Re: [android-developers] Broadcast Receiver registering Location Listener problem

2011-01-05 Thread Mark Murphy
On Wed, Jan 5, 2011 at 5:13 PM, Raj rnmalho...@gmail.com wrote:
 I am trying to write a simple receiver that will receive the
 BOOT_COMPLETED broadcast, and in turn register a location change
 listener. I know the receiver is transient, and has a short lifespan.
 Once the receiver dies, will my listener still continue to be
 registered, or do I have to write a (perpetual) service to register
 the listener?

Ideally, neither. If all goes well, on Friday I'll be releasing a
LocationPoller service that will handle this scenario, though I don't
recommend trying to get locations already at boot time (wait a couple
of minutes via AlarmManager).

 public class LocationReceiver extends BroadcastReceiver {

       �...@override
        public void onReceive(Context context, Intent intent) {
                Log.d(PreciseLocator, ===In Receiver, starting listener);
                LocationManager lm =
 (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
                lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L,
 500.0f, new DroidLocationListener());

        }
 ..

This will leak the listener, until such time as Android gets rid of or
recycles your process. This is not a good strategy.

 Can I have just a receiver,
 without an activity in the manifest?

Yes, though Android Market users tend to greatly dislike this.

-- 
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy

_The Busy Coder's Guide to *Advanced* Android Development_ Version 1.9
Available!

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Re: [android-developers] Broadcast Receiver registering Location Listener problem

2011-01-05 Thread Raj
Mark,

Once again, thanks for an informative response. I will try the 
AlarmManager route, while I eagerly await your service. On the manifest 
question, everytime I load my application on the emulator, I get a No 
Launcher activity found! on the console. Is this normal?

Thanks again.

Best Regards,

Raj.

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Re: [android-developers] Broadcast Receiver registering Location Listener problem

2011-01-05 Thread Mark Murphy
On Wed, Jan 5, 2011 at 5:25 PM, Raj rnmalho...@gmail.com wrote:
     Once again, thanks for an informative response. I will try the
 AlarmManager route, while I eagerly await your service.

Keep tabs on my blog.

 On the manifest
 question, everytime I load my application on the emulator, I get a No
 Launcher activity found! on the console. Is this normal?

If you don't have a launcher activity, then yes.

-- 
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy

_The Busy Coder's Guide to *Advanced* Android Development_ Version 1.9
Available!

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