Develop Bugs

[Q] AVRCP priority

Not sure the best place to ask this...when you've got your epic connected to a AVRCP-capable device (like a bluetooth headset with a play/pause button), the play button is capable of having the epic launch an app in order to play something is nothing is open.
My question is, what, in the Epic's software, determines the priority of which app gets launched, out of all the various playback apps you might have?
Some background: I mostly use my BT headphones for podcast listening on the go. I set up Tasker to launch Google Listen on phone startup (and then immediately go back to desktop) so that the app is in recent apps list. Then, if I put the play button on my headphones, Listen will launch and my podcast will start playing. If I want to switch over to pandora, I manually close Listen (using the back button) and launch pandora. Now my headphones control the play/pause on Pandora without trying to launch listen instead, which is what they might do if I had both apps open.
The problem comes in that I installed the Google Music beta app (this is different from the Music app that comes with the Epic, for clarity) so that I could access my music from the cloud. This app seems to take priority over all others. If I launch it, even once, it will always bypass Listen from then on, even if I manually close, it, kill the service, and dump the phone's ram. The only way I can switch the phone back to Listen app mode is to manually freeze Music with Titanium backup.
This is really annoying.
So, yeah, my question is, what on the phone makes it determine that launching the Music app is preferable to resuming the Listen app?

I find this extremely annoying too (because I have to pull over to fix it) so I only have miui player installed, not quite the answer but this sounds interesting would like t know as well
Sent from my SPH-D700 using XDA Premium App

AVRCP bluetooth not working?

Audio/Video Remote Control Profile (AVRCP) is not working on any app. i tried it with my headphones to play/pause and skip a song and nothing. same thing on my car. so its definitely the phone causing the problem. anyone else?

Same here - tried two different devices. No play / pause.

OK, it looks like Google Music has a strangle hold on AVRCP. It works in that app (which I don't use) and nowhere else.
This is one of the reasons I ditched Google Music on my last device. The minute you install it, no other app works with AVRCP.
I tried disabling it in Applications (I am running stock w/o unlock or root ATM), but that does no good. Also tried re-enabling and FC, but again, no joy.
Hopefully someone more skilled that I has a suggestion...
EDIT - there don't appear to be any settings in Google Music to turn off their control. Tried a couple apps in the market like Headset Interceptor, but they did not help.

no google music isnt the problem. it doesnt work on any app. plus on my old phone google music didnt cause any problems and worked just fine.

qman66 said:
no google music isnt the problem. it doesnt work on any app. plus on my old phone google music didnt cause any problems and worked just fine.
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Click to collapse
Hmm... I guess we have two different problems.
On my GNEX, AVRCP (I only care about playing and pausing via BT) works on Google Music, and nothing else.
On my old DINC, I had AVRCP working until I installed Google Music (only change I made), at which point all my other apps' AVRCP capabilities stopped working (Audible, Subsonic, etc.). I then uninstalled Google Music (again, the only change I made), and my AVRCP started working again.
To me, that experience makes it pretty clear that Google Music was causing me grief on my old device, and is mysteriously the only thing that works with this feature on my new device.
Like I said, maybe you have something else going on.

so noone else has this problem?

Try Power Amp
The Power Amp player seems to work on my Senheisser MM450 BT Headphones

I have the same issue.
AVRCP on my bluetooth headset (Plantronics BackBeat 903+) stopped working when I started using Galaxy Nexus.
On my old phone I was using BeyondPod and Player Pro with my headset and play/pause worked from the headset. Now, I cannot stop or play music in those apps.
I can confirm that this has something to do with Google Music.
I found that if I start Google Music then AVRCP works with the headset. If then I go and start Player Pro, the AVRCP stops working, and pushing play/pause button does nothing. Then, when I go back to Goolge Music, everything works fine once again.
So existence of Google Music somehow hampers the ability of other apps to claim bluetooth headset remote control fully. They claim it partially, because Google Music is not starting music on pushing play button, but the player does not start music as well.

