pipemidlet.java

J2ME编程的50个例子,适合掌上系统的编程

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

import demo.MainCanvas;


public class PipeMidlet extends MIDlet {
	public static PipeMidlet midlet;
	private static MainCanvas m_MainCanvas;   //定义MainCanvas的引用
	public PipeMidlet() {	
		super();	//初始化，继承MIDlet类的构造	
		midlet = this;
	}	
	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();  //分配存储空间
		}		
		catch (Exception ex){ }                   //不做错误处理
		//设m_MainCanvas为屏幕的当前画布
		Display.getDisplay(this).setCurrent(m_MainCanvas);	
	}	
	protected void pauseApp() {      
		//由被呼叫或其他原因使程序暂停		
		m_MainCanvas.Stop();
	}	
	protected void destroyApp(boolean arg0) 
					throws MIDletStateChangeException {	
		m_MainCanvas.Stop();
	}
}