我有一个listBox,其中填充了来自mysql数据库的一些数据。我希望在表中添加所选项目从列表视图查看。问题是,当我单击"添加"按钮时,所选项目会添加到第一个单元格中。但是,当我选择另一个项目,然后单击"添加"时,它会在第一个单元格中被覆盖。这是我的密码。
Button Select= new Button("Select");
private TableView table = new TableView<>();
public void start(Stage primaryStage) throws Exception{
TableColumn<Map, String> NameCol = new TableColumn<>("NameCol");
TableColumn<Map, String> QuantityCol = new TableColumn<>("Quantity");
TableColumn<Map, String> PriceCol = new TableColumn<>("Price");
ObservableList <String> items = FXCollections.observableArrayList (
"0" , "1" , "2" , "3" , "4" ,
"5" , "6" , "7" , "8" , "9" );
table.getColumns().addAll(NameCol, QuantityCol, PriceCol);
QuantityCol.setCellFactory(ChoiceBoxTableCell.forTableColumn (items));
table.setItems(generateDataInMap());
table.setEditable(true);
table.getSelectionModel().setCellSelectionEnabled(true);
table.getColumns().setAll(NameCol, QuantityCol,PriceCol);
Select.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
try {
table.setItems(generateDataInMap());
NameCol.setCellValueFactory(new MapValueFactory(Column1MapKey));
} catch (Exception ex) {
Logger.getLogger(mainMenu.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
private ObservableList<Map> generateDataInMap() {
int count = 1;
ObservableList<Map> allData = FXCollections.observableArrayList();
Map<String, String> dataRow = new HashMap<>();
String value1 = nameView.getSelectionModel().getSelectedItem();
dataRow.put(Column1MapKey, value1);
allData.add(dataRow);
System.out.println(dataRow);
return allData;
}
public static void main(String[] args) {
launch(args);
}
我没有写所有的代码,只是代码块。有人能帮帮我吗。我真的很感激:):)
在事件处理程序中,您正在调用
table.setItems(...);
它设置了表中显示的项目(即用您指定的项目替换所有项目)。
使用
table.getItems().addAll(...);
相反。
在搜索了4天后,我制作了这个代码。。。它有效。:)如果有人需要,请写在下面。
public class mainMenu extends Application {
private TableView<foodTable> table = new TableView<foodTable>();
private final ObservableList<foodTable> data = FXCollections.observableArrayList();
Select.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
try {
String FoodName = new String(nameView.getSelectionModel().getSelectedItem());
data.add(new foodTable(String.valueOf(rowid),FoodName,qtycb.getValue().toString(),String.valueOf(PriceAmtVal)));
rowid++;
System.out.println(data);
} catch (Exception ex) {
Logger.getLogger(mainMenu.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
//Buttion code :
Select.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
try {
String FoodName = new String(nameView.getSelectionModel().getSelectedItem());
data.add(new foodTable(String.valueOf(rowid),FoodName,qtycb.getValue().toString(),String.valueOf(PriceAmtVal)));
rowid++;
System.out.println(data);
} catch (Exception ex) {
Logger.getLogger(mainMenu.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
public static class foodTable {
private final SimpleStringProperty FoodName;
private final SimpleStringProperty Quantity;
private final SimpleStringProperty Price;
private foodTable(String fName, String lName, String email,String Price) {
this.FoodName = new SimpleStringProperty(lName);
this.Quantity = new SimpleStringProperty(email);
this.Price = new SimpleStringProperty(Price);
}
public String getFoodName() {
return FoodName.get();
}
public void setFoodName(String fName) {
FoodName.set(fName);
}
public String getQuantity() {
return Quantity.get();
}
public void setQuantity(String fName) {
Quantity.set(fName);
}
public String getPrice() {
return Price.get();
}
public void setPrice(String fName) {
Price.set(fName);
}
}