轮播图

public class MainActivity extends AppCompatActivity {

    private ViewPager vp;

    private ArrayList<ImageView> imageViews = new ArrayList<>();
    private int[] imageResIds = {
            R.drawable.a,
            R.drawable.b,
            R.drawable.c,
            R.drawable.d,
            R.drawable.e
    };
    private String[] descs = {
            "巩俐不低俗，我就不能低俗",
            "扑树又回来啦！再唱经典老歌引万人大合唱",
            "揭秘北京电影如何升级",
            "乐视网TV版大派送",
            "热血屌丝的反杀"
    };
    private LinearLayout ll_dot;
    private TextView vp_tv;
    private Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what){
                case 1:
                    int currentItem = vp.getCurrentItem();
                    vp.setCurrentItem(currentItem+1);
                    sendEmptyMessageDelayed(1,3000);
                    break;

            }
        }
    };

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

    private void init() {
        ll_dot = findViewById(R.id.ll_dot);
        vp_tv = findViewById(R.id.vp_tv);
        vp = findViewById(R.id.vp);
        for (int i=0;i<imageResIds.length;i++){
            ImageView imageView = new ImageView(this);
            imageView.setBackgroundResource(imageResIds[i]);
            imageViews.add(imageView);
            createDot(i);
        }
        vp.setAdapter(new MyPagerAdapter());
        vp.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
                int currentItem = vp.getCurrentItem();
                changeTextanddot(currentItem%imageResIds.length);
            }

            @Override
            public void onPageSelected(int position) {

            }

            @Override
            public void onPageScrollStateChanged(int state) {

            }
        });
        vp.setCurrentItem(Integer.MAX_VALUE/2-3);
        handler.sendEmptyMessageDelayed(1,3000);
        ViewPagerTouchEvent();
    }

    public void ViewPagerTouchEvent() {

        vp.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {
                switch (motionEvent.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        //当时MotionEvent.ACTION_DOWN和ACTION_MOVE,就移除handler发送的message.removeMessages.333
                        handler.removeMessages(1);
                        break;
                    case MotionEvent.ACTION_MOVE:
                        handler.removeMessages(1);
                        break;
                    //当用户手松开时ACTION_UP,就继续使用sendEmptyMessageDelayed发送handler的消息.333
                    case MotionEvent.ACTION_UP:
                        handler.sendEmptyMessageDelayed(1, 3000);
                    default:
                        break;
                }
                return false;
            }
        });
    }

    class MyPagerAdapter extends PagerAdapter {
        @Override
        public int getCount() {
            return Integer.MAX_VALUE;
        }

        @Override
        public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
            return view == object;
        }

        @NonNull
        @Override
        public Object instantiateItem(@NonNull ViewGroup container, int position) {
            ImageView imageView = imageViews.get(position % imageResIds.length);
            container.addView(imageView);
            return imageView;
        }

        @Override
        public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {

            container.removeView((View) object);
        }
    }



    public void changeTextanddot(int position) {
        vp_tv.setText(descs[position]);
        for (int i=0;i<imageResIds.length;i++){
            View childAt = ll_dot.getChildAt(i);
            childAt.setBackgroundResource(i==position?R.drawable.dot_focus:R.drawable.dot_normal);
        }
    }
    private void createDot(int i) {
        View view = new View(this);
        view.setBackgroundResource(R.drawable.dot_normal);
        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(8,8);
        layoutParams.leftMargin= 8;
        view.setLayoutParams(layoutParams);
        ll_dot.addView(view);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        handler.removeMessages(1);
    }
}

<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/vp"
        android:layout_width="wrap_content"
        android:layout_height="150dp" />

    <!--    定义lineatLayout时,background="#88000000",gravity="center_horizontal"  padding="8dp"
            android:layout_alignBottom="@+id/viewpager_vp"  小点用一个LinearLayout来包裹.-->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#88000000"
        android:orientation="vertical"
        android:padding="8dp"
        android:gravity="center_horizontal"
        android:layout_alignBottom="@+id/vp">

        <TextView
            android:id="@+id/vp_tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="@android:color/white"
            android:text="我是耿裴宣"/>

        <LinearLayout
            android:id="@+id/ll_dot"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal">


