keycode_headsethook "not working"

dkovacev said:

Hi!

I've made a simple app that needs to catch mic button click from wired headset, and I tried to implement that via simple onKeyDown function in activity, and also with broadcastreciever, but app doesn't react on click. Or to be precise it doesn't react on some generic android phone with android 4.2, while working perfecty fine on ZTE Blade III. It does however react on other keys like Volume Up/Down. I was thinkg that maybe builtin apps have even greater priorty then my app, but don't know hot to check that, and more importantly how to prevent that, (priority of 100000 didin't help) . Also to mention that phone is registering button for recieve call, so it doesn't look like it's a hw problem.

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dkovacev said:

Thanks for the interest, code is simple

Code:

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
    	
    	Toast.makeText( this, "BUTTON pressed!", Toast.LENGTH_SHORT).show(); 
    	
    	String myStr = ""; 
        if ((keyCode == KeyEvent.ACTION_DOWN)){
        	Toast.makeText( this, "BUTTON down", Toast.LENGTH_SHORT).show(); 
        }

        if ((keyCode == KeyEvent.KEYCODE_HEADSETHOOK)){
        	Toast.makeText( this, "BUTTON Headset key Down!", Toast.LENGTH_SHORT).show(); 
        }

        if ((keyCode == KeyEvent.KEYCODE_VOLUME_DOWN)){
        	Toast.makeText( this, "BUTTON volume Down!", Toast.LENGTH_SHORT).show(); 
        }
        ...

As you can guess, nothing happens even before 'if statements', VOLUME_UP works fine, same thing happens in onKeyUp function.
I also tried with broadcast recievers, copy/pasted sample from SDK (Random Music Player) that works with Broadcast Recievers, still nothing.

Button itself, works for recieving calls, but nowhere else, I read somewhere that with JellyBean Google introduced Media control with mic button for play/pause functionality in music player, but it won't work for me, when I press buttton during playback, volume is up, while holding, and that's it.

And still, same code works perfectly fine on 4.0.4, maybe it's something with this particular 4.2.2 that prevents me from capturing key, but don't know how and where to look about it

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