/**

 * @Title: HelpActivity.java

 * @Package com.konka.Home

 * @version V1.0

 */

package com.example.help;

import java.util.ArrayList;

import java.util.List;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.os.Parcelable;

import android.support.v4.view.PagerAdapter;

import android.support.v4.view.ViewPager;

import android.support.v4.view.ViewPager.OnPageChangeListener;

import android.view.KeyEvent;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.view.ViewGroup.LayoutParams;

import android.widget.AbsoluteLayout;

import android.widget.ImageButton;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.RelativeLayout;

/**

 * @ClassName: HelpActivity

 * @author llb

 *

 */

public class HelpActivity extends Activity implements OnClickListener,

        OnPageChangeListener {

    private static final String TAG = HelpActivity.class.getSimpleName();

    private ViewPager viewPager;

    private ArrayList<View> pageViews;

    private ViewGroup main, group;

    private ImageView[] dots;

    private ImageButton imgbtn;

    private int currentIndex;

    private ViewPagerAdapter vpAdapter;

    private ImageView imageView;

    private static final int GO_BTN = ;

    private static final int[] help_pics = { R.drawable.guide0,

            R.drawable.guide1, R.drawable.guide2, R.drawable.guide_cooperate };

    /**

     * @param savedInstanceState

     * @see android.app.Activity#onCreate(android.os.Bundle)

     */

    protected void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        pageViews = new ArrayList<View>();

        LayoutInflater inflater = getLayoutInflater();

        main = (ViewGroup) inflater.inflate(R.layout.help, null);

        LinearLayout.LayoutParams mParams = new LinearLayout.LayoutParams(

                LinearLayout.LayoutParams.WRAP_CONTENT,

                LinearLayout.LayoutParams.WRAP_CONTENT);

        for (int i = ; i < help_pics.length; i++) {

            RelativeLayout rl = new RelativeLayout(this);

            rl.setLayoutParams(mParams);

            rl.setBackgroundResource(help_pics[i]);

            if (i == (help_pics.length - )) {

                imgbtn = new ImageButton(this);

                imgbtn.setBackgroundResource(R.drawable.help_go_btn_selector);

                imgbtn.setOnClickListener(this);

                imgbtn.setTag(GO_BTN);

                RelativeLayout.LayoutParams lp1 = new RelativeLayout.LayoutParams(

                        RelativeLayout.LayoutParams.WRAP_CONTENT,

                        RelativeLayout.LayoutParams.WRAP_CONTENT);

                lp1.bottomMargin = ;

                lp1.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);

                lp1.addRule(RelativeLayout.CENTER_HORIZONTAL,

                        RelativeLayout.TRUE);

                rl.addView(imgbtn, lp1);

            }

            pageViews.add(rl);

        }

        /*

         * RelativeLayout rl = new RelativeLayout(this);

         * rl.setLayoutParams(mParams); pageViews.add(rl);

         */

        group = (ViewGroup) main.findViewById(R.id.viewGroup);

        viewPager = (ViewPager) main.findViewById(R.id.guidePages);

        vpAdapter = new ViewPagerAdapter(pageViews);

        viewPager.setAdapter(vpAdapter);

        viewPager.setOnPageChangeListener(this);

        initDots();

        setContentView(main);

    }

    private void initDots() {

        // TODO Auto-generated method stub

        dots = new ImageView[help_pics.length];

        for (int i = ; i < help_pics.length; i++) {

            imageView = new ImageView(HelpActivity.this);

            imageView.setLayoutParams(new LayoutParams(

                    ViewGroup.LayoutParams.WRAP_CONTENT,

                    ViewGroup.LayoutParams.WRAP_CONTENT));

            imageView.setMaxHeight();

            imageView.setMaxWidth();

            imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);

            imageView.setAdjustViewBounds(true);

            imageView.setPadding(, , , );

            imageView.setImageResource(R.drawable.dot);

            dots[i] = imageView;

            dots[i].setEnabled(false);

            dots[i].setTag(i);

            dots[i].setOnClickListener(this);

            group.addView(dots[i]);

        }

        currentIndex = ;

        dots[currentIndex].setEnabled(true);

