无限轮播+商品展示+下拉刷新

本文介绍了一种使用Android实现商品展示和轮播图的方法。通过PullToRefreshScrollView实现下拉刷新,利用ViewPager和自定义适配器完成轮播图效果,并结合ListView展示商品列表。同时,文章还涉及了图片加载、触摸监听等细节。

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//页面布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".GoodsActivity"
    android:orientation="vertical"
    >

<com.handmark.pulltorefresh.library.PullToRefreshScrollView
        android:id="@+id/goods_scrollview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="240dp"
        android:orientation="vertical"
        >

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="240dp">

            <android.support.v4.view.ViewPager
                android:id="@+id/goods_viewpager"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="#0f0"
                >

            </android.support.v4.view.ViewPager>

            <LinearLayout
                android:id="@+id/goods_line"
                android:layout_width="match_parent"
                android:layout_height="40dp"
                android:layout_alignParentBottom="true"
                android:background="#ff5656"
                android:gravity="center"
                android:orientation="horizontal">

            </LinearLayout>

        </RelativeLayout>




    </LinearLayout>


    <bwei.com.day_0524_yuekaol_lianxi.MyListView
        android:id="@+id/goods_listview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></bwei.com.day_0524_yuekaol_lianxi.MyListView>
</LinearLayout>

</com.handmark.pulltorefresh.library.PullToRefreshScrollView>
</LinearLayout>


//java代码



public class GoodsActivity extends AppCompatActivity {


    private static final String TAG = "GoodsActivity---";
    private MyListView listview;
    private PullToRefreshScrollView pull;
    private MyGoodsAdapter adapter;
    private ViewPager viewpager;
    private LinearLayout line;
    private List<ImageView> lunbo = new ArrayList<>();
    private List<ImageView> cir = new ArrayList<>();
    private List<ShopBean.DataBean> list = new ArrayList<>();

    private int page = 1;

    private Handler handler = new Handler() {

        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);

            viewpager.setCurrentItem(viewpager.getCurrentItem() + 1);
            for (int i = 0; i < cir.size(); i++) {

                if (i == viewpager.getCurrentItem() % cir.size()) {

                    cir.get(i).setSelected(true);
                } else {
                    cir.get(i).setSelected(false);
                }
            }

            handler.sendEmptyMessageDelayed(0, 2000);


        }
    };


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

        //初始化页面
        initViews();
        //请求轮播图
        getDataFormNet();

        // getGoods();

    }

    //轮播图
    public void getDataFormNet() {

        HttpUtils httpUtils = HttpUtils.getHttpUtils();
        httpUtils.get(HttpConfig.URL4);

        httpUtils.setHttpListener(new HttpUtils.HttpListener() {

            private MyPageAdapter adapter;

            @Override
            public void getSuccess(String json) {
                Log.d(TAG, "getSuccess: " + json);

                Gson gson = new Gson();
                GoodsBean goods = gson.fromJson(json, GoodsBean.class);
                //将数据添加到集合

                final List<GoodsBean.DataBean> data = goods.getData();

                for (int i = 0; i < data.size(); i++) {

                    String icon = data.get(i).getIcon();
                    ImageView imageView = new ImageView(GoodsActivity.this);
                    //缩放
                    imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
                    ImageLoader.getInstance().displayImage(icon, imageView, MyApp.getOptions());

                    lunbo.add(imageView);

                    //点击标题进行吐司
                    final int j = i;
                    imageView.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            Toast.makeText(GoodsActivity.this, data.get(j).getTitle(), Toast.LENGTH_SHORT).show();
                        }
                    });

                    //添加小圆点
                    ImageView img = new ImageView(GoodsActivity.this);
                    img.setImageResource(R.drawable.select_end);
                    cir.add(img);

                    //img.setPadding(5,0,5,0);
                    LinearLayout.LayoutParams li = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);

                    li.setMargins(10, 0, 10, 0);
                    img.setLayoutParams(li);
                    line.addView(img, i);
                }

                //默认显示第一个
                cir.get(0).setSelected(true);

                //设置适配器
                adapter = new MyPageAdapter(lunbo);
                viewpager.setAdapter(adapter);
                //请求商品
                getGoods();
                //发送hndler请求开始自动轮播
                handler.sendEmptyMessageDelayed(0, 2000);

            }

            @Override
            public void getError(String error) {

            }
        });
    }

    //请求商品数据
    private void getGoods() {

        HttpUtils httpUtils = HttpUtils.getHttpUtils();

        httpUtils.get(HttpConfig.URL5 + page);

        httpUtils.setHttpListener(new HttpUtils.HttpListener() {
            @Override
            public void getSuccess(String json) {
                Log.d(TAG, "商品数据: " + json);
                Gson gson = new Gson();
                ShopBean shop = gson.fromJson(json, ShopBean.class);

                List<ShopBean.DataBean> sh = shop.getData();
                Log.d(TAG, "数--------- " + sh);
                if (page == 1) {

                    list.clear();
                }
                if (sh.size() == 0) {


                    Toast.makeText(GoodsActivity.this, "数据一倒头,没有了", Toast.LENGTH_SHORT).show();
                }
                if (sh != null) {

                    list.addAll(sh);
                }

                //请求商品数据
                adapter = new MyGoodsAdapter(GoodsActivity.this, list);
                listview.setAdapter(adapter);
                //刷新适配器
                adapter.notifyDataSetChanged();
                pull.onRefreshComplete();


