iconviewmidlet.java

来自「< JavaME核心技术最佳实践>>的全部源代码」· Java 代码 · 共 40 行

package com.j2medev.chapter3;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class IconViewMIDlet extends MIDlet {
    
    private Display display = null;
    private static IconViewMIDlet instance = null;
    private ViewCanvas canvas = null;
    
    public IconViewMIDlet(){
        instance = this;
    }
    
    public void startApp() {
        if(display == null){
            display = Display.getDisplay(this);
            canvas = new ViewCanvas();
        }
        display.setCurrent(canvas);
    }
    //显示displayable对象
    public static void setCurrent(Displayable displayable){
        instance.display.setCurrent(displayable);
    }
    
    public void pauseApp() {
    }
    
    public void destroyApp(boolean unconditional) {
    }
    //将方法exitMIDlet定义为静态方法，方便从任何位置调用
    public static void exitMIDlet(){
        instance.destroyApp(false);
        instance.notifyDestroyed();
        
    }
}