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import javafx.application.Application;import javafx.beans.value.ChangeListener;import javafx.beans.value.ObservableValue;import javafx.collections.FXCollections;import javafx.collections.ObservableList;import javafx.event.ActionEvent;import javafx.event.EventHandler;import javafx.scene.Scene;import javafx.scene.control.Button;import javafx.scene.control.ListView;import javafx.scene.control.ScrollToEvent;import javafx.scene.control.SelectionMode;import javafx.scene.control.cell.TextFieldListCell;import javafx.scene.layout.AnchorPane;import javafx.stage.Stage;public class Main extends Application {       public static void main(String[] args) {           launch(args);    }    @Override    public void start(Stage primaryStage) throws Exception {           //数据源 可观察列表        ObservableList
   
     obslist = FXCollections.observableArrayList();        obslist.add("data - a");        obslist.add("data - b");        obslist.add("data - c");        obslist.add("data - d");        obslist.add("data - e");        obslist.add("data - f");        obslist.add("data - g");        obslist.add("data - h");        obslist.add("data - i");        obslist.add("data - j");        obslist.add("data - k");        obslist.add("data - l");        obslist.add("data - m");        obslist.add("data - n");        obslist.add("data - o");        obslist.add("data - p");        obslist.add("data - q");        obslist.add("data - r");        ListView
    
      listView = new ListView
     
      (obslist);        listView.setPrefHeight(200);        Button bu = new Button("按钮");        AnchorPane an = new AnchorPane();        an.getChildren().addAll(listView,bu);        AnchorPane.setTopAnchor(listView,100.0);        AnchorPane.setLeftAnchor(listView,100.0);        //单选或多选        listView.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);//多选        //监听 项        listView.getSelectionModel().selectedItemProperty().addListener(new ChangeListener
      
       () {               @Override            public void changed(ObservableValue
        observable, String oldValue, String newValue) {                   System.out.println("项 = " + newValue);            }        });        //监听 索引        listView.getSelectionModel().selectedIndexProperty().addListener(new ChangeListener
       
        () {               @Override            public void changed(ObservableValue
         observable, Number oldValue, Number newValue) {                   System.out.println("索引 = " + newValue.intValue());            }        });        //滚动事件 listView.scrollTo()执行可以触发        listView.setOnScrollTo(new EventHandler
        
         
          >() { @Override public void handle(ScrollToEvent
          
            event) { System.out.println(event.getScrollTarget()); } }); //双击可编辑 - 修改了原始数据 listView.setEditable(true); //工厂方法 listView.setCellFactory(TextFieldListCell.forListView()); Scene scene = new Scene(an); primaryStage.setScene(scene); primaryStage.setWidth(800); primaryStage.setHeight(800); primaryStage.setTitle("JavaFX"); primaryStage.show(); bu.setOnAction(new EventHandler
           
            () { @Override public void handle(ActionEvent event) { //单选// listView.getSelectionModel().select("data - g");// listView.scrollTo("data - g");//滚动到// listView.requestFocus();//获得焦点 //多选// listView.getSelectionModel().selectIndices(1,2,4);//按钮按下后选中下标为1，2，4的项// listView.requestFocus();//获得焦点// listView.getSelectionModel().getSelectedItems().forEach(System.out::println); obslist.forEach(System.out::println); } }); }}
           
          
         
        
       
      
     
    
   

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