package com.lxt008;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageSwitcher;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.ViewSwitcher.ViewFactory;public class Activity01 extends Activity implements OnClickListener,ViewFactory{    /* 所有要显示的图片资源索引 */    private static final Integer[] imagelist =     {         R.drawable.img1,         R.drawable.img2,         R.drawable.img3,        R.drawable.img4,         R.drawable.img5,         R.drawable.img6,         R.drawable.img7,         R.drawable.img8,     };         //创建ImageSwitcher对象    private ImageSwitcher            m_Switcher;    //索引    private static int                index            = 0;    //“下一页”按钮ID    private static final int        BUTTON_DWON_ID    = 0x123456;    //“上一页”按钮ID    private static final int        BUTTON_UP_ID    = 0x123457;    //ImageSwitcher对象的ID    private static final int        SWITCHER_ID        = 0x123458;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        //创建一个线性布局LinearLayout        LinearLayout main_view = new LinearLayout(this);        //创建ImageSwitcher对象        m_Switcher = new ImageSwitcher(this);        //在线性布局中添加ImageSwitcher视图        main_view.addView(m_Switcher);        //设置ImageSwitcher对象的ID        m_Switcher.setId(SWITCHER_ID);        //设置ImageSwitcher对象的数据源        m_Switcher.setFactory(this);        m_Switcher.setImageResource(imagelist[index]);                //设置显示上面创建的线性布局        setContentView(main_view);        //创建“下一张”按钮        Button next = new Button(this);        next.setId(BUTTON_DWON_ID);        next.setText("下一张");        next.setOnClickListener(this);        LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(100, 100);        main_view.addView(next, param);        //创建“上一张”按钮        Button pre = new Button(this);        pre.setId(BUTTON_UP_ID);        pre.setText("上一张");        pre.setOnClickListener(this);        main_view.addView(pre, param);    }    //事件监听、处理    public void onClick(View v)    {        switch (v.getId())        {            //下一页            case BUTTON_DWON_ID:                index++;                if (index >= imagelist.length)                {                    index = 0;                }                //ImageSwitcher对象资源索引                m_Switcher.setImageResource(imagelist[index]);                break;            //上一页            case BUTTON_UP_ID:                index--;                if (index < 0)                {                    index = imagelist.length - 1;                }                //ImageSwitcher对象资源索引                m_Switcher.setImageResource(imagelist[index]);                break;            default:                break;        }    }    public View makeView()    {        //将所有图片通过ImageView来显示        return new ImageView(this);    }}