    }

    private void setCurView(int position) {

        if (position <  || position >= help_pics.length) {

            return;

        }

        viewPager.setCurrentItem(position);

    }

    private void setCurDot(int positon) {

        if (positon <  || positon > help_pics.length -

                || currentIndex == positon) {

            return;

        }

        dots[positon].setEnabled(true);

        dots[currentIndex].setEnabled(false);

        currentIndex = positon;

    }

    public class ViewPagerAdapter extends PagerAdapter {

        private List<View> views;

        public ViewPagerAdapter(List<View> views) {

            this.views = views;

        }

        @Override

        public void destroyItem(View arg0, int arg1, Object arg2) {

            ((ViewPager) arg0).removeView(views.get(arg1));

        }

        @Override

        public void finishUpdate(View arg0) {

            // TODO Auto-generated method stub

        }

        public int getCount() {

            if (views != null) {

                return views.size();

            }

            return ;

        }

        // 锟斤拷始锟斤拷arg1位锟矫的斤拷锟斤拷

        public Object instantiateItem(View arg0, int arg1) {

            ((ViewPager) arg0).addView(views.get(arg1));

            return views.get(arg1);

        }

        public boolean isViewFromObject(View arg0, Object arg1) {

            return (arg0 == arg1);

        }

        public void restoreState(Parcelable arg0, ClassLoader arg1) {

            // TODO Auto-generated method stub

        }

        public Parcelable saveState() {

            // TODO Auto-generated method stub

            return null;

        }

        public void startUpdate(View arg0) {

            // TODO Auto-generated method stub

        }

    }

    /**

     *

     * @param arg0

     * @see android.support.v4.view.ViewPager.OnPageChangeListener#onPageScrollStateChanged(int)

     */

    public void onPageScrollStateChanged(int arg0) {

        // TODO Auto-generated method stub

    }

    /**

     * (锟斤拷 Javadoc) Title: onPageScrolled Description:

     *

     * @param arg0

     * @param arg1

     * @param arg2

     * @see android.support.v4.view.ViewPager.OnPageChangeListener#onPageScrolled(int,

     *      float, int)

     */

    public void onPageScrolled(int arg0, float arg1, int arg2) {

        // TODO Auto-generated method stub

    }

    /**

     *

     * @param arg0

     * @see android.support.v4.view.ViewPager.OnPageChangeListener#onPageSelected(int)

     */

    public void onPageSelected(int arg0) {

        // TODO Auto-generated method stub

        /*

         * if(arg0 == pageViews.size()-1){ viewPager.setCurrentItem (arg0 - 1);

         * ToHome(); return; }

         */

        setCurDot(arg0);

    }

    /**

     * (锟斤拷 Javadoc) Title: onClick Description:

     *

     * @param v

     * @see android.view.View.OnClickListener#onClick(android.view.View)

     */

    public void onClick(View v) {

        // TODO Auto-generated method stub

        int position = (Integer) v.getTag();

        if (position == GO_BTN) {

            ToHome();

        } else {

            setCurView(position);

            setCurDot(position);

        }

    }

    public void ToHome() {

         Intent intentHome = new Intent(HelpActivity.this, HomeActivity.class);

         HelpActivity.this.startActivity(intentHome);

         finish();

    }

    /**

     *

     * @param keyCode

     * @param event

     * @return

     * @see android.app.Activity#onKeyDown(int, android.view.KeyEvent)

     */

    public boolean onKeyDown(int keyCode, KeyEvent event) {

        // TODO Auto-generated method stub

        finish();

        return super.onKeyDown(keyCode, event);

    }

}

<?xml version="1.0" encoding="utf-8"?>

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <android.support.v4.view.ViewPager

        android:id="@+id/guidePages"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content">

    </android.support.v4.view.ViewPager>

    <RelativeLayout

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:orientation="vertical" >

        <LinearLayout

            android:id="@+id/viewGroup"

            android:layout_width="fill_parent"

            android:layout_height="wrap_content"

            android:layout_alignParentBottom="true"

            android:layout_marginBottom="10dp"

            android:gravity="center_horizontal"

            android:orientation="horizontal" >

        </LinearLayout>

    </RelativeLayout>

</FrameLayout>