bekhad mitone k disable kone
toggleButton.setChecked(true);
toggleButton.setText(null);
toggleButton.setTextOn(null);
toggleButton.setTextOff(null);
toggleButton.setBackgroundResource(R.drawable.record_btn);
txt_disable.setVisibility(View.VISIBLE);
toggleButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
toggleRecord.setChecked(false);
toggleButton.setBackgroundResource(R.drawable.not_recording_btn);
finishAffinity();
}
});
} else {
Log.i("mhs", "false");
toggleButton.setChecked(false);
toggleButton.setText(null);
toggleButton.setTextOn(null);
toggleButton.setTextOff(null);
toggleButton.setBackgroundResource(R.drawable.not_recording_btn);
txt_enable.setVisibility(View.VISIBLE);
toggleButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
toggleRecord.setChecked(true);
toggleButton.setBackgroundResource(R.drawable.record_btn);
finishAffinity();
}
});
}
}
protected Boolean isActivityRunning(Class activityClass) {
ActivityManager activityManager = (ActivityManager) getBaseContext().getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningTaskInfo> tasks = activityManager.getRunningTasks(Integer.MAX_VALUE);
for (ActivityManager.RunningTaskInfo task : tasks) {
if (activityClass.getCanonicalName().equalsIgnoreCase(task.baseActivity.getClassName()))
return true;
}
return false;
}
#Override
public void onDestroy() {
super.onDestroy();
this.unregisterReceiver(this._closeActivityReceiver);
}
public void finish() {
super.finish();
}
private class CloseActivityReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
// close this damn activity!
finish();
}
}
}

Android Music player not start automatically from onCreate

Hello i had implement code of Music service i want to create demo of music player but it not start automatically from onCreate() i want to start player automatically when activity open. here below i put code for Activity and service please help me any help will be appreciate.
public class MainActivity extends Activity {
private ArrayList<Song> songList;
private ListView songView;
private MusicService musicSrv;
private Intent playIntent;
private boolean musicBound = false;
private MusicController controller;
private boolean paused = false, playbackPaused = false;
private ServiceConnection musicConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
MusicService.MusicBinder binder = (MusicService.MusicBinder) service;
musicSrv = binder.getService();
musicSrv.setList(songList);
musicBound = true;
}
#Override
public void onServiceDisconnected(ComponentName name) {
musicBound = false;
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
songView = (ListView) findViewById(R.id.song_list);
songList = new ArrayList<Song>();
getSongList();
Collections.sort(songList, new Comparator<Song>() {
public int compare(Song a, Song b) {
return a.getTitle().compareTo(b.getTitle());
}
});
SongAdapter songAdt = new SongAdapter(this, songList);
songView.setAdapter(songAdt);
songPicked();
}
#Override
protected void onStart() {
super.onStart();
if (playIntent == null) {
playIntent = new Intent(this, MusicService.class);
bindService(playIntent, musicConnection, Context.BIND_AUTO_CREATE);
startService(playIntent);
}
}
public void songPicked() {
musicSrv.setSong(0);
musicSrv.playSong();
}
#Override
protected void onPause() {
super.onPause();
paused = true;
}
#Override
protected void onResume() {
super.onResume();
if (paused) {
paused = false;
}
}
#Override
protected void onStop() {
controller.hide();
super.onStop();
}
#Override
protected void onDestroy() {
stopService(playIntent);
musicSrv = null;
super.onDestroy();
}
}
Here below i put service code also.
public class MusicService extends Service implements
MediaPlayer.OnPreparedListener, MediaPlayer.OnErrorListener,
MediaPlayer.OnCompletionListener {
private final IBinder musicBind = new MusicBinder();
private MediaPlayer player;
private ArrayList<Song> songs;
private int songPosn;
private String songTitle = "";
private Random rand;
public void onCreate() {
super.onCreate();
songPosn = 0;
rand = new Random();
player = new MediaPlayer();
initMusicPlayer();
}
public void initMusicPlayer() {
player.setWakeMode(getApplicationContext(),
PowerManager.PARTIAL_WAKE_LOCK);
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
player.setOnPreparedListener(this);
player.setOnCompletionListener(this);
player.setOnErrorListener(this);
}
public void setList(ArrayList<Song> theSongs) {
songs = theSongs;
}
#Override
public IBinder onBind(Intent intent) {
return musicBind;
}
#Override
public boolean onUnbind(Intent intent) {
player.stop();
player.release();
return false;
}
public void playSong() {
player.reset();
Song playSong = songs.get(0);
songTitle = playSong.getTitle();
long currSong = playSong.getID();
Uri trackUri = ContentUris.withAppendedId(
android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
currSong);
try {
player.setDataSource(getApplicationContext(), trackUri);
} catch (Exception e) {
Log.e("MUSIC SERVICE", "Error setting data source", e);
}
try {
player.prepare();
} catch (IOException e) {
e.printStackTrace();
}
}
public void setSong(int songIndex) {
songPosn = songIndex;
}
#Override
public void onCompletion(MediaPlayer mp) {
if (player.getCurrentPosition() > 0) {
mp.reset();
}
}
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
mp.reset();
return false;
}
#Override
public void onPrepared(MediaPlayer mp) {
mp.start();
playSong();
}
#Override
public void onDestroy() {
stopForeground(true);
}
public class MusicBinder extends Binder {
MusicService getService() {
return MusicService.this;
}
}
}
I just want to start player when application start automatically without any click. but it display unfortunately stopped with null object reference of Media player. I had never work with service also with music player.
Null pointer exception throws because music service object returns null so.

