I'm new in android programming.So please help me..
I'm developing an app in which it continuously monitors the current location.I want he app to run in background even if the user goes for an other app.He will be able to stop the location updates whenhe returns to my app.Everything is working fine until i do an outgoing call.I'm not able to remove location updates after the outgoing call..
Below is my code..
tb_trackstartstop.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked)
{
trackflag=true;
tracklistener(HomeActivity.this);
}
else
{
if(trackflag)
trackmlocManager.removeUpdates(trackmlocListener);
trackflag=false;
Toast.makeText(HomeActivity.this, "Stopped", Toast.LENGTH_LONG).show();
}
}
and my code for onpause and onresume is as follows
#Override
protected void onPause()
{
super.onPause();
bundle.putBoolean("trackflagState", trackflag);
}
#Override
protected void onResume()
{
super.onResume();
trackflag=bundle.getBoolean("trackflagState",false);
}
Use BroadcastReceiver
Register receiver in Manifest:
<receiver android:name=".MyCallReciever">
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" />
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
</intent-filter>
Permission in manifest:
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
Receiver class:
public class MyCallReciever extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(
TelephonyManager.EXTRA_STATE_OFFHOOK)) {
//Unregister the location listener here.
}
}
}
Hope this helps.
Related
I am developing real time application so i need to send continuous or some periodic (in seconds) location data as latitude and longitude to web service using rest API. so what can i use to send continuous or periodic data to server? do i need to use back ground service or anything else? i don't know how background service work and how to use it? so can anyone help me for this? thanks in advance.
protected void startLocationUpdates() {
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
}
protected void stopLocationUpdates() {
LocationServices.FusedLocationApi.removeLocationUpdates(
mGoogleApiClient, this);
}
#Override
public void onConnectionFailed(ConnectionResult result) {
Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = "
+ result.getErrorCode());
}
#Override
public void onConnected(Bundle arg0) {
displayLocation();
if (mRequestingLocationUpdates) {
startLocationUpdates();
}
}
#Override
public void onConnectionSuspended(int arg0) {
mGoogleApiClient.connect();
}
#Override
public void onLocationChanged(Location location) {
mLastLocation = location;
Toast.makeText(getApplicationContext(), "Location changed!",
Toast.LENGTH_SHORT).show();
displayLocation();
}
you need to make a service for that if you want to send data continuous to the server even after your application is closed.
Here is how i made my service.
public class FeatureService extends Service
{
#Nullable
#Override
public IBinder onBind(Intent intent)
{
return null;
}
#Override
public void onCreate()
{
// make your api call here and other implementations according to your requirement.
super.onCreate();
}
#Override
public void onDestroy()
{
// what you want when service is destroyed
}
Declare your service in Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name="Your Serive"
android:enabled="true">
</service>
</application>
And Finally call your service like this in onCreate of your relevant activity.
Intent i= new Intent(this,FeatureService.class);
startService(i);
Get the lat and Long Values, then Schedule a periodic task to run the method to send value to the server
you can use Job Scheduler (https://developer.android.com/reference/android/app/job/JobScheduler.html)
or
You can use android-job/evernote to do a periodic Task
(https://github.com/evernote/android-job)
private void schedulePeriodicJob() {
int jobId = new JobRequest.Builder(DemoSyncJob.TAG)
.setPeriodic(TimeUnit.MINUTES.toMillis(15), TimeUnit.MINUTES.toMillis(5))
.setPersisted(true)
.build()
.schedule();
}
I've checked this example of how to handle network connectivity changes:
Android Check Internet Connection and found a very nice piece of code of how to handle this changes:
public class NetworkChangeReceiver extends BroadcastReceiver {
#Override
public void onReceive(final Context context, final Intent intent) {
String status = NetworkUtil.getConnectivityStatusString(context); //some internal class to determinate which type is connected
Toast.makeText(context, status, Toast.LENGTH_LONG).show();
}
}
To make this thing work I need to declare this BroadcastReceiver inside my manifest file:
<application ...>
...
<receiver
android:name="net.viralpatel.network.NetworkChangeReceiver"
android:label="NetworkChangeReceiver" >
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
<action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
</intent-filter>
</receiver>
...
</application>
Now I want to update UI, when wifi/mobile data is connected.
