Develop Reference

chronometer not running in service

I am trying to run chronometer inside a Service. But I am not able to run it. I press a button in Activity and that event is passed to the Service. If the button in pressed then start the Chronometer but problem is setOnChronometerTickListener is called only once and it stops. Where am I making mistake? Here is my Service and Activity class:
Service class:
public class TimerService extends Service {
NotificationManager notificationManager;
NotificationCompat.Builder mBuilder;
Callbacks activity;
private final IBinder mBinder = new LocalBinder();
private Chronometer chronometer;
SharedPreferences sharedPreferences;
private int state = 0; //0 means stop state,1 means play, 2 means pause
private boolean running = false;
private long pauseOffSet = -1;
#Subscribe(threadMode = ThreadMode.MAIN)
public void onMessageEvent(MessageEvent event) {
if (event.message) {
if (!running) {
if (pauseOffSet != -1) {
pauseOffSet = sharedPreferences.getLong("milli", -1);
}
chronometer.setBase(SystemClock.elapsedRealtime() - pauseOffSet);
chronometer.start();
state = 1;
pauseOffSet = 0;
running = true;
}
} else {
if (running) {
chronometer.stop();
pauseOffSet = SystemClock.elapsedRealtime() - chronometer.getBase();
state = 2;
running = false;
}
}
}
#Override
public void onCreate() {
super.onCreate();
EventBus.getDefault().register(this);
}
#Override
public void onDestroy() {
EventBus.getDefault().unregister(this);
super.onDestroy();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
sharedPreferences = getSharedPreferences("myprefs", MODE_PRIVATE);
chronometer = new Chronometer(this);
state = sharedPreferences.getInt("state", 0);
chronometer.setOnChronometerTickListener(new Chronometer.OnChronometerTickListener() {
#Override
public void onChronometerTick(Chronometer chronometer) {
Log.e("TimerService","timer");
pauseOffSet = SystemClock.elapsedRealtime() - chronometer.getBase();
if (pauseOffSet >= 79200000) {
chronometer.setBase(SystemClock.elapsedRealtime());
chronometer.stop();
running = false;
// progressBar.setProgress(0);
} else {
chronometer.setText(setFormat(pauseOffSet));
// int convertTime = (int) pauseOffSet;
// progressBar.setProgress(convertTime);
}
if (activity != null) {
activity.updateClient(pauseOffSet);
}
}
});
if (state == 1) { // its in play mode
running = true;
chronometer.setBase(SystemClock.elapsedRealtime() - sharedPreferences.getLong("milli", 0));
chronometer.start();
} else if (state == 2) { //its in pause mode
running = false;
pauseOffSet = sharedPreferences.getLong("milli", -1);
long time = SystemClock.elapsedRealtime() - pauseOffSet;
chronometer.setBase(time);
int convertTime = (int) pauseOffSet;
// progressBar.setProgress(convertTime);
} else {
running = false;
}
//Do what you need in onStartCommand when service has been started
return START_NOT_STICKY;
}
#Override
public IBinder onBind(Intent intent) {
return mBinder;
}
//returns the instance of the service
public class LocalBinder extends Binder {
public TimerService getServiceInstance() {
return TimerService.this;
}
}
//Here Activity register to the service as Callbacks client
public void registerClient(Activity activity) {
this.activity = (Callbacks) activity;
}
//callbacks interface for communication with service clients!
public interface Callbacks {
public void updateClient(long data);
}
String setFormat(long time) {
int h = (int) (time / 3600000);
int m = (int) (time - h * 3600000) / 60000;
int s = (int) (time - h * 3600000 - m * 60000) / 1000;
String hh = h < 10 ? "0" + h : h + "";
String mm = m < 10 ? "0" + m : m + "";
String ss = s < 10 ? "0" + s : s + "";
return hh + ":" + mm + ":" + ss;
}
}
This is my Activity class:
public class MainActivity extends AppCompatActivity implements View.OnClickListener, TimerService.Callbacks {
private static final String TAG = MainActivity.class.getSimpleName();
Chronometer tvTextView;
Button btnStart, btnStop;
private int state = 0; //0 means stop state,1 means play, 2 means pause
SharedPreferences sharedPreferences;
private boolean running = false;
private long pauseOffSet = -1;
ProgressBar progressBar;
Intent serviceIntent;
TimerService myService;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvTextView = findViewById(R.id.textview);
progressBar = findViewById(R.id.puzzleProgressBar);
btnStart = findViewById(R.id.button1);
btnStop = findViewById(R.id.button2);
btnStart.setOnClickListener(this);
btnStop.setOnClickListener(this);
serviceIntent = new Intent(this, TimerService.class);
sharedPreferences = getSharedPreferences("myprefs", MODE_PRIVATE);
state = sharedPreferences.getInt("state", 0);
tvTextView.setOnChronometerTickListener(new Chronometer.OnChronometerTickListener() {
#Override
public void onChronometerTick(Chronometer chronometer) {
long time = SystemClock.elapsedRealtime() - chronometer.getBase();
pauseOffSet = time;
Log.e(TAG, "pauseOffSet " + pauseOffSet);
if (time >= 79200000) {
tvTextView.setBase(SystemClock.elapsedRealtime());
tvTextView.stop();
running = false;
progressBar.setProgress(0);
} else {
chronometer.setText(setFormat(time));
int convertTime = (int) time;
progressBar.setProgress(convertTime);
}
}
});
startService(serviceIntent); //Starting the service
bindService(serviceIntent, serviceConnection, Context.BIND_AUTO_CREATE); //Binding to the service!
}
private ServiceConnection serviceConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
TimerService.LocalBinder binder = (TimerService.LocalBinder) service;
myService = binder.getServiceInstance();
myService.registerClient(MainActivity.this);
Log.e(TAG, "service connected");
}
#Override
public void onServiceDisconnected(ComponentName name) {
Log.e(TAG, "service disconnected");
}
};
public void onClick(View v) {
if (btnStart == v) {
EventBus.getDefault().post(new MessageEvent(true));
} else if (btnStop == v) {
EventBus.getDefault().post(new MessageEvent(false));
}
}
#Override
protected void onStop() {
super.onStop();
sharedPreferences.edit().putLong("milli", pauseOffSet).commit();
sharedPreferences.edit().putInt("state", state).commit();
}
String setFormat(long time) {
int h = (int) (time / 3600000);
int m = (int) (time - h * 3600000) / 60000;
int s = (int) (time - h * 3600000 - m * 60000) / 1000;
String hh = h < 10 ? "0" + h : h + "";
String mm = m < 10 ? "0" + m : m + "";
String ss = s < 10 ? "0" + s : s + "";
return hh + ":" + mm + ":" + ss;
}
#Override
public void updateClient(long data) {
Log.d(TAG, "Data from service" + data);
}
}