Finally solved as per #vladMatvienko answer thanks for your support man.
private ServiceConnection musicConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
MusicService.MusicBinder binder = (MusicService.MusicBinder) service;
musicSrv = binder.getService();
musicSrv.setList(songList);
musicBound = true;
songPicked();
}
#Override
public void onServiceDisconnected(ComponentName name) {
musicBound = false;
}
};

Android Media Player Null Pointer Exception

I know what a null pointer exception is i have tried using
MediaPlayer mp = new MediaPlayer();
and
public int check()
{
if(mp!=null)
{
return 1;
}
else
{
return 2;
}
}
doesn't helps.
This is the error im getting-
java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.openaisearch.www.musicplayer/com.openaisearch.www.musicplayer.MainActivity}:
java.lang.NullPointerException: Attempt to invoke virtual method
'boolean com.openaisearch.www.musicplayer.Music.check()' on a null
object reference
public class MainActivity extends AppCompatActivity {
ArrayList<String> mSongsList = new ArrayList<>() ;
ArrayList<Long> SongsPath = new ArrayList<>() ;
Button btnPlay;
Music mService;
SeekBar seekBar;
ListView lv;
boolean mBound = false;
private ServiceConnection mConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName className,
IBinder service) {
Music.LocalBinder binder = (Music.LocalBinder) service;
mService = binder.getService();
mBound = true;
}
#Override
public void onServiceDisconnected(ComponentName arg0) {
mBound = false;
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = new Intent(this, Music.class);
bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
startService(intent);
btnPlay = (Button) findViewById(R.id.buttonPlay);
seekBar = (SeekBar) findViewById(R.id.seekBar);
lv = (ListView) findViewById(R.id.list);
getAudioList();
ArrayAdapter arrayAdapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1,mSongsList);
lv.setAdapter(arrayAdapter);
onSongClick();
setSeekBar();
check();
}
#Override
protected void onStop() {
super.onStop();
if (mBound) {
unbindService(mConnection);
mBound = false;
}
}
public void getAudioList() {
String orderBy = MediaStore.Audio.Media.TITLE ;
String selection = MediaStore.Audio.Media.IS_MUSIC + " != 0";
Cursor mCursor = getContentResolver().query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Audio.Media.TITLE,
MediaStore.Audio.Media._ID }, selection, null, orderBy);
int count = mCursor.getCount();
while (mCursor.moveToNext()) {
mSongsList.add(mCursor.getString(mCursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE)));
SongsPath.add(mCursor.getLong(mCursor
.getColumnIndexOrThrow(MediaStore.Audio.Media._ID)));
}
mCursor.close();
}
public void onSongClick()
{
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
mService.playSong(SongsPath.get(position));
if(btnPlay.getText() == "Play")
{
btnPlay.setText("Pause");
}
}
});
}
public void onButtonClick(View view) {
int a = mService.stopMusic();
if(a == 1)
{
btnPlay.setText("Play");
}
else if (a ==2)
{
btnPlay.setText("Pause");
}
}
public void check()
{
boolean check = mService.check();
}
public void setSeekBar()
{
seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (fromUser )
{
mService.setProg(progress*1000);
}
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
}
}
Service-
public class Music extends Service {
Long b;
MediaPlayer mp;
private final IBinder mBinder = new LocalBinder();
public class LocalBinder extends Binder {
Music getService() {
return Music.this;
}
}
public void playSong(Long a) {
if (a!= b)
{ if(mp!=null)
{
mp.stop();
mp.release();
mp=null;
}
b =a;
Uri contentUri = ContentUris.withAppendedId(
android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, a);
mp = new MediaPlayer();
mp.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
mp.setDataSource(getApplicationContext(), contentUri);
mp.prepare();
mp.setLooping(true);
mp.start();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public int stopMusic()
{
if(mp.isPlaying())
{
mp.pause();
return 1;
}
else if (mp!=null)
{
mp.start();
return 2;
}
else
{
return 0;
}
}
public void setProg(int a)
{ if(mp!=null)
{
mp.seekTo(a);
}
}
public boolean check()
{
if(mp!=null)
{
return true;
}
else
{
return false;
}
}
#Override
public IBinder onBind(Intent intent) {
return mBinder;
}
}

