An_viewpager+小圆点

MainActivity

package com.example.monthextwo;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.Log;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;

import com.example.monthextwo.adapter.MyPagerAdatper;
import com.example.monthextwo.bean.DataResult;
import com.example.monthextwo.net.NetUtils;
import com.google.gson.Gson;
import com.nostra13.universalimageloader.core.ImageLoader;


public class MainActivity extends Activity {
    
    ViewPager vp;
    DataResult data;
    List list;
    List list_doc;
    

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        initView();
        initData();
    }


    private void initView() {
        vp = (ViewPager) findViewById(R.id.main_vp);
    }
    
    public void initDoc(){
        LinearLayout ll_dco = (LinearLayout) findViewById(R.id.ll_doc);
        list_doc = new ArrayList();
        if(data != null && data.getResult().getAdvs().size() > 0){
            for (int i = 0; i < data.getResult().getAdvs().size(); i++) {
                ImageView iv = new ImageView(this);
                LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
                params.rightMargin = 10;
                iv.setLayoutParams(params);
                if(i == 0){
                    iv.setBackgroundResource(R.drawable.doc_check);
                }else{
                    iv.setBackgroundResource(R.drawable.doc_uncheck);
                }
                ll_dco.addView(iv);
                list_doc.add(iv);
            }
        }
    }


    private void initData() {
        new AsyncTask(){

            @Override
            protected String doInBackground(String... params) {
                String json = NetUtils.getNetData("http://www.babybuy100.com/API/getShopOverview.ashx");
                Gson gson = new Gson();
                data = gson.fromJson(json, DataResult.class);
                Log.i("=================", data.toString());
                return null;
            }

            @Override
            protected void onPostExecute(String result) {
                initVP();
                super.onPostExecute(result);
            }
            
        }.execute();
    }


    protected void initVP() {
        list = new ArrayList();
        if(data != null && data.getResult().getAdvs().size() > 0){
            for (int i = 0; i < data.getResult().getAdvs().size(); i++) {
                ImageView iv = new ImageView(this);
                iv.setScaleType(ScaleType.FIT_XY);
                ImageLoader.getInstance().displayImage(data.getResult().getAdvs().get(i).getPic(), iv);
                list.add(iv);
            }
            //创建适配器
            MyPagerAdatper myPagerAdatper = new MyPagerAdatper(list);
            vp.setAdapter(myPagerAdatper);
            initDoc();
            
            vp.addOnPageChangeListener(new OnPageChangeListener() {
                
                @Override
                public void onPageSelected(int arg0) {
                    int index = arg0 % list_doc.size();
                    for (int i = 0; i < list_doc.size(); i++) {
                        list_doc.get(i).setBackgroundResource(R.drawable.doc_uncheck);
                    }
                    list_doc.get(index).setBackgroundResource(R.drawable.doc_check);
                }
                
                @Override
                public void onPageScrolled(int arg0, float arg1, int arg2) {
                    // TODO Auto-generated method stub
                    
                }
                
                @Override
                public void onPageScrollStateChanged(int arg0) {
                    // TODO Auto-generated method stub
                    
                }
            });
        }
    }

}

两个shape类型的drawable---xml

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