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How to pause the service while getting a incoming call and resume the service after call has ended?

My app is has a simple service, i need to pause that service when user makes or receive a call and service has to resume after call has ended.
Here is my Main Activity looks like:-
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = new Intent(getApplicationContext(), MyService.class);
startService(intent);
TelephonyManager TelephonyMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
TelephonyMgr.listen(new TeleListener(),
PhoneStateListener.LISTEN_CALL_STATE);
}
class TeleListener extends PhoneStateListener {
public void onCallStateChanged(int state, String incomingNumber) {
super.onCallStateChanged(state, incomingNumber);
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
Toast.makeText(getApplicationContext(), "CALL_STATE_IDLE",
Toast.LENGTH_LONG).show();
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
Toast.makeText(getApplicationContext(), "CALL_STATE_OFFHOOK",
Toast.LENGTH_LONG).show();
break;
case TelephonyManager.CALL_STATE_RINGING:
Toast.makeText(getApplicationContext(), incomingNumber,
Toast.LENGTH_LONG).show();
Toast.makeText(getApplicationContext(), "CALL_STATE_RINGING",
Toast.LENGTH_LONG).show();
break;
default:
break;
}
}
}}
Here is my Service class file:-
public class MyService extends Service {
private static final String TAG = "MyService";
private boolean isRunning = false;
#Override
public void onCreate() {
Log.i(TAG, "Service onCreate");
isRunning = true;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i(TAG, "Service onStartCommand");
new Thread(new Runnable() {
#Override
public void run() {
for (int i = 0; i < Integer.MAX_VALUE; i++) {
try {
Thread.sleep(1000);
} catch (Exception e) {
}
if (isRunning) {
Log.i(TAG, "Service running");
}
}
stopSelf();
}
}).start();
return Service.START_STICKY;
}
#Override
public IBinder onBind(Intent arg0) {
Log.i(TAG, "Service onBind");
return null;
}
#Override
public void onDestroy() {
isRunning = false;
Log.i(TAG, "Service onDestroy");
}}
From the TeleListener class in MainActivity i'm able to fetch the phone state. My problem is when the TelephonyManager is equal to CALL_STATE_OFFHOOK i need to pause the MyService and when the TelephonyManager is equal to CALL_STATE_IDLE i need to resume the MyService

you need to use onCallStateChanged method.
put this lines in your onCreate() method,it will initialize object of TelephonyManager and will setup listener for you.
TelephonyManager tManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
ListenToPhoneState listener = new ListenToPhoneState()
tManager.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
class definition of innerclass ListenToPhoneState will be looking like this,
private class ListenToPhoneState extends PhoneStateListener {
boolean callEnded=false;
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
UTILS.Log_e("State changed: " , state+"Idle");
if(callEnded)
{
//you will be here at **STEP 4**
//you should stop service again over here
}
else
{
//you will be here at **STEP 1**
//stop your service over here,
//i.e. stopService (new Intent(`your_context`,`CallService.class`));
//NOTE: `your_context` with appropriate context and `CallService.class` with appropriate class name of your service which you want to stop.
}
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
UTILS.Log_e("State changed: " , state+"Offhook");
//you will be here at **STEP 3**
// you will be here when you cut call
callEnded=true;
break;
case TelephonyManager.CALL_STATE_RINGING:
UTILS.Log_e("State changed: " , state+"Ringing");
//you will be here at **STEP 2**
break;
default:
break;
}
}
}
Explaination: While the call,your listener will go through following states,
Step 1: TelephonyManager.CALL_STATE_IDLE
initially your call state will be idle that is why the variable callEnded will have the value false.
Step 2: TelephonyManager.CALL_STATE_RINGING
now you are waiting for the receiver person to receive your call
Step 3: TelephonyManager.CALL_STATE_OFFHOOK
you cut the call
Step 4: TelephonyManager.CALL_STATE_IDLE
idle again
NOTE: If you don't want to know when the call ends and what should be done after ending the call then just remove callEnded variable and stop the service whenever you enter in the block of TelephonyManager.CALL_STATE_IDLE
I hope it will be helpful !!

You cannot pause or resume a service, you can start your service again when call ends. Inside PhoneStateListener's TelephonyManager.CALL_STATE_OFFHOOK constant, start your service again! Using different states of PhoneStateListener as mentioned by #Tijo, you can decide when to start or stop your service.

Missed call detection in android

I want to develop a missed call detector .Which notify through broadcast reciver I found the code from the following link
public abstract class PhoneCallReceiver extends BroadcastReceiver {
static CallStartEndDetector listener;
#Override
public void onReceive(Context context, Intent intent) {
savedContext = context;
if(listener == null){
listener = new CallStartEndDetector();
}
TelephonyManager telephony = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
telephony.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
}
public class CallStartEndDetector extends PhoneStateListener {
int lastState = TelephonyManager.CALL_STATE_IDLE;
boolean isIncoming;
public PhonecallStartEndDetector() {}
//Incoming call- IDLE to RINGING when it rings, to OFFHOOK when it's answered, to IDLE when hung up
//Outgoing call- from IDLE to OFFHOOK when dialed out, to IDLE when hunged up
#Override
public void onCallStateChanged(int state, String incomingNumber) {
super.onCallStateChanged(state, incomingNumber);
if(lastState == state){
//No change
return;
}
switch (state) {
case TelephonyManager.CALL_STATE_RINGING:
isIncoming = true;
//incoming call started
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
//Transition of ringing->offhook are pickups of incoming calls. Nothing down on them
if(lastState != TelephonyManager.CALL_STATE_RINGING){
isIncoming = false;
//outgoing call started
}
break;
case TelephonyManager.CALL_STATE_IDLE:
//End of call(Idle). The type depends on the previous state(s)
if(lastState == TelephonyManager.CALL_STATE_RINGING){
//toast here for missed call
}
else if(isIncoming){
//incoming call ended
}
else{
//outgoing call ended
}
break;
}
lastState = state;
}
}
}
The above code woking fine .But when i got the missed call from same no it repeat the missed call detection . How i will got the toast only once please help

Hi everyone I have got the solution now its working fine with missed call.
Here my Class code MyCallListener extended by BroadcastReciever
private static boolean ring=false;
private static boolean callReceived=false;
private String callerPhoneNumber;
private Context saveContext;
#Override
public void onReceive(Context mContext, Intent intent)
{
saveContext=mContext;
// Get the current Phone State
String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
if(state==null){
return;
}
Bundle bundle = intent.getExtras();
number= bundle.getString("incoming_number");
Calendar calendar=Calendar.getInstance();
currentTimeStamp=calendar.getTimeInMillis();
// If phone state "Rininging"
if(state.equals(TelephonyManager.EXTRA_STATE_RINGING))
{
ring =true;
// Get the Caller's Phone Number
}
// If incoming call is received
if(state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK))
{
callReceived=true;
}
// If phone is Idle
if (state.equals(TelephonyManager.EXTRA_STATE_IDLE))
{
// If phone was ringing(ring=true) and not received(callReceived=false) , then it is a missed call
if(ring==true&&callReceived==false)
{
Toast.makeText(mContext, "missed call : "+number, Toast.LENGTH_LONG).show();
//workingWithFunctions();
ring=false;
}
callReceived=false;
}}
dont forgot to define receiver in manifest file
<receiver android:name="com.abc.broadcastrecivers.MyBroadcastReciver" />
in the application tag

public class callServiceReceiver extends BroadcastReceiver
{
TelephonyManager telephonyManager;
#Override
public void onReceive(Context context, Intent intent)
{
phoneStateListener phoneListener = new phoneStateListener(context);
telephonyManager = (TelephonyManager) context
.getSystemService(Context.TELEPHONY_SERVICE);
telephonyManager.listen(phoneListener, PhoneStateListener.LISTEN_CALL_STATE);
}`enter code here`
public void onDestroy() {
telephonyManager.listen(null, PhoneStateListener.LISTEN_NONE);
}
}
public class phoneStateListener extends PhoneStateListener
{
private Context mContext;
private static boolean ringing =false;
private static boolean call_received =false;
//Constructor
public phoneStateListener(Context context)
{
mContext = context;
}
#Override
public void onCallStateChanged(int state, String incomingNumber)
{
super.onCallStateChanged(state, incomingNumber);
try
{
switch (state)
{
case TelephonyManager.CALL_STATE_RINGING:
ringing = true;
// Get the Caller's Phone Number
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
call_received =true;
break;
case TelephonyManager.CALL_STATE_IDLE:
// If phone was ringing(ringing=true) and not received(call_received=false) , then it is a missed call
if(ringing ==true&& call_received ==false)
{
Toast.makeText(mContext, "missed call : "+incomingNumber, Toast.LENGTH_LONG).show();
ringing =false;
}
call_received =false;
break;
}
}catch (Exception e)
{
e.printStackTrace(System.err);
}
}
}
<receiver android:name=".callServiceReceiver">
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" />
</intent-filter>
</receiver>

How to get the call end/ hanged event?

I have used TelephonyManager.CALL_STATE_OFFHOOK but unfortunately it gets called every time I touch the call button, i.e before the call is actually made.
my code:
public void onReceive(Context context, Intent intent) {
this.context = context;
listener = new CallStateListener();
if(intent.getAction().equals("android.intent.action.NEW_OUTGOING_CALL")){
Log.e("Aditya", "Broadcast listner");
//Currently no use
}
TelephonyManager tm = (TelephonyManager) context.getSystemService(context.TELEPHONY_SERVICE);
tm.listen(listener,PhoneStateListener.LISTEN_CALL_STATE);
}
public class CallStateListener extends PhoneStateListener {
int lastState = TelephonyManager.CALL_STATE_IDLE;
#Override
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
case TelephonyManager.CALL_STATE_RINGING:
// called when someone is ringing to this phone
Toast.makeText(context,"Pioneer Contacts+ Updated",Toast.LENGTH_LONG).show();
Log.e("Aditya", "ringing");
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
Toast.makeText(context,"Pioneer Contacts+ Updated",Toast.LENGTH_LONG).show();
Log.e("Aditya", "offhook");
break;
}
}
}
The Log Log.e("Aditya", "offhook"); gets printed before the call gets connected. I want to appear it after the call is disconnected.