I can either make the NetworkChangeReceiver class inner static or external. But what I need is that I can work with my MainActivity UI from public void onReceive. How I can do this?
The answer was easy. I don't need to register my broadcast in order to get broadcast about connectivity change:
private BroadcastReceiver networkConnectivityReciever = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
NetworkInfo currentNetworkInfo = intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
if (dialog != null) {
if(currentNetworkInfo.isConnected()){
dialog.dismiss();
webView.reload();
}else{
dialog.show(((MainActivity) context).getSupportFragmentManager(), "");
}
}
}
};
#Override
protected void onResume() {
super.onResume();
registerReceiver(networkConnectivityReciever,
new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
}
#Override
protected void onPause() {
super.onPause();
unregisterReceiver(networkConnectivityReciever);
}
And only thing I need in manifest is this:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
I need to be able to receive incoming Twilio calls regardless of whether the app is currently running or not.
Once the user has started the app and logged into our server, I start the service shown below.
The Service is started sticky, and at no point is stopService or stopSelf etc ever called, so the service should still be running after the App is closed.
When the App is running, IncomingCallActivity starts fine in response to a Twilio call.
If the App is in the background, IncomingCallActivity still starts fine in response to a Twilio call.
If however the App is closed, IncomingCallActivity no longer starts in response to a Twilio call.
Why isn't IncomingCallActivity started if the App has been closed??
public class CallService extends Service implements Twilio.InitListener, DeviceListener, ConnectionListener {
private Device mDevice;
private Connection mConnection;
#Override
public void onCreate() {
super.onCreate();
registerBroadcastReceiver();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
// Initialize the Twilio SDK if required
if (!Twilio.isInitialized()) {
Twilio.initialize(getApplicationContext(), this);
} else {
getCapabilityToken("CallService", getUser());
}
...
return START_STICKY;
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onDestroy() {
// Unregister broadcast receiver
final LocalBroadcastManager localBroadcastManager = LocalBroadcastManager.getInstance(this);
localBroadcastManager.unregisterReceiver(mBroadcastReceiver);
super.onDestroy();
}
#Override
public void onInitialized() {
getCapabilityToken("CallService", getUser());
}
#Override
public void onError(Exception e) {
}
private void getCapabilityToken(String string, User user) {
// Request the capability token from the server.
...
}
protected void setCapabilityToken() {
// Create device using the capability token
mDevice = Twilio.createDevice(getUser().capabilityToken, this);
// Set pending intent for Twilio device
Intent intent = new Intent(this, IncomingCallActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
mDevice.setIncomingIntent(pendingIntent);
// Broadcast that CallService is ready, to any registered receivers
Intent broadcastIntent = new Intent(App.ACTION__TWILIO_SERVICE_READY);
LocalBroadcastManager.getInstance(this).sendBroadcast(broadcastIntent);
}
public void connect() {
mConnection = mDevice.connect(null /* parameters */, null /* ConnectionListener */);
if (mConnection == null) {
...
} else {
...
}
}
private void answerCall(Device device, Connection connection) {
if (mConnection != null) {
mConnection.disconnect();
}
mConnection = connection;
mConnection.accept();
}
/**
* BroadcastReceiver
*/
private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
switch (action) {
case App.ACTION__CAPABILITY_TOKEN_OBTAINED:
setCapabilityToken();
break;
case App.ACTION__CONNECT:
connect();
break;
}
}
};
#Override
public void onStartListening(Device device) {
}
#Override
public void onStopListening(Device device) {
}
#Override
public void onStopListening(Device device, int i, String s) {
}
#Override
public boolean receivePresenceEvents(Device device) {
return false;
}
#Override
public void onPresenceChanged(Device device, PresenceEvent presenceEvent) {
}
#Override
public void onConnecting(Connection connection) {
}
#Override
public void onConnected(Connection connection) {
}
#Override
public void onDisconnected(Connection connection) {
}
#Override
public void onDisconnected(Connection connection, int i, String s) {
}
}
Edit:
To clarify how I've declared my services etc, here is my AndroidManifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest package="au.com.encall.encall"
xmlns:android="http://schemas.android.com/apk/res/android">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:name=".App"
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity
android:name=".IncomingCallActivity"
android:screenOrientation="portrait"/>
<service android:name=".services.CallService"/>
<service android:name=".services.DownloadService"/>
<service
android:name="com.twilio.client.TwilioClientService"
android:exported="false"
android:stopWithTask="false" />
<meta-data
... />
...
