Android手把手教大家制作APP首页（下拉刷新、自动加载）

package com.czhappy.commonindexdemo.fragment;import android.os.Bundle;import android.support.v4.app.Fragment;import android.support.v4.view.ViewPager;import android.support.v7.widget.LinearLayoutManager;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.TextView;import com.bigkoo.convenientbanner.ConvenientBanner;import com.bigkoo.convenientbanner.holder.CBViewHolderCreator;import com.czhappy.commonindexdemo.KuaiZhiApplication;import com.czhappy.commonindexdemo.R;import com.czhappy.commonindexdemo.adapter.CampaignListAdapter;import com.czhappy.commonindexdemo.adapter.ClassflyListAdapter;import com.czhappy.commonindexdemo.jsonparse.JSONObject;import com.czhappy.commonindexdemo.jsonparse.ReflectUtil;import com.czhappy.commonindexdemo.model.CampaignList;import com.czhappy.commonindexdemo.model.Classfly;import com.czhappy.commonindexdemo.model.IndexBanner;import com.czhappy.commonindexdemo.model.IndexBannerList;import com.czhappy.commonindexdemo.okhttp.LoadingDialogCallback;import com.czhappy.commonindexdemo.utils.AccordionTransformer;import com.czhappy.commonindexdemo.utils.Api;import com.czhappy.commonindexdemo.utils.NetworkImageHolderView;import com.czhappy.commonindexdemo.utils.ToastUtil;import com.czhappy.commonindexdemo.view.GridViewForScrollView;import com.github.jdsjlzx.interfaces.OnLoadMoreListener;import com.github.jdsjlzx.interfaces.OnRefreshListener;import com.github.jdsjlzx.recyclerview.LRecyclerView;import com.github.jdsjlzx.recyclerview.LRecyclerViewAdapter;import com.github.jdsjlzx.recyclerview.ProgressStyle;import com.lzy.okgo.OkGo;import java.util.ArrayList;import java.util.List;import butterknife.BindView;import butterknife.ButterKnife;import okhttp3.Call;import okhttp3.Response;/** * Description: * User: chenzheng * Date: 2016/9/9 0009 * Time: 17:18 */public class IndexFragment extends Fragment implements ViewPager.OnPageChangeListener{ @BindView(R.id.back_iv) ImageView backIv; @BindView(R.id.layout_back) LinearLayout layoutBack; @BindView(R.id.title_tv) TextView titleTv; @BindView(R.id.right_tv) TextView rightTv; @BindView(R.id.layout_right) LinearLayout layoutRight; @BindView(R.id.campaign_recyclerview) LRecyclerView mRecyclerView; private View mView; private GridViewForScrollView classflyGridview; private LinearLayout pointGroup;; private ConvenientBanner convenientBanner; private TextView bannerTitleTv;; private List<String> networkImages = new ArrayList<String>(); private int lastPosition = 0; private CampaignListAdapter campaignListAdapter; private ClassflyListAdapter classflyListAdapter; private IndexBannerList indexBannerList; private CampaignList campaignList; private LRecyclerViewAdapter mLRecyclerViewAdapter; public int pageNum = 1; public int pageSize = 4; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container,    Bundle savedInstanceState) { mView = inflater.inflate(R.layout.fragment_index, container,  false); ButterKnife.bind(this, mView); initView(); initClassfly(); return mView; } private void initView() { backIv.setVisibility(View.GONE); titleTv.setText("快知网"); layoutRight.setVisibility(View.INVISIBLE); campaignListAdapter = new CampaignListAdapter(getActivity()); mLRecyclerViewAdapter = new LRecyclerViewAdapter(campaignListAdapter); mRecyclerView.setAdapter(mLRecyclerViewAdapter); mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); mRecyclerView.setRefreshProgressStyle(ProgressStyle.LineSpinFadeLoader); mRecyclerView.setArrowImageView(R.drawable.ic_pulltorefresh_arrow); mRecyclerView.setLoadingMoreProgressStyle(ProgressStyle.BallSpinFadeLoader); //add a HeaderView final View header = LayoutInflater.from(getActivity()).inflate(R.layout.index_header,(ViewGroup)mView.findViewById(android.R.id.content), false); classflyGridview = (GridViewForScrollView) header.findViewById(R.id.classfly_gridview); classflyGridview.setFocusable(false); pointGroup = (LinearLayout) header.findViewById(R.id.point_group); convenientBanner = (ConvenientBanner) header.findViewById(R.id.convenientBanner); bannerTitleTv = (TextView) header.findViewById(R.id.banner_title_tv); mLRecyclerViewAdapter.addHeaderView(header); mRecyclerView.setOnRefreshListener(new