I have created an Application, which range beacons and calculates the position when more than three beacons are ranged.
The Problem is, that when I want to show the position, it's necessary to start a new Intent, so the main activity is not still in Foreground. After approximately 5 seconds the ranging of the beacons stops, and my position calculating also because the distances of the beacons doesn't change any more.
Is there any possibility to continue ranging beacons? I've tried to start an async task in my main activity, but it doesn't work, maybe there is a mistake, i don't know.
Here is my Code of the async task and the OnBeaconServiceConnect():
public class Monitor_Screen extends Activity implements BeaconConsumer,
SensorEventListener {
private class asyncThread extends AsyncTask<Activity, Void, BeaconManager> {
#Override
protected BeaconManager doInBackground(Activity... arg0) {
// TODO Auto-generated method stub
Thread.currentThread().setName("BeaconManagerThread");
Application myApplication = new Application();
// BeaconManager
myBeaconManager = BeaconManager.getInstanceForApplication(myApplication);
myBeaconManager
.getBeaconParsers()
.add(new BeaconParser()
.setBeaconLayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24"));
myBeaconManager.setBackgroundScanPeriod(TimeUnit.SECONDS.toMillis(1));
myBeaconManager.bind(Monitor_Screen.this);
// Region
myRegion = new Region("all beacons", null, null, null);
startService(Monitor_Screen.this.getIntent());
return myBeaconManager;
}
}
#Override
public void onBeaconServiceConnect() {
// // range beacons on connect
try {
myBeaconManager.startRangingBeaconsInRegion(myRegion);
} catch (RemoteException e) {
Toast.makeText(getApplicationContext(), e.getMessage(),
Toast.LENGTH_LONG).show();
}
myBeaconManager.setRangeNotifier(new RangeNotifier() {
public void didRangeBeaconsInRegion(Collection<Beacon> beacons,
Region myRegion) {
if (beacons.size() > 0) {
Iterator<Beacon> myIterator = beacons.iterator();
while (myIterator.hasNext()) {
Beacon tempBeacon = myIterator.next();
MyBeacon myBeacon = new MyBeacon(tempBeacon.getId1(),
tempBeacon.getId2(), tempBeacon.getId3(),
tempBeacon.getBluetoothAddress(), tempBeacon
.getRssi(), tempBeacon.getDistance(),
tempBeacon.getTxPower(), System
.currentTimeMillis(),
new Position(0, 0));
boolean isIn = false;
for (MyBeacon blub : myVector) {
if (blub.getBTAdress().equals(
myBeacon.getBTAdress())) {
isIn = true;
blub.distance = myBeacon.getDistance();
}
}
if (!isIn)
myVector.add(myBeacon);
}
}
logBeaconData();
for (int i = 0; i < myVector.size(); i++) {
if (System.currentTimeMillis()
- myVector.get(i).getTimeStamp() > 10000) {
myVector.remove(i);
}
}
}
});
try {
myBeaconManager.startMonitoringBeaconsInRegion(myRegion);
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
myBeaconManager.setMonitorNotifier(new MonitorNotifier() {
#Override
public void didExitRegion(Region arg0) {
// TODO Auto-generated method stub
}
#Override
public void didEnterRegion(Region arg0) {
// TODO Auto-generated method stub
}
#Override
public void didDetermineStateForRegion(int arg0, Region arg1) {
// TODO Auto-generated method stub
}
});
}
The easiest way to have beacon ranging continue in the background is to set up beacon ranging in a custom android.app.Application class, and have it forward the callbacks to your Activity to update the display only if that Activity is in the foreground.
You can see an example of doing this in the reference application for the Android Beacon Library here: https://github.com/AltBeacon/android-beacon-library-reference
Below is an excerpt from the custom android.app.Application class where this is set up. Note that ranging is set up once, and will continue for the whole lifecycle of the application. The ranging callback is passed to the mRangingActivity if it exists, so it can do any UI processing necessary.
public class BeaconReferenceApplication extends Application implements BootstrapNotifier, RangeNotifier {
...
public void onCreate() {
mAllBeaconsRegion = new Region("all beacons", null, null, null);
mBeaconManager = BeaconManager.getInstanceForApplication(this);
mBackgroundPowerSaver = new BackgroundPowerSaver(this);
mRegionBootstrap = new RegionBootstrap(this, mAllBeaconsRegion);
}
#Override
public void didRangeBeaconsInRegion(Collection<Beacon> arg0, Region arg1) {
if (mRangingActivity != null) {
mRangingActivity.didRangeBeaconsInRegion(arg0, arg1);
}
}
#Override
public void didEnterRegion(Region arg0) {
try {
Log.d(TAG, "entered region. starting ranging");
mBeaconManager.startRangingBeaconsInRegion(mAllBeaconsRegion);
mBeaconManager.setRangeNotifier(this);
} catch (RemoteException e) {
Log.e(TAG, "Cannot start ranging");
}
}
...
}
Related
As before, I work with Android Beacon Library,
It already worked and I can found out beacon via BLE - Bluetooth low energy,
But now, after updated to latest version of library, now method onBeaconServiceConnect() not run anymore.
Please tell me what I need to do to make it works,
Thank you,
p/s : Code :
Manifest.xml
<uses-feature
android:name="android.hardware.bluetooth_le"
android:required="true" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.INTERNET" />
<service
android:name="org.altbeacon.beacon.service.BeaconService"
android:enabled="true"
android:isolatedProcess="false"
android:label="beacon" />
<service
android:name="org.altbeacon.beacon.BeaconIntentProcessor"
android:enabled="true" />
Java
public class FoundBeaconFragment extends Fragment
implements BeaconConsumer {
#Override
public boolean bindService(Intent intent, ServiceConnection serviceConnection, int i) {
return false;
}
#Override
public Context getApplicationContext() {
return getActivity();
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_found_beacon, null);
// Set adapter
foundBeaconAdapter = new FoundBeaconAdapter(
getActivity(),
R.layout.simple_list_item_found_beacon,
mAlFoundBeacon);
mLvFoundBeacon.setAdapter(foundBeaconAdapter);
// Register Scan beacons feature
register();
return v;
}
#Override
public void onDestroy() {
super.onDestroy();
try {
// Unbind scan beacon progress
if (beaconManager != null)
beaconManager.unbind(this);
} catch (Exception e) {
e.printStackTrace();
}
}
#Override
public void unbindService(ServiceConnection serviceConnection) {
}
// CUSTOM METHODS
private void register() {
beaconManager = BeaconManager.getInstanceForApplication(getActivity());
// To detect proprietary beacons, you must add a line like below corresponding to your beacon
// type. Do a web search for "setBeaconLayout" to get the proper expression.
try {
// todo
beaconManager.getBeaconParsers().add(new BeaconParser().
setBeaconLayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24"));
} catch (Exception e) {
e.printStackTrace();
}
// CAN SEE THIS LOG CAT, NO EXCEPTION
Log.i("", "Register Service");
beaconManager.bind(this);
}
#Override
public void onBeaconServiceConnect() {
beaconManager.setRangeNotifier(new RangeNotifier() {
#Override
public void didRangeBeaconsInRegion(
Collection<org.altbeacon.beacon.Beacon> beacons, Region region) {
Log.i("", "IS_SCAN_BEACON " + FoundBeaconFragment.IS_SCAN_BEACON);
if (FoundBeaconFragment.IS_SCAN_BEACON) {
Log.i("", "Found " + beacons.size() + " beacon!");
if (beacons.size() > 0) {
/**
* Begin transfer data
*/
for (final org.altbeacon.beacon.Beacon beacon : beacons) {
getActivity().runOnUiThread(new Runnable() {
#Override
public void run() {
getDataViaBLE(getActivity(), beacon.getId1() + "",
beacon.getId2() + "", beacon.getId3() + "");
}
});
}
}
}
}
});
try {
beaconManager.startRangingBeaconsInRegion(
new Region(Constant.UUID, null, null, null));
} catch (RemoteException e) {
e.printStackTrace();
}
}
public static String UUID = "01122334-4556-6778-899a-abbccddeeff0";
ANSWER
Since I used Fragment not Activity as sample codes from the library.
