Unable to block incoming call in Android

Question

Calling this method in my Receiver class that extend BroadcastReceiver to cancel incoming call.There is no error in code at compile time but when this method is called the exception is thrown that is.

Exception

java.lang exception android.content.context.getsystemservice(java.lang.string)' on a null object reference

Code

 private void disconnectPhoneItelephony(Context context)
{
    ITelephony telephonyService;
    TelephonyManager telephony = (TelephonyManager)
            context.getSystemService(Context.TELEPHONY_SERVICE);
    try
    {
        Class c = Class.forName(telephony.getClass().getName());
        Method m = c.getDeclaredMethod("getITelephony");
        m.setAccessible(true);
        telephonyService = (ITelephony) m.invoke(telephony);
        telephonyService.endCall();
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
}

The error is in the message. Your Context is null. Can you share your entire class please? — The Hungry Androider, Apr 21 '17 at 18:52

score 1 · Answer 1 · answered Apr 21 '17 at 18:54

Make sure that you properly forward the Context to your method. It seems that the context somehow gets lost during public abstract void onReceive (Context context, Intent intent)

To properly answer this, please show the entire class and make sure that disconnectPhoneItelephony() is called with the correct Context instance.

Unable to block incoming call in Android

1 Answers1