Thank you very much, Peli. I got it. My mistake was that I thought SCREEN_ON/SCREEN_OFF events will be broadcasted when the screen turns dim automatically. It's my misunderstanding, now I know it will be broadcasted only when (on emulator) the red phone button is pressed.
Thanks a lot. Jiaoni On Jul 21, 12:36 am, Peli <[email protected]> wrote: > In your main activity, you have to write something like > > BroadcastReceiver mReceiver = new BroadcastReceiver() { > @Override > public void onReceive(Context context, Intent intent) { > Log.v(TAG, "onReceive()"); > } > }; > > @Override > protected void onResume() { > super.onResume(); > IntentFilter filter = new IntentFilter > (Intent.ACTION_SCREEN_ON); > registerReceiver(mReceiver, filter); > } > > @Override > protected void onPause() { > super.onPause(); > unregisterReceiver(mReceiver); > } > > Peliwww.openintents.org > > On Jul 20, 5:33 pm, jiaoni <[email protected]> wrote: > > > I tried this in my activity, but still cannot receive event: > > > MessageReceiver receiver = new MessageReceiver(); > > IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON); > > registerReceiver(receiver, filter); > > > I feel frustrated and don't know why... > > > On Jul 20, 9:58 pm, JP <[email protected]> wrote: > > > > I've double checked my code and found I'm doing this slightly > > > differently, although the method above should also work. > > > > Strike "Register" broadcast receiver in the manifest - this seems to > > > be meerly a declaration of the receiver. No intent filters; I check > > > the specific event types _ON/_OFF in the receiver's onReceive() > > > method. > > > The key: I register the BroadcastReceiver manually, using > > > Context.registerReceiver(BroadcastReceiver receiver, IntentFilter > > > filter) > > > > On Jul 19, 8:22 pm, jiaoni <[email protected]> wrote: > > > > > Thanks, JP. I have added following lines in AndroidManifest.xml, but > > > > still cannot receive any message in my BroadcastReceiver's onReceive() > > > > method. Is there anything I did wrong, or may I need some permission > > > > to receiveSCREEN_ON/SCREEN_OFF message? Please help. > > > > > <receiver android:name=".MessageReceiver" android:process=":remote"> > > > > <intent-filter> > > > > <action > > > > android:name="android.intent.action.SCREEN_ON"></action> > > > > <action > > > > android:name="android.intent.action.SCREEN_OFF"></action> > > > > </intent-filter> > > > > </receiver> > > > > > On Jul 18, 7:02 am, JP <[email protected]> wrote: > > > > > > 1. You need to create a subclass of BroadcastReceiver, override > > > > > onReceive(Context context, Intent intent). > > > > > In onReceive(), extract action from intent and catch ACTION_SCREEN_ON > > > > > and ACTION_SCREEN_OFF > > > > > 2. Next you need to register the BroadcastReceiver in > > > > > AndroidManifest.xml > > > > > > On Jul 17, 12:02 am, jiaoni <[email protected]> wrote: > > > > > > > How can I catchSCREEN_ON/SCREEN_OFF broadcasts? > > > > > > > I have tried for hours, but failed. Please help. > > > > > > > Thanks a lot. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
