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how to get latitude and longitude value in BroadcastReceiver service?

So i made an app which will run if the power button of the phone pressed 5 time the app will execute something like open url in Background. Now the problem is i want extract latitude and longitude value in that time.
code is
LockService class
public class LockService extends Service {
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
final IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
filter.addAction(Intent.ACTION_USER_PRESENT);
final BroadcastReceiver mReceiver = new ScreenReceiver();
registerReceiver(mReceiver, filter);
return super.onStartCommand(intent, flags, startId);
}
public class LocalBinder extends Binder {
LockService getService() {
return LockService.this;
}
}
}
ScreenReceiver
public class ScreenReceiver extends BroadcastReceiver {
LocationManager locationManager;
static int countPoweroff =0;
public static boolean wasScreenOn = true;
int lol;
#Override
public void onReceive(final Context context, final Intent intent) {
Log.e("LOB","onReceive");
if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
// do whatever you need to do here
wasScreenOn = false;
countPoweroff++;
Log.e("LOB",""+countPoweroff);
Log.e("LOB","wasScreenOn"+wasScreenOn);
} else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
// and do whatever you need to do here
if (countPoweroff == 3){
Log.e("LOB","userpresent");
Log.e("LOB","wasScreenOn"+wasScreenOn);
String url = "http://www.stackoverflow.com";
Intent i = new Intent(Intent.ACTION_VIEW);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.setData(Uri.parse(url));
context.startActivity(i);
Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
vibrator.vibrate(VibrationEffect.createOneShot(500, VibrationEffect.DEFAULT_AMPLITUDE));
} else {
//deprecated in API 26
vibrator.vibrate(500);
}
countPoweroff =0;
}
wasScreenOn = true;
}else if(intent.getAction().equals(Intent.ACTION_USER_PRESENT)){
}
}
Run service in main activity
startService(new Intent(getApplicationContext(), LockService.class));
I have used basic Locationmanager code in main activity which works only when the activity open.

Any code that you put in an activity is of course going to be executed only when the activity is running. If your location manager is in activity and the activity is not running, then you can't get location. Your bus won't move anywhere when the driver turned off the engine and went to a lunch break. Doing anything that is unrelated to Ux in an activity is a bad design. I don't know the detail of your implementation, hence, it is difficult to say anything more.You should implement the location manager in a service and send result to the activity using Callable or CompletableFuture.

How does a service notify an activity class by sending an object and calling a method from that activity with the sent object?

I am aware of the BroadCastReceiver, but how can I use it to call a method in my activity. So if I get a notification from my service, a button in my UI turns red, and red being the object that has been sent from the service and turning red the method that has been called by the activity.
sorry for bad english :)

Register a BroadcastReceiver in your activity
private BroadcastReceiver mMessageReceiver = new BroadcastReceiver()
{
#Override
public void onReceive(Context context, Intent intent)
{
String message = intent.getStringExtra("message");
Log.d("receiver", "Got message: " + message);
if (message.equals("eventOne"))
{
//do something
}
else if (message.equals("eventTwo"))
{
//do something else
}
}
};
Override onResume and onDestroy of your activity
#Override
protected void onResume()
{
super.onResume();
LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
new IntentFilter("my-event"));
}
#Override
protected void onDestroy()
{
LocalBroadcastManager.getInstance(this).unregisterReceiver(mMessageReceiver);
super.onDestroy();
}
To check if your service is running add the following on your activity
private static boolean isServiceRunning(String serviceName, Context context)
{
ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE))
{
if (serviceName.equals(service.service.getClassName()))
{
return true;
}
}
return false;
}
Call it like this
boolean isServiceRunning = isServiceRunning(MyService.class.getName(), this.getApplicationContext());
if (!isServiceRunning)
{
Intent startMyServiceIntent = new Intent(this.getApplicationContext(), MyService.class);
startService(startMyServiceIntent);
}
Finally on your service add a method like that and call it whenever you want
private void sendMessage(String event)
{
Intent intent = new Intent("my-event");
intent.putExtra("message", event);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}
#Override
public int onStartCommand(Intent intent, int flags, int startId)
{
Toast.makeText(this, "Service Started", Toast.LENGTH_SHORT).show();
sendMessage("eventOne");
return START_STICKY;
}
And don't forget to add your service to manifest
<application
...
...
<service android:name=".MyService"/>
</application>

You can use a BroadcastReceiver, an event bus or an observable. In your activity, listen for the event and call a method that updates your UI how you want.
I do something similarly for GCM intent service. I use an rxBus that posts when the service is triggered. My activity subscribes to the bus and reacts when it sees the post.

