Java：JOptionPane 单选按钮
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Java: JOptionPane Radio Buttons
提问by Nicola Daaboul
I'm working on a simple program to help me calculate stuff for mixing eLiquid. I am trying to add radio buttons within JOptionPane.showInputDialog but I can't link them together. When I run the program, nothing comes up. This is all I have:
我正在开发一个简单的程序来帮助我计算用于混合 eLiquid 的东西。我正在尝试在 JOptionPane.showInputDialog 中添加单选按钮，但我无法将它们链接在一起。当我运行程序时，什么也没有出现。这就是我所拥有的：
JRadioButton nicSelect = new JRadioButton("What is the target Nicotine level? ");
JRadioButton b1 = new JRadioButton("0");
JRadioButton b2 = new JRadioButton("3");
JRadioButton b3 = new JRadioButton("6");
JRadioButton b4 = new JRadioButton("12");
JRadioButton b5 = new JRadioButton("18");
JRadioButton b6 = new JRadioButton("24");
回答by copeg
As an alternative to using several JRadioButton's, you can provide a selection interface via a JComboBoxby passing a String array to the JOptionPane.showInputDialog:
作为使用多个的替代方法JRadioButton，您可以JComboBox通过将字符串数组传递给 JOptionPane.showInputDialog来提供选择界面：
String[] values = {"0", "3", "6", "12", "18", "24"};
Object selected = JOptionPane.showInputDialog(null, "What is the target Nicotine level?", "Selection", JOptionPane.DEFAULT_OPTION, null, values, "0");
if ( selected != null ){//null if the user cancels.
String selectedString = selected.toString();
//do something
}else{
System.out.println("User cancelled");
}
回答by whiskeyspider
You can create a custom panel and present any options you like, for example:
您可以创建自定义面板并显示您喜欢的任何选项，例如：
public class Test {
public static void main(final String[] args) {
final JPanel panel = new JPanel();
final JRadioButton button1 = new JRadioButton("1");
final JRadioButton button2 = new JRadioButton("2");
panel.add(button1);
panel.add(button2);
JOptionPane.showMessageDialog(null, panel);
}
}
