Listen Wired Headset Buttons in Android - android

it's possible to handle the Wired Headset (no bluetooth headset, it is very important) buttons in Android?
For example, if the user press the "Play" button (Receive incoming call), I change a TextView's text (this is a dummy example, not the real mission :) ).
Could somebody post an example code? (if it's possible)
Thanks, IB

Override onKeyDown() in your Activity and watch for the KEYCODE_MEDIA_* family of KeyEvents.

Related

Custom actions on bluetooth headset buttons

I want to add custom actions when a Bluetooth headset / earpiece buttons are pressed.
Apparently for this I need to listen to Media Events using mediaSession.setCallback(callback)function. But for that I need to also play some Media as well, right? I dont want to play any sound. Can I ask MediaSession to play nothing and just receive the media events?
My goal is to override the default Bluetooth headset actions. How can I achieve that? Or any listener that can listen to all Bluetooth buttons.
I think you might be looking for BluetoothHeadset.
There you can register for events as well as vendor specific events which I'm sure you can use along with your logcat to find out exactly what events are being issued when certain buttons are being clicked.
Here is an example as well that might help getting you started: https://github.com/devunwired/accessory-samples/blob/master/BluetoothAudioProxy/src/com/example/BluetoothAudioProxy/HeadsetService.java

intercept Android Bluetooth Camera Shutter in Background Service

I have an Camera Shutter for my Android phone.
It is an bluetooth device which has one button and connect as a bluetooth keyboard to the phone. If button get pressed it sends keycode.enter and volume up.
My question is is it possible to intercept its message in an background service?
So far I read the keyevent is not available in background.
But can I intercept the Bluetooth changes or something else?
Some Ideas?
I would like to give a notification on press of the button. When its running as a background service.
Thanks and best regards
As you already know background services cannot listen for KeyEvents View.OnKeyListener
But you can handle BluetoothSocket events as you would with a standard Socket
I think the Android Bluetooth Overview page is a good starting point
Good luck

Want to capture a bluetooth headset button press

For now, I just want to display a "button pressed!" message when I press any button (volume or the call button) on a paired bluetooth headset (LG HBM-770). I've tried the exact method here (this is the code I'm using): Android - registering a headset button click with BroadcastReceiver with no luck, including the suggested fixes. Hours of google searching only point to that type of code. Bluetooth permission is enabled in the manifest.
If I press the call button now, it seems to never get to my app, instead it brings up the menu that asks you to choose which app to handle it (voice search, google voice, etc). If I hold down the bluetooth call button, my phone calls the last dialed number. If I try to replace the Intent filter type with ACTION_POWER_DISCONNECTED, it works flawlessly when I disconnect power, so it seems that the code from that point on works fine.
It would be nice if I could use no filter at all, and just have a Toast pop up displaying the ID of ANY action received, so I know what exactly the buttons look like to the phone.
Prssing call button on bluetooth headset will trigger certain AT commands(check in Hands Free Spec) to phone which phone will take care, ex: when pressed call button for long duration, headset will send an AT command for call redial and so are the other usecases.
Intents and the methods provided in the link are for the button pressed on the phone.

Android mute button

Some new Android devices have a mute button like Iphone. Its an actual physical button that allows you to mute an incoming call instead of long pressing the volume down hardware control or the pressing the power button.
my question: What is the keycode event for this or how can i capture it so i can get my app to respond to it ?
I think you're looking for KeyEvent.KEYCODE_MUTE. Note that no flagship Android devices have this button, so you are left to the mercy of whether or not the manufacturer's OS actually sends this event or not.

Creating 'middleman' headset button controller in Android

All,
I have searched for an answer to this, but I'm not getting anything exact... It's my first time writing an Android app, so please be gentle :)
I'm pretty bummed about the minimal headset support in Android - unlike e.g. iPhone, it only natively seems to support a single button, so no volume control on headset compatibility. Additionally, if I'm listening to music and a call comes in, the OS pauses the music automatically, but the headset button still functions ONLY as a media button - I can't use it to answer/end the call. If I answer the call via the screen and press the headset button, the music starts again, but the call continues...
I'd like to create a 'middleman' app that can pick up that the headset button has been pressed (via Keyevent.KEYCODE_HEADSETHOOK) and can then determine whether to perform the default ACTION_MEDIA_BUTTON action (toggle play/pause in my chosen media player) or, if there is an incoming call, pause the music and answer the phone (and then, when pressed again, end the call and restart the media player). Perhaps even check for ACTION_MULTIPLE on the headset button to assign different options (ACTION_MEDIA_NEXT, ACTION_MEDIA_PREVIOUS etc.). Perhaps also be able to determine whether different buttons on the headset have been pressed (if the headset is e.g. a fancy iPhone headset) and 'translate' those button presses into the appropriate ACTION_MEDIA_*). This might not be possible if the OS can't tell the difference between different buttons, obviously.
Obviously such an app would have to receive the intent with a high enough priority that it would be able to abort the broadcast before the current media player gets it.
I've been tinkering with creating assorted BroadcastReceiver classes and intent filters etc., but part of the problem is that the bult-in Android emulator that comes with Eclipse doesn't seem to have the ability to simulate a user plugging in the headset and/or subsequently clicking the headset button. Therefore, every time I get somethign that looks promising, I have to put it onto my actual phone and try it out - time-consuming and a hassle.
3 questions then:
Am I missing somethign obvious - is this a real problem and if so, has it already been solved?
If it IS a problem, is it possible to write such a middleman app?
Are there any other Android emulators that can check for headset-related activities?
Thanks,
Rory
i´ve already written exactly this kind of app. Its called like the topic of this thead: Headset Button Controller ;-)
http://www.androidpit.com/en/android/market/apps/app/com.kober.headset/Headset-Button-Controller
Cheers Christoph

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