Android Bluetooth File Transfer .apk -

intend:
i´m trying develop single-purpose app, can not exit. should run on phone "operating system". phone used further purposes. app not in play store , can´t leave need update otherwise if have newer versions. purpose i´ve written app call "updater-app". want update via bluetooth. prepared , it´s ready file transfer. phones can connect insecurerfcommsocket. managed select .apk file want send chooser on updater-app , i´m converting uri bytes in code:

sendupdatebutton.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             if (mbtservice != null) {                 intent intent = new intent(intent.action_get_content);                 intent.settype("application/vnd.android.package-archive");                 intent.addcategory(intent.category_openable);                  try {                     startactivityforresult(intent.createchooser(intent, "choose .apk"), file_select_code);                 } catch (android.content.activitynotfoundexception ex) {                     toast.maketext(getapplicationcontext(), "no file-explorer found", toast.length_short).show();                 }             }         }     }); 

and onactivityresult:

protected void onactivityresult(int requestcode, int resultcode, intent data) {     super.onactivityresult(requestcode, resultcode, data);     if (requestcode == file_select_code && resultcode == result_ok && data != null) {         uri selectedfile = data.getdata();         try {             byte[] sendingbyte = readbytes(selectedfile);             mbtservice.send(sendingbyte);         } catch (ioexception e) {             e.printstacktrace();             toast.maketext(getapplicationcontext(), r.string.transmissionfailed, toast.length_short).show();         }     } } 

the readbytes function:

    public byte[] readbytes(uri uri) throws ioexception {     inputstream inputstream = getcontentresolver().openinputstream(uri);     bytearrayoutputstream bytebuffer = new bytearrayoutputstream();     int buffersize = 1024;     byte[] buffer = new byte[buffersize];     int len = 0;     while ((len = inputstream.read(buffer)) != -1) {         bytebuffer.write(buffer, 0, len);     }     return bytebuffer.tobytearray(); } 

with mbtservice.send(sendingbyte) row following function called in connectedthread:

        public void send(byte[] selectedfile) {         try {             mmoutstream.write(selectedfile);         } catch (ioexception e) {             e.printstacktrace();         }     } 

problem:
in receiver phone i´ve got no idea how receive bytes , convert file/uri (no idea yet) .apk , save phone execute button not part of question.

question:
question to in code of receiver phone app manage finish intend? if missed post relevant code i´m sorry , add on request. have program both apps studies i´m thankful help.

i found solution save received bytes bytearray , save file. in bluetooth connectedthread have following run() method:

public void run() {         log.i(tag, "begin mconnectedthread");         byte[] buffer = new byte[1024];         int len;         bytearrayoutputstream bytebuffer = new bytearrayoutputstream();         try {             while ((len = mminstream.read(buffer)) != -1) {                 bytebuffer.write(buffer, 0, len);                 mhandler.obtainmessage(constants.message_read, len, -1, bytebuffer.tobytearray())                         .sendtotarget();             }         } catch (ioexception e) {             e.printstacktrace();             connectionlost();         }     } 

and in activity have following handler message_read:

private final handler mhandler = new handler() {     @override     public void handlemessage(message msg) {         switch (msg.what) {             case constants.message_state_change:                 ...                 break;             case constants.message_read:                 byte[] buffer = (byte[]) msg.obj;                 try {                     string filepath = environment.getexternalstoragedirectory() + "/download/app.apk";                     file file = new file(filepath);                     file.getparentfile().mkdirs();                     if (file.exists()) {                         file.delete();                         file.createnewfile();                     }                     else                         file.createnewfile();                     bufferedoutputstream objectout = new bufferedoutputstream(new fileoutputstream(file));                     objectout.write(buffer);                     objectout.close();                     } catch (exception e) {                     e.printstacktrace();                 }                  break;         }     } }; 

with code .apk saved regular download folder "app.apk".

hope helpful anyone.