Android BroadcastReceiver does not work phone calls -


i looking examples.

my class like:

<pre><code>  package com.example.pjimnez.samsung_auto_reply;  import android.content.broadcastreceiver; import android.content.context; import android.content.intent; import android.content.intentfilter; import android.support.v7.app.appcompatactivity; import android.os.bundle; import android.telephony.phonestatelistener; import android.telephony.smsmanager; import android.telephony.telephonymanager; import android.widget.button; import android.widget.textview; import android.view.view; import android.widget.toast; import android.content.intent; import android.content.intentfilter;   public class mainactivity extends appcompatactivity {          //intentfilter screenstatefilter;         button btnstart;         textview txthome;           //phonestate ophonestate;          intentfilter filter1;            private final broadcastreceiver myphonestate = new broadcastreceiver() {             @override             public void onreceive(context context, intent intent) {                 string state = intent.getstringextra(telephonymanager.extra_state);                  if (state == null) {                      //outgoing call                     string number = intent.getstringextra(intent.extra_phone_number);                      toast.maketext(context, number, toast.length_long).show();                  } else if (state.equals(telephonymanager.extra_state_offhook)) {                      //log.e("tag", "extra_state_offhook");                      toast.maketext(context, "extra_state_offhook", toast.length_long).show();                  } else if (state.equals(telephonymanager.extra_state_idle)) {                      //log.e("tag", "extra_state_idle");                     toast.maketext(context, "extra_state_idle", toast.length_long).show();                  } else if (state.equals(telephonymanager.extra_state_ringing)) {                      //incoming call                     string number = intent.getstringextra(telephonymanager.extra_incoming_number);                     //log.e("tag", "incoming number : " + number);                     toast.maketext(context, number, toast.length_long).show();                  } else                     toast.maketext(context, "none", toast.length_long).show();             }           };                @override         protected void oncreate(bundle savedinstancestate) {             super.oncreate(savedinstancestate);             setcontentview(r.layout.activity_main);               filter1 = new intentfilter(telephonymanager.action_phone_state_changed);             registerreceiver(this.myphonestate, filter1);               btnstart = (button) findviewbyid(r.id.btnstart);// instancia del objeto boton intro              //no funciona en modo escucha             btnstart.setonclicklistener(new view.onclicklistener() {                 public void onclick(view v) {                       txthome = (textview) findviewbyid(r.id.txthome);                     txthome.settext("dio click en el boton!" );//cambio el contenido del textview                      //envia el mensahe sms                     /*                     smsmanager smsmanager = smsmanager.getdefault();                     smsmanager.sendtextmessage("5524234613", null, "mensaje de prueba", null, null);                     */                 }             });           }         }      enter code here  </code></pre>

my manifest has permissions to:

android.permission.read_phone_state

android.permission.receive_sms

android.permission.send_sms

the problem app never show message on phone change state

i not know whats wrong broadcastreceiver

could helpme

try this:

1- add class phonestatebroadcastreceiver extends broadcastreceiver , overwrite onreceive()

2- @ runtime, request phone_state permission upfront

activitycompat.requestpermissions(mymainactivity,         new string[]{manifest.permission.read_phone_state},         read_phone_state_code);

and give via system dialog

3- make phone call

you'll see intent caught in onreceive():

intent: intent { act=android.intent.action.read_phone_state flg=0x10 cmp=com.myapp.network.phonestatebroadcastreceiver (has extras) } action: android.intent.action.phone_state

hope helps


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