java - Is there a simple example of the new ANDROID M MIDI -

-

i trying read midi data in new android mushroom midi. attempting use new midi method.

https://developer.android.com/reference/android/media/midi/package-summary.html

android midi has example. contains spinners, context, wrappers , way complex first understanding from. has many java programs , 800 lines of code. want open device 0 , midi output port 2.

is there simple example out there using classes m.opendevice , public void ondeviceopened(mididevice device)? searching first example runs in main , produces textview output.

this seems simple midi sends 3 bits of data, key down, key number, , impact. after weeks of trying, can't seem work. here oneidi example of code below. contains 30 lines of code. want.

// midi parameters out of midi transmitter       public void midi_info() {          midimanager m = (midimanager) getsystemservice(midi_service);         //get system device information         final midideviceinfo[] deviceinfo = m.getdevices();          //your devices have info in array poiston 0         midideviceinfo info = deviceinfo[0];           // midi device port information         int numinputs = info.getinputportcount();         int numoutputs = info.getoutputportcount();          // test connection         if (numoutputs < 1) {             //out put no prot found             textview textout = null;             textout = (textview) findviewbyid(r.id.log);             textout.settextcolor(color.red);             textout.settext("     midi port disconnected");             //send device info test box         } else {             textview textout = null;             textout = (textview) findviewbyid(r.id.log);             textout.settextcolor(color.blue);             textout.settext(string.format(" midi input port number   =  %d  of %d \n" +                     " midi output port number = %d  of %d\n" +                     " \n" +                     " %s", midideviceinfo.portinfo.type_input, numinputs, midideviceinfo.portinfo.type_output, numoutputs, deviceinfo[0].tostring()));           }      }      //method open_device opens midi device     public void open_device() {           //call midimanager within oncreate method         midimanager m = (midimanager) getsystemservice(midi_service);           midideviceinfo[] info = m.getdevices();         final midideviceinfo info0 = info[0];          //open instance of class opendevice          bundle properties = info0.getproperties();         final string name = properties.getstring(midideviceinfo.property_name);         final string deviceusb = properties.getstring(midideviceinfo.property_usb_device);          m.opendevice(info0, new ondeviceopenedlistener() {               @override               public void ondeviceopened(mididevice device) {                    if (name.equals("androidmidiscope0")) {                     textview textout = null;                     textout = (textview) findviewbyid(r.id.log);                     textout.settextcolor(color.red);                     textout.settext("device failed open");                 } else {                       textview textout = null;                     textout = (textview) findviewbyid(r.id.log);                     textout.settextcolor(color.blue);                     textout.settext(string.format("device opened  = %s", device));                     int portnumber = 2;                     midioutputport outputport = device.openoutputport(portnumber);                     }               }           }, new handler(looper.getmainlooper()));     }      }   public class myreceiver extends midireceiver {       mididevice device =null;     public void onsend(byte[] data, int offset, int count, long timestamp) throws ioexception {         textview textout = null;         textout = (textview) textout.findviewbyid(r.id.log);         textout.settextcolor(color.red);         textout.settext(string.format("midi keydown detected  data =%s", data[0]));      }     }


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