mainmidlet.java

来自「< JAVA ME 手机应用开发技术月案例详解>>一书中的一个」· Java 代码 · 共 49 行

package com.wy.ch17;

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

public class MainMIDlet extends MIDlet {
    private static MainMIDlet main;
    private Display display;
    MainForm mainform;
    boolean paused = false;
    Displayable currentDisplay;

    public MainMIDlet() {
        main = this;
        mainform = new MainForm();
    }

    public void destroyApp(boolean _boolean) throws
            MIDletStateChangeException {
    }

    public void pauseApp() {
        currentDisplay = display.getCurrent();
        while (currentDisplay instanceof Alert) {
            ((Alert) currentDisplay).setTimeout(0);
            currentDisplay = display.getCurrent();
        }
        paused = true;

    }

    
    public void startApp() throws MIDletStateChangeException {
        if (paused) { //如果是从暂停状态回来，则显示原来的 display
            display.setCurrent(currentDisplay);
            paused = false;
        } else {
            display = Display.getDisplay(this);
            display.setCurrent(mainform);
        }

    }

    public static MainMIDlet getInstance() {
        return main;
    }

}