Fragment内Banner輪播圖+News新聞清單

Fragment

Banner依賴

implementation'com.youth.banner:banner:1.4.9'
           

package com.example.pulltorefresh;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.telephony.mbms.MbmsErrors;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.Toast;

import com.example.pulltorefresh.util.NetUtil;
import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshListView;

public class AaFragment extends Fragment {

    private PullToRefreshListView freshList;
    private AaViewAdapter mAdapter;
    private int mPage;
    private int COUNT = 10;
    private String bannerUrl = "http://www.zhaoapi.cn/quarter/getAd";
    private String urlStr = "http://api.expoon.com/AppNews/getNewsList/type/1/p/";

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.afragment, container, false);
    }
    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        freshList = view.findViewById(R.id.freshlist);

        mAdapter = new AaViewAdapter(getActivity());
        freshList.setAdapter(mAdapter);

        mPage = 1;
        //支援加載， 重新整理
        freshList.setMode(PullToRefreshBase.Mode.BOTH);
        freshList.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
            @Override
            public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {
                mPage = 1;
                initData();
            }

            @Override
            public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {
                initData();
            }
        });
          initData();
    }

    private void initData(){
        if (mPage == 1){
            BannerData();
            NewsData();
        }else {
            NewsData();
        }
    }
    //banner圖檔資料
    private void BannerData(){
        NetUtil.getInstance().getRequest(bannerUrl, AaBannerBean.class, new NetUtil.Callback<AaBannerBean>() {
            @Override
            public void OnSuccess(AaBannerBean bannerBean) {
                 mAdapter.setBannerData(bannerBean.getData());
            }
        });

    }
   ///擷取網絡資料
    private void NewsData() {
        NetUtil.getInstance().getRequest(urlStr+mPage, AaNewsBean.class, new NetUtil.Callback<AaNewsBean>() {
            @Override
            public void OnSuccess(AaNewsBean newsBean) {
                if (newsBean == null || !newsBean.isSuccess()){
                    Toast.makeText(getActivity(), "請求錯誤", Toast.LENGTH_SHORT).show();
                    freshList.onRefreshComplete();
                    return;
                }
                //請求成功加載資料
                if (mPage == 1){
                    mAdapter.setDatas(newsBean.getData());
                }else {
                    mAdapter.addDatas(newsBean.getData());
                }
                mPage ++;
                freshList.onRefreshComplete(); //停止重新整理加載

                if (newsBean.getData().size() < COUNT){
                    freshList.setMode(PullToRefreshBase.Mode.PULL_FROM_START);
                }else {
                    freshList.setMode(PullToRefreshBase.Mode.BOTH);
                }


            }
        });
    }

}

           

ViewAdapter擴充卡

package com.example.pulltorefresh;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TabHost;
import android.widget.TextView;

import com.nostra13.universalimageloader.core.ImageLoader;
import com.youth.banner.Banner;
import com.youth.banner.BannerConfig;
import com.youth.banner.loader.ImageLoaderInterface;

import java.util.ArrayList;
import java.util.List;

public class AaViewAdapter extends BaseAdapter {
    private List<AaNewsBean.DataBean> mDatas;
    private List<AaBannerBean.DataBean> mBanner;
    private Context mContext;

    public AaViewAdapter(Context mContext) {
        this.mContext = mContext;
        mDatas = new ArrayList<>();
        mBanner = new ArrayList<>();
    }
    //輪播圖
    public void setBannerData(List<AaBannerBean.DataBean> data) {
        mBanner.clear();
        if (data != null){
            mBanner = data;
        }
        notifyDataSetChanged();
    }

    public void setDatas(List<AaNewsBean.DataBean> data) {
        mDatas.clear();
         if (data != null){
             mDatas = data;
         }
         notifyDataSetChanged();
    }

    public void addDatas(List<AaNewsBean.DataBean> data) {
        if (data != null){
            mDatas = data;
        }
        notifyDataSetChanged();
    }


    private boolean hasBanner(){
        return mBanner.size() > 0;
    }

    @Override
    public int getCount() {
        return hasBanner() ? mDatas.size()+1 : mDatas.size();
    }

    @Override
    public AaNewsBean.DataBean getItem(int position) {
        return mDatas.get(hasBanner() ? position-1 : position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }
    private final int COUNT = 2;
    private final int BANNER = 0;
    private final int NEWS = 1;

    @Override
    public int getViewTypeCount() {
        return COUNT;
    }

    @Override
    public int getItemViewType(int position) {
        return position == 0 && hasBanner() ? BANNER : NEWS;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (getItemViewType(position) == BANNER){
            BannerHolder bHolder;
            if (convertView == null){
                convertView = LayoutInflater.from(mContext).inflate(R.layout.banner_item, parent, false);
                bHolder = new BannerHolder(convertView);
            }else {
                bHolder = (BannerHolder) convertView.getTag();
            }
            bHolder.bindData(mContext, mBanner);
        }else {
            ViewHolder mHolder;
            if (convertView == null){
                convertView = LayoutInflater.from(mContext).inflate(R.layout.a_item, parent, false);
                mHolder = new ViewHolder(convertView);
            }else {
                mHolder = (ViewHolder) convertView.getTag();
            }
            mHolder.bindData(getItem(position));
        }

        return convertView;
    }
    輪播圖banner----------------------==========------------
    class BannerHolder{
        Banner banner;

        public BannerHolder(View itemView){
            banner = itemView.findViewById(R.id.banner);
            itemView.setTag(this);
        }

        public void bindData(Context mContext, List<AaBannerBean.DataBean> mBanner) {
             //設定banner樣式
            banner.setBannerStyle(BannerConfig.CIRCLE_INDICATOR_TITLE_INSIDE);
            //設定圖圖檔的加載器
            banner.setImageLoader(new ImageLoaderInterface<ImageView>() {
                @Override
                public void displayImage(Context context, Object path, ImageView imageView) {
                    AaBannerBean.DataBean mBanner = (AaBannerBean.DataBean) path;
                    ImageLoader.getInstance().displayImage(mBanner.getIconNoHttps(), imageView);
                }

                @Override
                public ImageView createImageView(Context context) {
                    ImageView imageView = new ImageView(context);
                    imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
                    return imageView;
                }
            });
             imitData(mBanner);
        }

        private void imitData(List<AaBannerBean.DataBean> mBanner) {
            banner.setImages(mBanner);
            banner.setBannerTitles(getTitles(mBanner));
            banner.start();
        }

        private List<String> getTitles(List<AaBannerBean.DataBean> mBanner) {
            List<String> result = new ArrayList<>();
            for (AaBannerBean.DataBean banner : mBanner){
                 result.add(banner.getTitle());
            }
            return result;
        }

    }
    //新聞展示的holder-------------==================-------------
    class ViewHolder{
        ImageView imageView;
        TextView textView1, textView2;

        public ViewHolder(View itemView){
            imageView = itemView.findViewById(R.id.image);
            textView1 = itemView.findViewById(R.id.textview1);
            textView2 = itemView.findViewById(R.id.textview2);
            itemView.setTag(this);
        }

        public void bindData(AaNewsBean.DataBean item) {
             textView1.setText(item.getNews_title());
             textView2.setText(item.getNews_summary());
             if (imageView != null){
                 ImageLoader.getInstance().displayImage(item.getPic_url(), imageView);
             }
        }

    }

}

           

fragment布局

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="#ccfc"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.handmark.pulltorefresh.library.PullToRefreshListView
        android:id="@+id/freshlist"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        />

</android.support.constraint.ConstraintLayout>
           

Banner.xml布局

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <com.youth.banner.Banner
        android:id="@+id/banner"
        android:layout_width="0dp"
        android:layout_height="200dp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        />
</android.support.constraint.ConstraintLayout>
           

要添加Banner權限