title: How do i detect phone call?
body: <p>I am just starting my adventure with android and I would like to do something like that when someone calls or rings, I put in a "TOAST" and an exemplary inscription.
  I used the code from: <a href="https://gist.github.com/ftvs/e61ccb039f511eb288ee" rel="nofollow noreferrer">https://gist.github.com/ftvs/e61ccb039f511eb288ee</a></p>
  
  <p>My code:</p>
  
  <p>AndroidManifest.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.example.arek.test"&gt;
  
      &lt;uses-permission android:name="android.permission.READ_PHONE_STATE" /&gt;
      &lt;uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/&gt;
      &lt;application
          android:allowBackup="true"
          android:icon="@mipmap/ic_launcher"
          android:label="@string/app_name"
          android:roundIcon="@mipmap/ic_launcher_round"
          android:supportsRtl="true"
          android:theme="@style/AppTheme"&gt;
          &lt;activity android:name=".MainActivity"&gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.MAIN" /&gt;
  
                  &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
              &lt;/intent-filter&gt;
          &lt;/activity&gt;
          &lt;receiver android:name=".CallReceiver" &gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.PHONE_STATE" /&gt;
              &lt;/intent-filter&gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.NEW_OUTGOING_CALL" /&gt;
              &lt;/intent-filter&gt;
          &lt;/receiver&gt;
      &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>
  
  <p>java/com.example.arek.test/MainActivity.java</p>
  
  <pre><code>package com.example.arek.test;
  
  import android.content.Context;
  import android.support.v7.app.AppCompatActivity;
  import android.os.Bundle;
  import android.widget.Toast;
  
  public class MainActivity extends AppCompatActivity {
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
  
          Context context = getApplicationContext();
          Toast.makeText(context, "This is my Toast message!",
                  Toast.LENGTH_LONG).show();
  
      }
  }
  </code></pre>
  
  <p>java/com.example.arek.test/PhonecallReceiver.java</p>
  
  <pre><code>package com.example.arek.test;
  
  import java.util.Date;
  
  import android.content.BroadcastReceiver;
  import android.content.Context;
  import android.content.Intent;
  import android.telephony.TelephonyManager;
  
  public abstract class PhonecallReceiver extends BroadcastReceiver {
  
      //The receiver will be recreated whenever android feels like it.  We need a static variable to remember data between instantiations
  
      private static int lastState = TelephonyManager.CALL_STATE_IDLE;
      private static Date callStartTime;
      private static boolean isIncoming;
      private static String savedNumber;  //because the passed incoming is only valid in ringing
  
  
      @Override
      public void onReceive(Context context, Intent intent) {
  
          //We listen to two intents.  The new outgoing call only tells us of an outgoing call.  We use it to get the number.
          if (intent.getAction().equals("android.intent.action.NEW_OUTGOING_CALL")) {
              savedNumber = intent.getExtras().getString("android.intent.extra.PHONE_NUMBER");
          }
          else{
              String stateStr = intent.getExtras().getString(TelephonyManager.EXTRA_STATE);
              String number = intent.getExtras().getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
              int state = 0;
              if(stateStr.equals(TelephonyManager.EXTRA_STATE_IDLE)){
                  state = TelephonyManager.CALL_STATE_IDLE;
              }
              else if(stateStr.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)){
                  state = TelephonyManager.CALL_STATE_OFFHOOK;
              }
              else if(stateStr.equals(TelephonyManager.EXTRA_STATE_RINGING)){
                  state = TelephonyManager.CALL_STATE_RINGING;
              }
  
  
              onCallStateChanged(context, state, number);
          }
      }
  
      //Derived classes should override these to respond to specific events of interest
      protected void onIncomingCallStarted(Context ctx, String number, Date start){}
      protected void onOutgoingCallStarted(Context ctx, String number, Date start){}
      protected void onIncomingCallEnded(Context ctx, String number, Date start, Date end){}
      protected void onOutgoingCallEnded(Context ctx, String number, Date start, Date end){}
      protected void onMissedCall(Context ctx, String number, Date start){}
  
      //Deals with actual events
  
      //Incoming call-  goes from IDLE to RINGING when it rings, to OFFHOOK when it's answered, to IDLE when its hung up
      //Outgoing call-  goes from IDLE to OFFHOOK when it dials out, to IDLE when hung up
      public void onCallStateChanged(Context context, int state, String number) {
          if(lastState == state){
              //No change, debounce extras
              return;
          }
          switch (state) {
              case TelephonyManager.CALL_STATE_RINGING:
                  isIncoming = true;
                  callStartTime = new Date();
                  savedNumber = number;
                  onIncomingCallStarted(context, number, callStartTime);
                  break;
              case TelephonyManager.CALL_STATE_OFFHOOK:
                  //Transition of ringing-&gt;offhook are pickups of incoming calls.  Nothing done on them
                  if(lastState != TelephonyManager.CALL_STATE_RINGING){
                      isIncoming = false;
                      callStartTime = new Date();
                      onOutgoingCallStarted(context, savedNumber, callStartTime);
                  }
                  break;
              case TelephonyManager.CALL_STATE_IDLE:
                  //Went to idle-  this is the end of a call.  What type depends on previous state(s)
                  if(lastState == TelephonyManager.CALL_STATE_RINGING){
                      //Ring but no pickup-  a miss
                      onMissedCall(context, savedNumber, callStartTime);
                  }
                  else if(isIncoming){
                      onIncomingCallEnded(context, savedNumber, callStartTime, new Date());
                  }
                  else{
                      onOutgoingCallEnded(context, savedNumber, callStartTime, new Date());
                  }
                  break;
          }
          lastState = state;
      }
  }
  </code></pre>
  
  <p>java/com.example.arek.test/CallReceiver.java</p>
  
  <pre><code>package com.example.arek.test;
  
  import java.util.Date;
  
  import android.content.Context;
  import android.widget.Toast;
  
  public class CallReceiver extends PhonecallReceiver {
  
      @Override
      protected void onIncomingCallStarted(Context ctx, String number, Date start) {
          Toast.makeText(ctx.getApplicationContext(), "Dzwonie 1",Toast.LENGTH_LONG).show();
      }
  
      @Override
      protected void onOutgoingCallStarted(Context ctx, String number, Date start) {
          Toast.makeText(ctx.getApplicationContext(), "Test 2",Toast.LENGTH_LONG).show();
      }
  
      @Override
      protected void onIncomingCallEnded(Context ctx, String number, Date start, Date end) {
          Toast.makeText(ctx.getApplicationContext(), "Test 3",Toast.LENGTH_LONG).show();
      }
  
      @Override
      protected void onOutgoingCallEnded(Context ctx, String number, Date start, Date end) {
          Toast.makeText(ctx.getApplicationContext(), "Test 4",Toast.LENGTH_LONG).show();
      }
  
      @Override
      protected void onMissedCall(Context ctx, String number, Date start) {
          Toast.makeText(ctx.getApplicationContext(), "Test 5",Toast.LENGTH_LONG).show();
      }
  
  }
  </code></pre>
  
  <p>The application works but if you call or call someone, there is no TOAST (test *). Please, help me :)</p>