Java如何创建捕捉到最近刻度线的JSlider？
该JSlider的setSnapToTicks()方法调用是用来移动JSlider'从您定位旋钮小号旋钮最近的刻度标记。此属性的默认值为false。要使其贴近最近的刻度，请将此属性设置为true。
package org.nhooo.example.swing;
import javax.swing.*;
import java.awt.*;
public class SnapToTickJSlider extends JPanel {
public SnapToTickJSlider() {
initializeUI();
}
private void initializeUI() {
setLayout(new BorderLayout());
setPreferredSize(new Dimension(500, 200));
JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 30, 0);
slider.setMinorTickSpacing(5);
slider.setMajorTickSpacing(10);
slider.setPaintLabels(true);
slider.setPaintTicks(true);
//捕捉到用户旁边最近的刻度线
//定位旋钮。
slider.setSnapToTicks(true);
add(slider, BorderLayout.CENTER);
}
public static void showFrame() {
JPanel panel = new SnapToTickJSlider();
JFrame frame = new JFrame("JSlider - Snap to Tick");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setContentPane(panel);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
SnapToTickJSlider.showFrame();
}
});
}
}上面的代码片段的结果的屏幕截图是：