viewpager 动态加载 和小圆点

package com.baway.test;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;import java.util.ArrayList;import java.util.List;import java.util.Timer;import java.util.TimerTask;import com.baway.adapter.MyBaseAdapter;import com.baway.data.DataUser;import com.baway.data.Like_user_list;import com.google.gson.Gson;import com.lidroid.xutils.BitmapUtils;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.support.v4.view.ViewPager.OnPageChangeListener;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.ImageView;import android.widget.AdapterView.OnItemClickListener;import android.widget.LinearLayout;import android.widget.LinearLayout.LayoutParams;public class ViewPagerActivity extends Activity implements OnPageChangeListener{    private ViewPager viewPager;    private List<Like_user_list> list;    private BitmapUtils bitmapUtils;    private List<ImageView> imagelist;    private int intExtra;    private int count=0;    private LinearLayout linearLayout;    private int lastindex=0;    Handler h=new Handler(){        @Override        public void handleMessage(Message msg) {            // TODO Auto-generated method stub            viewPager.setCurrentItem(count);        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        // TODO Auto-generated method stub        super.onCreate(savedInstanceState);        setContentView(R.layout.viewpager);                viewPager=(ViewPager) findViewById(R.id.viewpager);        linearLayout=(LinearLayout) findViewById(R.id.ll_layout);        bitmapUtils=new BitmapUtils(getApplicationContext());        imagelist=new ArrayList<ImageView>();        Intent in=getIntent();        list=new ArrayList<Like_user_list>();//        list = (List<Like_user_list>) in.getSerializableExtra("a");        String[] s = in.getStringArrayExtra("a");        Like_user_list l=null;        for(int i=0;i<s.length;i++){            l=new Like_user_list();            l.setHead_img(s[i]);            list.add(l);        }                                for(int i=0;i<list.size();i++){            ImageView imageView=new ImageView(getApplicationContext());            bitmapUtils.display(imageView, list.get(i).getHead_img());            imagelist.add(imageView);                        ImageView   im=new   ImageView(getApplicationContext());                        im.setBackgroundResource(R.drawable.shape);                                    LayoutParams   layoutParams=new   LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);                        layoutParams.leftMargin=15;                        im.setLayoutParams(layoutParams);                        linearLayout.addView(im);                        if(i==0){                                im.setEnabled(true);                            }else{                im.setEnabled(false);            }        }        viewPager.setAdapter(adapter);                        Timer t=new Timer();        t.schedule(new TimerTask() {                        @Override            public void run() {                // TODO Auto-generated method stub                count++;                if(count==list.size()){                    count=0;                }                h.sendEmptyMessage(0);            }        }, 1000, 1000);        viewPager.setOnPageChangeListener(this);    }    PagerAdapter adapter=new PagerAdapter() {        @Override        public Object instantiateItem(ViewGroup container, int position) {            // TODO Auto-generated method stub            container.addView(imagelist.get(position));            return imagelist.get(position);        }        @Override        public boolean isViewFromObject(View arg0, Object arg1) {            // TODO Auto-generated method stub            return arg0==arg1;        }                @Override        public int getCount() {            // TODO Auto-generated method stub            return imagelist.size();        }        @Override        public void destroyItem(ViewGroup container, int position, Object object) {            // TODO Auto-generated method stub            container.removeView(imagelist.get(position));        }    };    @Override    public void onPageScrollStateChanged(int arg0) {        // TODO Auto-generated method stub            }    @Override    public void onPageScrolled(int arg0, float arg1, int arg2) {        // TODO Auto-generated method stub            }    @Override    public void onPageSelected(int arg0) {        // TODO Auto-generated method stub        int index=arg0 % imagelist.size();        //将当前指示灯改为true        linearLayout.getChildAt(index).setEnabled(true);        linearLayout.getChildAt(lastindex).setEnabled(false);        lastindex=index;    }}

布局文件

<?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:orientation="vertical" >          <LinearLayout        android:id="@+id/ll_layout"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:layout_alignParentBottom="true"        android:layout_centerHorizontal="true"        android:layout_margin="5dp" >    </LinearLayout>    <android.support.v4.view.ViewPager        android:id="@+id/viewpager"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_above="@id/ll_layout" >    </android.support.v4.view.ViewPager></RelativeLayout>

三个drawable文件

end_false.xml文件

<shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="oval">    <size android:width="10dp" android:height="10dp"/>    <solid android:color="#808080"/></shape>

end_true.xml文件

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">        <size android:width="10dp" android:height="10dp"/>    <solid android:color="#ffffff"/></shape>

shape.xml文件

<selector xmlns:android="http://schemas.android.com/apk/res/android" >    <item android:state_enabled="true" android:drawable="@drawable/end_true"></item>    <item android:state_enabled="false" android:drawable="@drawable/end_false"></item></selector>