Spotify on Nexus S stopped responding to BT Play/Pause after ICS update
I am encountering the same issue after updating my Nexus S to Ice Cream Sandwich via an OTA update.
Using Seinnheser MM450s, I was previously able to fully control Spotify (Play/Pause/Next/Previous). However since updating to ICS, only Next/Previous work. The main button (Play/Pause) has no effect.
However, when I launch the factory Music app, it responds to all controls.
To try and 'debug' the issue, I downloaded a trial of "Headset Droid" app, and used its BlueTooth command monitor debugging facility. As expected, it correctly intercepted and confirmed the Next/Previous button pushes, however failed to acknowledge the Play/Pause functionality.
Has a bug report been filed regarding this issue? Can anyone suggest a workaround?
Thanks - Anj

I have the same issue. Previously - my Nexus One running stock/unrooted 2.3.6 worked perfectly for play/pause/next/previous/start|end call on cheap Chinese Bluetooth headphones. Been using them for weeks with Subsonic, flawlessly.
Moved to Galaxy Nexus, 4.0.1 (apparently .2 hasn't rolled for my geography yet) - same headphones, only next/previous/start|end call work. Play/Pause does nothing in either state, whether I am in Subsonic or not. Haven't tried Music yet as I never use it (lets face it, its of limited value outside the US!).
But I did notice that if I press and hold for quite a while, the play/pause button, it seems to stop the music in some way that isn't quite pause, but nothing else works after that, you have to manually restart it from the app.
(anecdotally, I have the unsubstantiated feeling that some/all system sounds are not piped to the headphones as effectively as Gingerbread. But I haven't tested this yet)
Finally, I note I have occasionally used these headphones on my Honeycomb tablet - Asus Transformer, 3.2.1(?) and it behaves the same as the Nexus One, not the Galaxy Nexus so this is definitely an ICS issue.

I have reported this fault on code.google.com/p/android/issues/detail?id=23172 - please add to the comments so that it gathers momentum as an important issue.

I hate to post a me-too, but me too :-(
I'm using doggcatcher on a rooted verizon galaxy nexus on the stock 4.0.2 firmware. My headphones are a sony MW600. Play/pause/ffw/rew don't work in doggcatcher.
I started up google music and went through the setup wizard. the AVRCP buttons work for google music only. Enabling/disabling doggcatcher's "bind to headset forcefully" option has no effect.
I used Titanium Backup to make a backup of Google Music, and then uninstall it. Now Doggcatcher responds to AVRCP button-presses. Anyone else want to give it a try?

Thanks daoist,
Can you confirm that you have to be root to use that particular functionality of Titanium Backup?
Thanks again - Anj

Interesting. Now it seems like google music and Pandora both respond to it. But google listen does not.
Sent from my Galaxy Nexus using xda premium

I'm having the same issues with my Galaxy Nexus as well. I starred the link mentioned above. I'm using a Plantronics Voyager Pro HD and none of my music controls work. I also can't tap the call button to engage a voice search or anything. I hope Google fixes this sometime soon...This makes my headset quite a bit less useful...

I can confirm the issue on my Gnex LTE running 4.0.2. Google Music works fine. I don't know why, but Doggcatcher is also working fine (Play/Pause works). I noticed that there is a setting in Doggcatcher for "bind to headset" and "start application" - both of which are checked on mine, so maybe that's why it's working.
However, both Pandora and Mog are not working with Play/Pause and there are no headset options in the app settings. So either 1) apps just need to be updated for ICS, or 2) something is amiss in ICS that prevents other apps from using the headset controls. Most likely the latter...

Apparently the developers of Media Button Router have "fixed" this issue.
See here: code.google.com/p/media-button-router/issues/detail?id=10#c5
Download from here: market.android.com/details?id=com.harleensahni.android.mbr&hl=en
I can confirm that after installing Media Button Router and configuring to send all BT commands to Spotify - I no longer have the Play/Pause problem.
Thanks - Anj

qman66 said:
Audio/Video Remote Control Profile (AVRCP) is not working on any app. i tried it with my headphones to play/pause and skip a song and nothing. same thing on my car. so its definitely the phone causing the problem. anyone else?
Click to expand...
Click to collapse
I use beyondpod for podcasts - and avrcp works fine.. worth mentioning that I'm not using google music.
-m

anj747 said:
Apparently the developers of Media Button Router have "fixed" this issue.
See here: code.google.com/p/media-button-router/issues/detail?id=10#c5
Download from here: market.android.com/details?id=com.harleensahni.android.mbr&hl=en
I can confirm that after installing Media Button Router and configuring to send all BT commands to Spotify - I no longer have the Play/Pause problem.
Thanks - Anj
Click to expand...
Click to collapse
that works but EVERY time i hit the play/pause button on my mw600 the prompt comes up, freaking annoying, can we have the app that just does the play pause, i dont wnat it to come up asking me what to play pause.