        </LinearLayout>


    </LinearLayout>

</RelativeLayout>

 

public class MainActivity extends AppCompatActivity {
    public static final String IMAGE_URL = "https://www.zhaoapi.cn/quarter/getAd";
    public static final String NEWS_URL = "http://172.17.8.100/movieApi/movie/v1/findHotMovieList?count=10&page=";
    private int page = 1;
    private boolean isLoadMore = false;

    private ViewPager vpImg;
    private XListView xlvNews;
    private VpAdapter adapter;
    private List<Images.DataBean> ilist;
    private Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what){
                case 0:
                    int currentItem = vpImg.getCurrentItem();
                    if (currentItem == ilist.size()-1){
                        currentItem = 0;
                    }else {
                        currentItem ++;
                    }
                    vpImg.setCurrentItem(currentItem);
                    handler.sendEmptyMessageDelayed(0,2000);
                    break;
            }
        }
    };
    private List<News.ResultBean> xlist;
    private NewsAdapter newsadapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //初始化控件
        vpImg = findViewById(R.id.vp_img);
        xlvNews = findViewById(R.id.xlv_news);
        //设置列表第一个条目用banner轮播图
        getVpImg();

        xlist = new ArrayList<>();
        //创建适配器
        newsadapter = new NewsAdapter(xlist,MainActivity.this);
        //设置适配器
        xlvNews.setAdapter(newsadapter);

        getData();

        //设置允许上拉下拉
        xlvNews.setPullLoadEnable(true);
        xlvNews.setPullRefreshEnable(true);

        //xlistView监听
        xlvNews.setXListViewListener(new XListView.IXListViewListener() {
            @Override
            public void onRefresh() {
                if (page >1){
                    page --;
                }else {
                    Toast.makeText(MainActivity.this,"已经是最新的数据了",Toast.LENGTH_SHORT).show();
                }
                isLoadMore = false;
                getData();
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        xlvNews.stopRefresh();
                    }
                },1000);
                long l = System.currentTimeMillis();
                Date date = new Date(l);
                SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm");
                xlvNews.setRefreshTime(format.format(date));
            }

            @Override
            public void onLoadMore() {
                page ++;
                isLoadMore = true;
                getData();
                News news = new News();
                List<News.ResultBean> result = news.getResult();
                if (result == null){
                    Toast.makeText(MainActivity.this,"没有更多的数据了",Toast.LENGTH_SHORT).show();
                }
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        xlvNews.stopLoadMore();
                    }
                },1000);
            }
        });

        xlvNews.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Intent intent = new Intent(MainActivity.this,ShowActivity.class);
                intent.putExtra("name",xlist.get(position-1).getName());
                startActivity(intent);
            }
        });

    }

    private void getData() {
        new AsyncTask<String, Integer, String>() {
            @Override
            protected String doInBackground(String... strings) {
                return HttpUtils.getHttpUrlConnection(strings[0]);
            }

            @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);
                Gson gson = new Gson();
                News news = gson.fromJson(s, News.class);
                if (news != null){
                    List<News.ResultBean> result = news.getResult();
                    if (result != null){
                        if (!isLoadMore){
                            xlist.clear();
                        }
                        xlist.addAll(result);
                        newsadapter.notifyDataSetChanged();
                    }
                }
            }
        }.execute(NEWS_URL + page);
    }

    private void getVpImg() {
        //创建list集合
        ilist = new ArrayList<>();
        //创建适配器
        adapter = new VpAdapter(ilist,MainActivity.this);
        //设置适配器
        vpImg.setAdapter(adapter);
        //延时发送
        handler.sendEmptyMessageDelayed(0,2000);

        new AsyncTask<String, Integer, String>() {
            @Override
            protected String doInBackground(String... strings) {
                return HttpUtils.getHttpUrlConnection(strings[0]);
            }

            @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);
                Gson gson = new Gson();
                Images images = gson.fromJson(s, Images.class);
                if (images != null){
                    List<Images.DataBean> data = images.getData();
                    if (data != null){
                        ilist.clear();
                        ilist.addAll(data);
                        adapter.notifyDataSetChanged();
                    }
                }
            }
        }.execute(IMAGE_URL);
    }
}

public class VpAdapter extends PagerAdapter {
    private List<Images.DataBean> ilist;
    private Context context;

    public VpAdapter(List<Images.DataBean> ilist, Context context) {
        this.ilist = ilist;
        this.context = context;
    }

    @Override
    public int getCount() {
        return ilist.size();
    }

    @Override
    public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
        return view  == object;
    }

    @NonNull
    @Override
    public Object instantiateItem(@NonNull ViewGroup container, int position) {
        ImageView img = new ImageView(context);
        ImageLoader.getInstance().displayImage(ilist.get(position).getIcon(),img);
        img.setScaleType(ImageView.ScaleType.FIT_XY);
        container.addView(img);
        return img;
    }

    @Override
    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
        container.removeView((View) object);
    }
}