Question

我有这个简单的代码：

public class ControllerList {
@FXML ListView listView;
@FXML Button btnSend;
@FXML ColorPicker colorPicker;
@FXML TextField textField;

  public void clickSend() {
      listView.getItems().add(textField.getText());
  }
}

我需要使用颜色选择器为添加到ListView的文本着色。我怎么能这样做？

Answer 1

创建一个类来封装文本和颜色：

public class ColoredText {

    private final String text ;
    private final Color color ;

    public ColoredText(String text, Color color) {
        this.text = text ;
        this.color = color ;
    }

    public String getText() {
        return text ;
    }

    public Color getColor() {
        return color ;
    }
}

然后使用ListView<ColoredText>与单元格工厂：

public class ControllerList {

    @FXML ListView<ColoredText> listView;
    @FXML Button btnSend;
    @FXML ColorPicker colorPicker;
    @FXML TextField textField;

    public void initialize() {
        listView.setCellFactory(lv -> new ListCell<ColoredText>() {
            @Override
            protected void updateItem(ColoredText item, boolean empty) {
                super.updateItem(item, empty);
                if (item == null) {
                    setText(null);
                    setTextFill(null);
                } else {
                    setText(item.getText());
                    setTextFill(item.getColor());
                }
            }
        });
    }

    public void clickSend() {
        listView.getItems().add(new ColoredText(textField.getText(), colorPicker.getValue()));
    }

}

JavaFX ListView颜色文本

1 个答案: