基本应用

  1. package com.hxw;
  3. import javafx.application.Application;
  4. import javafx.beans.value.ChangeListener;
  5. import javafx.beans.value.ObservableValue;
  6. import javafx.collections.FXCollections;
  7. import javafx.scene.Group;
  8. import javafx.scene.Scene;
  9. import javafx.scene.control.ListView;
  10. import javafx.stage.Stage;
  12. public class TestListView extends Application {
  14.     @Override
  15.     public void start(Stage primaryStage) throws Exception {
  16.         ListView<String> listView = new ListView<>();
  17.         listView.setItems(FXCollections.observableArrayList("小明","小红","小黄"));
  19.         listView.getSelectionModel().selectedItemProperty().addListener(new ChangeListener<String>() {
  20.             @Override
  21.             public void changed(ObservableValue<? extends String> observable, String oldValue, String newValue) {
  22.                 System.out.println("选中的item为"+newValue);
  23.             }
  24.         });
  26.         primaryStage.setHeight(400);
  27.         primaryStage.setWidth(400);
  28.         primaryStage.setScene(new Scene(new Group(listView)));
  29.         primaryStage.show();
  30.     }
  33.     public static void main(String[] args) {
  34.         launch();
  35.     }
  37. }

image.png

Item的类型不为String的解决方案

  • 设置ListCell ```java package com.hxw;

import javafx.application.Application; import javafx.beans.value.ChangeListener; import javafx.beans.value.ObservableValue; import javafx.collections.FXCollections; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.control.ListCell; import javafx.scene.control.ListView; import javafx.stage.Stage; import javafx.util.Callback;

public class TestListView extends Application {

  1. @Override
  2. public void start(Stage primaryStage) throws Exception {
  3.     ListView<People> listView = new ListView<>();
  4.     listView.setItems(FXCollections.observableArrayList(new People("小明",12),new People("小红",10),new People("小率",18)));
  6.     listView.getSelectionModel().selectedItemProperty().addListener(new ChangeListener<People>() {
  7.         @Override
  8.         public void changed(ObservableValue<? extends People> observable, People oldValue, People newValue) {
  9.             System.out.println("选中的item为"+newValue.name + newValue.year);
  10.         }
  11.     });
  12.     listView.setCellFactory(new Callback<ListView<People>, ListCell<People>>() {
  13.         @Override
  14.         public ListCell<People> call(ListView<People> param) {
  15.             return new PeopleListCell();
  16.         }
  17.     });
  19.     primaryStage.setHeight(400);
  20.     primaryStage.setWidth(400);
  21.     primaryStage.setScene(new Scene(new Group(listView)));
  22.     primaryStage.show();
  23. }
  26. public static void main(String[] args) {
  27.     launch();
  28. }
  30. class PeopleListCell extends ListCell<People> {
  31.     @Override
  32.     protected void updateItem(People item, boolean empty) {
  33.         super.updateItem(item, empty);
  35.         if (item == null){
  36.             this.setText("");
  37.         }else{
  38.             this.setText(item.name+" "+item.year);
  39.         }
  40.     }
  41. }
  44. class People{
  45.     public String name;
  46.     public int year;
  48.     public People(String name, int year) {
  49.         this.name = name;
  50.         this.year = year;
  51.     }
  52. }

}

  1. ![image.png](https://cdn.nlark.com/yuque/0/2020/png/645770/1605621130699-c478365b-a7bc-4652-a010-7cc5cc96c032.png#align=left&display=inline&height=400&margin=%5Bobject%20Object%5D&name=image.png&originHeight=400&originWidth=400&size=9170&status=done&style=none&width=400)<br />[TestListView.java](https://www.yuque.com/attachments/yuque/0/2020/java/645770/1605621221823-b36f156e-0438-4d52-8f1b-65c3b0bd1cc2.java?_lake_card=%7B%22uid%22%3A%221605621219593-0%22%2C%22src%22%3A%22https%3A%2F%2Fwww.yuque.com%2Fattachments%2Fyuque%2F0%2F2020%2Fjava%2F645770%2F1605621221823-b36f156e-0438-4d52-8f1b-65c3b0bd1cc2.java%22%2C%22name%22%3A%22TestListView.java%22%2C%22size%22%3A2140%2C%22type%22%3A%22%22%2C%22ext%22%3A%22java%22%2C%22progress%22%3A%7B%22percent%22%3A99%7D%2C%22status%22%3A%22done%22%2C%22percent%22%3A0%2C%22id%22%3A%22UaOTO%22%2C%22card%22%3A%22file%22%7D)
  3. <a name="C3EEb"></a>
  4. ## Item为多个控件
  5. ![image.png](https://cdn.nlark.com/yuque/0/2021/png/645770/1610125009130-dd178dbb-e05d-4fb8-8eca-38606f1b6d9c.png#align=left&display=inline&height=393&margin=%5Bobject%20Object%5D&name=image.png&originHeight=393&originWidth=386&size=12328&status=done&style=none&width=386)
  6. ```java
  9. import javafx.application.Application;
  10. import javafx.beans.value.ChangeListener;
  11. import javafx.beans.value.ObservableValue;
  12. import javafx.collections.FXCollections;
  13. import javafx.geometry.Pos;
  14. import javafx.scene.Group;
  15. import javafx.scene.Scene;
  16. import javafx.scene.control.Button;
  17. import javafx.scene.control.Label;
  18. import javafx.scene.control.ListCell;
  19. import javafx.scene.control.ListView;
  20. import javafx.scene.layout.HBox;
  21. import javafx.stage.Stage;
  22. import javafx.util.Callback;
  24. public class TestListView extends Application {
  26.     @Override
  27.     public void start(Stage primaryStage) throws Exception {
  28.         ListView<People> listView = new ListView<>();
  29.         listView.setItems(FXCollections.observableArrayList(new People("小明",12),new People("小红",10),new People("小率",18)));
  31.         listView.getSelectionModel().selectedItemProperty().addListener(new ChangeListener<People>() {
  32.             @Override
  33.             public void changed(ObservableValue<? extends People> observable, People oldValue, People newValue) {
  34.                 System.out.println("选中的item为"+newValue.name + newValue.year);
  35.             }
  36.         });
  37.         listView.setCellFactory(new Callback<ListView<People>, ListCell<People>>() {
  38.             @Override
  39.             public ListCell<People> call(ListView<People> param) {
  40.                 return new PeopleListCell();
  41.             }
  42.         });
  44.         primaryStage.setHeight(400);
  45.         primaryStage.setWidth(400);
  46.         primaryStage.setScene(new Scene(new Group(listView)));
  47.         primaryStage.show();
  48.     }
  51.     public static void main(String[] args) {
  52.         launch();
  53.     }
  55.     class PeopleListCell extends ListCell<People> {
  56.         @Override
  57.         protected void updateItem(People item, boolean empty) {
  58.             super.updateItem(item, empty);
  60.             if (item == null){
  61.                 this.setText("");
  62.             }else{
  63.                 HBox hBox = new HBox();
  64.                 hBox.setAlignment(Pos.CENTER);
  65.                 Label info = new Label(item.name+" "+item.year);
  66.                 Button delete = new Button("删除"+item.name);
  68.                 hBox.getChildren().addAll(info,delete);
  69.                 this.setGraphic(hBox);//核心就是这一句了
  70.             }
  71.         }
  72.     }
  75.     class People{
  76.         public String name;
  77.         public int year;
  79.         public People(String name, int year) {
  80.             this.name = name;
  81.             this.year = year;
  82.         }
  83.     }
  85. }