You are not checking if the service has been connected to the activity or not using mbound in ur function.
public void check()
{
i f(mBound)
{
boolean check = mService.check();
}
}

You're probably getting the NPE from this line: boolean check = mService.check(); So it's mService that is null, not mp

I think you trying to bind service that is not started yet. Try to call startService(intent); before bindService(intent, mConnection, Context.BIND_AUTO_CREATE);

Your service class should follow this format; overwrite the onCreate() method
you are getting NPE because mService is null in line: mService.check();
public class MyService extends Service {
private Binder binder;
#Override
public void onCreate() {
super.onCreate();
binder = new Binder();
}
#Override
public IBinder onBind(Intent intent) {
return binder;
}
public class Binder extends android.os.Binder {
public MyService getService() {
return MyService.this; // return instance
}
}
}

How to make a background service?

I need to execute some tasks when my application is closed.
I have made a service for do this and tried many things, but i don't have the good result.
If someone have a tutorial or some path to follow, it would be great
This is my service:
public class TrackersImporter extends Service {
private static TrackersImporter instance;
private static long refreshDelay = 1; // Minutes
private Looper mServiceLooper;
private ServiceHandler mServiceHandler;
private boolean isInit = false;
public ArrayList<Tracker> trackers = new ArrayList<>();
public static TrackersImporter getInstance(){
if (instance == null)
instance = new TrackersImporter();
return instance;
}
#Override
public void onCreate() {
HandlerThread thread = new HandlerThread("TrackersImporter",
Process.THREAD_PRIORITY_BACKGROUND);
thread.start();
mServiceLooper = thread.getLooper();
mServiceHandler = new ServiceHandler(mServiceLooper);
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
try {
Toast.makeText(this, "onStartCommand", Toast.LENGTH_SHORT).show();
Message message = mServiceHandler.obtainMessage();
message.arg1 = startId;
mServiceHandler.sendMessage(message);
} catch (Exception e) {
Log.w("TrackersImporter", e.getMessage());
}
return START_STICKY;
}
public void addTracker(Tracker tracker) {
trackers.add(tracker);
}
protected void showToast(final String msg){
Handler handler = new Handler(Looper.getMainLooper());
handler.post(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(), msg, Toast.LENGTH_SHORT).show();
}
});
}
// Object responsible for
private final class ServiceHandler extends Handler {
public ServiceHandler(Looper looper) {
super(looper);
}
#Override
public void handleMessage(Message msg) {
addTracker(Runkeeper.getInstance(MainActivity.getActivity()));
addTracker(Strava.getInstance(MainActivity.getActivity()));
startImport(MainActivity.getActivity().getBaseContext(), MainActivity.getActivity().getAppUser(), trackers);
stopSelf(msg.arg1);
}
/**
* Perform data imports.
* Imports are performed only 1 time.
* Additional calls to this method are equivalent to no-op.
* Call init() then performImport() for each TrackerImportable
* #param user user receiving the datas
*/
public void startImport(Context context, User user, ArrayList<Tracker> trackers) {
Context ctx = MainActivity.getActivity().getApplicationContext();
LocalDateTime now = new LocalDateTime();
if (Preferences.getPref(ctx, "tracker_import_date") == "")
Preferences.setPref(ctx, "tracker_import_date", now.toString());
LocalDateTime past = LocalDateTime.parse(Preferences.getPref(ctx, "tracker_import_date"));
long duration = new Duration(past.toDateTime(), now.toDateTime()).getStandardMinutes();
if (isInit)
return;
if (duration > refreshDelay) {
Preferences.setPref(ctx, "tracker_import_date", now.toString());
for (Tracker tracker : trackers) {
if (tracker.isEnabled() && Tracker.isUserEnabled(context, tracker.getName())) {
tracker.init();
tracker.performImport(user);
}
}
}
isInit = true;
}
}
}
This is my mainActivity
public class MainActivity extends BaseActivity {
...
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
if (ConnectivityUtil.isConnected(this.getApplicationContext())) {
initGoogleFit();
initTrackers(appUser);
}
}
private void initTrackers(User user) {
Intent trackersIntentService = new Intent(this, TrackersImporter.class);
trackersIntentService.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
this.startService(trackersIntentService);
}
#Override
protected void onResume() {
...
if (ConnectivityUtil.isConnected(this.getApplicationContext())) {
initTrackers(appUser);
}
}
}

First Create one launcher Activity which is like your Main Activity.
In Activity "onCreate" Method you need to start Service and Do Some thing if you wont in Service "onStartCommand" Method.
public class MainActivity extends Activity {
ArrayList<Integer> list;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
startService(new Intent(MainActivity.this,TrackersImporter.class);
}
public class TrackersImporter extends Service {
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
// do something
Log.v(TAG ,"Service is started");
}
}
And also Register this Service at manifest.xml like this.
<service android:name=".TrackersImporter"></service>
if you like stop service
stopService(new Intent(MainActivity.this,TrackersImporter.class);