typescript - Ionic 2 / Angular 2 | Diagnostics registerBluetoothStateChangeHandler -> update view -


i'm trying use diagnostics plugin in ionic 2 application. i'm trying listen bluetooth state changes. based on change want update view.

the handler working fine, issue variables updated in function aren't updated in view.

i can't figure out cause of problem, i've been searching , found answers observables, @input(), , many more haven't been able solve it.

also documentation of diagnostics plugin (https://github.com/dpa99c/cordova-diagnostic-plugin) minimal. haven't been able make of that.

an example of code:

import { diagnostic } 'ionic-native'; import { platform } 'ionic-angular';  export class testpage {     @input()     bluetoothenabled: boolean = false;      constructor(public platform: platform) {          this.platform = platform;          this.platform.ready().then(() => {              diagnostic.registerbluetoothstatechangehandler(function(state) {                  if(state == 'powered_on') {                       this.bluetoothenabled = true;                 } else {                      this.bluetoothenabled = false;                 }             });         });     } }

in view have button similar this:

<button [color]="bluetoothenabled ? 'secondary' : 'danger'">test</button>

obviously i'm new angular 2, still trying head around it. think lot of people struggling these issues, since angular 2 new there aren't many examples out there.

i hope guys can me out, in advance!


Comments

Post a Comment

Popular posts from this blog

aws api gateway - SerializationException in posting new Records via Dynamodb Proxy Service in API -

i getting "__type": "com.amazon.coral.service#serializationexception" as reply in postman & in test console in api gateway trying post record directly dynamodb using api proxy services.. referring aws article - https://aws.amazon.com/blogs/compute/using-amazon-api-gateway-as-a-proxy-for-dynamodb/ here's mapping { "tablename": "tablenamegoeshere", "item": { "id" : "$context.requestid" "eventname" : "$input.path('$.eventname')", "timestamp" : $input.path('$.timestamp'), "answers": "$util.parsejson($input.path('$.answers'))" } } update: did asked ... , worked if try add array of json objects gives me above same error - here's trying now. please - couldnt find on google well #set($inputroot = $input.path('$')) { "tablename": "answer", "item": {
Read more

asp.net - Problems sending emails from forum -

i have been redesigning site has message board, has been written guy looked after site. it has few problems , written in .asp , uses .mdb files database. you can see whole thing here . feel free post if helps, test thing have set using original files , new database. the basic problem when posts message, supposed email sent them, have posted it. when replies, originator supposed message, replier has been posted. i’d have thought @ point in process there should script/file in postmessage.asp? the postmessage.asp page below. <% option explicit %> <!-- #include virtual="common/adovbs.inc" --> <html> <head> <meta http-equiv="content-type" content="text/html; charset=windows-1252"> <meta name="generator" content="microsoft frontpage 4.0"> <meta name="progid" content="frontpage.editor.document"> <title>new page 2</title> <base target="_self"
Read more