cordova - Ionic - How To Check Bluetooth State Change -


currently i'm using cordova.plugins.diagnostic check whether bluetooth on or off. if bluetooth off prompt asking user turn on , 'continue button' disabled. after on, how can detect on , make continue button enable.

below code how detect bluetooth enable/disable:

cordova.plugins.diagnostic.isbluetoothenabled(function(enabled){     console.log("bluetooth " + (enabled ? "enabled" : "disabled")); }, function(error){     console.error("the following error occurred: "+error); });

then, code how check changes made bluetooth state:

$ionicplatform.ready(function() {      cordova.plugins.diagnostic.registerbluetoothstatechangehandler(function(state ){      if(state === cordova.plugins.diagnostic.bluetoothstate.powered_on){         alert("bluetooth able connect");         $scope.bluetoothisenabled = true;     }      else if(state === cordova.plugins.diagnostic.bluetoothstate.powered_off){        alert("bluetooth off");        $scope.bluetoothisenabled = false;    } });

})

but, if test off on or on off, there no alert appear. seems handler not call back.

cordova.plugins.diagnostic.isbluetoothenabled(function(enabled){     if (enabled) {         // bluetooth on     } else {         // bluetooth off     } }, function(error){     console.error("the following error occurred: "+error); });  cordova.plugins.diagnostic.setbluetoothstate(function(){     console.log("bluetooth enabled"); }, function(error){     console.error("the following error occurred: "+error); }, true);

html makeup

<button class="button" ng-disabled="!bluetoothisenabled" on-tap="yourfunction($event)"></button>

bluetooth state listen

cordova.plugins.diagnostic.registerbluetoothstatechangehandler(function(state){     // "unknown", "resetting", "unsupported", "unauthorized", "powered_off", "powered_on"     if (state == "powered_on") {         $scope.bluetoothisenabled = true;     } else {         $scope.bluetoothisenabled = false;     } });

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