英文:
How to use JLabel and Swing Timer to briefly notify the user?
问题
我正在为课程制作一个小应用程序。我想要其中一个功能是，当点击按钮时，根据他们填写的字段将一个对象添加到ArrayList中。当他们点击按钮时，我希望他们能够得到视觉确认已执行该操作。然而，仅更新JLabel会导致在按钮被点击后它将永远停留在那里。
- 我希望标签最开始显示为“”。
- 当点击按钮时，我希望它显示为“Character Added!”
- ..持续几秒钟，然后切换回“”。
我查找了一些关于使用计时器更新标签的问题，但大多数问题都是使用计时器来显示倒计时钟，它们通常使用计时器的启动方法。我对是否需要计时器的停止方法来重置标签感到困惑。
有什么指导意见吗？
英文:
I'm working on a small app for a class. One of the functions I want is when a button is clicked, it adds an object to an ArrayList based on the fields that they filled. When they click they button, I want them to have visual confirmation that the action has been performed. However, just updating a JLabel would cause it to sit there forever after the button was clicked.
- I would like the label to start off displaying "".
- When the button is clicked, I want it to say "Character Added!"
- ..for a few seconds. and then switch back to "".
I looked up some questions about label updating using a timer, but most of them have been using it to display a counting down clock, and they usually use a timer start method. I'm confused about if you need a timer stop method to reset the label.
Any pointers?
答案1
得分: 0
我最终做的是，不再使用更新的 JLabel，而是简单地在按钮被按下并且字符被添加到 ArrayList 时，调用
JOptionPane.showMessageDialog(null, "已添加字符！");
这样，不再是一个小小的 JLabel 来确认，而是得到一个非常明显的通知，需要用户确认。比起使用整个 Timer 的方法要简单得多。
英文:
What I ended up doing is, instead of using a JLabel that updates, I simply made it so when the button is pressed and a character is added to the ArrayList, I called
JOptionPane.showMessageDialogue("Character Added!");
That way instead of a small little JLabel confirming it, they get a very apparent notification that requires them to acknowledge it. Tons more simple than doing the whole Timer thing.
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