Killing and recreating an activity in a service in android development

I am newbie in android development. So I need help .
i would like to display an activity when phone state is ringing, and kill this activity when state is idle or offhook.
So I built a class extends Broadcastreceiver. I call myphonestatelistener class extends PhoneStateListener . Also i create an activity named ringingactivity.
Here is my code (MyPhoneStateListener):
public void onCallStateChanged(int state,String incomingNumber){
switch(state)
{
case TelephonyManager.CALL_STATE_IDLE:
Log.d("DEBUG", "IDLE");
Intent killIntentidle = new Intent();
killIntentidle.setAction("RingingOver") ;
ctx.sendBroadcast(killIntentidle);
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
Log.d("DEBUG", "OFFHOOK");
Intent killIntent = new Intent();
killIntent.setAction("RingingOver") ;
ctx.sendBroadcast(killIntent);
break;
case TelephonyManager.CALL_STATE_RINGING:
Log.d("DEBUG", "RINGING");
Intent dialogIntent = new Intent(ctx , RingingActivity.class) ;
dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
ctx.startActivity(dialogIntent);
break;
}
}
In my tests, i call emulator from telnet and it succesfully display activity when it is ringing. When i accept or decline call, activity is finished . But when i call emulator again, activity could not be recreated again. I cant see it on the screen. What am i doing wrong?
Here is my activity code :
public class RingingActivity extends Activity {
BroadcastReceiver receiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
finish();
}
};
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.ringing_activity);
IntentFilter filter = new IntentFilter();
filter.addAction("RingingOver");
registerReceiver(receiver, filter);
//registerReceiver(receiver,filter) ;
}
public void finish() {
super.finish();
};
}
Thanks for your help!

I suspect the issue is in your MyPhoneStateListener code. The other code look O.K to me.
Some how your PhoneStateListener is not alive next time. Are you able to see "RINGING" logs for second time?

I am not sure as why you need to call Garbage Collector. Please try to fix the root cause as why, activity is not created; sometimes. First analyze the issue by putting logs in your MyPhoneStateListener and RingingActivity. In MyPhoneStateListener, do print the state of RingingActivity activity, before taking any action (Start/kill activity).

Thank you very much for your reply Munish Katoch. I have a solution but not sure if i find the right solution . when I use Garbage Collecter , activity could be seen in screen in each calling.
Here is my code :
public class MyPhoneStateListener extends PhoneStateListener {
Context ctx ;
private boolean iscalling ;
MyPhoneStateListener(Context ctx)
{
this.ctx = ctx ;
}
public void onCallStateChanged(int state,String incomingNumber){
switch(state)
{
case TelephonyManager.CALL_STATE_IDLE:
Log.d("DEBUG", "IDLE");
if(iscalling == true)
{
Intent killIntentidle = new Intent();
killIntentidle.setAction("RingingOver") ;
ctx.sendBroadcast(killIntentidle);
System.gc() ;
iscalling = false ;
}
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
Log.d("DEBUG", "OFFHOOK");
if(iscalling == true)
{
Intent killIntent = new Intent();
killIntent.setAction("RingingOver") ;
ctx.sendBroadcast(killIntent);
System.gc() ;
iscalling = false ;
}
break;
case TelephonyManager.CALL_STATE_RINGING:
Log.d("DEBUG", "RINGING");
iscalling = true ;
Intent dialogIntent = new Intent(ctx , RingingActivity.class) ;
dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
ctx.startActivity(dialogIntent);
System.gc() ;
break;
}
}
}

How can I find out when on android 2.3+ a phone call starts and stops?

I need my app to find out when a phone call is taking place.
It should work on when another phone is being called and also when a call is answered. I just need my app to get notified of exactly when the connection starts and when it stops (not the dialing, ringing, etc.).
Is this somehow possible?

You can use broadcast class to achieve this as below:
public class PhoneStateBroadcastReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
TelephonyManager telephonyManager = (TelephonyManager) context
.getSystemService(Context.TELEPHONY_SERVICE);
telephonyManager.listen(new CustomPhoneStateListener(context),
PhoneStateListener.LISTEN_CALL_STATE);
}
}
class CustomPhoneStateListener extends PhoneStateListener {
// private static final String TAG = "PhoneStateChanged";
Context context; // Context to make Toast if required
public CustomPhoneStateListener(Context context) {
super();
this.context = context;
}
#Override
public void onCallStateChanged(int state, String incomingNumber) {
super.onCallStateChanged(state, incomingNumber);
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
//WHEN PHONE WILL BE IDLE
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
// when Off hook i.e in call
break;
case TelephonyManager.CALL_STATE_RINGING:
// when Ringing
break;
default:
break;
}
}
}
Hope this will help you.