The Chronometer is a View, that is, a UI element. You never add your Chronometer to any layout, I guess that's why it's never updating.
You could try using a CountDownTimer or a Handler / Runnable combination.
http://developer.android.com/reference/android/os/CountDownTimer.html http://developer.android.com/reference/android/os/Handler.html
Here's an example using Handler / Runnable, I've even thrown in a stopTimer() method for good measure:
private Handler timerHandler;
private Runnable timerRunnable;
// ...
#Override
public void onCreate() {
super.onCreate();
Log.d(LOG_TAG, "TimerService created");
timerHandler = new Handler();
timerRunnable = new Runnable() {
#Override
public void run() {
Log.d(LOG_TAG, "TICK");
timerHandler.postDelayed(timerRunnable, 1000);
}
};
}
public void startTimer() {
Log.d(LOG_TAG, "Timer started");
timerHandler.post(timerRunnable);
}
public void stopTimer() {
Log.d(LOG_TAG, "Timer stopped");
timerHandler.removeCallbacks(timerRunnable);
}

Here is a video which do not use Handler and directly implement the chronometer ,
Do check it out...
https://youtu.be/RLnb4vVkftc
Plus I had this problem I solved by removing
android:format="00:00"
from Chronometer in activity_main.xml
So my code looks like this :
<Chronometer
android:id="#+id/chronometer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:height="20sp"
android:foregroundGravity="fill_horizontal|top|bottom|center|fill_vertical|fill"
android:maxLines="2"
android:minLines="2"
android:textColor="#FFF"
android:textSize="40sp"
android:verticalScrollbarPosition="defaultPosition"
app:layout_constraintBottom_toBottomOf="#+id/progress_breathing"
app:layout_constraintEnd_toEndOf="#+id/progress_breathing"
app:layout_constraintStart_toStartOf="#+id/progress_breathing"
app:layout_constraintTop_toTopOf="#+id/progress_breathing"
app:layout_constraintVertical_bias="0.43" />

