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();}}}}