Send data to activity from already running sticky service

I created sticky background service, that should be started on boot:
public class AutostartReceiver extends BroadcastReceiver
{
public AutostartReceiver()
{
}
#Override
public void onReceive(Context context, Intent intent)
{
context.startService(new Intent(context, MyService.class));
}
}
My service is intended to do some work in background, it's implemented by creating thread for this. Also there is Messenger class used for sending work status to my main activity:
#Override
public int onStartCommand(Intent intent, int flags, int startId)
{
Log.i(TAG, "Service onStartCommand " + startId);
final int currentId = startId;
Messenger callback = null;
if(intent!=null)
{
callback = intent.getParcelableExtra("messenger");
}
final Messenger finalCallback = callback;
Runnable r = new Runnable()
{
public void run()
{
... do something, then stop
stopSelf();
}
};
if(t == null)
{
t = new Thread(r);
t.start();
}
return Service.START_STICKY;
}
Main activity receives messages sent from background thread running inside my service (some commands, that service is sending periodically:
Handler mHandler = new Handler()
{
#Override
public void handleMessage(Message msg)
{
switch (msg.what)
{
case 0:
Toast.makeText(MainActivity.this,"Service runing", Toast.LENGTH_LONG).show();
break;
}
}
};
This works only if I start my service from activity, with activity's context. Obviously, if service is started on boot, or my app was closed (removed from last app list) and opened again, my activity is unable to get any messages from service any more.
If I invoke start service while service is already running, it will simply run OnStartCommand again, so either new thread will be created (I don't want it) or I need to destroy running thread and run thread again.
Is there any way to get my activity receiving messages from service, without actually touching already running thread inside it? I know about bound services, but it's not clear for me how to use them in my specific case.

As Alternate way You can use LocalBroadcastManager to send Data from Service to Activity.
Broadcast Your message from Service:
private void broadcastMessage(Context context){
Intent intent = new Intent("UI_UPDATE_BROADCAST");
intent.putExtra("MESSAGE", "MyMessage");
LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
}
Register Broadcast Receiver in your activity to receive messages:
#Override
public void onResume() {
super.onResume();
LocalBroadcastManager.getInstance(mContext).registerReceiver(mMessageReceiver, new IntentFilter("UI_UPDATE_BROADCAST"));
}
#Override
public void onPause() {
super.onPause();
LocalBroadcastManager.getInstance(mContext).unregisterReceiver(mMessageReceiver);
}
private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
//Do Something With Received Data
String msg = intent.getStringExtra("MESSAGE");
}
};

I would use a broadcast receiver for Service-to-Activity communication.
Code:
public class MyActivity extends Activity {
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
//Toast here
}
#Override
protected void onCreate(Bundle savedInstanceState) {
LocalBroadcastManager.getInstance(this).registerReceiver(broadcastReceiver, new IntentFilter("message-name"));
}
#Override
public void onDestroy() {
LocalBroadcastManager.getInstance(this).unregisterReceiver(broadcastReceiver);
super.onDestroy();
}
}
Then in your service you would broadcast the message like this:
Intent intent = new Intent("message-name");
intent.putExtra("data", 1);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);