OnRefreshListener() {  @Override  public void onRefresh() {  pageNum = 1;  doRequest(pageNum, true);  requestBannerList();  } }); mRecyclerView.setOnLoadMoreListener(new OnLoadMoreListener() {  @Override  public void onLoadMore() {  pageNum++;  doRequest(pageNum, false);  } }); //设置头部加载颜色 mRecyclerView.setHeaderViewColor(R.color.colorAccent, R.color.dark ,android.R.color.white); //设置底部加载颜色 mRecyclerView.setFooterViewColor(R.color.colorAccent, R.color.dark ,android.R.color.white); //设置底部加载文字提示 mRecyclerView.setFooterViewHint("拼命加载中","已经全部为你呈现了","网络不给力啊，点击再试一次吧"); mRecyclerView.setRefreshing(true);// mLRecyclerViewAdapter.setOnItemClickListener(new OnItemClickListener() {//  @Override//  public void onItemClick(View view, int position) {////  }//// });//// mLRecyclerViewAdapter.setOnItemLongClickListener(new OnItemLongClickListener() {//  @Override//  public void onItemLongClick(View view, int position) {////  }// }); } private void initClassfly() { List<Classfly> list = new ArrayList<Classfly>(); Classfly c1 = new Classfly("3", "通知公告", R.mipmap.classfly_bg1); Classfly c2 = new Classfly("4", "教育学习", R.mipmap.classfly_bg2); Classfly c3 = new Classfly("5", "偶像明星", R.mipmap.classfly_bg3); Classfly c4 = new Classfly("6", "特价优惠", R.mipmap.classfly_bg4); Classfly c5 = new Classfly("7", "线下活动", R.mipmap.classfly_bg5); Classfly c6 = new Classfly("8", "其它", R.mipmap.classfly_bg6); list.add(c1); list.add(c2); list.add(c3); list.add(c4); list.add(c5); list.add(c6); classflyListAdapter = new ClassflyListAdapter(getActivity()); classflyGridview.setAdapter(classflyListAdapter); classflyListAdapter.setItems(list); classflyGridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {  @Override  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {  } }); } private void doRequest(int page, final boolean isRefresh) { OkGo.post(Api.GET_CAMPAIGN_LIST)  .tag(this)  .params("currentPage", String.valueOf(page))  .params("pageSize", String.valueOf(pageSize))  .execute(new LoadingDialogCallback(getActivity()) {   @Override   public void onSuccess(String s, Call call, Response response) {   if(isRefresh){    mRecyclerView.refreshComplete();   }else {    mRecyclerView.loadMoreComplete();   }   try {    campaignList = (CampaignList) ReflectUtil     .copy(CampaignList.class,      new JSONObject(s));   } catch (Exception e) {    e.printStackTrace();   }   if (campaignList != null) {    String result = campaignList.getResult();    if (Api.SUCCESS.equals(result)) {    int j = campaignList.getData().size();    if (isRefresh) {     campaignListAdapter.clear();    }    if (j != pageSize) {     mRecyclerView.setNoMore(true);    }    campaignListAdapter.addAll(campaignList.getData());    }else{    ToastUtil.show(getActivity(), campaignList.getMsg());    }   }   }   @Override   public void onError(Call call, Response response, Exception e) {   super.onError(call, response, e);   if(isRefresh){    mRecyclerView.refreshComplete();   }else {    mRecyclerView.loadMoreComplete();   }   KuaiZhiApplication.showResultToast(getActivity(), call, e);   }  }); } private void requestBannerList() { OkGo.post(Api.GET_INDEX_BANNER_LIST)  .tag(this)  .cacheKey("cache_index_banner_list")  .execute(new LoadingDialogCallback(getActivity()) {   @Override   public void onCacheSuccess(String s, Call call) {   super.onCacheSuccess(s, call);   analysisIndexBannerRequest(s);   }   @Override   public void onSuccess(String s, Call call, Response response) {   analysisIndexBannerRequest(s);   }   @Override   public void onError(Call call, Response response, Exception e) {   super.onError(call, response, e);   KuaiZhiApplication.showResultToast(getActivity(), call, e);   }  }); } private void analysisIndexBannerRequest(String s){ try {  indexBannerList = (IndexBannerList) ReflectUtil   .copy(IndexBannerList.class,    new JSONObject(s)); } catch (Exception e) {  e.printStackTrace(); } if (indexBannerList != null) {  String result = indexBannerList.getResult();  if (Api.SUCCESS.equals(result)) {  networkImages.clear();  for (IndexBanner ib : indexBannerList.getData()) {   networkImages.add(ib.getBanner_url());  }  setRecommendInfo();  initBanner();  }else{  ToastUtil.show(getActivity(), indexBannerList.getMsg());  } } } private void initBanner() { convenientBanner.setPages(new CBViewHolderCreator<NetworkImageHolderView>() {  @Override  public NetworkImageHolderView createHolder() {  return new NetworkImageHolderView();  } }, networkImages)  .setOnPageChangeListener(this);//监听翻页事件 convenientBanner.setPageTransformer(new AccordionTransformer()); convenientBanner.startTurning(3000); convenientBanner.setOnItemClickListener(new com.bigkoo.convenientbanner.listener.OnItemClickListener() {  @Override  public void onItemClick(int position) {  } }); } private void setRecommendInfo() { pointGroup.removeAllViews(); for (int i = 0; i < indexBannerList.getData().size(); i++) {  // 添加指示点  ImageView point = new ImageView(getActivity());  LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(   LinearLayout.LayoutParams.WRAP_CONTENT,   LinearLayout.LayoutParams.WRAP_CONTENT);  if (i != indexBannerList.getData().size() - 1) {  params.rightMargin = 10;  }  point.setLayoutParams(params);  point.setBackgroundResource(R.drawable.point_bg);  if (i == 0) {  point.setEnabled(true);  } else {  point.setEnabled(false);  }  pointGroup.addView(point); } } @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } @Override public void onPageSelected(int position) { // 改变指示点的状态 // 把当前点enbale 为true if (indexBannerList != null && indexBannerList.getData() != null && indexBannerList.getData().size() > 0) {  bannerTitleTv.setText(indexBannerList.getData().get(position).getBanner_title()); } pointGroup.getChildAt(position).setEnabled(true); // 把上一个点设为false pointGroup.getChildAt(lastPosition).setEnabled(false); lastPosition = position; } @Override public void onPageScrollStateChanged(int state) { }}

<?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" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/bg_color" android:orientation="vertical"> <include android:id="@+id/include_id" layout="@layout/titlelayout_theme" android:layout_width="match_parent" android:layout_height="wrap_content" /> <com.github.jdsjlzx.recyclerview.LRecyclerView android:id="@+id/campaign_recyclerview" android:layout_width="match_parent" android:layout_height="match_parent" app:layout_behavior="@string/appbar_scrolling_view_behavior"/></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <FrameLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <com.bigkoo.convenientbanner.ConvenientBanner xmlns:app="http://schemas.android.com/apk/res-auto"  android:id="@+id/convenientBanner"  android:layout_width="match_parent"  android:layout_height="@dimen/index_banner_height"  app:canLoop="true" /> <LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:layout_gravity="bottom"  android:background="@drawable/gradient_bg"  android:gravity="center_vertical"  android:orientation="horizontal"  android:padding="10dp">  <TextView  android:id="@+id/banner_title_tv"  android:layout_width="0dp"  android:layout_height="wrap_content"  android:layout_weight="1"  android:ellipsize="end"  android:singleLine="true"  android:textColor="@color/white"  android:textSize="@dimen/s_size" />  <LinearLayout  android:id="@+id/point_group"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:gravity="center"  android:orientation="horizontal"></LinearLayout> </LinearLayout> </FrameLayout> <com.czhappy.commonindexdemo.view.GridViewForScrollView android:id="@+id/classfly_gridview" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@color/white" android:numColumns="3" /> <View android:layout_width="match_parent" android:layout_height="0.5dp" android:background="#dddddd" /></LinearLayout>

package com.czhappy.commonindexdemo.adapter;import android.content.Context;import android.support.v7.widget.CardView;import android.view.View;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.TextView;import com.czhappy.commonindexdemo.R;import com.czhappy.commonindexdemo.glide.GlideImgManager;import com.czhappy.commonindexdemo.model.Campaign;import com.czhappy.commonindexdemo.model.CampaignImage;import com.czhappy.commonindexdemo.utils.ToastUtil;import com.czhappy.commonindexdemo.utils.Utils;import com.lzy.ninegrid.ImageInfo;import com.lzy.ninegrid.NineGridView;import com.lzy.ninegrid.preview.NineGridViewClickAdapter;import java.util.ArrayList;import java.util.List;import butterknife.BindView;import butterknife.ButterKnife;/** * Description: * User: chenzheng * Date: 2016/9/14 0014 * Time: 17:45 */public class CampaignListAdapter extends ListBaseAdapter<Campaign> { private Context mContext; @BindView(R.id.user_head_iv) ImageView userHeadIv; @BindView(R.id.username_tv) TextView usernameTv; @BindView(R.id.createtime_tv) TextView createtimeTv; @BindView(R.id.status_tv) TextView statusTv; @BindView(R.id.title_tv) TextView titleTv; @BindView(R.id.desc_tv) TextView descTv; @BindView(R.id.campaign_time_tv) TextView campaignTimeTv; @BindView(R.id.prise_iv) ImageView priseIv; @BindView(R.id.prise_count_tv) TextView priseCountTv; @BindView(R.id.comment_count_tv) TextView commentCountTv; @BindView(R.id.nineGrid) NineGridView nineGrid; @BindView(R.id.address_tv) TextView addressTv; @BindView(R.id.cardView) CardView cardView; @BindView(R.id.layout_address) LinearLayout layoutAddress; public CampaignListAdapter(Context context) { super(context); this.mContext = context; } @Override public int getLayoutId() { return R.layout.campaign_list_item; } @Override public void onBindItemHolder(SuperViewHolder holder, int position) { ButterKnife.bind(this, holder.itemView); final Campaign campaign = mDataList.get(position); if(!Utils.isEmpty(campaign.getStart_time()) && Utils.isEmpty(campaign.getEnd_time())){  campaignTimeTv.setText("自"+Utils.StringDateFormat(campaign.getStart_time(), "yyyy-MM-dd HH:mm") + "起"); }else{  campaignTimeTv.setText(Utils.StringDateFormat(campaign.getStart_time(), "yyyy-MM-dd HH:mm") + "至" + Utils.StringDateFormat(campaign.getEnd_time(), "yyyy-MM-dd HH:mm")); } commentCountTv.setText(campaign.getComment_count()); createtimeTv.setText(campaign.getCreate_time()); descTv.setText(campaign.getCampaign_desc()); priseCountTv.setText(campaign.getPraise_count()); usernameTv.setText(campaign.getNickname()); if(!Utils.isEmpty(campaign.getCampaign_address())){  layoutAddress.setVisibility(View.VISIBLE);  addressTv.setText(campaign.getCampaign_address()); }else{  layoutAddress.setVisibility(View.GONE); } if ("1".equals(campaign.getIs_praise())) {  priseIv.setImageResource(R.mipmap.ding_checked_icon); } else {  priseIv.setImageResource(R.mipmap.ding_uncheck_icon); } String statusStr = Utils.checkTimeStatus(campaign.getStart_time(), campaign.getEnd_time()); statusTv.setText(statusStr); if ("未开始".equals(statusStr)) {  statusTv.setTextColor(mContext.getResources().getColor(R.color.blue)); } else if ("进行中".equals(statusStr)) {  statusTv.setTextColor(mContext.getResources().getColor(R.color.red)); } else if ("已结束".equals(statusStr)) {  statusTv.setTextColor(mContext.getResources().getColor(R.color.common_gray9)); } titleTv.setText(campaign.getCampaign_name()); GlideImgManager.loadCircleImage(mContext, campaign.getHead_img(), userHeadIv); ArrayList<ImageInfo> imageInfo = new ArrayList<>(); List<CampaignImage> images = campaign.getImg_list(); if (images != null) {  for (CampaignImage image : images) {  ImageInfo info = new ImageInfo();  info.setThumbnailUrl(image.getImage_url());  info.setBigImageUrl(image.getImage_url());  imageInfo.add(info);  } } nineGrid.setAdapter(new NineGridViewClickAdapter(mContext, imageInfo)); if (images != null && images.size() == 1) {  //nineGrid.setSingleImageRatio(images.get(0).getWidth() * 1.0f / images.get(0).getHeight()); } cardView.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View v) {  ToastUtil.show(mContext, campaign.getCampaign_name());  } }); }}