Sorry to revive but i've got an in-car bluetooth and the AVRCP doesn't seem to work with ICS either.. the first time I click play and the first time I click "next track" on the car after the phone connects, the phone will respond correctly, but will not respond to any subsequent buttons until I press the power button on my phone... It's almost like ICS is sitting on all the commands sent to it's AVRCP like a stack, and when I power the phone (either on or into standby), the next click is executed (without any clicks on the car at the time)..
eg: if I hit "Next" twice and "Rew" once on my car, then every time I tap the power button (between on and sleep), it would execute Next, Next and Rew in that order. I have a lock pattern on my phone too, not sure if that's hampering the AVRCP commands either... only way to get out of this is to turn the BT off on the GNEX then on again.. but it does the same thing after the first succesful AVRCP command again.

[Q] Control music player with screen off

I discovered - by accident - that if you long-press the volume down button with the phone asleep, it starts the default audio player. This is actually a little annoying as I've managed to start it several times without meaning to, and I don't use the default music player anyway.
Is there any way to disable it? I've searched but to no avail. I can see how it might be useful, but I'd like the option to choose whether it does it or not.
I'm running ARHD.

U can disable it:
Manage Apps -> All Apps -> Tip Music & Music Optimizing & Music Widget -> Tip Stop & Disable

Thanks for your reply forsaked, but that hasn't solved it...

Funkmeisterdude said:
I discovered - by accident - that if you long-press the volume down button with the phone asleep, it starts the default audio player. This is actually a little annoying as I've managed to start it several times without meaning to, and I don't use the default music player anyway.
Is there any way to disable it? I've searched but to no avail. I can see how it might be useful, but I'd like the option to choose whether it does it or not.
I'm running ARHD.
Click to expand...
Click to collapse
Have you got installed the leedroid tweaks. It was an option in that. You can disable or remap the volume down button to previous track as well.
Sent from my HTC One X using xda premium

Funkmeisterdude said:
Thanks for your reply forsaked, but that hasn't solved it...
Click to expand...
Click to collapse
Wondering, cause i solved it that way!
And u disabled all 3 Applications?

I had same problem on Leedroid.
I had a tweak enabled that i didn't need.
Leedroid Tweaks -> Lockscreen -> Media Control and untick it

FTR, I'm on ARHD 5.1.1...
The only way to stop it was to completely disable the built-in Music app. I searched through the app for options, but there was nowhere to disable anything to do with the lock-screen media control. The number of times I've had music randomly start on my was unreal it was annoying.
I usually use ³ for music on my phone anyway, but the Music app had a nice feature where I could play music stored on my phone via my PC over WiFi. I guess if I want to do that, I can always re-enable the Music app. Seems strange there's no way to turn it off.

Just discovered this thread. This is one really annoying behavior. Has anyone by now discovered another way to disable this?
Disabling the music app is working, but it also disables support for Beats Audio.

I have the music app disabled but it hasn't stopped Beats Audio working:

Uhm, okay, now it's working here as well... Don't know what I did when the beats icon suddenly disappeared. :S
Sent from my HTC One X using XDA

My headset remote buttons are no longer working

Nothing happens when I press the play/pause button, or the skip to next track, or the skip to previous track button. I tried this with Winamp playing in the foreground. I'm not sure if this is possible with Winamp. So I also tried it with MortPlayer Music which is what I have used previously and I know it supports this feature. But still nothing. Usually Mort will start playing as soon as I press the play button on the remote, even when it's not in the foreground or not even launched. But now... just silence.
I have SuperNova ROM with Data2SD and Android 2.3.3. I have S-OFF, root, and stock HBOOT.
Is there some service or process missing? Or not running in the background? What else could it be?
Just for clarification, the headset is working, I mean I can hear the music, it's just that there is no way to use the buttons to control it (except through the app).
Edit:
Also, is there something like a menu option or control panel, some means of controlling which app gets to use the headset buttons? Or a way of setting which app is the default music player? Or which one is the default browser for instance? Is this possible in Android? Some centralized place where you can set all of these things, a little bit like Windows style?

