胶合移动TextArea软键盘问题

我正在使用FXML的多视图项目，由IntelliJ的Gluon插件生成 .

我在生成的主视图和辅助视图旁边添加了一个视图（扫描视图），并提供了在GluonApplication类中导航的代码 .

我第一次导航到扫描视图时，一个carret在textarea中闪烁，但我的Android设备上的软键盘没有显示 . 当我导航到另一个视图时，键盘会短暂显示并在一秒钟后消失 . 然后，当我导航回扫描视图时，软键盘会显示 . 最后，当我用我的Android设备上的后退按钮从textarea收回焦点时，通过点击textarea重新获得焦点是不可能的 .

任何信息欢迎，欢呼 .

GluonApplication.java：

public class GluonApplication extends MobileApplication {

    public static final String PRIMARY_VIEW = HOME_VIEW;
    public static final String SECONDARY_VIEW = "Product View";
    public static final String SCAN_VIEW = "Scan View";
    public static final String MENU_LAYER = "Side Menu";

    @Override
    public void init() {
        //Add views.
        addViewFactory(PRIMARY_VIEW, () -> (View) new PicklistView().getView());
        addViewFactory(SECONDARY_VIEW, () -> (View) new ProductView().getView());
        addViewFactory(SCAN_VIEW, () -> (View) new ScanView().getView());

        //Navigation side bar configuration.
        NavigationDrawer drawer = new NavigationDrawer();
        NavigationDrawer.Header header = new NavigationDrawer.Header("Gluon Mobile",
                "Multi View Project",
                new Avatar(21, new Image(GluonApplication.class.getResourceAsStream("/icon.png"))));
        drawer.setHeader(header);

        final Item primaryItem = new Item("Picklist", MaterialDesignIcon.HOME.graphic());
        final Item secondaryItem = new Item("Product", MaterialDesignIcon.DASHBOARD.graphic());
        final Item scanItem = new Item("Scan", MaterialDesignIcon.DASHBOARD.graphic());
        drawer.getItems().addAll(primaryItem, secondaryItem, scanItem);

        drawer.selectedItemProperty().addListener((obs, oldItem, newItem) -> {
            hideLayer(MENU_LAYER);
            if (newItem.equals(primaryItem)) {
                switchView(PRIMARY_VIEW);
            } else if (newItem.equals(secondaryItem)) {
                switchView(SECONDARY_VIEW);
            } else {
                switchView(SCAN_VIEW);
            }
        });

        addLayerFactory(MENU_LAYER, () -> new SidePopupView(drawer));
    }

scan.fxml：

<?import com.gluonhq.charm.glisten.mvc.View?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TextArea?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.layout.VBox?>

<View fx:id="scan" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="350.0" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.essers.pxl2016.scan.views.ScanPresenter">
    <center>
        <VBox alignment="TOP_CENTER" BorderPane.alignment="CENTER">
            <children>
                <Label fx:id="label" text="scan output label">
               <VBox.margin>
                  <Insets bottom="5.0" />
               </VBox.margin></Label>
                <TextArea fx:id="input" />
            </children>
        </VBox>
    </center>
   <padding>
      <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
   </padding>
</View>

ScanPresenter：

public class ScanPresenter {
    @FXML
    private View scan;
    @FXML
    private Label label;
    @FXML
    private TextArea input;

    private String oldString;

    public void initialize() {
        scan.showingProperty().addListener((obs, oldValue, newValue) -> {
            // Update app bar.
            if (newValue) {
                AppBar appBar = MobileApplication.getInstance().getAppBar();
                appBar.setNavIcon(MaterialDesignIcon.MENU.button(e ->
                        MobileApplication.getInstance().showLayer(GluonApplication.MENU_LAYER)));
                appBar.setTitleText("Scan");
                appBar.getActionItems().add(MaterialDesignIcon.CLOSE.button(e ->
                        javafx.application.Platform.exit()));
            }
        });

        input.textProperty().addListener((observable, oldValue, newValue) -> {
            if (oldValue.equals(newValue)) {
                return;
            } else {
                label.setText(newValue);
            }
        });

        input.requestFocus();
    }
}