Android ViewPager執行個體代碼介紹2。

以前寫過一篇ViewPager：內容content+指示點的Demo；

這篇文章繼續介紹ViewPager：內容content+標題title的Demo。

實現：

原始碼：

布局檔案：activity_main:

f1.xml(體育新聞布局檔案):

f2.xml（娛樂新聞布局檔案）:

f3.xml（軍事新聞布局檔案）：

代碼檔案：

MainActivity：

package com.fragmentdemo11_viewpager;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.os.Bundle;import android.support.v4.view.ViewPager;import android.view.LayoutInflater;import android.view.View;public class MainActivity extends Activity {private ViewPager viewPager;private List title;private List content;private LayoutInflater inflater;private MyViewPagerAdapter adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);viewPager = (ViewPager) findViewById(R.id.viewPager);content = new ArrayList();inflater = LayoutInflater.from(this);/** * 新增內容content */content.add(inflater.inflate(R.layout.f1, null));content.add(inflater.inflate(R.layout.f2, null));content.add(inflater.inflate(R.layout.f3, null));/** * 添加每個內容對應的標題title */title = new ArrayList();title.add("體育新聞");title.add("娛樂新聞");title.add("軍事新聞");adapter = new MyViewPagerAdapter(this,content,title);viewPager.setAdapter(adapter);}}

ViewPager適配器：

package com.fragmentdemo11_viewpager;import java.util.List;import android.content.Context;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.view.View;import android.view.ViewGroup;/** * ViewPager適配器 */public class MyViewPagerAdapter extends PagerAdapter {private Context context;private List content;private List title;public MyViewPagerAdapter(Context context, List content,List title) {this.context = context;this.content = content;this.title = title;}/** * 初始化 */@Overridepublic Object instantiateItem(ViewGroup container, int position) {((ViewPager)container).addView(content.get(position));return content.get(position);}/** * title */@Overridepublic CharSequence getPageTitle(int position) {return title.get(position);}@Overridepublic int getCount() {return content.size();}@Overridepublic boolean isViewFromObject(View arg0, Object arg1) {return arg0 == arg1;}/** * 銷毀 */@Overridepublic void destroyItem(ViewGroup container, int position, Object object) {((ViewPager)container).removeView(content.get(position));}}


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