android - How to start a new intent / call a method in a handler? -

in case, have problem starting new intent or call method start intent if strreceived bluetooth matches final declared string str. how solve 'cannot make static reference non-static method getintent() type activity'.

i noticed cannot refer global strreceived value outside of handler:

public class standby extends listactivity {  public final static string uuid = "00001101-0000-1000-8000-00805f9b34fb"; public final static string str = "\fdetect1\n\r"; public static string strread; public static string strreceived;  bluetoothadapter bluetoothadapter; broadcastreceiver discoverdevicesreceiver; broadcastreceiver discoveryfinishedreceiver;  //---store discovered devices--- arraylist<bluetoothdevice> discovereddevices; arraylist<string> discovereddevicesnames;  public static textview txtdata;  //---thread connecting client socket--- connecttoserverthread connecttoserverthread;  @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.standby);      //---init arraylist objects , bluetooth adapter---     discovereddevices = new arraylist<bluetoothdevice>();     discovereddevicesnames = new arraylist<string>();      bluetoothadapter = bluetoothadapter.getdefaultadapter();      //---for displaying messages received---     txtdata = (textview) findviewbyid(r.id.txtdata); }  //method make discoverable public void makediscoverable(view view)  {      intent = new intent(         bluetoothadapter.action_request_discoverable);     i.putextra(         bluetoothadapter.extra_discoverable_duration, 300); //300 seconds     startactivity(i); }  //method discover other bluetooth devices private void discoveringdevices() {      if (discoverdevicesreceiver == null) {         discoverdevicesreceiver = new broadcastreceiver() {              //fired when new device discovered             @override             public void onreceive(context context, intent intent) {                 string action = intent.getaction();                  //when device discovered---                 if (bluetoothdevice.action_found.equals(action)) {                     //---get bluetoothdevice object                      // intent---                     bluetoothdevice device =                          intent.getparcelableextra(                             bluetoothdevice.extra_device);                      //---add name , address array                      // adapter show in listview---                     //---only add if device not                      // in list---                     if (!discovereddevices.contains(device)) {                         //---add device---                         discovereddevices.add(device);                          //---add name of device; used                          // listview---                         discovereddevicesnames.add(device.getname());                          //---display items in listview---                         setlistadapter(new                                  arrayadapter<string>(getbasecontext(),                                 android.r.layout.simple_list_item_1,                                  discovereddevicesnames));                     }                  }             }         };     }      if (discoveryfinishedreceiver==null) {         discoveryfinishedreceiver = new broadcastreceiver() {             //fired when discovery done             public void onreceive(context context, intent intent) {                 //---enable listview when discovery over;                  // 12 seconds---                 getlistview().setenabled(true);                  toast.maketext(getbasecontext(),                          "discovery completed. please select bluebee.",                          toast.length_long).show();                 unregisterreceiver(discoveryfinishedreceiver);             }          };     }      //---register broadcast receivers---     intentfilter filter1 = new         intentfilter(bluetoothdevice.action_found);     intentfilter filter2 = new         intentfilter(bluetoothadapter.action_discovery_finished);      registerreceiver(discoverdevicesreceiver, filter1);     registerreceiver(discoveryfinishedreceiver, filter2);      //---disable listview when discover in progress---     getlistview().setenabled(false);     toast.maketext(getbasecontext(),              "discovery in progress...please wait...",              toast.length_long).show();     bluetoothadapter.startdiscovery(); }   //calls method discover other bluetooth devices public void discoverdevices(view view)  {     //---discover other devices---     discoveringdevices();    }  static handler uiupdater = new handler(){ public void handlemessage(message msg) {      int numofbytesreceived = msg.arg1;     byte[] buffer = (byte[]) msg.obj;     //---convert entire byte array string---     string strreceived = new string(buffer);     //---extract actual string received---     strreceived = strreceived.substring(         0, numofbytesreceived);      //---display text string str on textview in 1 line only---     //txtdata.settext(strreceived);      //compare string. method return 0 if both identical     if (strreceived.compareto(str)==0){         txtdata.settext("fall detected!!");         intent = new intent ("com.example.next");           //get data using bundle         //add set of extended data intent , start         bundle b = getintent().getextras();          i.putextras(b);         startactivity(i);         //readysms();     } } };  //fired when method called public void readysms() {      // todo auto-generated method stub         intent = new intent ("com.example.next");           //get data using bundle         //add set of extended data intent , start         bundle b = getintent().getextras();          i.putextras(b);         startactivity(i); }  public void onpause() {     super.onpause();     //---cancel discovery of other bluetooth devices     bluetoothadapter.canceldiscovery();      //---unregister broadcast receiver      // discovering devices---      if (discoverdevicesreceiver != null) {         try {             unregisterreceiver(discoverdevicesreceiver);          } catch(exception e) {         }     }      //---if connected someone...---     if (connecttoserverthread!=null) {          try {             //---close connection---             connecttoserverthread.bluetoothsocket.close();              //calls method ready sms         } catch (ioexception e) {             log.d("mainactivity", e.getlocalizedmessage());         }     } }  //fired when client tapped in listview--- public void onlistitemclick(listview parent, view v,  int position, long id) {     //---if talking someone...---     if (connecttoserverthread!=null) {         try {             //---close connection first---             connecttoserverthread.bluetoothsocket.close();         } catch (ioexception e) {             log.d("mainactivity", e.getlocalizedmessage());             //toast.maketext(this, "connect failed", toast.length_short).show();         }     }      //---connect selected bluetooth device---     bluetoothdevice deviceselected =         discovereddevices.get(position);      connecttoserverthread = new          connecttoserverthread(deviceselected, bluetoothadapter);     connecttoserverthread.start();      /*       thread cancel = new thread(){                public void run(){                     //this must same action name performed in manifest.xml file                     //if (txtdata.gettext().tostring().equalsignorecase(str)){                      //if (strreceived!=null){                     //  strread = strreceived;                     //  if (strread.compareto(str)==0){                             try{                                 sleep(3000);                                 intent = new intent ("com.nick.falldetection.cancel");                                      //get data using bundle                                 //add set of extended data intent , start                                 bundle b = getintent().getextras();                                  //string owner = b.getstring("abc");                                 //string message = b.getstring("longmessage");                                 //string phoneno = b.getstring("phoneno");                                      i.putextras(b);                                 startactivity(i);                             } catch (interruptedexception e) {                                 // todo auto-generated catch block                                 e.printstacktrace();                             }                              finally{                                 //finish();                             }                         }                     //}     };                      {     cancel.start();  } */  }; } 

you can solve having youractivity mactivity field in handler , setting this in activity's oncreate. way can reach youractivity has handler mhandler.mactivity.yourfieldormethod.

you this

class myactivity {  static class myhandler extends handler() {    myactivity mactivity;    void handlemessage() {          mactivity.somemethod();    } };  private myhandler uihandler = new myactivity();  private void somemethod() { /* ... */ }  void oncreate(bundle savedinstancestate) {      super.oncreate(savedinstancestate);     uihandler.mactivity = this; } 

}