<EditText
android:id="@+id/et_scanitemcode"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="60"
android:background="@drawable/edittext_background"
android:gravity="right|center_vertical"
android:maxLines="1"
android:paddingLeft="5dp"
android:textColor="@drawable/edittext_color_background" />


<ListView
android:id="@+id/lst_salesScannedItems"
android:layout_width="match_parent"
android:layout_height="match_parent"/>

et_scanitemcode.setOnKeyListener(new EditText.OnKeyListener() {
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                Log.i("==>",""+KeyEvent.keyCodeToString(event.getAction()));
                Log.i("==>",""+keyCode);
                // If the event is a key-down event on the "enter" button
                //This is the filter


                if (event.getAction()==KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_ENTER) {
                    // Perform action on key press
                    String scanItemCode = et_scanitemcode.getText().toString().trim();


                    return true;
                }
                return false;
            }
        });