So I need do these changes :
#Override
public Context getApplicationContext() {
return getActivity().getApplicationContext();
}
#Override
public void unbindService(ServiceConnection serviceConnection) {
getActivity().unbindService(serviceConnection);
}
#Override
public boolean bindService(Intent intent, ServiceConnection serviceConnection, int i) {
return getActivity().bindService(intent, serviceConnection, i);
}
If you are implementing the BeaconConsumer interface in a Fragment (and not an Activity, Service or Application instance), you need to chain all of the methods. Like this:
#Override
public Context getApplicationContext() {
return getActivity().getApplicationContext();
}
#Override
public void unbindService(ServiceConnection serviceConnection) {
getActivity().unbindService(serviceConnection);
}
#Override
public boolean bindService(Intent intent, ServiceConnection serviceConnection, int i) {
return getActivity().bindService(intent, serviceConnection, i);
}
I am not sure.before few days ,this beacon code is working for me.please check.if any issue ,i will send whole my code.
try this one:
beaconManager.startRangingBeaconsInRegion(new Region("myBeaons", Identifier.parse(UUID), null, null));
instead of this line in your code.
beaconManager.startRangingBeaconsInRegion(
new Region(Constant.UUID, null, null, null));
this Code is working for me.please try this code:
Create Application Class:
public class BeaconReferenceApplication extends Application implements BootstrapNotifier {
private BackgroundPowerSaver backgroundPowerSaver;
private boolean haveDetectedBeaconsSinceBoot = false;
private MonitoringActivity monitoringActivity = null;
private String UUID = "23542266-18D1-4FE4-B4A1-23F8195B9D39";
private static final String TAG = ".MyApplicationName";
private RegionBootstrap regionBootstrap;
#Override
public void onCreate() {
super.onCreate();
Log.d(TAG, "App started up");
BeaconManager beaconManager = BeaconManager.getInstanceForApplication(this);
// To detect proprietary beacons, you must add a line like below corresponding to your beacon
// type. Do a web search for "setBeaconLayout" to get the proper expression.
// beaconManager.getBeaconParsers().add(new BeaconParser().
// setBeaconLayout("m:2-3=beac,i:4-19,i:20-21,i:22-23,p:24-24,d:25-25"));
// wake up the app when any beacon is seen (you can specify specific id filers in the parameters below)
Region region = new Region("com.example.myapp.boostrapRegion", null, null, null);
regionBootstrap = new RegionBootstrap(this, region);
}
#Override
public void didDetermineStateForRegion(int arg0, Region arg1) {
// Don't care
}
#Override
public void didEnterRegion(Region arg0) {
Log.d(TAG, "Got a didEnterRegion call");
// This call to disable will make it so the activity below only gets launched the first time a beacon is seen (until the next time the app is launched)
// if you want the Activity to launch every single time beacons come into view, remove this call.
regionBootstrap.disable();
Intent intent = new Intent(this, MainActivity.class);
// IMPORTANT: in the AndroidManifest.xml definition of this activity, you must set android:launchMode="singleInstance" or you will get two instances
// created when a user launches the activity manually and it gets launched from here.