            }

            @Override
            public void getError(String error) {

            }
        });
    }


    //初始化页面
    private void initViews() {

        pull = findViewById(R.id.goods_scrollview);
        viewpager = findViewById(R.id.goods_viewpager);
        line = findViewById(R.id.goods_line);
        listview = findViewById(R.id.goods_listview);
//刷新
        pull.setMode(PullToRefreshBase.Mode.BOTH);


        pull.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ScrollView>() {
            @Override
            public void onPullDownToRefresh(PullToRefreshBase<ScrollView> refreshView) {

                page = 1;
                //调用请求数据的方法
                getGoods();
            }

            @Override
            public void onPullUpToRefresh(PullToRefreshBase<ScrollView> refreshView) {

                page++;
                //调用请求数据的方法
                getGoods();
            }
        });

viewpager.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {

        switch (event.getAction()){

            case MotionEvent.ACTION_DOWN:
                handler.removeCallbacksAndMessages(null);
                break;

                case MotionEvent.ACTION_UP:
                    handler.sendEmptyMessageDelayed(0,2000);
                    break;

                    case MotionEvent.ACTION_MOVE:
                        handler.removeCallbacksAndMessages(null);
                        break;
        }
        return false;
    }
});



    }





}


//轮播的适配器






public class MyPageAdapter extends PagerAdapter{

   private List<ImageView> list;

    public MyPageAdapter(List<ImageView> list) {
        this.list = list;
    }

    @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 = list.get(position%list.size());
        container.addView(imageView);
        return imageView;
    }

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

    }
}


//商品展示适配器





public class MyGoodsAdapter extends BaseAdapter {

    private Context context;
    private List<ShopBean.DataBean> list;

    public MyGoodsAdapter(Context context, List<ShopBean.DataBean> list) {
        this.context = context;
        this.list = list;
    }

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

    @Override
    public Object getItem(int position) {
        return list.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        ViewHolder holder;
        if(convertView==null){


       convertView=View.inflate(context,R.layout.item_goods,null);
       holder = new ViewHolder();
       holder.img=convertView.findViewById(R.id.g_img);
       holder.text=convertView.findViewById(R.id.g_text);

       convertView.setTag(holder);

   }else{
            holder=(ViewHolder) convertView.getTag();
        }

        String pic = list.get(position).getImages();
        String s = pic.split("\\|")[0];
        ImageLoader.getInstance().displayImage(s,holder.img, MyApp.getOptions());

        holder.text.setText(list.get(position).getTitle());
        return convertView;
    }


class ViewHolder{
        ImageView img;
        TextView text;
}

}

//商品展示的适配器



public class MyGoodsAdapter extends BaseAdapter {

    private Context context;
    private List<ShopBean.DataBean> list;

    public MyGoodsAdapter(Context context, List<ShopBean.DataBean> list) {
        this.context = context;
        this.list = list;
    }

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

    @Override
    public Object getItem(int position) {
        return list.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        ViewHolder holder;
        if(convertView==null){


       convertView=View.inflate(context,R.layout.item_goods,null);
       holder = new ViewHolder();
       holder.img=convertView.findViewById(R.id.g_img);
       holder.text=convertView.findViewById(R.id.g_text);

       convertView.setTag(holder);

   }else{
            holder=(ViewHolder) convertView.getTag();
        }

        String pic = list.get(position).getImages();
        String s = pic.split("\\|")[0];
        ImageLoader.getInstance().displayImage(s,holder.img, MyApp.getOptions());

        holder.text.setText(list.get(position).getTitle());
        return convertView;
    }


class ViewHolder{
        ImageView img;
        TextView text;
}

}







资源下载链接为: https://pan.quark.cn/s/9e7ef05254f8 在苹果的生态系统中,IAP(应用内购买)是苹果应用商店(App Store)中应用开发者常采用的一种盈利模式,允许用户在应用内直接购买虚拟商品或服务。苹果为开发者提供了一份详细的人民币(CNY)IAP定价表,这份定价表具有以下特点: 价格分级:定价表由多个价格等级组成,开发者可根据虚拟商品的价值选择相应等级,等级越高,价格越高。例如,低等级可能对应基础功能解锁,高等级则对应高级服务或大量虚拟道具。 税收与分成:苹果会从应用内购买金额中抽取30%作为服务费或佣金,这是苹果生态的固定规则。不过,开发者实际到手的收入会因不同国家和地区的税收政策而有所变化,但定价表中的价格等级本身是固定的,便于开发者统一管理。 多级定价策略:通过设置不同价格等级,开发者可以根据商品或服务的类型与价值进行合理定价,以满足不同消费能力的用户需求,从而最大化应用的总收入。例如,一款游戏可以通过设置不同等级的虚拟货币包,吸引不同付费意愿的玩家。 特殊等级:除了标准等级外,定价表还包含备用等级和特殊等级(如备用等级A、备用等级B等),这些等级可能是为应对特殊情况或促销活动而设置的额外价格点,为开发者提供了更灵活的定价选择。 苹果IAP定价表是开发者设计应用内购机制的重要参考。它不仅为开发者提供了标准的收入分成模型,还允许开发者根据产品特性设定价格等级,以适应市场和满足不同用户需求。同时,开发者在使用定价表时,还需严格遵守苹果的《App Store审查指南》,包括30%的分成政策、使用苹果支付接口、提供清晰的产品描述和定价信息等。苹果对应用内交易有严格规定,以确保交易的透明性和安全性。总之,苹果IAP定价表是开发者在应用内购设计中不可或缺的工具,但开发者也需密切关注苹果政策变化,以确保应用的合规运营和收益最大化。
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