My service shutsdown when acticty exits and unbinds to it, would like it to keep running

I'm trying to creat a bacckground service that will have a thread that adds one to a counter every minute.
I want other apps to be able to call a methed call getBot that will retunt the value.
Right now I have a test app that has a activty that bindss to the app so it can talk to it to get the counter. When it exits it unbounds to it.
It has a button called botGert that gets the current counter value from the service.
When it unbounds to it, the service shuts down. How can I get it so it does not shut down????
service class
public class MessengerService extends Service {
/** Command to the service to display a message */
static final int MSG_SAY_HELLO = 1;
static final int MSG_BOT_GET = 2;
static final int MSG_BOT_SET = 3;
static final int MSG_BOT_STOP = 4;
static final int MSG_BOT_PAUSE = 5;
static final int MSG_GET_ORDERS = 6;
static final int MSG_GET_POINT = 7;
static final int MSG_BOT_GET_RES = 2;
static final int PRICE_STATIC =1;
static final int PRICE_PERCENTAGE =2;
static final int PRICE_ALL = 3;
static final int VOL_STATIC = 1;
static final int VOL_PERCENTAGE = 2;
static final int VOL_ALL = 3;
int counter;
boolean isStop=false; // put bot in pause ste on next 1 min update
boolean isUYpdateNextMinute=false;
/**
This is called by a client to exicute code in this service
*/
class IncomingHandler extends Handler {
#Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_BOT_GET:
Message resp = Message.obtain(null, MSG_BOT_GET_RES);
Bundle bResp = new Bundle();
bResp.putString("respData", Integer.toString(counter ));
resp.setData(bResp);
try {
msg.replyTo.send(resp);
} catch (Exception e)
{
}
Toast.makeText(getApplicationContext(), "hello!", Toast.LENGTH_SHORT).show();
break;
default:
super.handleMessage(msg);
}
}
}
final Messenger mMessenger = new Messenger(new IncomingHandler());
/**
* When binding to the service, we return an interface to our messenger
* for sending messages to the service.
*/
#Override
public IBinder onBind(Intent intent) {
Toast.makeText(getApplicationContext(), "binding", Toast.LENGTH_SHORT).show();
return mMessenger.getBinder();
}
//////////////////////////////////////////////////////////////////////////////
// emplanent callbacks
MessengerService parent;
#Override
public void onCreate() {
Toast.makeText(this, "Service Created", Toast.LENGTH_LONG).show();
parent=this;
}
#Override
public void onStart(Intent intent, int startid) {
Toast.makeText(this, "Service Started", Toast.LENGTH_LONG).show();
ThreadDemo T1 = new ThreadDemo( "Thread-1");
T1.start();
// sgart 1 minute update thread
}
#Override
public void onDestroy() {
Toast.makeText(this, "Service Stopped", Toast.LENGTH_LONG).show();
}
///////////////////////////////////////////////////////////////
// thread code that runbs counter
class ThreadDemo extends Thread {
private String threadName;
ThreadDemo( String name) {
threadName = name;
System.out.println("Creating " + threadName );
}
public void run() {
try {
do {
counter++;
Thread.sleep(1000 *60 );
counter++;
} while (true);
} catch(Exception e)
{
Toast.makeText(parent, "thread stopped", Toast.LENGTH_LONG).show();
}
} // end inner thread class
} // end class
}
/////////////////////////////////////////////////////////////////////
activity class
public class ActivityBoundMessenger extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bound_messenger);
}
/** Messenger for communicating with the service. */
Messenger mService = null;
/** Flag indicating whether we have called bind on the service. */
boolean mBound;
/**
* Class for interacting with the main interface of the service.
*/
/////////////////////////////////////////////////////////////////////////////////////////
private ServiceConnection mConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder service) {
// This is called when the connection with the service has been
// established, giving us the object we can use to
// interact with the service. We are communicating with the
// service using a Messenger, so here we get a client-side
// representation of that from the raw IBinder object.
mService = new Messenger(service);
mBound = true;
}
public void onServiceDisconnected(ComponentName className) {
// This is called when the connection with the service has been
// unexpectedly disconnected -- that is, its process crashed.
mService = null;
mBound = false;
}
};
////////////////////////////////////////////////////////////////////////////////
public void sayHello(View v) {
if (!mBound) return;
// Create and send a message to the service, using a supported 'what' value
Message msg = Message.obtain(null, MessengerService.MSG_SAY_HELLO, 0, 0);
try {
mService.send(msg);
} catch (RemoteException e) {
e.printStackTrace();
}
}
public void butSet(View v) {
if (!mBound) return;
// Create and send a message to the service, using a supported 'what' value
Message msg = Message.obtain(null, MessengerService.MSG_BOT_SET, 0, 0);
Bundle b = new Bundle();
b.putString("data", "json object");
msg.setData(b);
try {
mService.send(msg);
} catch (RemoteException e) {
e.printStackTrace();
}
}
public void butGet(View v) {
if (!mBound) return;
// Create and send a message to the service, using a supported 'what' value
Message msg = Message
.obtain(null, MessengerService.MSG_BOT_GET);
msg.replyTo = new Messenger(new ResponseHandler());
// We pass the value
try {
mService.send(msg);
} catch (RemoteException e) {
e.printStackTrace();
}
}
////////////////////////////////////////////////////////////////////////////////////////
// these metheds get called whenb this acty starts and endsa
#Override
protected void onStart() {
super.onStart();
// Bind to the service
////////////////////////////////////////////
Intent ser = new Intent(this, MessengerService.class);
startService(ser);
bindService(ser, mConnection,
Context.BIND_AUTO_CREATE);
///////////////////////////////////////////
}
#Override
protected void onStop() {
super.onStop();
// Unbind from the service
if (mBound) {
unbindService(mConnection);
mBound = false;
}
}
// This class handles the Service response
int ted=0;
String nextUpdate=null;
class ResponseHandler extends Handler {
#Override
public void handleMessage(Message msg) {
int respCode = msg.what;
switch (respCode) {
case MessengerService.MSG_BOT_GET_RES:
String nextUpdate= msg.getData().getString("respData");
ted++;
}
}
}
}

