如何在代码中约束添加到GridPane的节点?

我需要在代码中向网格窗格添加自定义JavaFX控件。 我设置网格窗格行和列约束如下:

//These are doubles for the purposes of calculating more accurate percentages, see below.
//I feel like there should be a better way to accomplish this but I only want 5
//players per row, so the number of columns would be between 1 and 5 depending on the
//number of players, but if there are 5 or more, modulus doesn't work (5 % 5 = 0)... 
//I'm really bothered by this bit but it was the best I could devise.
double ColumnCount = Math.min(5, this.Settings.PlayerCount());
//This I feel fine with.
double RowCount = this.Settings.PlayerCount() / 5;

//The method encapsulating this code is for starting a new game. 
//This bit is for capturing player names for reassignment.
ArrayList<String> Names = new ArrayList<>();
if (this.Players.size()> 0)
    this.Players.stream().forEach((EQLPlayer plr) ->
        Names.add(plr.PlayerName())
    );

//This is for clearing the fields so they can be repopulated appropriately.
this.Players.clear();
this.gpPlayerField.getChildren().clear(); //<---- gpPlayerField is the GridPane with which I am working that I am trying to populate.
this.gpPlayerField.getColumnConstraints().clear();
this.gpPlayerField.getRowConstraints().clear();

//This bit is for setting up the Column and Row constraints.
for (int x = 0; x < ColumnCount; x++){
    ColumnConstraints CC = new ColumnConstraints();
    CC.setMaxWidth(200.00);
    CC.setPercentWidth( 100.00 / ColumnCount );
    CC.setHgrow(Priority.ALWAYS);
    this.gpPlayerField.getColumnConstraints().add(CC);
}
for (int x = 0; x < RowCount; x++){
    RowConstraints RC = new RowConstraints();
    RC.setMaxHeight(100.00);
    RC.setPercentHeight( 100.00 / RowCount );
    RC.setVgrow(Priority.ALWAYS);
    this.gpPlayerField.getRowConstraints().add(RC);
}

这就是问题所在(我想,代码的其余部分是为了防止我错过了一些非常明显的东西。

//I really feel like this should be working but it isn't.
//I want the rows and columns constrained to the size of the GridPane 
//(which is constrained to the stage) so that they will grow and shrink with it, but
//they are pretty much ignoring it.
for (int x = 0; x < this.Settings.PlayerCount(); x++){
    EQLPlayer plr = new EQLPlayer(x + 1);
    plr.GameMode(this.Settings.Mode());
    if (x < Names.size()) plr.PlayerName(Names.get(x));
    this.gpPlayerField.add(plr, x % 5, x / 5);
    GridPane.setHgrow(plr, Priority.ALWAYS);
    GridPane.setVgrow(plr, Priority.ALWAYS);
}

因此,我正在添加的控件中绑定了一些方法,当控件大小更改时,这些方法将重新缩放所有标签。当他们只是在舞台或场景上时,这很好,但现在不行了,因为他们只是忽略了约束条件,我不知道为什么。我找不到一个能证明我需要做什么的例子 here 并遵循了这个示例,但这也不起作用。那么…我在这里做错了什么?有没有更好的方法来实现我所期待的结果?