widget only works after 2 installs or reboot

My widget application only works if I install the widget add it to the screen and then install it again, if i add another widget i have to install again in order for the second one to start working (rebooting the device also helps, after the reboot all the widgets on the screen work, I have config file, and it does not reach my appWidgetProvider (the action is set on the onUpdate method), how can i force my APP to update the widget from the configuration file? my config class:

    public static final String SHARED_PREFS = "prefs";
    public static final String KEY_BUTTON_TEXT = "keyButtonText";

    private int appWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
    private EditText example_widget_imageview;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_example_app_widget_config);


        Intent configIntent = getIntent();
        Bundle extras = configIntent.getExtras();
        if (extras != null) {
            appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID,
                    AppWidgetManager.INVALID_APPWIDGET_ID);
        }

        Intent resultValue = new Intent();
        resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
        setResult(RESULT_CANCELED, resultValue);

        if (appWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
            finish();
        }
        example_widget_imageview = findViewById(R.id.edit_text_button);

    }

    public void confirmConfiguration(View v) {
        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this);

        String buttonText = example_widget_imageview.getText().toString();
        RemoteViews views = new RemoteViews(this.getPackageName(), R.layout.example_widget);
        views.setCharSequence(R.id.btn_txt, "setText", buttonText);

        SharedPreferences prefs = getSharedPreferences(SHARED_PREFS, MODE_PRIVATE);
        SharedPreferences.Editor editor = prefs.edit();
        editor.putString(KEY_BUTTON_TEXT + appWidgetId, buttonText);
        editor.apply();

        Intent resultValue = new Intent();
        resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
        setResult(RESULT_OK, resultValue);
        finish();

        appWidgetManager.updateAppWidget(appWidgetId, views);

    }
}

Thanks!

from widget only works after 2 installs or reboot