Re: [android-developers] Re: TelephonyManager PhoneStateListener
So, for example, If I want to create a new register with each incoming call
in my database tableI should use a BroadcastReceiver, and if I want to do
some actions in my app when appears an incoming call I should use a listener
(like save some states or stop a service), is ok?
On the other hand I would like to know if is a good idea create static
variables in a BroadCastReceiver because if I do not do it I can not know
the duration of each answer call.
Thanks for your explanations and help!
2010/9/8 Indicator Veritatis mej1...@yahoo.com
I think you have lost sight of the forest for the trees. The main
difference is that the Listener is just that -- a Listener. If you
don't use the Listener, you have to poll for changes in phone state or
create a Receiver. Often, this is a waste of time. The Listener should
be preferred, unless your needs are VERY simple, so that you can
afford the waste of time implied by polling for state change, or the
extra effort (as in your example) of making a whole Receiver.
After all: except when it introduces nuisance complexity, fewer
application components is better. It is rare that you would want to
create a whole Receiver just for tracking phone state. Why bother,
when you can use a Listener?
Besides: how do you plan to communicate between your Receiver and your
Activities? Generally, communicating with a Listener in the same
Activity or in the hosting process's thread is easier. You didn't even
try this communication in your example.
On Sep 7, 1:09 am, KrcK --- krc...@gmail.com wrote:
Hi all,
I would like to know what are the main differences between
TelephonyManager
and PhoneStateListener, because you can do (more or less) the same things
with both.
For example, you could create an incoming calls register implementing a
broadcastreceiver and using TelephonyManger API or extending
PhoneStateListener class and registering this new listener
throughTelephonyManager .
Case 1 - BroadcastReceiver (TelephonyManager)
public class TestServiceReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
TelephonyManager telephony = (TelephonyManager)
context.getSystemService(Context.TELEPHONY_SERVICE);
int state = telephony.getCallState();
switch(state) {
case TelephonyManager.CALL_STATE_IDLE:
Log.d(TestServiceReceiver, IDLE);
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
Log.d(TestServiceReceiver, OFFHOOK);
break;
case TelephonyManager.CALL_STATE_RINGING:
Log.d(TestServiceReceiver, RINGING);
break;
}
}
}
receiver android:name=.TestServiceReceiver
intent-filter
action android:name=android.intent.action.PHONE_STATE /
/intent-filter
/receiver
uses-permission android:name=android.permission.READ_PHONE_STATE /
Case 2 - PhoneStateListener
public class TestServiceReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
TelephonyManager telephony = (TelephonyManager)
context.getSystemService(Context.TELEPHONY_SERVICE);
TestPhoneStateListener listener =
new TestPhoneStateListener();
telephony.listen(phoneListener,
PhoneStateListener.LISTEN_CALL_STATE);
}
}
public class TestPhoneStateListener extends PhoneStateListener {
public void onCallStateChanged(int state,String incomingNumber){
switch(state) {
case TelephonyManager.CALL_STATE_IDLE:
Log.d(TestPhoneStateListener , IDLE);
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
Log.d(TestPhoneStateListener , OFFHOOK);
break;
case TelephonyManager.CALL_STATE_RINGING:
Log.d(TestPhoneStateListener , RINGING);
break;
}
}
}
receiver android:name=.TestServiceReceiver
intent-filter
action android:name=android.intent.action.PHONE_STATE /
/intent-filter
/receiver
uses-permission android:name=android.permission.READ_PHONE_STATE /
In case 2, when the phone state changed, a new testphonestatelistener
will
be registered (telephony.listen(phoneListener,
PhoneStateListener.LISTEN_CALL_STATE)), but I could solve this problem
convertingthe TestPhoneStateListener into a Singleton and
using PhoneStateListener listener =
TestPhoneStateListener().getInstance()
instead TestPhoneStateListener listener = new TestPhoneStateListener().
So my main question is when I have to use each one and for what purposes.
Thanks and regards!