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
this.startActivity(intent);
}
#Override
public void didExitRegion(Region arg0) {
// Don't care
}
}
Activity Class
public class MainActivity extends Activity implements BeaconConsumer {
public static final String TAG = "BeaconsEverywhere";
private BeaconManager beaconManager;
private String UUID = "23542266-18D1-4FE4-B4A1-23F8195B9D39";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
beaconManager = BeaconManager.getInstanceForApplication(this);
beaconManager.getBeaconParsers().add(new BeaconParser()
.setBeaconLayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24,d:25-25"));
beaconManager.bind(this);
}
#Override
protected void onDestroy() {
super.onDestroy();
beaconManager.unbind(this);
}
#Override
public void onBeaconServiceConnect() {
final Region region = new Region("myBeaons", Identifier.parse(UUID), null, null);
beaconManager.setMonitorNotifier(new MonitorNotifier() {
#Override
public void didEnterRegion(Region region) {
try {
Log.d(TAG, "didEnterRegion");
beaconManager.startRangingBeaconsInRegion(region);
} catch (RemoteException e) {
e.printStackTrace();
}
}
#Override
public void didExitRegion(Region region) {
try {
Log.d(TAG, "didExitRegion");
beaconManager.stopRangingBeaconsInRegion(region);
} catch (RemoteException e) {
e.printStackTrace();
}
}
#Override
public void didDetermineStateForRegion(int i, Region region) {
}
});
beaconManager.setRangeNotifier(new RangeNotifier() {
#Override
public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) {
for (Beacon oneBeacon : beacons) {
Log.d(TAG, "distance: " + oneBeacon.getDistance() + " id:" + oneBeacon.getId1() + "/" + oneBeacon.getId2() + "/" + oneBeacon.getId3());
}
}
});
try {
beaconManager.startMonitoringBeaconsInRegion(region);
} catch (RemoteException e) {
e.printStackTrace();
}
}
}
I know there are quite a few posts about this already and I have read pretty much all of them (or so it feels at least). Yet my service refuses to work, at all.
In short: I have a widget that should launch the speecrecognizer service when clicked on. The service should then listen to input and (for now) print it out to logcat.
The service starts correctly (the logs in oncreate and ondestroy are printed) but the actual voice recognition part doesn't work.
I have added the service in the android manifest and added the "android.permission.RECORD_AUDIO" permission.
Part of the issue is that
SpeechRecognizer.isRecognitionAvailable(this)
returns false.
Here's the important bit of code from the service:
#Override
public void onCreate() {
super.onCreate();
mSpeechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
mSpeechRecognizer.setRecognitionListener(mListener);
if (SpeechRecognizer.isRecognitionAvailable(this))
Log.d(TAG, "we are go for speech recognition");
else
Log.d(TAG, "red light for speech recognition :c");
}
#Override
public void onDestroy() {
super.onDestroy();
Log.d(TAG, "i'm being destroyed :c");
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d(TAG, "we made it");
playTtsForMessage("We made it", true);
speechIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
speechIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
speechIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, this.getPackageName());
mSpeechRecognizer.startListening(speechIntent);
Log.d(TAG, "started listening");
return super.onStartCommand(intent, flags, startId);
}
private void broadcastStopIntent() {
Intent intent = new Intent(Intents.ACTION_VOICE_COMMANDS_STOP);
AddApplication.getInstance().sendBroadcast(intent, null);
}
All the log outputs get printed, apart from the ones i've placed inside the listener.
If interested, here's the listener:
private RecognitionListener mListener = new RecognitionListener() {
#Override
public void onReadyForSpeech(Bundle params) {
// TODO Auto-generated method stub
}
#Override
public void onBeginningOfSpeech() {
// TODO Auto-generated method stub
Log.d(TAG, "speech started");
}
#Override
public void onRmsChanged(float rmsdB) {
// TODO Auto-generated method stub
}
#Override
public void onBufferReceived(byte[] buffer) {
// TODO Auto-generated method stub
}
#Override
public void onEndOfSpeech() {
// TODO Auto-generated method stub
Log.d(TAG, "speech ended");
broadcastStopIntent();
}
#Override
public void onError(int error) {
// TODO Auto-generated method stub
}
#Override
public void onResults(Bundle results) {
// TODO Auto-generated method stub
ArrayList<String> spoken = results
.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
String msg = "";
for (String s : spoken) {
msg += s + " ";
}
Log.d(TAG, "what i understood from that was: " + msg);
WidgetVoiceCommandProviderIntentService.this.stopSelf();
}
#Override
public void onPartialResults(Bundle partialResults) {
// TODO Auto-generated method stub
}
#Override
public void onEvent(int eventType, Bundle params) {
// TODO Auto-generated method stub
}
};
I tried this guy's workaround: Android Speech Recognition as a service on Android 4.1 & 4.2
Which yielded no results. Any suggestions?
I was wondering, how can I keep the device listening for voice commands with voice recognition while the device is asleep? The idea I have is that I would like the device to respond to my voice, even if I have the screen locked or the screen has timed out.
Is this possible? I have tried using this as a service and an interface and it stops listening once the screen locks. Can I receive any help with this? This is my class.
public class VoiceEngineService extends Activity {
private boolean isSpeakingDone = false; // default setting
private SpeechRecognizer sr = SpeechRecognizer.createSpeechRecognizer(this);
private AudioManager mAudioManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.wait_for_speech);
// mute beep sound
mAudioManager.setStreamSolo(AudioManager.STREAM_VOICE_CALL, true);
sr.setRecognitionListener(new listener());
Intent i = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
i.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM); // LANGUAGE_MODEL_WEB_SEARCH
i.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, getApplication()
.getClass().getName());
i.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 6);
i.putExtra(RecognizerIntent.EXTRA_PROMPT, "");
i.putExtra(RecognizerIntent.EXTRA_SPEECH_INPUT_MINIMUM_LENGTH_MILLIS, 5500);
sr.startListening(i);
}
class listener implements RecognitionListener {
#Override
public void onReadyForSpeech(Bundle params) {
// TODO Auto-generated method stub
}
#Override
public void onBeginningOfSpeech() {
// TODO Auto-generated method stub
}
#Override
public void onRmsChanged(float rmsdB) {
// TODO Auto-generated method stub
}
#Override
public void onBufferReceived(byte[] buffer) {
// TODO Auto-generated method stub
}
#Override
public void onEndOfSpeech() {
// TODO Auto-generated method stub
}
#Override
public void onError(int error) {
// TODO Auto-generated method stub
if (SharedPref.getVoiceController() == false) {
sr.cancel();
Intent i = new Intent();
sr.startListening(i);
} else {
sr.stopListening();
sr.destroy();
finish();
}
}
#Override
public void onResults(Bundle results) {
// TODO Auto-generated method stub
isSpeakingDone = true;
ArrayList<String> mDataList = results
.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
Intent i = new Intent();
i.putStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS, mDataList);
setResult(RESULT_OK, i);
finish();
}
#Override
public void onPartialResults(Bundle partialResults) {
// TODO Auto-generated method stub
}
#Override
public void onEvent(int eventType, Bundle params) {
// TODO Auto-generated method stub
}
} // end listener class
#Override
protected void onPause() {
if ((isSpeakingDone == false)) {
finish();
}
super.onPause();
}
#Override
protected void onStop() {
// when speaking is true finish() has already been called
if (isSpeakingDone == false) {
finish();
}
super.onStop();
}
#Override
protected void onDestroy() {
sr.stopListening();
sr.destroy();
super.onDestroy();
}
}
You have to implement your voice listener in a service. Create a class that extends 'Service' and make up some logic to take care of recording.
If you tried already the service, then it might be that you tried to redirect commands to an activity which most likely has been stopped by Android OS. Generally when talking about doing stuff when phone is in lock mode, you only can hope to accomplish tasks in one or more services coupled togethe.
When you are in Activity, of course wen the activity goes out of scope it will be shut down by Android OS. but services can still run in background unless shut dow mm explicitly by your own code or in rare cases that Android will recognize that it needs memory and processor power for other tasks.
I'm developing a tracking app. and i have problem with GPS module. The app must record a route. App work fine, but sometimes when the device is not moving, GPS still receive
continuous coordinate that don't indicate my position, error is within a radius of 20 meter, and when I'm moving again work fine.
Please give me some tips that can help me to fix this problem. Thanks a lot.