From Android Documentation:
When the last client unbinds from the service, the system destroys the service, unless the service was also started by startService().
So, all you have to do is call this in your onCreate() method in the Service:
startService(new Intent(this, MessengerService.class))
Of course make sure to call stopSelf() when you are done with the service.

make service unkilled even when app clossed

I m working pedometer app and i have one service class which extends service class .
public class StepService extends Service {
private static final String TAG = "name.bagi.levente.pedometer.StepService";
private SharedPreferences mSettings;
private PedometerSettings mPedometerSettings;
private SharedPreferences mState;
private SharedPreferences.Editor mStateEditor;
private Utils mUtils;
private SensorManager mSensorManager;
private Sensor mSensor;
private StepDetector mStepDetector;
// private StepBuzzer mStepBuzzer; // used for debugging
private StepDisplayer mStepDisplayer;
private PaceNotifier mPaceNotifier;
private DistanceNotifier mDistanceNotifier;
private SpeedNotifier mSpeedNotifier;
private CaloriesNotifier mCaloriesNotifier;
private SpeakingTimer mSpeakingTimer;
private PowerManager.WakeLock wakeLock;
private NotificationManager mNM;
private int mSteps;
private int mPace;
private float mDistance;
private float mSpeed;
private float mCalories;
/**
* Class for clients to access. Because we know this service always
* runs in the same process as its clients, we don't need to deal with
* IPC.
*/
public class StepBinder extends Binder {
StepService getService() {
return StepService.this;
}
}
#Override
public void onCreate() {
// Log.i(TAG, "[SERVICE] onCreate");
super.onCreate();
mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
showNotification();
// Load settings
mSettings = PreferenceManager.getDefaultSharedPreferences(this);
mPedometerSettings = new PedometerSettings(mSettings);
mState = getSharedPreferences("state", 0);
mUtils = Utils.getInstance();
mUtils.setService(this);
mUtils.initTTS();
acquireWakeLock();
// Start detecting
mStepDetector = new StepDetector();
mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
registerDetector();
// Register our receiver for the ACTION_SCREEN_OFF action. This will make our receiver
// code be called whenever the phone enters standby mode.
IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
registerReceiver(mReceiver, filter);
mStepDisplayer = new StepDisplayer(mPedometerSettings, mUtils);
mStepDisplayer.setSteps(mSteps = mState.getInt("steps", 0));
mStepDisplayer.addListener(mStepListener);
mStepDetector.addStepListener(mStepDisplayer);
mPaceNotifier = new PaceNotifier(mPedometerSettings, mUtils);
mPaceNotifier.setPace(mPace = mState.getInt("pace", 0));
mPaceNotifier.addListener(mPaceListener);
mStepDetector.addStepListener(mPaceNotifier);
mDistanceNotifier = new DistanceNotifier(mDistanceListener, mPedometerSettings, mUtils);
mDistanceNotifier.setDistance(mDistance = mState.getFloat("distance", 0));
mStepDetector.addStepListener(mDistanceNotifier);
mSpeedNotifier = new SpeedNotifier(mSpeedListener, mPedometerSettings, mUtils);
mSpeedNotifier.setSpeed(mSpeed = mState.getFloat("speed", 0));
mPaceNotifier.addListener(mSpeedNotifier);
mCaloriesNotifier = new CaloriesNotifier(mCaloriesListener, mPedometerSettings, mUtils);
mCaloriesNotifier.setCalories(mCalories = mState.getFloat("calories", 0));
mStepDetector.addStepListener(mCaloriesNotifier);