EventListener for Power Button press in a Service

I want to listen the power key event in the service.
How can in do that ?
Currently I am working with an app, where I need to listen the power button for some events, from a service which is running in a background, even when the app is killed or stopped.
Somehow I can manage to get it.
But when I kill/stop the app, the service is getting stopped.
How can i overcome this ?
Currently the code i am using this :
Service Class:
public class SampleService extends Service
{
SettingContentObserver mSettingsContentObserver;
AudioManager mAudioManager;
private ComponentName mRemoteControlResponder;
private Intent intent;
#Override
public int onStartCommand(Intent intent, int flags, int startId)
{
Log.v("StartServiceAtBoot", "StartAtBootService -- onStartCommand()");
// We want this service to continue running until it is explicitly
// stopped, so return sticky.
return START_STICKY;
}
#Override
public void onStart(Intent intent, int startId) {
boolean screenOn = intent.getBooleanExtra("screen_state", false);
if (!screenOn) {
Toast.makeText(getApplicationContext(), "On", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getApplicationContext(), "Off", Toast.LENGTH_SHORT).show();
}
}
public void onCreate()
{
mSettingsContentObserver = new SettingContentObserver(this,new Handler());
getApplicationContext().getContentResolver().registerContentObserver
(android.provider.Settings.System.CONTENT_URI, true, mSettingsContentObserver );
mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
mRemoteControlResponder = new ComponentName(getPackageName(),
StartAtBootServiceReceiver.class.getName());
IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
BroadcastReceiver mReceiver = new StartAtBootServiceReceiver();
registerReceiver(mReceiver, filter);
}
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
public void onDestroy()
{
getApplicationContext().getContentResolver().unregisterContentObserver(mSettingsContentObserver);
}
}
BroadcastReceiver Class:
public class StartAtBootServiceReceiver extends BroadcastReceiver
{
static boolean wasScreenOn;
private boolean screenOff;
public void onReceive(Context context, Intent intent)
{
if(intent.getAction().equals(Intent.ACTION_SCREEN_OFF))
{
wasScreenOn = false;
Toast.makeText(context, "Power Off", Toast.LENGTH_SHORT).show();
}
else if(intent.getAction().equals(Intent.ACTION_SCREEN_ON))
{
wasScreenOn = true;
}
Intent i = new Intent(context, SampleService.class);
i.putExtra("screen_state", screenOff);
i.setAction("com.example.antitheft.SampleService");
context.startService(i);
//
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
Intent i1 = new Intent();
i1.setAction("com.example.sampleonkeylistener.MainActivity");
context.startService(i1);
}
}
}
given above is the sample code and i have created AndroidManifest.xml files also with user's permission but i cannot get the app continue service if it is killed or stopped.
Thanks in Advance.

#Override
public void onDestroy() {
super.onDestroy();
startService(new Intent(this, SampleService.class));
}
This is one way to ensure that service will never stop even user want to destroy it.
This is one Just ONE of ways to achieve what you are trying to achieve.
Secondly, you can try and run service in "foreground" by using startForeground().
Also, make sure that in you return "START_STICKY" (which you are doing in the sample code that you shared and I trust that you are also doing in App's code too :) ) in Services's onStartCommand().
This will ensure that If this service's process is killed while it is started (after returning from onStartCommand(Intent, int, int)), then leave it in the started state but don't retain this delivered intent. Later the system will try to re-create the service.
And you may find some additional pointers/hints to make sure your service is not stopped at below link.
How can we prevent a Service from being killed by OS?
Just pick and choose the approach that best suits YOUR Need/implementation.

Accessing context from another thread

I am starting to migrate some PC Java applications to Android environments being a complete newbie concerning Android platform.
I found a problem when I tried to use a Service reference as context for a Toast message.
This is the relevant part of my Service code:
public class ServicePFPE extends Service {
Timer messageSimulator;
TimerTask messagePoll;
private class MessageReceptionTask extends TimerTask
{
public MessageReceptionTask(Context c) {
context = c;
}
#Override
public void run() {
String shownText = "Message received!! on " + (new Date(System.currentTimeMillis())).toString();
//doToast(shownText, context); //THIS LINE MAKES THE APP CRASH!
System.out.println(shownText); //But I can do this
}
private Context context;
}
public ServicePFPE() {
super();
messageSimulator = new Timer();
messagePoll = new MessageReceptionTask(this);
}
#Override
public IBinder onBind(Intent intent)
{
doToast("Service: onBind");
return null;
}
...
...
...
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
doToast("Service: onStartCommand");
messageSimulator.schedule(messagePoll, 5000, 5000);
return super.onStartCommand(intent, flags, startId);
}
...
...
...
private void doToast(String msg) { doToast(msg, this); }
private void doToast(String msg, Context con) {
Toast.makeText(con,msg,Toast.LENGTH_SHORT).show();
}
}
When the scheduled task runs reaching doToast call Android notifies that "Unfortunatelly, myAPP has stopped".
I think it has something to do with the fact I am using the service context in a different thread but I don't know for sure.
Could you confirm if that is the case? What is the right way to run a timer from a service and be able to use its context? If that is not possible, can I get a context for that thread so I can generate Toasts user messages.