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Re: [android-developers] Re: TelephonyManager PhoneStateListener
On Wed, Sep 8, 2010 at 5:55 AM, KrcK --- krc...@gmail.com wrote: So, for example, If I want to create a new register with each incoming call in my database tableI should use a BroadcastReceiver, and if I want to do some actions in my app when appears an incoming call I should use a listener (like save some states or stop a service), is ok? I do not completely understand what you wrote here, but I think you have the right idea. On the other hand I would like to know if is a good idea create static variables in a BroadCastReceiver because if I do not do it I can not know the duration of each answer call. The BroadcastReceiver will be destroyed when onReceive() is finished, and so you have no guarantees about the lifetime of any static data members. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in London: http://skillsmatter.com/go/os-mobile-server -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: TelephonyManager PhoneStateListener
The general idea is to create an app like incoming call log. So I have to create a new register in my database when a new call is answered or lost. To do that, I implement a BroadcastReceiver that reacts when the phone state changes. In the onReceive method, I get the TelephonyManager and through this I can get the call state (getCallSate method). The problem here is that I can not know the previous state, so I can not know if an incoming call was answered or not, while if I could get the previous state, I would know it with the states transition. Maybe I could get the information that I need through the Intent (that I get in onReceive method) or through the TelephonyManager, but I do not know if it is possible. Any suggestion to do something like that? Thanks. 2010/9/8 Mark Murphy mmur...@commonsware.com On Wed, Sep 8, 2010 at 5:55 AM, KrcK --- krc...@gmail.com wrote: So, for example, If I want to create a new register with each incoming call in my database tableI should use a BroadcastReceiver, and if I want to do some actions in my app when appears an incoming call I should use a listener (like save some states or stop a service), is ok? I do not completely understand what you wrote here, but I think you have the right idea. On the other hand I would like to know if is a good idea create static variables in a BroadCastReceiver because if I do not do it I can not know the duration of each answer call. The BroadcastReceiver will be destroyed when onReceive() is finished, and so you have no guarantees about the lifetime of any static data members. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in London: http://skillsmatter.com/go/os-mobile-server -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: TelephonyManager PhoneStateListener
On Wed, Sep 8, 2010 at 7:12 AM, KrcK --- krc...@gmail.com wrote: The general idea is to create an app like incoming call log. So I have to create a new register in my database when a new call is answered or lost. Android has a CallLog already. It's called android.provider.CallLog. To do that, I implement a BroadcastReceiver that reacts when the phone state changes. In the onReceive method, I get the TelephonyManager and through this I can get the call state (getCallSate method). There is also an Intent extra. The problem here is that I can not know the previous state, so I can not know if an incoming call was answered or not, while if I could get the previous state, I would know it with the states transition. Why not use the existing CallLog? -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in London: http://skillsmatter.com/go/os-mobile-server -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: TelephonyManager PhoneStateListener
Why not use the existing CallLog? Because I wanted to play with this API and I thougth to do that developing an app like CallLog. On the other hand, the CallLog could be deleted by the user and I want to not allow it in my app. There is also an Intent extra. Which information could I get through that intent? Thanks for your help! 2010/9/8 Mark Murphy mmur...@commonsware.com On Wed, Sep 8, 2010 at 7:12 AM, KrcK --- krc...@gmail.com wrote: The general idea is to create an app like incoming call log. So I have to create a new register in my database when a new call is answered or lost. Android has a CallLog already. It's called android.provider.CallLog. To do that, I implement a BroadcastReceiver that reacts when the phone state changes. In the onReceive method, I get the TelephonyManager and through this I can get the call state (getCallSate method). The problem here is that I can not know the previous state, so I can not know if an incoming call was answered or not, while if I could get the previous state, I would know it with the states transition. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in London: http://skillsmatter.com/go/os-mobile-server -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: TelephonyManager PhoneStateListener
On Wed, Sep 8, 2010 at 7:36 AM, KrcK --- krc...@gmail.com wrote: There is also an Intent extra. Which information could I get through that intent? The EXTRA_STATE extra indicates the new call state. If the new state is RINGING, a second extra EXTRA_INCOMING_NUMBER provides the incoming phone number as a String. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in London: http://skillsmatter.com/go/os-mobile-server -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: TelephonyManager PhoneStateListener
Ok but how could I identify that I answered a call or is lost, and the duration of the call? Because I can know the current state and at what time it is produced but I do not have information about previous states. For example, I answer a call so I will receive OFFHOOK state, but when the call finished I will receive the IDLE state, but I could not know if the previous state was RINGING or OFFHOOK to identify wich kind of call was realized (answer or lost), and in the case of answered call I could not know when started. 2010/9/8 Mark Murphy mmur...@commonsware.com On Wed, Sep 8, 2010 at 7:36 AM, KrcK --- krc...@gmail.com wrote: There is also an Intent extra. Which information could I get through that intent? The EXTRA_STATE extra indicates the new call state. If the new state is RINGING, a second extra EXTRA_INCOMING_NUMBER provides the incoming phone number as a String. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in London: http://skillsmatter.com/go/os-mobile-server -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: TelephonyManager PhoneStateListener
