简体   繁体   English

如何清除事件处理程序中的 Spinner

[英]How do you clear a Spinner within an event handler

When I press a button, I want the spinner value to reset to 0 within an event handler.当我按下按钮时,我希望微调器值在事件处理程序中重置为 0。

Currently I have something like this:目前我有这样的事情:

Spinner sp = new Spinner();
int shAge;
....

EventHandler submitH = new EventHandler() {  

    @Override
    public void handle(Event event) {
        int shAge = Integer.parseInt(sp.getValue().toString());
 ....

        System.out.println(shAge);
.....

and logically in my mind, to clear the spinner after the value has been added to an array list, there should be something like从逻辑上讲,在将值添加到数组列表后清除微调器,应该有类似的东西

sp.clear();

or或者

sp.reset();

however I can't seem to find anything like that when looking in the documentation.但是在查看文档时我似乎找不到类似的东西。

If you only want to reset the value to 0 you can do:如果您只想将值重置为0您可以执行以下操作:

sp.getValueFactory().setValue(0);

If you really want to clear the spinner you can additionally do:如果您真的想清除微调器,您还可以执行以下操作:

sp.getEditor().clear();

But be aware that clearing the editor seems to be not fully supported.但请注意,似乎不完全支持清除编辑器。 Using the increment and decrement buttons after that will throw a NullPointerException for example.例如,在此之后使用递增和递减按钮将抛出 NullPointerException。

声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.

 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM