Fragment+GridView+轮播图

来源：互联网发布：淘淘汽配网上商城源码编辑：程序博客网时间：2024/05/20 18:48
public class Fragment_caijing extends Fragment{    private PullToRefreshScrollView refreshScrollView;    private ViewPager viewPager;    private GridView gridview;    private List<DataDataBean2.ResultBean.ListBean> list = new ArrayList<>();//记录当前展示的所有数据    private int page_num = 1;    private ILoadingLayout startLabels;    private List<String> imageUrlList;    private Handler handler = new Handler(){        @Override        public void handleMessage(Message msg) {            if (msg.what == 0){                //显示下一页....拿到当前页+1                viewPager.setCurrentItem(viewPager.getCurrentItem() +1);                //再次发送消息                handler.sendEmptyMessageDelayed(0,2000);            }        }    };    private MyAdapter adapter;    @Nullable    @Override    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {        View view=inflater.inflate(R.layout.fragment_caijing,container,false);        refreshScrollView = view.findViewById(R.id.refreshscrollview);        viewPager = view.findViewById(R.id.view_pager);        gridview = view.findViewById(R.id.mylistview);        return view;    }    @Override    public void onActivityCreated(@Nullable Bundle savedInstanceState) {        super.onActivityCreated(savedInstanceState);        //失去焦点        gridview.setFocusable(false);        //轮播图        lunBoTu();        //listView展示数据        //1.获取网络数据,,,展示在listView上        getDataFromNet();        //2.设置刷新模式        /*设置pullToRefreshListView的刷新模式，BOTH代表支持上拉和下拉，PULL_FROM_END代表上拉,PULL_FROM_START代表下拉 */        refreshScrollView.setMode(PullToRefreshBase.Mode.BOTH);        //3.通过getLoadingLayoutProxy 方法来指定上拉和下拉时显示的状态的区别(也就是设置向下拉的时候头部里面显示的文字)        //此时这里设置的是下拉刷新的时候显示的文字,所以第一个设置true表示现在是刷新,第二个设置为false        startLabels = refreshScrollView.getLoadingLayoutProxy(true, false);        startLabels.setPullLabel("下拉刷新");        startLabels.setRefreshingLabel("正在刷新...");        startLabels.setReleaseLabel("放开刷新");        ILoadingLayout endLabels = refreshScrollView.getLoadingLayoutProxy(false, true);        endLabels.setPullLabel("上拉刷新");        endLabels.setRefreshingLabel("正在载入...");        endLabels.setReleaseLabel("放开刷新...");        /**         * 监听事件         */        refreshScrollView.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ScrollView>() {            @Override            public void onPullDownToRefresh(PullToRefreshBase<ScrollView> refreshView) {                getRefreshData();            }            @Override            public void onPullUpToRefresh(PullToRefreshBase<ScrollView> refreshView) {                getDataFromNet();            }        });    }    /**     * 轮播图的方法     */    private void lunBoTu() {        NetDataUtil.getData(getActivity(),"http://v.juhe.cn/weixin/query?key=88f7bbc507e3ecacfaeab2b47dd8936f", new JsonCallBack() {            @Override            public void getJson(String json) {                //这个结合记录轮播图的所有地址                imageUrlList = new ArrayList<String>();                //解析数据                Gson gson = new Gson();                DataDataBean2 lunBoBean = gson.fromJson(json, DataDataBean2.class);                List<DataDataBean2.ResultBean.ListBean> essay = lunBoBean.getResult().getList();                for (DataDataBean2.ResultBean.ListBean essayBean : essay) {                    //essayBean.getAuthor().get(0).getWeb_url()                    imageUrlList.add(essayBean.getFirstImg());                }                //此时应该根据图片的路径,加载图片,设置适配器                ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(getActivity(), imageUrlList);                viewPager.setAdapter(viewPagerAdapter);                //1.手动可以无限滑动....maxValue....把当前开始展示的位置放在足够大的某个位置                viewPager.setCurrentItem(imageUrlList.size() * 100000);                //2.自动轮播                handler.sendEmptyMessageDelayed(0, 2000);            }        });    }    /**     * 下拉刷新获取数据     */    private void getRefreshData() {        NetDataUtil.getData(getActivity(),"http://v.juhe.cn/weixin/query?key=88f7bbc507e3ecacfaeab2b47dd8936f",  new JsonCallBack() {            @Override            public void getJson(String json) {                //解析                Gson gson = new Gson();                DataDataBean2 dataDataBean4 = gson.fromJson(json, DataDataBean2.class);                //先清空一下数据                list.clear();                //添加到集合的最前边,,,,(0,,,,)                list.addAll(0, dataDataBean4.getResult().getList());                //设置适配器                setAdapter();                //设置适配器之后停止刷新的操作                refreshScrollView.onRefreshComplete();                //可以设置刷新的时间....                startLabels.setLastUpdatedLabel("上次更新时间:" + new SimpleDateFormat("HH:mm").format(new Date(System.currentTimeMillis())));//last最近的,最后一次update修改/更新            }        });    }    /**     * 刚开始进入页面获取网络数据....还可以作为上拉加载获取数据的操作     *     *     */    private void getDataFromNet() {        //第一个参数是接口,第二个上下文,第三个回调json数据        NetDataUtil.getData(getActivity(),"http://v.juhe.cn/weixin/query?key=88f7bbc507e3ecacfaeab2b47dd8936f", new JsonCallBack() {            @Override            public void getJson(String json) {                //解析                Gson gson = new Gson();                DataDataBean2 dataDataBean = gson.fromJson(json, DataDataBean2.class);                //往后面添加...                list.addAll(dataDataBean.getResult().getList());                //设置适配器                setAdapter();                //停止刷新                refreshScrollView.onRefreshComplete();            }        });    }    private void setAdapter(){        if(adapter==null){            adapter = new MyAdapter(getActivity(),list);            gridview.setAdapter(adapter);        }else{            adapter.notifyDataSetChanged();        }    }}
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