keysmidlet.java

来自「J2ME编程的50个例子,适合掌上系统的编程」· Java 代码 · 共 32 行

import javax.microedition.lcdui.Display;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

import demo.MainCanvas;

public class KeysMidlet extends MIDlet {
	//定义MainCanvas的引用
	private static MainCanvas m_MainCanvas;		
	public KeysMidlet() {
		super();	//初始化，继承MIDlet类的构造
	}

	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		m_MainCanvas.Stop();
	}

	protected void pauseApp() {
		m_MainCanvas.Stop();
	}

	protected void startApp() throws MIDletStateChangeException {
		//	程序开始运行，为m_MainCanvas分配存储空间
		try{
			m_MainCanvas = new MainCanvas();
		}
		catch (Exception ex){}
		Display.getDisplay(this).setCurrent(m_MainCanvas);
	}

}