Android ViewPager的学习_《android:viewpager学习 -哈希表》-优快云博客

本文链接：https://blog.youkuaiyun.com/qwiwuqo/article/details/8182610

本文介绍了一个使用Android中的ViewPager和PagerTitleStrip实现多页显示的例子。通过LayoutInflater加载不同的布局作为分页内容，并通过PagerAdapter进行数据填充及页面切换效果的实现。

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Android ViewPager的学习

<?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:orientation="vertical" >

    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center" >

        <android.support.v4.view.PagerTitleStrip
            android:id="@+id/pagertitle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="top" />
    </android.support.v4.view.ViewPager>

</LinearLayout>

其中ViewPager为多页显示控件，PagerTitleStrip用于显示当前页面的标题

package com.ns.pager;

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.PagerTitleStrip;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;

public class PagerTitleDemoActivity extends Activity {
    /** Called when the activity is first created. */
     private ViewPager mViewPager;
     private PagerTitleStrip mPagerTitleStrip;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mViewPager = (ViewPager)findViewById(R.id.viewpager);
        mPagerTitleStrip = (PagerTitleStrip)findViewById(R.id.pagertitle);
       
        //将要分页显示的View装入数组中
        LayoutInflater mLi = LayoutInflater.from(this);
        View view1 = mLi.inflate(R.layout.view1, null);
        View view2 = mLi.inflate(R.layout.view2, null);
        View view3 = mLi.inflate(R.layout.view3, null);
       
        //每个页面的Title数据
        final ArrayList<View> views = new ArrayList<View>();
        views.add(view1);
        views.add(view2);
        views.add(view3);
       
        final ArrayList<String> titles = new ArrayList<String>();
        titles.add("tab1");
        titles.add("tab2");
        titles.add("tab3");
       
        //填充ViewPager的数据适配器
        PagerAdapter mPagerAdapter = new PagerAdapter() {
              
               @Override
               public boolean isViewFromObject(View arg0, Object arg1) {
                    return arg0 == arg1;
               }
              
               @Override
               public int getCount() {
                    return views.size();
               }

               @Override
               public void destroyItem(View container, int position, Object object) {
                    ((ViewPager)container).removeView(views.get(position));
               }

               @Override
               public CharSequence getPageTitle(int position) {
                    return titles.get(position);
               }

               @Override
               public Object instantiateItem(View container, int position) {
                    ((ViewPager)container).addView(views.get(position));
                    return views.get(position);
               }
          };
         
          mViewPager.setAdapter(mPagerAdapter);
    }
}