java - Android BluetoothLeAdvertiser not working when used by Nativescript -


i trying create nativescript application allow me send bluetooth low energy advertisements. there no nativescript plugins enable this, have gone ahead , created java library (will add swift library later, that's beside point) should enable advertising.

after creating plugin , integrating java library typescript, see that, although startadvertising() method being called, advertisements not being sent (they weren't showing on ble sniffer.)

because advertising happens in java code, can't find way debug (for instance, can't success/fail message callback, since can't toast outside of activity, or can't print message console).

i wondering if provide insight why advertisements not sending, or method of debugging java code allow me debug it.

ble advertiser library

//imports...  class advertiser {      public string startadvertising(int manufacturerid, byte[] payload, int duration){         //acquire instance of bluetoothleadvertiser         bluetoothadapter btadapter = bluetoothadapter.getdefaultadapter();         bluetoothleadvertiser leadvertiser = btadapter.getbluetoothleadvertiser();          advertisesettings settings =                 new advertisesettings.builder()                         .settimeout(duration)                         .setconnectable(false)                         .setadvertisemode(advertisesettings.advertise_mode_low_latency)                         .settxpowerlevel(advertisesettings.advertise_tx_power_high)                         .build();          advertisedata data = new advertisedata.builder()                 .setincludedevicename(false)                 .setincludetxpowerlevel(false)                 .addmanufacturerdata(manufacturerid, payload)                 .build();          advertisecallback callback = new advertisecallback() {             @override             public void onstartsuccess(advertisesettings settingsineffect) {                 super.onstartsuccess(settingsineffect);             }             @override             public void onstartfailure(int errorcode) {                 super.onstartfailure(errorcode);             }         };          leadvertiser.startadvertising(settings, data, callback);          return "method finished.";     } }

jsintegrator.js

module.exports = { startadvertising: function(manufacturerid, payload, timeout=5000) {         var advertiser = new com.nslibs.moble.advertiser();         console.log("result of startadvertising: " + advertiser.startadvertising(             manufacturerid, payload, timeout));         //prints result of startadvertising: methodfinished     } }

tsintegrator.ts

export function startadvertising(     manufacturerid: number, tosend: number[], timeout?: number);

mainclass.ts

import * ble "my-ble-plugin";     export class main{     foo(){         ble.startadvertising(2, [4,6,8]);     } }

consider making last leadvertiser.startadvertising(settings, data, callback); call in javascript, implementing interface in javascript so: 

new full.package.name.advertisecallback({     onstartsuccess: (settingsineffect) => { ... },     onstartfailure: (code) => { ... }  )

doing gives control on code implement, e.g. can console log want in callbacks, or debug them vscode/chrome devtools.


Comments

Post a Comment

Popular posts from this blog

What is happening when Matlab is starting a "parallel pool"? -

running parallel cpu processes in matlab starts command parpool() according documentation , function: [creates] special job on pool of workers, , [connects] matlab client parallel pool. this function takes bit of time execute, on order of 30 seconds. in other multi-cpu paradigms openmp, parallel execution seems totally transparent -- i've never noticed behavior analogous matlab (granted i'm not experienced parallel programming). so, happening between time parpool() called , when finishes executing? takes long? parallel computing toolbox enables run matlab code in parallel using several different paradigms (e.g. jobs , tasks, parfor , spmd , parfeval , batch processing), , run either locally (parallelised across cores in local machine) or remotely (parallelised across machines in cluster - either 1 own, or 1 in cloud). in of these cases, code run on matlab workers , copies of matlab without interactive desktop. if you're intending run on remo...
Read more

angular - DownloadURL return null in below code -

when change file updated in firebase storage when try downloadurl show null. filechange(event: any) { const imagefolder: string = this.employee.id; const filelist: filelist = event.target.files; const file: file = filelist[0]; const storageref = firebase.storage().ref().child(`${imagefolder}/profile.jpg`).put(file); console.log(storageref.snapshot.downloadurl); } the put() asynchronous. if want url after file uploaded have this: firebase.storage().ref().child(`${imagefolder}/profile.jpg`).put(file).then((snapshot) => { storageref = snapshot.downloadurl: console.log(snapshot.downloadurl); });
Read more

php - Cannot override Laravel Spark authentication with own implementation -

during login process of laravel spark need request token of remote api. api stores exact same users , passwords laravel spark application. therefore need username , non hashed password of user during authentication process. i thought overriding authenticated method solution problem. in routes/web.php override post /login endpoint , pointing endpoint own logincontroller: <?php namespace app\http\controllers\auth; use illuminate\support\facades\log; use illuminate\http\request; use laravel\spark\http\controllers\auth\logincontroller sparklogincontroller; class logincontroller extends sparklogincontroller { /** * create new login controller instance. * * @return void */ public function __construct() { parent::__construct(); } /** * handle successful authentication attempt. * * @param request $request * @param \illuminate\contracts\auth\authenticatable $user * @return response */ public fu...
Read more