从运行方法/线程返回数据以更新GUI

Question

public static void main(String[] args) {
    final Map map = new SimpleMap();
    try {
        // Set System Look and Feel
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
    } catch (UnsupportedLookAndFeelException e) {
        // handle exception
    } catch (ClassNotFoundException e) {
        // handle exception
    } catch (InstantiationException e) {
        // handle exception
    } catch (IllegalAccessException e) {
        // handle exception
    }
    EventQueue.invokeLater(new Runnable() {
        public void run() {
            try {
                MainFrame frame = new MainFrame(map);
                frame.setVisible(true);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });

    MainThread Main = new MainThread();
    Thread main = new Thread(Main);
    main.start();
}

我有一个主要的方法，它应该从一个乐高机器人的数据绘制一个地图，主线程应该处理它从机器人获得的数据：

public class MainThread implements Runnable {

@Override
public void run() {
    final Map map = new SimpleMap();
    Point pos = new Point(0, 0);
    int[] measured = { 0x40, 0x00, 0x02, 0x13, 0x00, 0x03, 0x23, 0xFF,
            0x30, 0x2E, 0x2D, 0x2E, 0x30, 0x3F, 0x3E, 0x3C, 0x3C, 0x3C,
            0x3D, 0x3D, 0x3F, 0x5E, 0x5F, 0x5F, 0xFE, 0xFF, 0xFF, 0xFF,
            0xFF, 0xFF, 0x6B, 0x69, 0x68, 0x68, 0x69, 0x69, 0x6C, 0xFF,
            0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
    map.put(new Square(pos, false));
    //
    // System.out.println("measure");
    // int[] measured;
    // try {
    // measured = robot.measure();
    // } catch (CommandErrorException e) {
    // e.printStackTrace();
    // return;
    // }
    map.processMeasureData(measured, pos, Orientation.NORTH);
}

}

如何从线程获取数据来更新GUI？

Answer 1

不能从Thread的run方法返回值。您所能做的就是在run中调用另一个方法，并将该值作为参数传递到该方法中，然后执行您想要执行的任何处理。希望对你有帮助。如果没有解决，请再问一遍。