Android 图片轮播（最简单的）

布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
 
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="300dip" >
 
        <android.support.v4.view.ViewPager
            android:id="@+id/vp"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
 
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="35dip"
            android:layout_gravity="bottom"
            android:background="#33000000"
            android:gravity="center"
            android:orientation="vertical" >
 
            <TextView
                android:id="@+id/title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="图片标题"
                android:textColor="@android:color/white" />
 
            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="3dip"
                android:orientation="horizontal" >
 
                <View
                    android:id="@+id/dot_0"
                    android:layout_width="5dip"
                    android:layout_height="5dip"
                    android:layout_marginLeft="2dip"
                    android:layout_marginRight="2dip"
                    android:background="@drawable/dot_yes"/>
 
                <View
                    android:id="@+id/dot_1"
                    android:layout_width="5dip"
                    android:layout_height="5dip"
                    android:layout_marginLeft="2dip"
                    android:layout_marginRight="2dip"
                    android:background="@drawable/dot_no"/>
                <View
                    android:id="@+id/dot_2"
                    android:layout_width="5dip"
                    android:layout_height="5dip"
                    android:layout_marginLeft="2dip"
                    android:layout_marginRight="2dip"
                    android:background="@drawable/dot_no"/>
                <View
                    android:id="@+id/dot_3"
                    android:layout_width="5dip"
                    android:layout_height="5dip"
                    android:layout_marginLeft="2dip"
                    android:layout_marginRight="2dip"
                    android:background="@drawable/dot_no"/>
                <View
                    android:id="@+id/dot_4"
                    android:layout_width="5dip"
                    android:layout_height="5dip"
                    android:layout_marginLeft="2dip"
                    android:layout_marginRight="2dip"
                    android:background="@drawable/dot_no"/>
 
            </LinearLayout>
        </LinearLayout>
    </FrameLayout>
 
</RelativeLayout>

在一个fragment中使用

package com.example.administrator.yunphone.View;
 
import android.app.Fragment;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.Nullable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
 
import com.example.administrator.yunphone.R;
 
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
 
/**
 * Created by Administrator on 2016/7/13.
 */
public class HomeFragment extends Fragment {
 
    private View mView;
    private ViewPager mViewPaper;
    private List<ImageView> images;
    private List<View> dots;
    private int currentItem;
    //记录上一次点的位置
    private int oldPosition = 0;
    //存放图片的id
    private int[] imageIds = new int[]{
            R.drawable.home_bg,
            R.drawable.home_bg,
            R.drawable.home_bg,
            R.drawable.home_bg,
            R.drawable.home_bg
    };
    //存放图片的标题
    private String[] titles = new String[]{
            "轮播1",
            "轮播2",
            "轮播3",
            "轮播4",
            "轮播5"
    };
    private TextView title;
    private ViewPagerAdapter adapter;
    private ScheduledExecutorService scheduledExecutorService;
 
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 
        mView=inflater.inflate(R.layout.fragment_home_layout, null);
        setView();
        return mView;
    }
    private void setView(){
        mViewPaper = (ViewPager)mView.findViewById(R.id.vp);
 
        //显示的图片
        images = new ArrayList<ImageView>();
        for(int i = 0; i < imageIds.length; i++){
            ImageView imageView = new ImageView(getActivity());
            imageView.setBackgroundResource(imageIds[i]);
            images.add(imageView);
        }
        //显示的小点
        dots = new ArrayList<View>();
        dots.add(mView.findViewById(R.id.dot_0));
        dots.add(mView.findViewById(R.id.dot_1));
        dots.add(mView.findViewById(R.id.dot_2));
        dots.add(mView.findViewById(R.id.dot_3));
        dots.add(mView.findViewById(R.id.dot_4));
 
        title = (TextView) mView.findViewById(R.id.title);
        title.setText(titles[0]);
 
        adapter = new ViewPagerAdapter();
        mViewPaper.setAdapter(adapter);
 
        mViewPaper.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
 
            @Override
            public void onPageSelected(int position) {
                title.setText(titles[position]);
                dots.get(position).setBackgroundResource(R.drawable.dot_yes);
                dots.get(oldPosition).setBackgroundResource(R.drawable.dot_no);
 
                oldPosition = position;
                currentItem = position;
            }
 
            @Override
            public void onPageScrolled(int arg0, float arg1, int arg2) {
 
            }
 
            @Override
            public void onPageScrollStateChanged(int arg0) {
 
            }
        });
    }
 
    /*定义的适配器*/
    public class ViewPagerAdapter extends PagerAdapter{
 
        @Override
        public int getCount() {
            return images.size();
        }
 
        @Override
        public boolean isViewFromObject(View arg0, Object arg1) {
            return arg0 == arg1;
        }
 
        @Override
        public void destroyItem(ViewGroup view, int position, Object object) {
            // TODO Auto-generated method stub
//          super.destroyItem(container, position, object);
//          view.removeView(view.getChildAt(position));
//          view.removeViewAt(position);
            view.removeView(images.get(position));
        }
 
        @Override
        public Object instantiateItem(ViewGroup view, int position) {
            // TODO Auto-generated method stub
            view.addView(images.get(position));
            return images.get(position);
        }
 
    }
 
    /**
     * 利用线程池定时执行动画轮播
     */
    @Override
    public void onStart() {
        // TODO Auto-generated method stub
        super.onStart();
        scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
        scheduledExecutorService.scheduleWithFixedDelay(
                new ViewPageTask(),
                2,
                2,
                TimeUnit.SECONDS);
    }
 
    /**
     * 图片轮播任务
     * @author liuyazhuang
     *
     */
    private class ViewPageTask implements Runnable{
 
        @Override
        public void run() {
            currentItem = (currentItem + 1) % imageIds.length;
            mHandler.sendEmptyMessage(0);
        }
    }
 
    /**
     * 接收子线程传递过来的数据
     */
    private Handler mHandler = new Handler(){
        public void handleMessage(android.os.Message msg) {
            mViewPaper.setCurrentItem(currentItem);
        };
    };
    @Override
    public void onStop() {
        // TODO Auto-generated method stub
        super.onStop();
        if(scheduledExecutorService != null){
            scheduledExecutorService.shutdown();
            scheduledExecutorService = null;
        }
    }
}