</application>
</manifest>
if you are using twilio demo than You need to service in Androidmenifest
<service android:name="com.twilio.client.TwilioClientService" android:exported="false" android:stopWithTask="true"/>
its working for me.
twilio provide their own service. so you need to just declare it on menifest.so does't need to create new service.
jusr remove this service and put it on android menifest.it will automatically start after app close.
Its Work for me no need extra service
<service android:name="com.twilio.client.TwilioClientService" android:exported="false" android:stopWithTask="false"/>
But How can we Handle if token is Expired ? At that time IncomingCallActivity no longer starts
I'm having some problems with services.
Service:
public class MyService extends Service {
public MyService() {
}
private static final String TAG = "AutoService";
private Timer timer;
private TimerTask task;
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
Toast.makeText(this, "Auto Service Created", Toast.LENGTH_LONG).show();
Log.d(TAG, "onCreate");
int delay = 5000; // delay for 5 sec.
int period = 5000; // repeat every sec.
timer = new Timer();
timer.scheduleAtFixedRate(task = new TimerTask(){
public void run()
{
System.out.println("done");
}
}, delay, period);
}
#Override
public boolean stopService(Intent name) {
timer.cancel();
task.cancel();
return super.stopService(name);
}
#Override
public void onDestroy(){
Toast.makeText(this, "Service Destroyed", Toast.LENGTH_SHORT).show();
super.onDestroy();
}
MainActivity:
public class ClientSocket extends ActionBarActivity {
CheckBox enablecheck;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_client_socket);
enablecheck = (CheckBox)findViewById(R.id.enablecheck);
enablecheck.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener()
{
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(enablecheck.isChecked()){
startService(new Intent(ClientSocket.this, MyService.class));
}else
{
stopService(new Intent(ClientSocket.this, MyService.class));
}
}
});
}
Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/Theme.AppCompat.Light" >
<activity
android:name=".ClientSocket"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name=".MyService"
android:enabled="true"
android:exported="true" >
</service>
</application>
I'm just testing, when I try to stop the service, the fuction onDestroy() is called but don't stop the service. The service/android:exported and android:enable both are true.
Any help?
The Timer instance create a background thread. If you want to stop the service completely you also need to stop the thread. Timer has a cancel() method you can call in the onDestroy() method to terminate the Timer.
Also, exporting the service means other applications (processes) can access it. You most likely don't need that.
The issue in the code is a misunderstanding of what
#Override
public boolean stopService(Intent name) {
timer.cancel();
task.cancel();
return super.stopService(name);
}
really does.
It is not a callback that is called when the service is stopped. Instead it is overriding the stopService method on Context, which you call to stop a service (as you do in the Activity in your example).
In fact the override of stopServicein your code has no effect at all.
timer.cancel();
task.cancel();
should be placed in the onDestroy method of your service.
I'm trying to learn to use Android BroadcasReceiver.
I wrote this code but It doesn't work... I tryed for example to change the Time etc...
What is it wrong?
I added in the Manifest:
<receiver android:name="com.example.broadcastreceiverspike.Broadcast" >
<intent-filter android:priority="100">
<action android:name="android.intent.action.ACTION_SCREEN_ON" />
<action android:name="android.intent.action.ACTION_SCREEN_OFF" />
<action android:name="android.intent.action.TIME_SET" />
</intent-filter>
</receiver>
My simple BroadcasReceiver:
public class Broadcast extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Log.d("BROADCAST", "It worked");
Toast.makeText(context, "BROADCAST", Toast.LENGTH_LONG).show();
}
}
My Main Activity (default main Activity)
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
I solved!
"unlike other broad casted intents, for Intent.ACTION_SCREEN_OFF and Intent.ACTION_SCREEN_ON you CANNOT declare them in your Android Manifest! I’m not sure exactly why, but they must be registered in an IntentFilter in your JAVA code"
http://thinkandroid.wordpress.com/2010/01/24/handling-screen-off-and-screen-on-intents/
Manifest
<receiver android:name=".Broadcast" >
<intent-filter>
<action android:name="android.intent.action.TIME_SET" />
</intent-filter>
</receiver>
Main Activity Class
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// INITIALIZE RECEIVER
IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
BroadcastReceiver mReceiver = new Broadcast();
registerReceiver(mReceiver, filter);
}
}
My broadcast receiver
public class Broadcast extends BroadcastReceiver {
public static String TAG = "BROADCAST";
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_TIME_CHANGED))
{
Log.d(TAG, "BROADCAST Cambio di orario");
Toast.makeText(context, "BROADCAST Cambio di orario", Toast.LENGTH_LONG).show();
}
else if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
// DO WHATEVER YOU NEED TO DO HERE
Log.d(TAG, "BROADCAST Screen OFF");
Toast.makeText(context, "Screen OFF", Toast.LENGTH_LONG).show();
} else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
// AND DO WHATEVER YOU NEED TO DO HERE
Log.d(TAG, "BROADCAST Screen ON");
Toast.makeText(context, "BROADCAST Screen ON", Toast.LENGTH_LONG).show();
}
}
}
Did you add the needed premissions?
uses-permission android:name="android.permission.READ_PHONE_STATE"
This is a receiver to handle when screen is off or on or locked:
public class ScreenReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent)
{
if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF))
{
}
else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON))
{
}
else if(intent.getAction().equals(Intent.ACTION_USER_PRESENT))
{
}
}
}
this is the manifest:
<receiver android:name=".ScreenReceiver">
<intent-filter>
<action android:name="android.intent.action.USER_PRESENT" />
<action android:name="android.intent.action.SCREEN_OFF" />
<action android:name="android.intent.action.SCREEN_ON" />
</intent-filter>
</receiver>
Check out this tutorial about broadcast receivers.
Update:
I'm not sure you're using this tutorial, because there are lots of useful stuff in this tutorial, like this:
#Override
public void onResume() {
super.onResume();
// Register mMessageReceiver to receive messages.
LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
new IntentFilter("my-event"));
}
// handler for received Intents for the "my-event" 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);
}
};
#Override
protected void onPause() {
// Unregister since the activity is not visible
LocalBroadcastManager.getInstance(this).unregisterReceiver(mMessageReceiver);
super.onPause();
}
In other words, you've created a custom broadcast receiver class, but you haven't used it.
And also please check this.
I had the same problem and I fixed it (tested on 4.3 and 5.1). I WAS able to declare "android.intent.action.USER_PRESENT" inside the manifest, as long as you have the READ_PHONE_STATE permission, it is OK!! My mini app consists of a Broadcast receiver that reacts to the screen ON/OFF state, and runs a background service that does continuous voice recognition. If the screen is off, the recognition is turned off. Here is the code, enjoy: MANIFEST:
<uses-permission android:name="android.permission.READ_PHONE_STATE"/> <receiver android:name="classes.VoiceLaunchReceiver" >
<intent-filter>
<action android:name="android.intent.action.USER_PRESENT" />
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
BROADCAST RECEIVER:
public class VoiceLaunchReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context ctx, Intent intent) {
Intent service = new Intent(ctx, VoiceLaunchService.class);
// service.putExtra(action, true);
Log.i("joscsr","Incoming Voice Launch Broadcast...");
if (intent.getAction().equals(Intent.ACTION_USER_PRESENT)) {
Log.i("joshcsr", "************\nCSR Resumed (BC)\n************");
ctx.startService(service);
}
if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
Log.i("joshcsr", "************\nCSR STOPPED by SCREEN (BC)\n************");
ctx.stopService(service);
}
}
}
As you can imagine, my USER_PRESENT broadcast receiver is not registered anywhere else. I do register ACTION_SCREEN_OFF and ON in the onCreate method of my service, who was triggered by my receiver.
#Override
public void onCreate() {
super.onCreate();
//Register screen ON/OFF BroadCast
launcher=new VoiceLaunchReceiver();
IntentFilter i=new IntentFilter(Intent.ACTION_SCREEN_OFF);
i.addAction(Intent.ACTION_SCREEN_ON);
registerReceiver(launcher,i);
Log.d("joshcsr","VoiceLaunch Service CREATED");
}
Finally I unregister the screen on/off in the onDestroy() of my service:
#Override
public void onDestroy() {
super.onDestroy();
unregisterReceiver(launcher);}