Android Wear Watchface with Sensor Data -

-

apologies lack of code examples, i've tried far has been complete mess.

i've tried searching information online, maybe i'm not searching correct terms.

i can create watch face using samples in android studio & i've created application retrieve data sensors. can't combine two.

what i'm trying create android wear watchface can display various pieces of data collected sensors on board watch.

for example, accelerometer on in order enable wrist gestures.

can point me in right direction how go solving this, without posting link android api, i've exhausted that.

regards,

emmett

ok, after 3 days of playing around , frustrating errors, i've managed solve it, if else needs figure out:

first implement sensoreventlistener:

private class engine extends canvaswatchfaceservice.engine implements sensoreventlistener

next, within onvisibilitychanged, registered 2 methods i've created: 

 @override     public void onvisibilitychanged(boolean visible) {         super.onvisibilitychanged(visible);          if (visible) {             registerreceiver();             registeraccelerometer();              mtime.clear(timezone.getdefault().getid());             mtime.settonow();         } else {             unregisterreceiver();             unregisteraccelerometer();         }         updatetimer();     }

and 2 methods:

private void registeraccelerometer() {         sensormanager = (sensormanager) getsystemservice(sensor_service);         sensormanager.registerlistener(this,                 sensormanager.getdefaultsensor(sensor.type_accelerometer),                 sensormanager.sensor_delay_normal);     } private void unregisteraccelerometer() {         sensormanager.unregisterlistener(this);     }

then, within onsensorchanged, listen accelerometer changes: 

@override     public void onsensorchanged(sensorevent sensorevent) {          ......         // calculate here         }         sensorx  = (int)linear_acceleration[0];         sensory  = (int)linear_acceleration[1];         sensorz  = (int)linear_acceleration[2];     }

assigning these 3 variables, before ondraw() method called:

@override     public void ondraw(canvas canvas, rect bounds) {         // current time         mtime.settonow();          // set current accelerometer readings.         accelerometerx.settext("x : " + string.valueof(sensorx));         accelerometery.settext("y : " + string.valueof(sensory));         accelerometerz.settext("z : " + string.valueof(sensorz));         accelerometerrateofchange.settext("t: " + string.valueof(totaldisplacement));     }

in theory, should same sensors, not accelerometer.

it worth noting created using android studio's sample apps.


Comments

Post a Comment

Popular posts from this blog

javascript - Slick Slider width recalculation -

-
i'm trying add slide in panel on slick container css. carousel works except new width not being calculated when space has been added. recalibrate once advance next slide i'd happen each time panel opened or closed. i've tried adding both margin , padding, neither makes difference. ideas? https://jsfiddle.net/mhigley/dpf7mlpl/ html: <button type="button" id="button"><i class="fa fa-arrow-right"></i></button> <aside> <h2>slide in panel</h2> <ol> <li>list item</li> <li>list item</li> <li>list item</li> <li>list item</li> <li>list item</li> </ol> </aside> <main role="main"> <div class="sections"> <section> <article> <h2>first slide</h2> <p>lorem ipsum d...
Read more

jsf - PrimeFaces Datatable - What is f:facet actually doing? -

-
looking through primefaces code in app noticed following line: <f:facet name="header">#{trainsearch.traincount} trains</f:facet> it looks overriding header, makes sense, can explain me in little more detail? what happening line of code? complete code listed below: <p:datatable id = "results" value = "#{trainsearch.trains}" var = "train" rendered="#{not empty trainsearch.trains}" styleclass = "train-search-table horizontal-border"> <f:facet name="header">#{trainsearch.traincount} trains</f:facet> <p:column headertext = "train id"> <p:panelgrid columns="1" styleclass = "train-id-grid" layout = "grid"> <h:outputtext styleclass = "train-id-label" value="#{train.traini}"/> <h:outputtex...
Read more

angular2 services - Angular 2 RC 4 Http post not firing -

-
i trying fire post request app , it's not working, tried multiple ways. don't see request being fired under network tab in chrome. not sure problem is, appreciated. import { injectable } '@angular/core'; import { http, headers } '@angular/http'; @injectable() export class userservice{ private _url="users"; constructor(private _http: http){ } checkifusernameexists(username){ return this._http.get(this._url+"/"+username) .map(response => response.json()) } createuser(user){ let headers = new headers(); headers.append('content-type', 'application/json') console.log(json.stringify(user)); return this._http.post(this._url, json.stringify(user),{headers: headers}) .map(response => response.json()) } } first need capture error , solve error: this._http.post(this._url, json.stringify(user),{headers: headers}) .subscribe( ...
Read more