用Fragment、FragmentAdpater实现页面滑动

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<pre name="code" class="html"><strong><em>主XML</em></strong>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_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.PagerTabStrip            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="top" />    </android.support.v4.view.ViewPager>

</RelativeLayout>

</pre><pre name="code" class="html"><strong><em>Color1</em></strong>

<pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#ffffff"    android:orientation="vertical" >    <ImageView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/picture2"        android:layout_alignParentLeft="true"        android:layout_alignParentStart="true" /></RelativeLayout>

主方法

package ustc.myfirstapk;import android.os.Bundle;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentPagerAdapter;import android.support.v4.view.ViewPager;import java.util.ArrayList;import java.util.List;public class MainActivity extends FragmentActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        /**初始化页面*/        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        /**构造适配器*/        List<Fragment> fragments=new ArrayList<Fragment>();        List<String> titleList=new ArrayList<String>();        /**加入队列*/        fragments.add(new ViewFragment(R.layout.color1));        fragments.add(new ViewFragment(R.layout.color2));        fragments.add(new ViewFragment(R.layout.color3));        titleList.add("@我");        titleList.add("分享");        titleList.add("收藏");        /**为ViewPager建立适配器*/        ViewPager vp=(ViewPager)findViewById(R.id.viewPager);        vp.setAdapter(new FragmentAdapter(getSupportFragmentManager(),fragments,titleList));    }    /**适配器*/    class FragmentAdapter extends FragmentPagerAdapter {        private List<Fragment> fragments;  //页面集合        private List<String> titleList;     //标题集合        public FragmentAdapter(FragmentManager fm, List<Fragment> fragments){            super(fm);            this.fragments=fragments;        }        public FragmentAdapter(FragmentManager fm, List<Fragment> fragments, List<String> title) {            super(fm);            this.fragments = fragments;            this.titleList = title;        }        @Override        public CharSequence getPageTitle(int position) {            return (titleList.size() > position) ? titleList.get(position) : "";        }        /**得到页面*/        @Override        public Fragment getItem(int i) {            return (fragments.get(i) == null || fragments.size() == 0) ? null : fragments.get(i);        }        /**获得页面总个数*/        @Override        public int getCount() {            return fragments == null ? 0 : fragments.size();        }    }}

<strong><em>Fragment 定义碎片</em></strong>

<pre name="code" class="java">package ustc.myfirstapk;import android.annotation.SuppressLint;import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;/** * Created by yale  on 14-11-27. * Email : lovel1491@gmail.com */@SuppressLint("ValidFragment")public class ViewFragment extends Fragment {    private int resources;    @SuppressLint("ValidFragment")    public ViewFragment(int arg0){        resources=arg0;    }    /**构图*/    @Override    public View onCreateView(LayoutInflater layoutInflater,ViewGroup container,Bundle savedInstanceState){        View view=layoutInflater.inflate(resources,container,false);        return view;    }}

</pre><pre name="code" class="java">

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