I have 3 calsses
1 - GPSReceiver here is method for get location
public void getMyLoction(){
_locationManager = (LocationManager) _context.getSystemService(LOCATION_SERVICE);
_isGPSEnabled =_locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
if (_isGPSEnabled) {
if (_location == null) {
_locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0, this);
if (_locationManager != null) {
_location = _locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
setLocation(_location);
}
}
}
}
2 RecordingActivity (take coordonates form services and processes then) work fine, a comment in method what they do.
public class RecordingActivity extends FragmentActivity {
public final static String BROADCAST_ACTION = "map.trackv";
public BroadcastReceiver receiver;
private GoogleMap map;
private TextView _messageToUser;
private Coordinate _pointFromService;
private long _timeWhenStartButtonWasPressed;
private List<Coordinate> _unprocessedCoords;
private List<Coordinate> _processedCoords;
private Button _stopButton;
private Button _startButton;
private String _startRecordingDate;
private String _stopRecordingDate;
private GPSReceiver _gps;
private DataBaseOperations _dataSource;
private boolean _recording;
private boolean _gpsStatus;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_recording_route);
initActvity();
checkIfGPSisOn();
try {
Runtime.getRuntime().exec("logcat -f" + " /sdcard/Logcat.txt");
} catch (IOException e) {
// TODO Auto-generated catch block
Log.d("nu pot", "DDDDD");
e.printStackTrace();
}
receveirWork();
IntentFilter intentFilt = new IntentFilter(BROADCAST_ACTION);
registerReceiver(receiver, intentFilt);
}
public void checkIfGPSisOn() {
//check on start
}
public void receveirWork() {
receiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
// request points and process then,
}
};
}
#Override
protected void onDestroy() {
super.onDestroy();
if (_stopButton.isEnabled())
{
stopService(new Intent(this, RecordingService.class));
_unprocessedCoords = null;
_processedCoords = null;
}
unregisterReceiver(receiver);
}
#Override
protected void onResume() {
if (!_stopButton.isEnabled()) {
_startButton.setEnabled(true);
_messageToUser.setText(Constants.PRESS_START_BUTTON);
map.clear();
}
super.onResume();
}
// actiune buton start;
public void startButtonEvent(View V) {
buttonsStateAndMessageToShow(false, true, Constants.MESSAGE_TO_WAIT);
_timeWhenStartButtonWasPressed = System.currentTimeMillis();
startService(new Intent(this, RecordingService.class));
// start service to get position
}
public void stopButtonEvent(View V) {
stopService(new Intent(this, RecordingService.class));
// stop service
// save route in BD
// resetData;
}
public void initActvity() {
// init date
}
#Override
protected void onSaveInstanceState(Bundle outState) {
// save state
}
}
3 RecordingServices class, ii think here is the problem.
public class RecordingService extends Service {
private Thread _backgroundWork;
private boolean _threadCanRun;
private GPSReceiver _gps;
private Coordinate _pointToSent;
public void onCreate() {
super.onCreate();
_threadCanRun = true;
_backgroundWork = new Thread(new Runnable() {
#Override
public void run() {
Looper.prepare();
getLocationFromGPS();
Looper.loop();
}
});
}
public int onStartCommand(Intent intent, int flags, int startId) {//
_backgroundWork.start();
return super.onStartCommand(intent, flags, startId);
}
public void onDestroy() {
_threadCanRun = false;
super.onDestroy();
}
public IBinder onBind(Intent intent) {
return null;
}
public void getLocationFromGPS() {
while (_threadCanRun) {
Intent _intent = new Intent(RecordingActivity.BROADCAST_ACTION);
_gps = new GPSReceiver(this);
_gps.getMyLoction();
if (_gps.getIsGPSEnabled()) {
try {
TimeUnit.SECONDS.sleep(2);
} catch (InterruptedException e) {}
sentPoint(_intent);
} else {
try {
TimeUnit.MILLISECONDS.sleep(500);
} catch (InterruptedException e) {}
_intent.putExtra("latitude", 0);
_intent.putExtra("longitude", 0);
_intent.putExtra("time", 0);
_intent.putExtra("GPSstatus", false);
sendBroadcast(_intent);
}
}
}
private void sentPoint(Intent _intent) {
_pointToSent = new Coordinate(_gps.getLatitude(), _gps.getLongitude(), _gps.getTime());
_intent.putExtra("latitude", _pointToSent.getLatitude());
