3

这是示例代码：

package com.javafxportslistviewdemo;

import com.gluonhq.charm.down.Platform;
import com.gluonhq.charm.down.Services;
import com.gluonhq.charm.down.plugins.LifecycleEvent;
import com.gluonhq.charm.down.plugins.LifecycleService;
import javafx.application.Application;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Rectangle2D;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.ListView;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.layout.VBox;
import javafx.stage.Screen;

import javafx.stage.Stage;

public class JavaFXPortsListViewDemo extends Application {

    @Override
    public void init() {
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        Screen primaryScreen = Screen.getPrimary();
        Rectangle2D visualBounds = primaryScreen.getVisualBounds();
        double width = visualBounds.getWidth();
        double height = visualBounds.getHeight();

        Label label = new Label("Here is selected item...");

        ListView<String> listView = new ListView<>();
        ObservableList<String> items = FXCollections.observableArrayList(
                "one", "two", "three", "four");
        listView.setItems(items);
        listView.getSelectionModel().selectedItemProperty().addListener((ObservableValue<? extends String> ov, String old_val, String new_val) -> {
            label.setText(new_val);
        });

        VBox root = new VBox();
        root.getChildren().addAll(label, listView);

        Scene scene = new Scene(root, width, height);

        Services.get(LifecycleService.class).ifPresent(ls -> {
            ls.addListener(LifecycleEvent.PAUSE, () -> onPause());
            ls.addListener(LifecycleEvent.RESUME, () -> onResume());
        });

        scene.addEventHandler(KeyEvent.KEY_RELEASED, e -> {
            if (KeyCode.ESCAPE.equals(e.getCode())) {
                if (Platform.isAndroid()) {
                    // bring up the menu or other Android stuff
                    Services.get(LifecycleService.class).ifPresent(LifecycleService::shutdown);
                } else {
                    // bring up the menu or other Desktop stuff
                    Services.get(LifecycleService.class).ifPresent(LifecycleService::shutdown);
                }
            }
        });

        primaryStage.setScene(scene);
        primaryStage.show();
    }

    private void onPause() {
    }

    private void onResume() {
    }
}

开发环境：JavaFXPorts 8.60.8、javafxmobile-plugin 1.1.0、Gluon Plugin 2.4.0、NetBeans 8.1、Windows 10 Pro、64位

测试环境：Android设备三星Galaxy A5 2016，Android 6.0.1

重现步骤： 1. 使用 JavaFXPorts 8.60.8、javafxmobile-plugin 1.1.0、Gluon Plugin 2.4.0 构建示例代码；2.在Android设备（Android 6.0.1）上安装并运行示例；3. 触摸 ListView 并从 ListView 中选择任何项目 - 未选择项目 -> BUG

为 JavaFXPorts 的问题跟踪器添加了错误：JavaFXPorts 问题

4

1 回答 1

1

感谢您报告问题。

众所周知，在某些三星设备中，触摸事件处理不像在其他 Android 设备中那样工作。

虽然这在 JavaFXPorts 中已修复，但您可以使用以下解决方法：提供一个侦听器，用于在ListCell内部连接选择。

根据您的样本：

    ListView<String> listView = new ListView<>();
    listView.setCellFactory(p -> new ListCell<String>() {

        private String item;
        {
            setOnMouseClicked(e -> listView.getSelectionModel().select(item));
        }

        @Override
        protected void updateItem(String item, boolean empty) {
            super.updateItem(item, empty); 
            this.item = item;
            setText(item);
        }

    });
    listView.getSelectionModel().selectedItemProperty()
      .addListener((ov, old_val, new_val) -> label.setText(new_val));
于 2016-11-08T09:14:27.830 回答