mSpeakingTimer = new SpeakingTimer(mPedometerSettings, mUtils);
mSpeakingTimer.addListener(mStepDisplayer);
mSpeakingTimer.addListener(mPaceNotifier);
mSpeakingTimer.addListener(mDistanceNotifier);
mSpeakingTimer.addListener(mSpeedNotifier);
mSpeakingTimer.addListener(mCaloriesNotifier);
mStepDetector.addStepListener(mSpeakingTimer);
// Used when debugging:
// mStepBuzzer = new StepBuzzer(this);
// mStepDetector.addStepListener(mStepBuzzer);
// Start voice
reloadSettings();
// Tell the user we started.
Toast.makeText(this, getText(R.string.started), Toast.LENGTH_SHORT).show();
}
#Override
public void onStart(Intent intent, int startId) {
// Log.i(TAG, "[SERVICE] onStart");
super.onStart(intent, startId);
}
#Override
public void onDestroy() {
// Log.i(TAG, "[SERVICE] onDestroy");
mUtils.shutdownTTS();
// Unregister our receiver.
unregisterReceiver(mReceiver);
unregisterDetector();
mStateEditor = mState.edit();
mStateEditor.putInt("steps", mSteps);
mStateEditor.putInt("pace", mPace);
mStateEditor.putFloat("distance", mDistance);
mStateEditor.putFloat("speed", mSpeed);
mStateEditor.putFloat("calories", mCalories);
mStateEditor.commit();
mNM.cancel(R.string.app_name);
wakeLock.release();
super.onDestroy();
// Stop detecting
mSensorManager.unregisterListener(mStepDetector);
// Tell the user we stopped.
Toast.makeText(this, getText(R.string.stopped), Toast.LENGTH_SHORT).show();
}
private void registerDetector() {
mSensor = mSensorManager.getDefaultSensor(
Sensor.TYPE_ACCELEROMETER /*|
Sensor.TYPE_MAGNETIC_FIELD |
Sensor.TYPE_ORIENTATION*/);
mSensorManager.registerListener(mStepDetector,
mSensor,
SensorManager.SENSOR_DELAY_FASTEST);
}
private void unregisterDetector() {
mSensorManager.unregisterListener(mStepDetector);
}
#Override
public IBinder onBind(Intent intent) {
// Log.i(TAG, "[SERVICE] onBind");
return mBinder;
}
/**
* Receives messages from activity.
*/
private final IBinder mBinder = new StepBinder();
public interface ICallback {
public void stepsChanged(int value);
public void paceChanged(int value);
public void distanceChanged(float value);
public void speedChanged(float value);
public void caloriesChanged(float value);
}
private ICallback mCallback;
public void registerCallback(ICallback cb) {
mCallback = cb;
//mStepDisplayer.passValue();
//mPaceListener.passValue();
}
private int mDesiredPace;
private float mDesiredSpeed;
/**
* Called by activity to pass the desired pace value,
* whenever it is modified by the user.
* #param desiredPace
*/
public void setDesiredPace(int desiredPace) {
mDesiredPace = desiredPace;
if (mPaceNotifier != null) {
mPaceNotifier.setDesiredPace(mDesiredPace);
}
}
/**
* Called by activity to pass the desired speed value,
* whenever it is modified by the user.
* #param desiredSpeed
*/
public void setDesiredSpeed(float desiredSpeed) {
mDesiredSpeed = desiredSpeed;
if (mSpeedNotifier != null) {
mSpeedNotifier.setDesiredSpeed(mDesiredSpeed);
}
}
public void reloadSettings() {
mSettings = PreferenceManager.getDefaultSharedPreferences(this);
if (mStepDetector != null) {
mStepDetector.setSensitivity(
Float.valueOf(mSettings.getString("sensitivity", "10"))
);
}
if (mStepDisplayer != null) mStepDisplayer.reloadSettings();
if (mPaceNotifier != null) mPaceNotifier.reloadSettings();
if (mDistanceNotifier != null) mDistanceNotifier.reloadSettings();
if (mSpeedNotifier != null) mSpeedNotifier.reloadSettings();
if (mCaloriesNotifier != null) mCaloriesNotifier.reloadSettings();
if (mSpeakingTimer != null) mSpeakingTimer.reloadSettings();
}
