JavaFX - 使 ScrollPane 自动滚动
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JavaFX - Make ScrollPane scroll automatically
提问by user3029101
I have a Label inside a ScrollPane. I am updating the label in a loop (In another thread). How can I update the ScrollPane so it scrolls down (not sideways, this will be done manually) if the user doesnt hold it at a position? Is there a setter for it?
我在 ScrollPane 中有一个标签。我正在循环更新标签（在另一个线程中）。如果用户没有将其保持在某个位置，我如何更新 ScrollPane 使其向下滚动（不是侧向滚动，这将手动完成）？有没有适合它的设置器？
采纳答案by user3029101
@Math thanks , that worked!
@Math 谢谢，成功了！
@FXML private ScrollPane scroll; //this must match the fx:id of the ScrollPane element or be the scrollpane object
scroll.setVvalue(1.0); //1.0 means 100% at the bottom
And I solved the problem "must be looking at the tab" with this part of code
我用这部分代码解决了“必须查看标签”的问题
tab.setOnSelectionChanged(new EventHandler<Event>() {
@Override
public void handle(Event arg0) {
ScrollPane.setVvalue(1.0);
}
});
回答by Math
To set the ScrollPane to the bottom automatically set the vvalueof the ScrollPane element, like this:
要将 ScrollPane 设置为底部，请自动设置vvalueScrollPane 元素的 ，如下所示：
@FXML private ScrollPane scroll; //this must match the fx:id of the ScrollPane element
scroll.setVvalue(1.0); //1.0 means 100% at the bottom
回答by Alberto Trindade Tavares
If you are using either HBox or VBox within the ScrollPane, try the following:
如果您在 ScrollPane 中使用 HBox 或 VBox，请尝试以下操作：
hBox.heightProperty().addListener(new ChangeListener() {
@Override
public void changed(ObservableValue observable, Object oldvalue, Object newValue) {
scrollPane.setHvalue((Double)newValue );
}
});
回答by brack11
This works in my code:
这适用于我的代码：
scrollPane.vvalueProperty().bind(mainGrid.heightProperty());
in my case scrollPane contains mainGrid
在我的情况下，scrollPane 包含 mainGrid
回答by Francesco Menzani
To scroll the scroll pane to the bottom completely, set its vvaluepropertyto 1.0:
要将滚动窗格完全滚动到底部，请将其vvalue属性设置为1.0：
scrollPane.setVvalue(1D);
Note this may not work when called after resizing the scroll pane's content.
In such a case, if delaying the call via Platform.runLater()doesn't fix the problem, consider setting the property's value in response to the content heightpropertyinvalidation event:
请注意，在调整滚动窗格内容的大小后调用这可能不起作用。
在这种情况下，如果延迟调用 viaPlatform.runLater()不能解决问题，请考虑设置属性值以响应内容height属性失效事件：
vBox.heightProperty().addListener(observable -> scrollPane.setVvalue(1D));
回答by Martin Pfeffer
This should do the trick:
这应该可以解决问题：
// adding a new row
vbox_event.addEventRow((Integer) null, null);
// scroll to bottom
Platform.runLater(new Runnable() {
@Override
public void run() {
scrollpane.setVvalue(1.0);
}
});