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="5dp"> <android.support.v7.widget.CardView android:id="@+id/cardView" android:layout_width="match_parent" android:layout_height="wrap_content" android:focusable="true" android:clickable="true" android:foreground="@drawable/card_foreground" app:cardCornerRadius="@dimen/card_radius" app:cardPreventCornerOverlap="false" app:elevation="3dp"> <LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:orientation="vertical"  android:padding="8dp">  <LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:gravity="center_vertical"  android:orientation="horizontal">  <ImageView   android:id="@+id/user_head_iv"   android:layout_width="40dp"   android:layout_height="40dp"   android:src="@mipmap/ic_img_user_default" />  <LinearLayout   android:layout_width="0dp"   android:layout_height="wrap_content"   android:layout_marginLeft="8dp"   android:layout_weight="1"   android:orientation="vertical">   <TextView   android:id="@+id/username_tv"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:text="zhangsan"   android:textColor="@color/black"   android:textSize="@dimen/m_size" />   <TextView   android:id="@+id/createtime_tv"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:text="2016-06-21 12:56:21"   android:textColor="@color/common_gray9"   android:textSize="@dimen/ss_size" />  </LinearLayout>  <TextView   android:id="@+id/status_tv"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:text="未开始"   android:textColor="@color/common_gray9"   android:textSize="@dimen/s_size" />  </LinearLayout>  <TextView  android:id="@+id/title_tv"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_marginTop="10dp"  android:text="活动标题活动标题活动标题活动标"  android:textColor="@color/common_gray3"  android:textSize="@dimen/s_size" />  <LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:gravity="center_vertical"  android:layout_marginTop="3dp"  android:orientation="horizontal">  <ImageView   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:src="@mipmap/attend_time_icon_bg" />  <TextView   android:id="@+id/campaign_time_tv"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:ellipsize="end"   android:maxLines="2"   android:layout_marginLeft="5dp"   android:text="2016-06-21 12:56 - 2016-06-21 12:56"   android:textColor="@color/common_gray9"   android:textSize="@dimen/s_size" />  </LinearLayout>  <LinearLayout  android:id="@+id/layout_address"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:gravity="center_vertical"  android:layout_marginTop="3dp"  android:orientation="horizontal">  <ImageView   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:src="@mipmap/address_icon_bg" />  <TextView   android:id="@+id/address_tv"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:ellipsize="end"   android:maxLines="2"   android:layout_marginLeft="5dp"   android:textColor="@color/common_gray9"   android:textSize="@dimen/s_size" />  </LinearLayout>  <TextView  android:id="@+id/desc_tv"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_marginTop="5dp"  android:ellipsize="end"  android:maxLines="2"  android:text="活动标题活动标题活动标题活动标题活动标题活动标题"  android:textColor="@color/common_gray9"  android:textSize="@dimen/s_size" />  <com.lzy.ninegrid.NineGridView  android:id="@+id/nineGrid"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:layout_marginTop="5dp"  app:ngv_gridSpacing="3dp"  app:ngv_maxSize="9"  app:ngv_mode="grid"  app:ngv_singleImageRatio="1"  app:ngv_singleImageSize="250dp"/>  <LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:layout_marginTop="15dp"  android:gravity="center_vertical"  android:orientation="horizontal">  <View   android:layout_width="0dp"   android:layout_height="1dp"   android:layout_weight="1" />  <ImageView   android:id="@+id/prise_iv"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:src="@mipmap/ding_uncheck_icon" />  <TextView   android:id="@+id/prise_count_tv"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:layout_marginLeft="5dp"   android:text="26"   android:textColor="@color/common_gray6"   android:textSize="@dimen/s_size" />  <ImageView   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:layout_marginLeft="25dp"   android:src="@mipmap/comment_icon" />  <TextView   android:id="@+id/comment_count_tv"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:layout_marginLeft="5dp"   android:text="26"   android:textColor="@color/common_gray6"   android:textSize="@dimen/s_size" />  </LinearLayout> </LinearLayout> </android.support.v7.widget.CardView></RelativeLayout>