public void resetValues() {
mStepDisplayer.setSteps(0);
mPaceNotifier.setPace(0);
mDistanceNotifier.setDistance(0);
mSpeedNotifier.setSpeed(0);
mCaloriesNotifier.setCalories(0);
}
/**
* Forwards pace values from PaceNotifier to the activity.
*/
private StepDisplayer.Listener mStepListener = new StepDisplayer.Listener() {
public void stepsChanged(int value) {
mSteps = value;
passValue();
}
public void passValue() {
if (mCallback != null) {
mCallback.stepsChanged(mSteps);
}
}
};
/**
* Forwards pace values from PaceNotifier to the activity.
*/
private PaceNotifier.Listener mPaceListener = new PaceNotifier.Listener() {
public void paceChanged(int value) {
mPace = value;
passValue();
}
public void passValue() {
if (mCallback != null) {
mCallback.paceChanged(mPace);
}
}
};
/**
* Forwards distance values from DistanceNotifier to the activity.
*/
private DistanceNotifier.Listener mDistanceListener = new DistanceNotifier.Listener() {
public void valueChanged(float value) {
mDistance = value;
passValue();
}
public void passValue() {
if (mCallback != null) {
mCallback.distanceChanged(mDistance);
}
}
};
/**
* Forwards speed values from SpeedNotifier to the activity.
*/
private SpeedNotifier.Listener mSpeedListener = new SpeedNotifier.Listener() {
public void valueChanged(float value) {
mSpeed = value;
passValue();
}
public void passValue() {
if (mCallback != null) {
mCallback.speedChanged(mSpeed);
}
}
};
/**
* Forwards calories values from CaloriesNotifier to the activity.
*/
private CaloriesNotifier.Listener mCaloriesListener = new CaloriesNotifier.Listener() {
public void valueChanged(float value) {
mCalories = value;
passValue();
}
public void passValue() {
if (mCallback != null) {
mCallback.caloriesChanged(mCalories);
}
}
};
/**
* Show a notification while this service is running.
*/
private void showNotification() {
CharSequence text = getText(R.string.app_name);
Notification notification = new Notification(R.drawable.ic_notification, null,
System.currentTimeMillis());
notification.flags = Notification.FLAG_NO_CLEAR | Notification.FLAG_ONGOING_EVENT;
Intent pedometerIntent = new Intent();
pedometerIntent.setComponent(new ComponentName(this, Pedometer.class));
pedometerIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
pedometerIntent, 0);
/* notification.setLatestEventInfo(this, text,
getText(R.string.notification_subtitle), contentIntent);
mNM.notify(R.string.app_name, notification);*/
}
// BroadcastReceiver for handling ACTION_SCREEN_OFF.
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
// Check action just to be on the safe side.
if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
// Unregisters the listener and registers it again.
StepService.this.unregisterDetector();
StepService.this.registerDetector();
if (mPedometerSettings.wakeAggressively()) {
wakeLock.release();
acquireWakeLock();
}
}
}
};
private void acquireWakeLock() {
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
int wakeFlags;
if (mPedometerSettings.wakeAggressively()) {
wakeFlags = PowerManager.SCREEN_DIM_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP;
}
else if (mPedometerSettings.keepScreenOn()) {
wakeFlags = PowerManager.SCREEN_DIM_WAKE_LOCK;
}
else {
wakeFlags = PowerManager.PARTIAL_WAKE_LOCK;
}
wakeLock = pm.newWakeLock(wakeFlags, TAG);
wakeLock.acquire();
}
}
ho to make this service live even when app killed also I have to count footstep even when app killed.
I m calling service like this.
startService(new Intent(Pedometer.this,
StepService.class));

