用标签填充GridPane [英] Filling GridPane with lables

问题描述

我有这个构造函数，我正在尝试用标签填充网格窗格.我碰到一堵砖墙，不知道怎么了.我需要在1行中创建13个标签.

I've got this constructor and I'm trying to fill up the gridpane with labels. I've hit a brick wall and have no idea what's wrong. I need to create 13 labels in 1 row.

构造函数:

public class Labels {
   @FXML
    GridPane gridPane = new GridPane();

    public Labels(String labelname, int columnIndex, int rowIndex) {
        Label label = new Label();
        gridPane.setColumnIndex(label, columnIndex);
        gridPane.setRowIndex(label, rowIndex);
        label.setId(labelname+columnIndex);
        label.setVisible(true);
        label.setText("test");
    }   

}

控制器中的循环:

for(int i2=0; i2<13; i2++){

        Labels labels = new Labels("label", i2, 3);
 }

推荐答案

您没有将 Label 添加到 GridPane 中.此外，您对每个 Label 使用新的 GridPane ，而永远不要在任何地方使用这些 GridPane .

You're not adding the Labels to the GridPane. Furthermore you use new GridPanes for every Label and never use those GridPanes anywhere.

public class Labels {

    private GridPane gridPane = new GridPane();

    public GridPane getGridPane() {
        return gridPane; 
    }

    public void addLabel(String labelname, int columnIndex, int rowIndex) {
        Label label = new Label();
        GridPane.setColumnIndex(label, columnIndex);
        GridPane.setRowIndex(label, rowIndex);
        label.setId(labelname+columnIndex);
        label.setText("test");

        gridPane.getChildren().add(label);
    }   

}

Labels labels = new Labels();

for(int i2=0; i2<13; i2++){
    labels.addLabel("label", i2, 3);
}

GridPane gridPane = labels.getGridPane();
// TODO: display gridPane

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