Android Custom Dialog

   private Dialog alertDialog;


   alertDialog = incomingCallDialog(VoiceActivity.this, activeCallInvite, answerCall(), cancelCall());
   alertDialog.show();




    public Dialog incomingCallDialog(final Context context, CallInvite callInvite, View.OnClickListener answerCall, View.OnClickListener cancelCall) {

        final Dialog dialog = new Dialog(context, android.R.style.Theme_Black_NoTitleBar_Fullscreen);
        dialog.setContentView(R.layout.custom_dailog);

        TextView tv_from = (TextView) dialog.findViewById(R.id.tv_from);
        FloatingActionButton accept = (FloatingActionButton) dialog.findViewById(R.id.btn_accept);
        FloatingActionButton reject = (FloatingActionButton) dialog.findViewById(R.id.btn_reject);

        tv_from.setText("Your Custom Text");

        accept.setOnClickListener(answerCall);
        reject.setOnClickListener(cancelCall);

        return dialog;
    }



    private View.OnClickListener answerCall() {
        return new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                alertDialog.dismiss();

                // do your suff...
            }
        };
    }

    private View.OnClickListener cancelCall() {
        return new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                alertDialog.dismiss();

                // do your suff...
            }
        };
    }