The document describes code for implementing location tracking services in Android. It discusses using a HandlerThread and Handler to perform background location tracking on a recurring schedule. The code samples show setting up the HandlerThread, creating Handler subclasses to request location updates and send network requests, and scheduling the service to run every 5 minutes using JobScheduler. The smart service implementation reduces the number of location updates by using JobScheduler to run on a schedule and broadcasts to trigger the network handler.

1. Yonatan V.Levin levin.yonatan
parahallGoogle Developer Expert

2. >100 Cities > 30M usersRuby, Go, Python, Microservices
Ooooops...

3. Making genetic tests
accessible

4. ~ 2900 members Largest Android Active Community

5. What Do We Do?
● Android Fundamentals
● Android UI / UX
● Community Hackathon
● Android Performance
● Mentors Program
● Active community

6. VOTE HERE:
https://goo.gl/tsmeK2

7. Saving galaxy with 1% of battery

8. Wild Wild West

9. It’s endless way to screw things

17. public class GettLocationService extends Service implements
Handler.Callback
public void onCreate() {
handlerThread = new HandlerThread("RebelServiceHandlerThread");
handlerThread.start();
Looper looper = handlerThread.getLooper();
handler = new Handler(looper, this);
handler.sendEmptyMessage(WHAT_MAKE_NETWORK_REQUEST);
}

18. My $0.02

20. Main
Activity
Naive
Service
HandlerThread
Looper
Location
Handler
Network
Handler
Broadcast
Receiver
Location
Tracker
BOOT_COMPLETED
Receiver
AlarmManager
Every 5 min

21. @Override public void onCreate() {
super.onCreate();
handlerThread = new HandlerThread("MyHandlerThread");
handlerThread.start();
looper = handlerThread.getLooper();
locationHandler = new LocationHandler(looper, getApplicationContext());
mReceiver = new NaiveBroadcastReceiver();
mNaiveNetworkHandler = new NetworkHandler(looper);
}
public class NaiveService extends Service {

22. @Override public void onCreate() {
super.onCreate();
handlerThread = new HandlerThread("MyHandlerThread");
handlerThread.start();
looper = handlerThread.getLooper();
locationHandler = new LocationHandler(looper, getApplicationContext());
mReceiver = new NaiveBroadcastReceiver();
mNaiveNetworkHandler = new NetworkHandler(looper);
}
public class NaiveService extends Service {

23. @Override public void onCreate() {
super.onCreate();
handlerThread = new HandlerThread("MyHandlerThread");
handlerThread.start();
looper = handlerThread.getLooper();
locationHandler = new LocationHandler(looper, getApplicationContext());
mNaiveNetworkHandler = new NetworkHandler(looper);
mReceiver = new NaiveBroadcastReceiver();
}
public class NaiveService extends Service {

24. @Override public void onCreate() {
super.onCreate();
handlerThread = new HandlerThread("MyHandlerThread");
handlerThread.start();
looper = handlerThread.getLooper();
locationHandler = new LocationHandler(looper, getApplicationContext());
mNaiveNetworkHandler = new NetworkHandler(looper);
mReceiver = new NaiveBroadcastReceiver();
}
public class NaiveService extends Service {

25. public int onStartCommand(Intent intent, int flags, int startId) {
LocalBroadcastManager.getInstance(this)
.registerReceiver(mReceiver,
new IntentFilter(LocationBaseBroadcast.ACTION_NEW_LOCATION_ARRIVED));
locationHandler.removeMessages(LocationHandler.WHAT_LOCATION_REQUEST);
locationHandler.sendEmptyMessage(LocationHandler.WHAT_LOCATION_REQUEST);
return super.onStartCommand(intent, flags, startId);
}
public class NaiveService extends Service {

26. public int onStartCommand(Intent intent, int flags, int startId) {
LocalBroadcastManager.getInstance(this)
.registerReceiver(mReceiver,
new IntentFilter(LocationBaseBroadcast.ACTION_NEW_LOCATION_ARRIVED));
locationHandler.removeMessages(LocationHandler.WHAT_LOCATION_REQUEST);
locationHandler.sendEmptyMessage(LocationHandler.WHAT_LOCATION_REQUEST);
return super.onStartCommand(intent, flags, startId);
}
public class NaiveService extends Service {