On Wed, Sep 8, 2010 at 8:18 AM, KrcK --- krc...@gmail.com wrote: Ok but how could I identify that I answered a call or is lost, and the duration of the call? Because I can know the current state and at what time it is produced but I do not have information about previous states. The answered/lost data is not part of a public API, AFAIK. Duration of the call is something you can track yourself. For example, I answer a call so I will receive OFFHOOK state, but when the call finished I will receive the IDLE state, but I could not know if the previous state was RINGING or OFFHOOK to identify wich kind of call was realized (answer or lost), and in the case of answered call I could not know when started. Sure you can. You have indicated that you are replicating the CallLog. I would imagine this involves persisting the data. Hence, you already have some file or database or something where you are storing data. Store the in-progress call information using the same techniques. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in London: http://skillsmatter.com/go/os-mobile-server -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: TelephonyManager PhoneStateListener
Ok, I think that now I know a way to do it! Thanks Mark, your help and explanations were very helpful! 2010/9/8 Mark Murphy mmur...@commonsware.com On Wed, Sep 8, 2010 at 8:18 AM, KrcK --- krc...@gmail.com wrote: Ok but how could I identify that I answered a call or is lost, and the duration of the call? Because I can know the current state and at what time it is produced but I do not have information about previous states. The answered/lost data is not part of a public API, AFAIK. Duration of the call is something you can track yourself. For example, I answer a call so I will receive OFFHOOK state, but when the call finished I will receive the IDLE state, but I could not know if the previous state was RINGING or OFFHOOK to identify wich kind of call was realized (answer or lost), and in the case of answered call I could not know when started. Sure you can. You have indicated that you are replicating the CallLog. I would imagine this involves persisting the data. Hence, you already have some file or database or something where you are storing data. Store the in-progress call information using the same techniques. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android Training in London: http://skillsmatter.com/go/os-mobile-server -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: TelephonyManager PhoneStateListener
I think you have lost sight of the forest for the trees. The main
difference is that the Listener is just that -- a Listener. If you
don't use the Listener, you have to poll for changes in phone state or
create a Receiver. Often, this is a waste of time. The Listener should
be preferred, unless your needs are VERY simple, so that you can
afford the waste of time implied by polling for state change, or the
extra effort (as in your example) of making a whole Receiver.
After all: except when it introduces nuisance complexity, fewer
application components is better. It is rare that you would want to
create a whole Receiver just for tracking phone state. Why bother,
when you can use a Listener?
Besides: how do you plan to communicate between your Receiver and your
Activities? Generally, communicating with a Listener in the same
Activity or in the hosting process's thread is easier. You didn't even
try this communication in your example.
On Sep 7, 1:09 am, KrcK --- krc...@gmail.com wrote:
Hi all,
I would like to know what are the main differences between TelephonyManager
and PhoneStateListener, because you can do (more or less) the same things
with both.
For example, you could create an incoming calls register implementing a
broadcastreceiver and using TelephonyManger API or extending
PhoneStateListener class and registering this new listener
throughTelephonyManager .
Case 1 - BroadcastReceiver (TelephonyManager)
public class TestServiceReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
TelephonyManager telephony = (TelephonyManager)
context.getSystemService(Context.TELEPHONY_SERVICE);
int state = telephony.getCallState();
switch(state) {
case TelephonyManager.CALL_STATE_IDLE:
Log.d(TestServiceReceiver, IDLE);
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
Log.d(TestServiceReceiver, OFFHOOK);
break;
case TelephonyManager.CALL_STATE_RINGING:
Log.d(TestServiceReceiver, RINGING);
break;
}
}
}
receiver android:name=.TestServiceReceiver
intent-filter
action android:name=android.intent.action.PHONE_STATE /
/intent-filter
/receiver
uses-permission android:name=android.permission.READ_PHONE_STATE /
Case 2 - PhoneStateListener
public class TestServiceReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
TelephonyManager telephony = (TelephonyManager)
context.getSystemService(Context.TELEPHONY_SERVICE);
TestPhoneStateListener listener =
new TestPhoneStateListener();
telephony.listen(phoneListener,
PhoneStateListener.LISTEN_CALL_STATE);
}
}
public class TestPhoneStateListener extends PhoneStateListener {
public void onCallStateChanged(int state,String incomingNumber){
switch(state) {
case TelephonyManager.CALL_STATE_IDLE:
Log.d(TestPhoneStateListener , IDLE);
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
Log.d(TestPhoneStateListener , OFFHOOK);
break;
case TelephonyManager.CALL_STATE_RINGING:
Log.d(TestPhoneStateListener , RINGING);
break;
}
}
}
receiver android:name=.TestServiceReceiver
intent-filter
action android:name=android.intent.action.PHONE_STATE /
/intent-filter
/receiver
uses-permission android:name=android.permission.READ_PHONE_STATE /
In case 2, when the phone state changed, a new testphonestatelistener will
be registered (telephony.listen(phoneListener,
PhoneStateListener.LISTEN_CALL_STATE)), but I could solve this problem
convertingthe TestPhoneStateListener into a Singleton and
using PhoneStateListener listener = TestPhoneStateListener().getInstance()
instead TestPhoneStateListener listener = new TestPhoneStateListener().
So my main question is when I have to use each one and for what purposes.
Thanks and regards!
--
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