_intent.putExtra("longitude", _pointToSent.getlongitude());
_intent.putExtra("time", _pointToSent.getTime());
_intent.putExtra("GPSstatus", _gps.getIsGPSEnabled());
sendBroadcast(_intent);
_pointToSent = null;
}
}
repeating the Location update request depends on how u implemented your tracking system
but in general(which is not recommended , just change your request update rate to save client Battery usage) you can find the distance between your locations by location1.distanceTo(location2) so if the distance is smaller than 30m then put the new location away
In my project I am using binder mechanism to communicate to remote service. The remote service class will call JNI function and updates to UI for every 10 seconds. The JNI function has below code
static int n = 100;
return ++n;
This JNI function calling in Service class and updating to UI like below
public class MyService extends Service{
private static final String TAG = "MyService";
private final Handler serviceHandler = new Handler();
#Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
System.out.println("inside service onCreate");
Log.d(TAG, "entered onStart");
serviceHandler.removeCallbacks(sendUpdatesToUI);
serviceHandler.postDelayed(sendUpdatesToUI, 1000); // 1 second
}
1. private IMyService.Stub bioStub = new IMyService.Stub() {
2.
3. #Override
4. public int intFromJNI() throws RemoteException {
5. // TODO Auto-generated method stub
6. int libData = Abcd.intFromJNI();
7. System.out.println("inside ****** stub"+libData);
8. return libData;
}
};
#Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
System.out.println("inside binder ");
return bioStub;
}
private Runnable sendUpdatesToUI = new Runnable() {
public void run() {
Log.d(TAG, "entered Runnable");
try {
bioStub.intFromJNI();
serviceHandler.postDelayed(this, 10000);
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
}
This service class is calling in Activty
#Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
Intent serviceIntent=new Intent();
serviceIntent.setClass(context, MyService.class);
boolean ok=bindService(serviceIntent, mServiceConnection , Context.BIND_AUTO_CREATE);
Log.v("ok", String.valueOf(ok));
}
private ServiceConnection mServiceConnection=new ServiceConnection(){
#Override
public void onServiceConnected(ComponentName arg0, IBinder service) {
// TODO Auto-generated method stub
System.out.println("inside ServiceConnection");
myService = IMyService.Stub.asInterface(service);
try {
Log.d("Client", "entered mServiceConnection");
8. int jniValue = myService.intFromJNI();
9. System.out.println("value if JNI==>"+jniValue);
10.
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
#Override
public void onServiceDisconnected(ComponentName arg0) {
// TODO Auto-generated method stub
}
};
Here my problem is, The service class is not updating UI for every 10 seconds and the value is not incremeting in UI but the value is incrementing for every 10 seconds in service class i.e the print statement below is updating for every 10 seconds which is in line Number 7 in above code(Service).
System.out.println("inside ****** stub"+libData);
But I want to it update in UI also. i.e the statement line num 10.
System.out.println("value if JNI==>"+jniValue);
I`t is not happening in my code . How to solve this one .`
You are missing any way for the Service to tell the Activity about new events. The call from the Activity to the Service, intFromJNI, is a one-off function call which happens just once - it has no ongoing responsibility for telling the UI about changes in future.
You should add some listener class. For example, add IMyServiceListener.aidl with something like this:
package com.something;
interface IMyServiceListener {
void valueUpdated(int newValue);
}
And then in IMyService.aidl add this:
import com.something.IMyServiceListener;
void addListener(in IMyServiceListener newListener);
Then, within your IMyService.Stub class you will need to implement addListener - you should add the resulting object to some array of listeners, and call valueUpdated on each listener, each time the value changes.
Within the activity, you should call myService.addListener and pass in some object which receives notification of the changes. You can then display that on the UI within the activity.