<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <solid android:color="#f00"/> <corners android:radius="8dp"/></shape>

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <solid android:color="#88000000"/> <corners android:radius="8dp"/></shape>　

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" >  <View   android:id="@+id/scrollView"  android:layout_width="8dp"  android:layout_height="8dp"  android:layout_margin="3dp"  android:background="@drawable/dot_normal"  /></LinearLayout>

<?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.support.v4.view.ViewPager  android:id="@+id/viewPager"  android:layout_width="match_parent"  android:layout_height="match_parent"> </android.support.v4.view.ViewPager> <LinearLayout  android:id="@+id/ll"  android:layout_marginTop="450dp"  android:orientation="horizontal"  android:gravity="center"  android:layout_width="match_parent"  android:layout_height="20dp"/> </RelativeLayout>

import android.content.Intent;import android.os.AsyncTask;import android.os.Handler;import android.os.Message;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.ImageView;import android.widget.LinearLayout;import com.bwie.bean.SuperClass;import com.bwie.utils.NetWorkUtils;import com.bwie.utils.URLDB;import com.google.gson.Gson;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.ArrayList;import java.util.List;import java.util.Timer;import java.util.TimerTask;public class MainActivity extends AppCompatActivity { private ViewPager viewPager; private Button bt; private LinearLayout layout; private List<SuperClass.ResultBean.DataBean> data; private NetWorkUtils netWorkUtils = new NetWorkUtils();//實例化工具類 private List<ImageView>imgs = new ArrayList<ImageView>();//圖片的集合 private List<View> dots = new ArrayList<View>(); //小圓點集合 private int i = 0; private int dot = 0; private Handler handler = new Handler(){  @Override  public void handleMessage(Message msg) {   super.handleMessage(msg);   viewPager.setCurrentItem(i);   dots.get(dot).setBackgroundResource(R.drawable.dots_normal);   dots.get(i%imgs.size()).setBackgroundResource(R.drawable.dots_focus);   dot=i%imgs.size();  } }; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_main);  //異步網絡請求  new AsyncTask<String,Integer,String>(){   @Override   protected String doInBackground(String... params) {    String json = netWorkUtils.getJsonHttpConnetion(URLDB.URL_IJ);    return json;   }   @Override   protected void onPostExecute(String s) {    super.onPostExecute(s);    SuperClass superClass = new Gson().fromJson(s, SuperClass.class);    data = superClass.getResult().getData();    init();//初始化方法   }  }.execute(); } //初始化方法 private void init() {  viewPager = (ViewPager) findViewById(R.id.viewPager);  layout = (LinearLayout) findViewById(R.id.ll);  getImgs();//獲取圖片  getDots();//獲取小圓點  //viewPager適配器  viewPager.setAdapter(new PagerAdapter() {   @Override   public int getCount() {    return Integer.MAX_VALUE;   }   @Override   public boolean isViewFromObject(View view, Object object) {    return view==object;   }   @Override   public Object instantiateItem(ViewGroup container, int position) {    int i = position % imgs.size();    ImageView imageView = imgs.get(i);    imageView.setScaleType(ImageView.ScaleType.FIT_XY);    container.addView(imageView);    return imageView;   }   @Override   public void destroyItem(ViewGroup container, int position, Object object) {    container.removeView((View) object);   }  });  //設置初始化位置  i = imgs.size()*10;  //得到位置  viewPager.setCurrentItem(i);  //設置第一個圓點為true  dots.get(0).setBackgroundResource(R.drawable.dots_focus);  //timer自動輪播  Timer timer = new Timer();  timer.schedule(new TimerTask() {   @Override   public void run() {    i = viewPager.getCurrentItem() + 1;    handler.sendEmptyMessage(i);   }  },1,2000); } //圖片的方法 private void getImgs() {  for(int i = 0;i<data.size();i++){   List<SuperClass.ResultBean.DataBean.StepsBean> steps = data.get(i).getSteps();   String url = steps.get(0).getImg();   ImageView img = new ImageView(this);   img.setScaleType(ImageView.ScaleType.FIT_XY);   ImageLoader.getInstance().displayImage(url,img);   imgs.add(img);  } } //小圓點的方法 private void getDots() {  for(int i=0;i<imgs.size();i++){   View view = LayoutInflater.from(this).inflate(R.layout.dot_item,null);   View viewById = view.findViewById(R.id.scrollView);   dots.add(viewById);   layout.addView(view);  } }}