ViewPaper实现首次进入软件时左右滑屏的软件展示效果

效果如图：

图片资源不再提供，大家可以自己下载，能实现效果即可，看代码：

首先是展示界面的layout：

view.xml

注意，采用的是帧布局，页面切换时的小圆点是在各张图片之上的

<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android=""android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><android.support.v4.view.ViewPagerandroid:id="@+id/viewPager"android:layout_width="fill_parent"android:layout_height="wrap_content" /><RelativeLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="vertical" ><LinearLayoutandroid:id="@+id/viewGroup"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:layout_marginBottom="30dp"android:gravity="center_horizontal"android:orientation="horizontal" ></LinearLayout></RelativeLayout></FrameLayout>

然后是viewPaper中所包含的各个item，，这些是在代码中动态添加，每个item中都包含一张图片，在这里我用了4张图片

item1.xml

<?xml version="1.0" encoding="UTF-8"?><LinearLayout xmlns:android=""android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><ImageViewandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:background="@drawable/show1" ></ImageView></LinearLayout>

item2.xml和item3.xml与1相同，换张图片即可

最后是item4.xml，这个与前三个稍显不同，大家都知道，在最后一张图片展示完后，会出现一个"开始体验",“立即进入”等等的控件，点击之后就进入主界面了，这个我们同样需采用帧布局

<?xml version="1.0" encoding="UTF-8"?><FrameLayout xmlns:android=""android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><ImageViewandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:background="@drawable/show4" ></ImageView><RelativeLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"><ImageViewandroid:id="@+id/go"android:layout_alignParentBottom="true"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_marginBottom="60dp"android:src="@drawable/go" /></RelativeLayout></FrameLayout>

接着就是java代码了

ViewActivity.java

package com.example.viewpaper;import java.util.ArrayList;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.view.Window;import android.widget.ImageButton;import android.widget.ImageView;import android.widget.LinearLayout;public class ViewActivity extends Activity {ViewPager viewPager;ArrayList<View> list;ViewGroup main, group;ImageView imageView;ImageView[] imageViews;LinearLayout go;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);this.requestWindowFeature(Window.FEATURE_NO_TITLE);LayoutInflater inflater = getLayoutInflater();list = new ArrayList<View>();list.add(inflater.inflate(R.layout.item1, null));list.add(inflater.inflate(R.layout.item2, null));list.add(inflater.inflate(R.layout.item3, null));//为item4中的控件添加监听View v = (View)inflater.inflate(R.layout.item4, null);ImageView go=(ImageView)v.findViewById(R.id.go);go.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {Intent intent =new Intent();intent.setClass(ViewActivity.this, MainActivity.class);startActivity(intent);finish();}});list.add(v);imageViews = new ImageView[list.size()];ViewGroup main = (ViewGroup) inflater.inflate(R.layout.view, null);// group是R.layou.main中的负责包裹小圆点的LinearLayout.ViewGroup group = (ViewGroup) main.findViewById(R.id.viewGroup);viewPager = (ViewPager) main.findViewById(R.id.viewPager);for (int i = 0; i < list.size(); i++) {imageView = new ImageView(ViewActivity.this);imageView.setLayoutParams(new LayoutParams(10,10));imageView.setPadding(10, 0, 10, 0);imageViews[i] = imageView;if (i == 0) {// 默认进入程序后第一张图片被选中;imageViews[i].setBackgroundResource(R.drawable.dot_white);} else {imageViews[i].setBackgroundResource(R.drawable.dot_black);}group.addView(imageView);}setContentView(main);viewPager.setAdapter(new MyAdapter());viewPager.setOnPageChangeListener(new MyListener());}class MyAdapter extends PagerAdapter {@Overridepublic int getCount() {return list.size();}@Overridepublic boolean isViewFromObject(View arg0, Object arg1) {return arg0 == arg1;}@Overridepublic int getItemPosition(Object object) {return super.getItemPosition(object);}@Overridepublic void destroyItem(View arg0, int arg1, Object arg2) {((ViewPager) arg0).removeView(list.get(arg1));}@Overridepublic Object instantiateItem(View arg0, int arg1) {((ViewPager) arg0).addView(list.get(arg1));return list.get(arg1);}@Overridepublic void restoreState(Parcelable arg0, ClassLoader arg1) {}@Overridepublic Parcelable saveState() {return null;}@Overridepublic void startUpdate(View arg0) {}@Overridepublic void finishUpdate(View arg0) {}}class MyListener implements OnPageChangeListener {@Overridepublic void onPageScrollStateChanged(int arg0) {}@Overridepublic void onPageScrolled(int arg0, float arg1, int arg2) {}@Overridepublic void onPageSelected(int arg0) {for (int i = 0; i < imageViews.length; i++) {imageViews[arg0].setBackgroundResource(R.drawable.dot_white);if (arg0 != i) {imageViews[i].setBackgroundResource(R.drawable.dot_black);}}}}//按下返回键则跳过软件展示页面直接进入主界面@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK) {Intent intent =new Intent();intent.setClass(ViewActivity.this, MainActivity.class);startActivity(intent);finish();}return false;}}

在最后一个界面点击小飞机，即进入主界面，主界面MainActivity及layout不再贴代码了，大家可以自由写了。。。



我们大都接受的是正面的教育，