Android开发中ViewPager实现导航页和引导页效果（总结）

ViewPager是一个视图滑动切换工具。可以用来做APP启动导航页&＃xff0c;填充页面的话&＃xff0c;需要自定义一个PagerAdapter数据适配器&＃xff0c;和用ListView时有点类似。&＃xff08;ListView是自定义一个BaseAdapter数据适配器&＃xff09;

效果如下&＃xff1a;

1、数据适配器MyPagerAdapter.java的代码如下&＃xff1a;

package com.deepreality.viewpaperdemo;import android.support.annotation.NonNull;
import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;import java.util.ArrayList;public class MyPagerAdapter extends PagerAdapter {private ArrayList viewLists;public MyPagerAdapter() {super();}public MyPagerAdapter(ArrayList viewLists) {super();this.viewLists &＃61; viewLists;}&＃64;Overridepublic int getCount() {return viewLists.size();}&＃64;Overridepublic boolean isViewFromObject(&＃64;NonNull View view, &＃64;NonNull Object object) {return view &＃61;&＃61; object;}&＃64;Overridepublic Object instantiateItem(ViewGroup container, int position) {container.addView(viewLists.get(position));return viewLists.get(position);}&＃64;Overridepublic void destroyItem(ViewGroup container, int position, Object object) {container.removeView(viewLists.get(position));}
}


2、布局文件activity_main.xml的代码如下&＃xff1a;

备注&＃xff1a;四个页面的布局&＃xff0c;自行设计即可。

3、数据处理操作MainActivity.java的代码如下&＃xff1a;

package com.deepreality.viewpaperdemo;import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;import java.util.ArrayList;public class MainActivity extends AppCompatActivity {private ViewPager vpGuiding;private MyPagerAdapter myPagerAdapter;private MyPagerWithTitleAdapter myPagerWithTitleAdapter;private ArrayList viewArrayList;private ArrayList titleArrayList;private String[] strTitles &＃61; new String[]{"第一页", "第二页", "第三页", "第四页"};&＃64;Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);vpGuiding &＃61; findViewById(R.id.main_vpGuiding);//viewPagerWithTitleLookLike();viewPagerNormalLookLike();}//默认效果的public void viewPagerNormalLookLike() {//List集合赋值&＃xff0c;用于给适配器传参数viewArrayList &＃61; new ArrayList();LayoutInflater layoutInflater &＃61; LayoutInflater.from(MainActivity.this);viewArrayList.add(layoutInflater.inflate(R.layout.item_viewpaper_one, null, false));viewArrayList.add(layoutInflater.inflate(R.layout.item_viewpaper_two, null, false));viewArrayList.add(layoutInflater.inflate(R.layout.item_viewpaper_three, null, false));viewArrayList.add(layoutInflater.inflate(R.layout.item_viewpaper_four, null, false));//适配器赋值myPagerAdapter &＃61; new MyPagerAdapter(viewArrayList);//绑定数据适配器vpGuiding.setAdapter(myPagerAdapter);}//带有标题效果的public void viewPagerWithTitleLookLike() {//List集合赋值&＃xff0c;用于给适配器传参数viewArrayList &＃61; new ArrayList();titleArrayList &＃61; new ArrayList();LayoutInflater layoutInflater &＃61; LayoutInflater.from(MainActivity.this);viewArrayList.add(layoutInflater.inflate(R.layout.item_viewpaper_one, null, false));viewArrayList.add(layoutInflater.inflate(R.layout.item_viewpaper_two, null, false));viewArrayList.add(layoutInflater.inflate(R.layout.item_viewpaper_three, null, false));viewArrayList.add(layoutInflater.inflate(R.layout.item_viewpaper_four, null, false));for (String str : strTitles) {titleArrayList.add(str);}//适配器赋值myPagerWithTitleAdapter &＃61; new MyPagerWithTitleAdapter(viewArrayList, titleArrayList);//绑定数据适配器vpGuiding.setAdapter(myPagerWithTitleAdapter);}
}


备注&＃xff1a;其中包含两种样式的方法。&＃xff08;不带标题和带标题&＃xff09;

另外&＃xff0c;带标题的话&＃xff0c;需要重写PagerAdapter的getPageTitle(  )方法&＃xff0c;用来设置每个页面的标题。