27. public int onStartCommand(Intent intent, int flags, int startId) {
LocalBroadcastManager.getInstance(this)
.registerReceiver(mReceiver,
new IntentFilter(LocationBaseBroadcast.ACTION_NEW_LOCATION_ARRIVED));
locationHandler.removeMessages(LocationHandler.WHAT_LOCATION_REQUEST);
locationHandler.sendEmptyMessage(LocationHandler.WHAT_LOCATION_REQUEST);
return super.onStartCommand(intent, flags, startId);
}
public class NaiveService extends Service {

28. public int onStartCommand(Intent intent, int flags, int startId) {
LocalBroadcastManager.getInstance(this)
.registerReceiver(mReceiver,
new IntentFilter(LocationBaseBroadcast.ACTION_NEW_LOCATION_ARRIVED));
locationHandler.removeMessages(LocationHandler.WHAT_LOCATION_REQUEST);
locationHandler.sendEmptyMessage(LocationHandler.WHAT_LOCATION_REQUEST);
return super.onStartCommand(intent, flags, startId);
}
public class NaiveService extends Service {

29. public int onStartCommand(Intent intent, int flags, int startId) {
LocalBroadcastManager.getInstance(this)
.registerReceiver(mReceiver,
new IntentFilter(LocationBaseBroadcast.ACTION_NEW_LOCATION_ARRIVED));
locationHandler.removeMessages(LocationHandler.WHAT_LOCATION_REQUEST);
locationHandler.sendEmptyMessage(LocationHandler.WHAT_LOCATION_REQUEST);
return super.onStartCommand(intent, flags, startId);
}
public class NaiveService extends Service {

30. @Override public void onDestroy() {
LocalBroadcastManager.getInstance(this).unregisterReceiver(mReceiver);
locationHandler.removeCallbacksAndMessages(null);
mNaiveNetworkHandler.removeCallbacksAndMessages(null);
locationHandler.stop();
locationHandler = null;
mNaiveNetworkHandler = null;
looper.quit();
handlerThread.quit();
locationHandler = null;
}
public class NaiveService extends Service {

31. public class LocationHandler extends Handler {
LocationHandler(Looper looper, Context context) {
super(looper);
locationTracker = new LocationTracker(context, getLooper());
}
public void handleMessage(Message msg) {
switch (msg.what) {
case WHAT_LOCATION_REQUEST:
sendEmptyMessageDelayed(WHAT_LOCATION_REQUEST, FIVE_MINUTES);
locationTracker.start();
}
}

32. public class LocationHandler extends Handler {
LocationHandler(Looper looper, Context context) {
super(looper);
locationTracker = new LocationTracker(context, getLooper());
}
public void handleMessage(Message msg) {
switch (msg.what) {
case WHAT_LOCATION_REQUEST:
sendEmptyMessageDelayed(WHAT_LOCATION_REQUEST, FIVE_MINUTES);
locationTracker.start();
}
}

33. public class LocationHandler extends Handler {
LocationHandler(Looper looper, Context context) {
super(looper);
locationTracker = new LocationTracker(context, getLooper());
}
public void handleMessage(Message msg) {
switch (msg.what) {
case WHAT_LOCATION_REQUEST:
sendEmptyMessageDelayed(WHAT_LOCATION_REQUEST, FIVE_MINUTES);
locationTracker.start();
}
}

34. public class LocationHandler extends Handler {
void stop() {
locationTracker.stop();
}

35. class LocationTracker {
mLocationManager.requestSingleUpdate(LocationManager.GPS_PROVIDER,
mGpsLocationListener,
looper);
mLocationManager.requestSingleUpdate(LocationManager.NETWORK_PROVIDER,
mNetworkLocationListener, looper);

36. class LocationTracker {
private void broadcastLocation(Location location) {
if (mWeakReference.get() != null) {
Intent intent = new
Intent(NaiveService.NaiveBroadcastReceiver.ACTION_NEW_LOCATION_ARRIVED);
intent.putExtra(NaiveService.NaiveBroadcastReceiver.LOCATION_KEY, location);
LocalBroadcastManager.getInstance(mWeakReference.get()).sendBroadcast(intent);
}
}