not tried it myself, but does this app work? it's a trial, so you can see if it works, and have to pay later. or might be other apps which are free and work, have a browse
(as an aside some roms allow long pressing of volume buttons to skip tracks, but i believe this has to be the stock music app, and probably has to be on the system partition)

Jack is the culprit!
I have found the culprit. It's my headset jack! You can check out the picture below.
I think some leads have broken inside the sleeve at the jack. That's why it bulges out like that, you can see that it's a little thick at that point. If I press and hold the cable at this point the remote control buttons work again, more or less, it glitches sometimes. If I let go it stops working, or it works sometimes if I move the cable around like when having the phone in a pocket.
For the record, this is the original HTC headset, I think it's RC-E160. The earbuds are still working though. So it's pretty much just a headphone right now. I haven't used it very much because, almost nothing at all, because of the poor sound quality. I started using it only like three months ago as as a temporary replacement when my Sony got broken. Now these are broken too. My Sony lasted much longer.
I still wonder how you can control which app gets priority and things like that, when you have like two or three different apps that respond to headset buttons. Is there no option in Android from where you can control this? Is your only option to uninstall the apps you don't want to be interfering? This doesn't seem well thought through.

prevent app from automatically closing by task manager in kitkat

I listen to music via Bluetooth streaming in my car using the factory MUSIC app. I'd like to be able to get into the car, turn on the BT streaming mode on my car audio and automatically begin playing music. However, the factory task manager automatically closes the MUSIC app after I get out of the car and I have to load it manually each time.
Being that everyone recommends that with KitKat one shouldn't install a task killer/manager other than what's from the factory....how can this be done?
Is there any way to put the music on an exclusion list?
Thanks in advance.

If understand correctly, you want the music to continue playing on your phone's speaker when disconnected from your car audio?

serio22 said:
If understand correctly, you want the music to continue playing on your phone's speaker when disconnected from your car audio?
Click to expand...
Click to collapse
negative, the music will pause automatically when the music app detects a break in bluetooth connection when I turn off the car. What I need is for the MUSIC app itself to continue running in the background (it's not a big resource or battery hog) for when I get into my car for a seamless transition back to playing music.... because once the phone shuts down the app I need to load it again...a PITA.
Thanks.

KEVIN88GT said:
negative, the music will pause automatically when the music app detects a break in bluetooth connection when I turn off the car. What I need is for the MUSIC app itself to continue running in the background (it's not a big resource or battery hog) for when I get into my car for a seamless transition back to playing music.... because once the phone shuts down the app I need to load it again...a PITA.
Thanks.
Click to expand...
Click to collapse
It will continue running in the background, this isn't really a task killer problem but more of an app thing.. For example, I use play music and it resumes playing once I connect to Bluetooth again even if I kill it myself.. I would check the settings if you haven't already and see if there's is a setting for it, I've seen other apps with settings like that, but don't know about the stock music app

it is not in fact running in the background. No such option in setting either. Anyone know of any app that could make it be ignored by the default task manager?

You can do it with xposed if interested

The head unit in your car may have something to do with it.
Factory? Aftermarket?
I have a Kenwood w/7in touch screen and if my BT on phone is enabled as soon as the Kenwood starts up whatever app was running before will start playing automatically, Samsung music app, Amazon music app..
If Milk music or Pandora I have to launch app.
Pp.

there are a few apps on the market with that name.... also do I need root access? As far as the head unit it's a factory stereo Infiniti q50

KEVIN88GT said:
there are a few apps on the market with that name....
Click to expand...
Click to collapse
It's not on the market and you need root access.. If you are interested do a quick search for xposed on Google and go to the one here on XDA, read about it on the thread and how to use it, install it, open it, and search for a module called app settings, in there you have an option to always keep in memory for whatever app you want so just select stock player. Keeping the music player running may not even be the solution, but it is a possibility.. As the previous poster stated, there are apps that just lack autoplay feature.. It is also possible that some other music app or app that uses Bluetooth may conflict with it, preventing it from auto playing