这次项目中实现了用户引导滑动图片，到最后一张图片的时候，我认为理想的是同时具备以下两点：

1）用户可以点击上面的“开始使用”这样的按钮可以进入主界面；

2）用户接着滑动下一个图片的手势而进入主界面；

3）用户在引导界面点击返回键的时候直接进入主界面；

增加“开始使用”按钮方式：

可以定义一个layout的xml再加载：一个LinearLayout，里面一个button。默认button是“gone”，

xml如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/guide_item"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="5" /><Buttonandroid:id="@+id/start"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="@string/guide_start"android:visibility="gone" ></Button><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="1" /></LinearLayout>

button上下增加了textview，我是为了控制button在整个界面的位置。

引导的图片是其背景即可。

实现如下：

guide_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><android.support.v4.view.ViewPagerandroid:id="@+id/guide_view"android:layout_width="fill_parent"android:layout_height="fill_parent" /></LinearLayout>

GuideActivity.java：

/*** 引导界面* @author maria* 2012-07-19*/
package com.maria.test;import java.util.ArrayList;
import java.util.List;
import com.trunkbow.talker.R;
import android.app.Activity;
import android.content.Context;
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.util.DisplayMetrics;
import android.view.GestureDetector;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;public class GuideActivity extends Activity {private ViewPager viewPager;private List<View> mImageViews; // 滑动的图片集合private int[] imageResId; // 图片IDprivate int currentItem = 0; // 当前图片的索引号private GestureDetector gestureDetector; // 用户滑动/** 记录当前分页ID */private int flaggingWidth;// 互动翻页所需滚动的长度是当前屏幕宽度的1/3@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.guide_activity);gestureDetector = new GestureDetector(new GuideViewTouch());// 获取分辨率DisplayMetrics dm = new DisplayMetrics();getWindowManager().getDefaultDisplay().getMetrics(dm);flaggingWidth = dm.widthPixels / 3;imageResId = new int[] { R.drawable.guide_1, R.drawable.guide_2 };mImageViews = new ArrayList<View>();// 初始化图片资源LayoutInflater viewInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);// 0View convertView0 = viewInflater.inflate(R.layout.guide_item, null);LinearLayout linearLayout0 = (LinearLayout) convertView0.findViewById(R.id.guide_item);linearLayout0.setBackgroundResource(imageResId[0]);mImageViews.add(linearLayout0);// 1View convertView1 = viewInflater.inflate(R.layout.guide_item, null);LinearLayout linearLayout1 = (LinearLayout) convertView1.findViewById(R.id.guide_item);linearLayout1.setBackgroundResource(imageResId[1]);Button btn = (Button) convertView1.findViewById(R.id.start);btn.setVisibility(View.VISIBLE);btn.setOnClickListener(new OnClickListener() {public void onClick(View v) {// TODO Auto-generated method stubGoToMainActivity();}});mImageViews.add(linearLayout1);viewPager = (ViewPager) findViewById(R.id.guide_view);viewPager.setAdapter(new MyAdapter());// 设置填充ViewPager页面的适配器// 设置一个监听器，当ViewPager中的页面改变时调用viewPager.setOnPageChangeListener(new MyPageChangeListener());}@Overridepublic boolean dispatchTouchEvent(MotionEvent event) {if (gestureDetector.onTouchEvent(event)) {event.setAction(MotionEvent.ACTION_CANCEL);}return super.dispatchTouchEvent(event);}private class GuideViewTouch extends SimpleOnGestureListener {@Overridepublic boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY) {if (currentItem == 1) {if (Math.abs(e1.getX() - e2.getX()) > Math.abs(e1.getY()- e2.getY())&& (e1.getX() - e2.getX() <= (-flaggingWidth) || e1.getX() - e2.getX() >= flaggingWidth)) {if (e1.getX() - e2.getX() >= flaggingWidth) {GoToMainActivity();return true;}}}return false;}}/*** 进入主界面*/void GoToMainActivity() {Intent i = new Intent(GuideActivity.this, MainActivivty.class);startActivity(i);finish();}/*** 当ViewPager中页面的状态发生改变时调用* * @author Administrator* */private class MyPageChangeListener implements OnPageChangeListener {/*** This method will be invoked when a new page becomes selected.* position: Position index of the new selected page.*/public void onPageSelected(int position) {currentItem = position;}public void onPageScrollStateChanged(int arg0) {}public void onPageScrolled(int arg0, float arg1, int arg2) {}}/*** 填充ViewPager页面的适配器* * @author Administrator* */private class MyAdapter extends PagerAdapter {@Overridepublic int getCount() {return imageResId.length;}@Overridepublic Object instantiateItem(View arg0, int arg1) {((ViewPager) arg0).addView(mImageViews.get(arg1));return mImageViews.get(arg1);}@Overridepublic void destroyItem(View arg0, int arg1, Object arg2) {((ViewPager) arg0).removeView((View) arg2);}@Overridepublic boolean isViewFromObject(View arg0, Object arg1) {return arg0 == arg1;}@Overridepublic void restoreState(Parcelable arg0, ClassLoader arg1) {}@Overridepublic Parcelable saveState() {return null;}@Overridepublic void startUpdate(View arg0) {}@Overridepublic void finishUpdate(View arg0) {}}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {// TODO Auto-generated method stubif (keyCode == KeyEvent.KEYCODE_BACK) {GoToMainActivity();return false;}return super.onKeyDown(keyCode, event);}}

/**
* @author 张兴业
* 邮箱：xy-zhang#163.com
* android开发进阶群：278401545
*
*/