37. class LocationTracker {
private void broadcastLocation(Location location) {
if (mWeakReference.get() != null) {
Intent intent = new
Intent(NaiveService.NaiveBroadcastReceiver.ACTION_NEW_LOCATION_ARRIVED);
intent.putExtra(NaiveService.NaiveBroadcastReceiver.LOCATION_KEY, location);
LocalBroadcastManager.getInstance(mWeakReference.get()).sendBroadcast(intent);
}
}

38. class LocationTracker {
private void broadcastLocation(Location location) {
if (mWeakReference.get() != null) {
Intent intent = new
Intent(NaiveService.NaiveBroadcastReceiver.ACTION_NEW_LOCATION_ARRIVED);
intent.putExtra(NaiveService.NaiveBroadcastReceiver.LOCATION_KEY, location);
LocalBroadcastManager.getInstance(mWeakReference.get()).sendBroadcast(intent);
}
}

39. public class NaiveBroadcastReceiver extends LocationBaseBroadcast {
public void onReceive(Context context, Intent intent) {
Location location = intent.getExtras().getParcelable(LOCATION_KEY);
Message message =
mNaiveNetworkHandler.obtainMessage(NetworkHandler.WHAT_SEND_NAIVE_REPORT,
location);
mNaiveNetworkHandler.sendMessage(message);
}
}

40. public class NaiveBroadcastReceiver extends LocationBaseBroadcast {
public void onReceive(Context context, Intent intent) {
Location location = intent.getExtras().getParcelable(LOCATION_KEY);
Message message =
mNaiveNetworkHandler.obtainMessage(NetworkHandler.WHAT_SEND_NAIVE_REPORT,
location);
mNaiveNetworkHandler.sendMessage(message);
}
}

41. public class NaiveBroadcastReceiver extends LocationBaseBroadcast {
public void onReceive(Context context, Intent intent) {
Location location = intent.getExtras().getParcelable(LOCATION_KEY);
Message message =
mNaiveNetworkHandler.obtainMessage(NetworkHandler.WHAT_SEND_NAIVE_REPORT,
location);
mNaiveNetworkHandler.sendMessage(message);
}
}

42. public class NetworkHandler extends Handler {
@Override public void handleMessage(Message msg) {
switch (msg.what) {
case WHAT_SEND_NAIVE_REPORT:
Location location = (Location) msg.obj;
ServerReport serverReport = new ServerReport(location);
FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference myRef = database.getReference("NaiveReport");
myRef.push().setValue(serverReport);
Break;
}
}

43. public class NetworkHandler extends Handler {
@Override public void handleMessage(Message msg) {
switch (msg.what) {
case WHAT_SEND_NAIVE_REPORT:
Location location = (Location) msg.obj;
ServerReport serverReport = new ServerReport(location);
FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference myRef = database.getReference("NaiveReport");
myRef.push().setValue(serverReport);
Break;
}
}

44. public class NetworkHandler extends Handler {
@Override public void handleMessage(Message msg) {
switch (msg.what) {
case WHAT_SEND_NAIVE_REPORT:
Location location = (Location) msg.obj;
ServerReport serverReport = new ServerReport(location);
FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference myRef = database.getReference("NaiveReport");
myRef.push().setValue(serverReport);
Break;
}
}

45. public class NetworkHandler extends Handler {
@Override public void handleMessage(Message msg) {
switch (msg.what) {
case WHAT_SEND_NAIVE_REPORT:
Location location = (Location) msg.obj;
ServerReport serverReport = new ServerReport(location);
FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference myRef = database.getReference("NaiveReport");
myRef.push().setValue(serverReport);
Break;
}
}

46. GPS Points
192
locations

50. WakeLock

51. startService();

52. <receiver android:name=".MyBroadcastReceiver"
android:permission="android.permission.SEND_SMS">
<intent-filter>
<action android:name="android.intent.action.AIRPLANE_MODE"/>
</intent-filter>
</receiver>

53. Few times in an hour

54. Aug 2018:
targetSDKVersion >= 26

55. JobScheduler for the rescue

56. Main
Activity
SmartService
Service
HandlerThread
Looper
Location
Handler
Network
Handler
Broadcast
Receiver
Location
Tracker
Every 5 min
JobScheduler

57. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

58. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

59. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

60. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

61. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

62. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

63. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

64. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

65. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

66. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

67. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

68. public class SmartService extends JobService {
public static final String LOCATION_SMART_JOB = "LOCATION_SMART_JOB";

69. public class SmartService extends JobService {
public boolean onStartJob(JobParameters jobParameters) {
LocalBroadcastManager.getInstance(this).registerReceiver(receiver,
new IntentFilter(LocationBaseBroadcast.ACTION_NEW_LOCATION_ARRIVED));
locationTracker.start();
return true;
}
public boolean onStopJob(JobParameters jobParameters) {
locationTracker.stop();
return true;
}

70. public class SmartService extends JobService {
public boolean onStartJob(JobParameters jobParameters) {
LocalBroadcastManager.getInstance(this).registerReceiver(receiver,
new IntentFilter(LocationBaseBroadcast.ACTION_NEW_LOCATION_ARRIVED));
locationTracker.start();
return true;
}
public boolean onStopJob(JobParameters jobParameters) {
locationTracker.stop();
return true;
}

71. public class SmartService extends JobService {
public boolean onStartJob(JobParameters jobParameters) {
LocalBroadcastManager.getInstance(this).registerReceiver(receiver,
new IntentFilter(LocationBaseBroadcast.ACTION_NEW_LOCATION_ARRIVED));
locationTracker.start();
return true;
}
public boolean onStopJob(JobParameters jobParameters) {
locationTracker.stop();
return true;
}

72. public class SmartService extends JobService {
public boolean onStartJob(JobParameters jobParameters) {
LocalBroadcastManager.getInstance(this).registerReceiver(receiver,
new IntentFilter(LocationBaseBroadcast.ACTION_NEW_LOCATION_ARRIVED));
locationTracker.start();
return true;
}
public boolean onStopJob(JobParameters jobParameters) {
locationTracker.stop();
return true;
}

73. public class SmartService extends JobService {
public boolean onStartJob(JobParameters jobParameters) {
LocalBroadcastManager.getInstance(this).registerReceiver(receiver,
new IntentFilter(LocationBaseBroadcast.ACTION_NEW_LOCATION_ARRIVED));
locationTracker.start();
return true;
}
public boolean onStopJob(JobParameters jobParameters) {
locationTracker.stop();
return true;
}

74. public class SmartService extends JobService {
public boolean onStartJob(JobParameters jobParameters) {
LocalBroadcastManager.getInstance(this).registerReceiver(receiver,
new IntentFilter(LocationBaseBroadcast.ACTION_NEW_LOCATION_ARRIVED));
locationTracker.start();
return true;
}
public boolean onStopJob(JobParameters jobParameters) {
locationTracker.stop();
return true;
}

75. 39
locations

77. Same

78. Is it so good? :)

80. public class MainActivity extends AppCompatActivity {
@Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
startService(new Intent(this, MyService.class));
startService(new Intent(this, MyIntentService.class));
}

81. public class MyService extends Service {
@Override public int onStartCommand(Intent intent, int flags, int startId) {
PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
final PowerManager.WakeLock wakeLock =
powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MyWakelockTag");
//...
}

82. public class MyService extends Service {
@Override public int onStartCommand(Intent intent, int flags, int startId) {
PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
final PowerManager.WakeLock wakeLock =
powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MyWakelockTag");
//...
}

83. public class MyService extends Service {
@Override public int onStartCommand(Intent intent, int flags, int startId) {
PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
final PowerManager.WakeLock wakeLock =
powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MyWakelockTag");
//...
}

84. public class MyService extends Service {
Thread thread = new Thread(new Runnable() {
@Override public void run() {
wakeLock.acquire();
while(true){
try {
Thread.sleep(1000L);
} catch (InterruptedException e) { e.printStackTrace(); }
}
}
});

85. public class MyService extends Service {
Thread thread = new Thread(new Runnable() {
@Override public void run() {
wakeLock.acquire();
while(true){
try {
Thread.sleep(1000L);
} catch (InterruptedException e) { e.printStackTrace(); }
}
}
});

86. public class MyService extends Service {
Thread thread = new Thread(new Runnable() {
@Override public void run() {
wakeLock.acquire();
while(true){
try {
Thread.sleep(1000L);
} catch (InterruptedException e) { e.printStackTrace(); }
}
}
});

