Register to BroadcastReceiver

[Gorka]

Hi,

I am trying to register to a BroadcastReceiver in order to obtain the
results of a Bluetooth Inquiry. The problem I have is, at least as I
know, is not possible to use the registerService function if my class
does not extend of Activity or Context.

The definition of my class is like this:

public class BluetoothDiscovery extends Discovery implements Runnable

And I create my broadcast receiver like this:

mReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
// When discovery finds a device
if (BluetoothDevice.ACTION_FOUND.equals(action)) {

}
}
};

So, when I try to register the service I do:

IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mReceiver, new
IntentFilter(BluetoothDevice.ACTION_FOUND));

I have an error in this last sentence because the class does not know
what registerReceiver means.

What can I do¿¿¿

[rk]

have your tried the other way of registering through XML?

Thanks
rk

[Gorka]

No, I don't. I didn't even know that was possible, I am new to Android
development

[Rahony Goulart Ricardo]

Try to keep the instance of his activity (at boot) into a static
variable.
And use this reference to call the method registerReceiver

[Dianne Hackborn]

On Thu, May 27, 2010 at 8:05 AM, Rahony Goulart Ricardo <ron...@gmail.com> wrote:

Try to keep the instance of his activity (at boot) into a static
variable.

Don't do this, you will leak the activity.  If you need a context not associated with a particular activity or service (that is global to the process), use Context.getApplicationContext().

--
Dianne Hackborn
Android framework engineer
hac...@android.com

Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails.  All such questions should be posted on public forums, where I and others can see and answer them.

[Gorka]

Hi,

Sorry, I have not been able to connect for some days. I tried to add
your suggestion but an error appears:
"cannot make a static reference to the non-static method
getApplicationContext() from the type Context"

This is the code I am using:

IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);

Context.getApplicationContext().registerReceiver(mReceiver, new
IntentFilter(BluetoothDevice.ACTION_FOUND));

Bye, and thank you

On 31 mayo, 20:54, Dianne Hackborn <hack...@android.com> wrote:
> On Thu, May 27, 2010 at 8:05 AM, Rahony Goulart Ricardo

> <rony...@gmail.com>wrote:

>
> > Try to keep the instance of his activity (at boot) into a static
> > variable.
>
> Don't do this, you will leak the activity.  If you need a context not
> associated with a particular activity or service (that is global to the
> process), use Context.getApplicationContext().
>
> --
> Dianne Hackborn
> Android framework engineer

> hack...@android.com

[Dianne Hackborn]

You need to call this on an existing Context object.

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--
Dianne Hackborn
Android framework engineer

hac...@android.com

[Gorka]

Hi,

Thank you all for your help. My code works now.

Bye.

> > android-platfo...@googlegroups.com<android-platform%2Bunsu...@googlegroups.com>
> > .

> > For more options, visit this group at
> >http://groups.google.com/group/android-platform?hl=en.
>
> --
> Dianne Hackborn
> Android framework engineer