Question

I use Broadcast receiver to catch Phone state Change.
It works fine when the state change in in first time (for State_OffHook), but don’t react when the call ends.
This is my code:

String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);                     
            if (TelephonyManager.EXTRA_STATE_OFFHOOK.equals(state)) {working fine}
                else if (TelephonyManager.EXTRA_STATE_IDLE.equals(state)) {doesn't react}

Answer 1

When you have no call you are in IDLE state and when you get a call it goes to OFFHOOK state
and when your call ends it again goes to IDLE state

for more info
refer this

How to know whether I am in a call on Android?

EDIT:

@Override
    public void onCallStateChanged(int state, String incomingNumber) {
        super.onCallStateChanged(state, incomingNumber);

        switch (state) {
            case TelephonyManager.CALL_STATE_IDLE:
                // Toast.makeText(context, "Idle", Toast.LENGTH_LONG).show();
                if(UDF.phoneState != TelephonyManager.CALL_STATE_IDLE) {
                    //Here you are came from offhook because value of UDF.phoneState != TelephonyManager.CALL_STATE_IDLE
                    //IDLE is calls many times so you have to keep track by a static variable like  UDF.phoneState
                } 
                break;
            case TelephonyManager.CALL_STATE_OFFHOOK:
                 //Toast.makeText(context, "Idle", Toast.LENGTH_LONG).show();
                break;
            case TelephonyManager.CALL_STATE_RINGING:
                 //Toast.makeText(context, "Idle", Toast.LENGTH_LONG).show();
                endCallIfBlocked(incomingNumber);
                break;

            default:
                break;
        }
        UDF.phoneState = state;
     }