tabbedpanedemo.java

J2ME lwuit实现屏幕九宫图,功能十分强大

/*
 * Copyright ?2008 Sun Microsystems, Inc. All rights reserved.
 * Use is subject to license terms.
 *
 */
package com.sun.lwuit.uidemo;

import com.sun.lwuit.Button;
import com.sun.lwuit.ButtonGroup;
import com.sun.lwuit.Command;
import com.sun.lwuit.Container;
import com.sun.lwuit.Dialog;
import com.sun.lwuit.Form;
import com.sun.lwuit.Label;
import com.sun.lwuit.RadioButton;
import com.sun.lwuit.TabbedPane;
import com.sun.lwuit.TextArea;
import com.sun.lwuit.TextField;
import com.sun.lwuit.events.ActionEvent;
import com.sun.lwuit.events.ActionListener;
import com.sun.lwuit.layouts.BorderLayout;
import com.sun.lwuit.layouts.BoxLayout;

/**
 * 本例演示如何使用Tabbed、Text控件
 */
public class TabbedPaneDemo implements ActionListener {
    public Form form = new Form("TabbedPaneDemo");
    private  Command backCommand = new Command("Back", 1);
    final TextArea title ;
    final TextArea body;
    TabbedPane tp = null;

    TabbedPaneDemo() {
        form.setLayout(new BorderLayout());
        form.setScrollable(false);
        form.addCommand(backCommand);
        form.setCommandListener(this);
        tp = new TabbedPane();

        //addTab可以为页面添加控件，也可以是Container（相当于容器的控件）
        tp.addTab("Tab 1", new Label("Welcome to TabbedPane demo!"));

        //---------------------第二页的内容------------------------------------
        //Container就是一个控件，只不过相当于容器，建议每页有自己的事件处理
        Container radioButtonsPanel = new Container(new BoxLayout(BoxLayout.Y_AXIS));

        RadioButton topRB = new RadioButton("Top");
        RadioButton LeftRB = new RadioButton("Left");
        RadioButton BottomRB = new RadioButton("Bottom");
        RadioButton RightRB = new RadioButton("Right");

        RadioListener rbListener = new RadioListener();//自定义接收事件的类
        topRB.addActionListener(rbListener);
        LeftRB.addActionListener(rbListener);
        BottomRB.addActionListener(rbListener);
        RightRB.addActionListener(rbListener);

        ButtonGroup group1 = new ButtonGroup();
        group1.add(topRB);
        group1.add(LeftRB);
        group1.add(BottomRB);
        group1.add(RightRB);

        radioButtonsPanel.addComponent(new Label("Please choose a tab placement direction:"));
        radioButtonsPanel.addComponent(topRB);
        radioButtonsPanel.addComponent(LeftRB);
        radioButtonsPanel.addComponent(BottomRB);
        radioButtonsPanel.addComponent(RightRB);

        tp.addTab("Tab 2", radioButtonsPanel);

        //----------------------第三页的内容----------------------------------
        //Container就是一个控件，只不过相当于容器，建议每页有自己的事件处理
        Container TextPanel = new Container(new BoxLayout(BoxLayout.Y_AXIS));
        ButtonListener txtListener = new ButtonListener();//按钮事件处理

        title = new TextField("Title");   
        title.getStyle().setBgTransparency(100);

        body = new TextArea("This is the body of the alert....", 3, 20);
        body.getStyle().setBgTransparency(100);

        final Button ShowMessage =new Button("ok");
        ShowMessage.getStyle().setBgTransparency(100);
        ShowMessage.addActionListener(txtListener);

        TextPanel.addComponent(title);
        TextPanel.addComponent(body);
        TextPanel.addComponent(ShowMessage);


        tp.addTab("Tab 3", TextPanel);

        form.addComponent("Center", tp);
    }

    /** 监听 radio buttons事件 */
    class RadioListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            String title = ((RadioButton) e.getSource()).getText();
            Dialog.show("TabbedPaneDemo", title, "OK", null);
        }
    }

    /** 监听 buttons事件 */
    class ButtonListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
           Dialog.show(title.getText(), body.getText(), "OK", null);
        }
    }

    /** 监听command事件 */
    public void actionPerformed(ActionEvent arg0) {
        UIDemoMIDlet.backToMainMenu();
    }
}