#Override
public void onTaskRemoved(Intent rootIntent)
{
super.onTaskRemoved(rootIntent);
startStepService();
}
private void startStepService()
{
startService(new Intent(this,StepService.class));
}

stop an Android service

I have searched and found questions similar to the title, but no solution so far.
I have the following service
public class MyService extends Service {
public MyService() {
}
private static final String TAG =
"ServiceExample";
#Override
public void onCreate() {
super.onCreate();
Log.i(TAG, "Service onCreate");
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i(TAG, "Service onStartCommand " + startId);
final int currentId = startId;
Runnable r = new Runnable() {
public void run() {
for (int i = 0; i < 3; i++)
{
long endTime = System.currentTimeMillis() +
10*1000;
while (System.currentTimeMillis() < endTime) {
synchronized (this) {
try {
wait(endTime -
System.currentTimeMillis());
} catch (Exception e) {
}
}
}
Log.i(TAG, "Service running " + currentId);
}
//stopSelf();
}
};
Thread t = new Thread(r);
t.start();
return Service.START_STICKY;
}
#Override
public IBinder onBind(Intent intent) {
Log.i(TAG, "Service onBind");
return null;
}
#Override
public void onDestroy() {
Log.i(TAG, "Service onDestroy");
super.onDestroy();
//Log.i(TAG, "Service Destroyed");
}
}
And this is called from my activity that has two buttons: One for starting the service and one for stopping it
public class ServiceExampleActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_service_example);
}
public void buttonClick(View view)
{
Intent intent = new Intent(this, MyService.class);
startService(intent);
}
public void stopClick(View view)
{
Intent intent = new Intent(this, MyService.class);
stopService(intent);
}
}
However this does not work. The service is not stopped.
Strangely the onDestroy function is called but after that the runnable is still running.
How can I stop the service?
=============================================
EDIT: I finally achieved it by the following changes:
In the onDestroy function
#Override
public void onDestroy() {
Log.i(TAG, "Service onDestroy");
// mHandler.removeCallbacks(r);
t.interrupt();
super.onDestroy();
//Log.i(TAG, "Service Destroyed");
}
the thread t had to be a class member (before it was declared inside onStartCommand) and I modified the runnable as this
r = new Runnable() {
public void run() {
for (int i = 0; i < 3; i++)
{
long endTime = System.currentTimeMillis() +
10*1000;
while (System.currentTimeMillis() < endTime) {
synchronized (this) {
try {
wait(endTime -
System.currentTimeMillis());
} catch (Exception e) {
return; //HERE to detect if the thread has been interrupted
}
}
}
Log.i(TAG, "Service running " + currentId);
}
stopSelf();//I have to use this otherwise it doesn't stop
}
};
I wonder why normally I have to use stopSelf but when interrupted it is not necessary. I suppose stopSelf just calls onDestroy

Stopping a service just kills the context. The framework does not know about any other Threads you may have started- its your job to kill them in onDestroy(). Save the Thread when you create it. In onDestroy(), interrupt it. And in your thread's runnable, regularly check to see if the Thread is interrupted, and return if so. Do not call Thread.stop(), as it may leave your app in an unsafe state.

Update android Textview continuously

I am working on an Android Application which have an one activity class and service class. In service, Continuous bulk data (1090 bytes) will be received every 10 milliseconds. I need to update the text view continuously with these bulk data. What is recommended way to update Text view from a continuous background service?
Service Class
public class RecepService extends Service {
public static Handler mHandler;
StringBuilder hexstring;
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
init();
}
private void init() {
mHandler = new Handler() {
#Override
public void handleMessage(Message msg) {
if (msg.what == 0x123) {
byte[] readBuf = (byte[]) msg.obj;
int readBuflen = msg.arg1;
// here will receive 1090 bytes of data
// every 10 milliseconds
Receivepatientattributes(readBuf,readBuflen);
}
}
};
}
public void Receivepatientattributes(byte[] readBuf, int len) {
String total_data = "";
total_data = bytetohex(readBuf, len);
MainActivity.recep.setText(MainActivity.recep.getText().toString() + "\t" +
"" + total_data );
}
String bytetohex(byte[] txt, int len) {
String p="";
byte[] text = new byte[len];
text = txt;
hexstring = new StringBuilder();
for (int j = 0; j < len; j++) {
String hex= Integer.toHexString(0xFF & txt[j]);
if (hex.length()==1) {
hexstring.append("0");
}
hexstring.append(hex+" ");
}
p=p+hexstring.toString();
return p;
}
#Override
public void onDestroy() {
super.onDestroy();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
return START_STICKY;
}
}

If you want to use Schedule and timer task then you can See My Answer
To solve current issue follow this bellow instructions.
Suppose your activity has a Broadcast Receiver
private BroadcastReceiver mReceiver;
Then you override methods onResume() where your broadcast receiver will be registered and also onPause() where will your receiver be unregistered:
#Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
IntentFilter intentFilter = new IntentFilter(
"android.intent.action.MAIN");
mReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
//extract your message from intent
String msg_for_me = intent.getStringExtra("YOUR_MESSAGE");
//log your message value
Log.i("MyTag", msg_for_me);
}
};
//registering your receiver
this.registerReceiver(mReceiver, intentFilter);
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
//unregister your receiver
this.unregisterReceiver(this.mReceiver);
}
Here the broadcast receiver is filtered via android.intent.action.MAIN and from Service the message will BroadCast using this filter
Now your Method Receivepatientattributes will like this :
public void Receivepatientattributes(byte[] readBuf, int len) {
String total_data = "";
total_data = bytetohex(readBuf, len);
Intent i = new Intent("android.intent.action.MAIN").putExtra("YOUR_MESSAGE", total_data);
this.sendBroadcast(i);
}
Thats it. :)

User LocalBroadcastManager
public void Receivepatientattributes(byte[] readBuf, int len) {
String total_data = "";
total_data = bytetohex(readBuf, len);
Intent intent = new Intent("update-text");
// add data
intent.putExtra("message", total_data);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}
In MainActivity
#Override
public void onResume() {
super.onResume();
// Register mMessageReceiver to receive messages.
LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
new IntentFilter("update-text"));
}
private boolean mCanBeUpdated = true;
private static final int ONE_SEC = 1000; //ms
private static final int RECEPTION_SPEED = 10; //ms
private static final int CYCLES = (int) (ONE_SEC / RECEPTION_SPEED);
private int mCurrentCycle = -1;
private String mMsgCache = "";
// handler for received Intents for the "update-text" event
private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
// Extract data included in the Intent
String message = intent.getStringExtra("message");
Log.d("receiver", "Got message: " + message);
mMsgCache = mMsgCache + "\t" + message;
if (mCanBeUpdated) {
// No problem updating UI here, refer --> http://stackoverflow.com/a/5676888/1008278
final Handler handler = new Handler(context.getMainLooper());
handler.post(new Runnable() {
#Override
public void run() {
MainActivity.recep.append(mMsgCache);
mMsgCache = "";
}
});
mCanBeUpdated = false;
} else if (mCurrentCycle >= CYCLES) {
mCurrentCycle = -1;
mCanBeUpdated = true;
} else {
mCurrentCycle++;
}
}
};
#Override
protected void onPause() {
// Unregister since the activity is not visible
LocalBroadcastManager.getInstance(this).unregisterReceiver(mMessageReceiver);
super.onPause();
}
Reference

You can use Timer for Continously updating your textview.
Set value in preferences every time when your service is running with the latest value.
Now in Timer get that value from preferences and update your TextView with that value.
Here is some code :
class UpdateTimeTask extends TimerTask {
public void run() {
textview.setText("updated value");
}
}
Set in onCreate ();
Timer timer = new Timer();
UpdateTimeTask UpdateTimeTask = new UpdateTimeTask ();
timer.schedule(UpdateTimeTask, 1000);

Use handler beacuse A Handler allows communicating back with UI thread from other background thread.
boolean handlerStop = false;
void handleHandler(){
Handler handler =new Handler();
final Runnable r = new Runnable() {
public void run() {
handler.postDelayed(this, 30000);
if(!handlerStop) {
updateTextView() //update your text with other thread like asyncronous thread
}
}
};
handler.postDelayed(r, 0000);
}
#Override
public void onResume() {
super.onResume();
handlerStop=false;
handleHandler();
}
#Override
public void onPause() {
super.onPause();
handlerStop=true;
handleHandler();
}
#Override
public void onStop() {
super.onStop();
handlerStop=true;
handleHandler();
}