It depends on what you really need, if you are planning to show simple notifications, maybe instead of toasts you can use Android notification bar (which is the standard way to show them). For example you can use:
/**
* Show a notification while this service is running.
*/
private void showNotification() {
// In this sample, we'll use the same text for the ticker and the expanded notification
CharSequence text = getText(R.string.local_service_started);
NotificationManager mNM;
mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
// Set the icon, scrolling text and timestamp
Notification notification = new Notification(R.drawable.stat_sample, text,
System.currentTimeMillis());
// The PendingIntent to launch our activity if the user selects this notification
PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
new Intent(this, LocalServiceActivities.Controller.class), 0);
// Set the info for the views that show in the notification panel.
notification.setLatestEventInfo(this, getText(R.string.local_service_label),
text, contentIntent);
// Send the notification.
mNM.notify(NOTIFICATION, notification);
}
however, if you just want toasts, you can show them from the service, your problem is that the timertask is being executed in a different thread that the UI thread (where the service is running). to "post" this code to the UI thread you can do it directly with something like this:
Handler handler;
#Override
public void onCreate() {
// Handler will get associated with the current thread,
// which is the main thread.
handler = new Handler();
super.onCreate();
}
private void runOnUiThread(Runnable runnable) {
handler.post(runnable);
}
Source
And finally if you want fully interaction between service and activities, you have several ways:
Use binders, for simple communications, this is moreless what you need.
Use a messenger, to more complicated communications.
If you only need dialogs you are always able to launch new activities in dialog mode.
AIDL...
Documentation about 1 & 2 here and here
Binders:
They let you bind different objects in your application letting them access directly to the object itself and its functions, example from android doc:
public class LocalService extends Service {
// Binder given to clients
private final IBinder mBinder = new LocalBinder();
// Random number generator
private final Random mGenerator = new Random();
/**
* Class used for the client Binder. Because we know this service always
* runs in the same process as its clients, we don't need to deal with IPC.
*/
public class LocalBinder extends Binder {
LocalService getService() {
// Return this instance of LocalService so clients can call public methods
return LocalService.this;
}
}
#Override
public IBinder onBind(Intent intent) {
return mBinder;
}
/** method for clients */
public int getRandomNumber() {
return mGenerator.nextInt(100);
}
}
public class BindingActivity extends Activity {
LocalService mService;
boolean mBound = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
#Override
protected void onStart() {
super.onStart();
// Bind to LocalService
Intent intent = new Intent(this, LocalService.class);
bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
}
#Override
protected void onStop() {
super.onStop();
// Unbind from the service
if (mBound) {
unbindService(mConnection);
mBound = false;
}
}
/** Called when a button is clicked (the button in the layout file attaches to
* this method with the android:onClick attribute) */
public void onButtonClick(View v) {
if (mBound) {
// Call a method from the LocalService.
// However, if this call were something that might hang, then this request should
// occur in a separate thread to avoid slowing down the activity performance.
int num = mService.getRandomNumber();
Toast.makeText(this, "number: " + num, Toast.LENGTH_SHORT).show();
}
}
/** Defines callbacks for service binding, passed to bindService() */
private ServiceConnection mConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName className,
IBinder service) {
// We've bound to LocalService, cast the IBinder and get LocalService instance
LocalBinder binder = (LocalBinder) service;
mService = binder.getService();
mBound = true;
}
#Override
public void onServiceDisconnected(ComponentName arg0) {
mBound = false;
}
};
}
Messenger:
More advanced & complicated, in this way you can send messages from one object to another:
public class MessengerService extends Service {
/** Command to the service to display a message */
static final int MSG_SAY_HELLO = 1;
/**
* Handler of incoming messages from clients.
*/
class IncomingHandler extends Handler {
#Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_SAY_HELLO:
Toast.makeText(getApplicationContext(), "hello!", Toast.LENGTH_SHORT).show();
break;
default:
super.handleMessage(msg);
}
}
}
/**
* Target we publish for clients to send messages to IncomingHandler.
*/
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();
}
}
public class ActivityMessenger extends Activity {
/** 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();
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
#Override
protected void onStart() {
super.onStart();
// Bind to the service
bindService(new Intent(this, MessengerService.class), mConnection,
Context.BIND_AUTO_CREATE);
}
#Override
protected void onStop() {
super.onStop();
// Unbind from the service
if (mBound) {
unbindService(mConnection);
mBound = false;
}
}
}
In case you want to show activities as fancy dialogs to show the updates you can use a regular activity with this theme:
<activity android:theme="#android:style/Theme.Dialog" />

Any UI related code should be ran on the UI thread using RunOnUiThread method.

you should set a global context like this:
public static Activity currentActivity=null;
and after run your main activity or any activity that runs service set context like this:
MainActivity.currentActivity = this;
after that in toast use this context:
Toast.makeText(MainActivity.currentActivity," text", Toast.LENGTH_LONG);
hope use full