JAVA ME学习，第一个JAVA ME程序----手电筒
这个程序很简洁，进入就是一片白。。。无其他东东，亮度为最大，是屏幕的手电（5320不支持闪光灯）
右软键和3键是退出，还有我右软键用165的键值不行，而用-7才行，有知道的请告诉这是什么情况。

import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
import javax.microedition.lcdui.*;
import com.nokia.mid.ui.DeviceControl;

public class a extends MIDlet {
	private Display display;
	MyCanvas mc = new MyCanvas();

	public a() {

	}

	protected void startApp() throws MIDletStateChangeException {
		display = Display.getDisplay(this);
		display.setCurrent(mc);

	}

	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {

	}

	protected void pauseApp() {

	}

	class MyCanvas extends Canvas {

		public void paint(Graphics g) {
			g.setColor(255, 255, 255);
			g.fillRect(0, 0, 320, 240);
			setFullScreenMode(true);
			DeviceControl.setLights(0, 100);

		}

		protected void keyPressed(int keyCode) {
			if (keyCode == 165 || keyCode == 51 || keyCode == -7) {
				try {
					destroyApp(true);
				} catch (MIDletStateChangeException e) {
					e.printStackTrace();
				}
				notifyDestroyed();
			}
		}
	}
}