cordova - EXTRA_PREVIOUS_SCAN_MODE always returns an error for Android Bluetooth -


i'm using following code return object cordova when device's bluetooth's scan mode changes (i.e. discoverable/not discoverable).

cordova.getactivity().getapplicationcontext().registerreceiver(new broadcastreceiver(){     @override     public void onreceive(context c,intent intent){         jsonobject json=new jsonobject();         try{             json.put("current",intent.getintextra(bluetoothadapter.extra_scan_mode,bluetoothadapter.error));             json.put("previous",intent.getintextra(bluetoothadapter.extra_previous_scan_mode,bluetoothadapter.error));         }catch(jsonexception e){         }         pluginresult result=new pluginresult(pluginresult.status.ok,json);         result.setkeepcallback(true);         discoverablecallback.sendpluginresult(result); // discoverablecallback callbackcontext     } },new intentfilter(bluetoothadapter.action_scan_mode_changed));

however, intent.getintextra(bluetoothadapter.extra_previous_scan_mode,bluetoothadapter.error) bluetoothadapter.error. tried setting discoverability on , off several times consecutively , it's bluetoothadapter.error. how make return previous scan mode?

from see in aosp source , extra_previous_scan_modeis never being used. guess documentation google wrong in case . if search here results in no references in whole source code


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