87. public class MyService extends Service {
//...
thread.start();
return super.onStartCommand(intent, flags, startId);
}

88. Will it blend?
1. After a some time service will die, wakelock will be released,
thread will be parked
2. Service will die, wakelock will be never released, thread will run
till process will be killed
3. Service will continue to run till it stopped
4. Service will die, system will release wakelock and after some time
thread will be parked

89. Will it blend?
1. After a some time service will die, wakelock will be released,
thread will be parked
2. Service will die, wakelock will be never released, thread will run
till process will be killed
3. Service will continue to run till it stopped
4. Service will die, system will release wakelock and after some time
thread will be parked

90. Will it blend?
1. After a some time service will die, wakelock will be released,
thread will be parked
2. Service will die, wakelock will be never released, thread will run
till process will be killed
3. Service will continue to run endless
4. Service will die, system will release wakelock and after some time
thread will be parked

91. Will it blend?
1. After a some time service will die, wakelock will be released,
thread will be parked
2. Service will die, wakelock will be never released, thread will run
till process will be killed
3. Service will continue to run endless
4. After a some time service will die, wakelock will be released,
thread will be terminated

92. Will it blend?
1. After a some time service will die, wakelock will be released,
thread will be parked
2. Service will die, wakelock will be never released, thread will run
till process will be killed
3. Service will continue to run endless
4. After a some time service will die, wakelock will be released,
thread will be terminated

93. ACTIVITY MANAGER RUNNING PROCESSES (dumpsys activity processes)
All known processes:
*APP* UID 10084 ProcessRecord{f5cc46d 3558:academy.android.diveinback/u0a84}
user #0 uid=10084 gids={50084, 20084, 9997}
requiredAbi=x86 instructionSet=null
class=academy.android.diveinback.MyApp
dir=/data/app/academy.android.diveinback-ks7V4YegT65dnRcooFAcwA==/base.apk
publicDir=/data/app/academy.android.diveinback-ks7V4YegT65dnRcooFAcwA==/base.apk
data=/data/user/0/academy.android.diveinback
packageList={academy.android.diveinback}
compat={420dpi}
thread=android.app.IApplicationThread$Stub$Proxy@7a708a2
pid=3558 starting=false
lastActivityTime=-12m28s333ms lastPssTime=-10m48s392ms nextPssTime=+19m11s582ms
adjSeq=9790 lruSeq=0 lastPss=41MB lastSwapPss=0.00 lastCachedPss=41MB lastCachedSwapPss=0.00
cached=true empty=true
oom: max=1001 curRaw=906 setRaw=906 cur=906 set=906
curSchedGroup=0 setSchedGroup=0 systemNoUi=false trimMemoryLevel=0
curProcState=17 repProcState=17 pssProcState=17 setProcState=17 lastStateTime=-11m28s398ms
hasShownUi=true pendingUiClean=false hasAboveClient=false treatLikeActivity=false
lastWakeTime=3029 timeUsed=+1m0s7ms
lastCpuTime=0 timeUsed=0
lastRequestedGc=-12m31s686ms lastLowMemory=-12m31s686ms reportLowMemory=false

94. Tips/Tricks JobScheduler

95. Maintain the progress

96. Backward compatibility.
Should I use JobScheduler only?
Should I have Service & jobscheduler

97. JobIntentService
Context.startService()
< >=
JobScheduler.enqueue()

98. JobIntentService
onStartJob(JobParams)
JobService
onHandleWork(Intent intent);
onStopJob(JobParams ) onStopCurrentWork()

99. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

100. public class MainActivity
Job myJob = firebaseJobDispatcher.newJobBuilder()
.setService(SmartService.class)
.setTag(SmartService.LOCATION_SMART_JOB)
.setRecurring(true)
.setLifetime(FOREVER)
.setTrigger(Trigger.executionWindow(0, 60 * 5))
.setReplaceCurrent(false)
.setConstraints(ON_ANY_NETWORK)
.build();
firebaseJobDispatcher.mustSchedule(myJob);

101. Avoid JobId collision

102. Jobs Not Rescheduled after Reboot
https://github.com/firebase/firebase-jobdispatcher-android/issues/101

103. Last thing...

104. How the phone with no battery left looks?

106. Yonatan V.Levin levin.yonatan
parahallGoogle Developer Expert