PROVIDER_CHANGED is usually -only- used for updating the new mail status bar
icon.  It is not intended for generally monitoring a provider.

Also the Gmail provider schema is not public (not even part of the platform
at all), so you can't write code against it and expect it to continue to
work in the future.

On Mon, Jun 22, 2009 at 12:11 AM, kkruups <kkru...@gmail.com> wrote:

>
> Hi All,
>
> I have been working on BroadcastReceiver code to capture GMAIL events
> and try to extract data to create an email event log.
>
> Although the registration of the BroadcastReceiver using
> Intent.PROVIDER_CHANGED for gmail appears to be correctly formed and
> no exceptions are generated.  I have my doubts whether the receiver is
> able to capture gmail event for Intent.PROVIDER_CHANGED, generated
> when unread email is available, since code in my BroadcastReceiver is
> never activated.   Upon reading the BroadcastReciever API docs (see
> excerpt below) I see that BroadcastReceivers are not designed to
> capture intents used with startActivity() and that BroadcastReceivers
> only receive intents generated from a sendBroadcast() method call.
> For your reference see my code snippets below.
>
> Is the BroadcastReceiver mechanism not the appropriate method to
> capture email/gmail/sms events?
>
>
>
> BroadcastReceiver code is the following:
>
> public class EmailReceiver extends BroadcastReceiver {
>       /**
>        *
>        */
>
>       String TAG= "MY_TAG:RECEIVER";
>
>       @Override
>       public void onReceive(Context context, Intent intent) {
>               //
>               Log.i(TAG, "Action=" + intent.getAction());
>             if (Intent.ACTION_PROVIDER_CHANGED.equals
> (intent.getAction
> ())) {
>                 Uri dataURI= intent.getData();
>                 String dataURIPath=dataURI.getPath();
>                 Log.i(TAG, dataURIPath);
>              }
>       }
> }
>
>
> BroadcastReceiver code registration for gmail is the following:
> //
>
> @override
> public void onCreate(Bundle b){
> ....
>
> EmailReceiver myMailReceiver = new EmailReceiver();
>
> ......
>
> }
>
>
> @Override
> public void onResume(){
>       super.onResume();
>
>        try{
>              IntentFilter mailFilter = new IntentFilter
> ( Intent.ACTION_PROVIDER_CHANGED, "content://gmail-ls/unread/^i");
>          //     IntentFilter mailFilter = new IntentFilter
> ( Intent.ACTION_PROVIDER_CHANGED, "gmail-ls");
>           registerReceiver( myMailReceiver, mailFilter);
>           Log.i(myMailReceiver.TAG, "MailReceiver registered");
>     }catch(Exception e){
>       Log.e(myMailReceiver.TAG, "Intent Filter malformed");
>     }
>
> }
>
> Excerpt from BroadcastReceiver Doc:
>
> Base class for code that will receive intents sent by sendBroadcast
> ().
> ........
> ........
>
> Note that, although the Intent class is used for sending and receiving
> these broadcasts, the Intent broadcast mechanism here is completely
> separate from Intents that are used to start Activities with
> Context.startActivity(). There is no way for a BroadcastReceiver to
> see or capture Intents used with startActivity(); likewise, when you
> broadcast an Intent, you will never find or start an Activity. These
> two operations are semantically very different: starting an Activity
> with an Intent is a foreground operation that modifies what the user
> is currently interacting with; broadcasting an Intent is a background
> operation that the user is not normally aware of.
>
> .........
>
> Regards,
>
> KK
> >
>


-- 
Dianne Hackborn
Android framework engineer
hack...@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.

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