一、概述
作为一名三年Android开发经验的程序员,今天和大家一起实战一款APP的首页功能,这个首页在我们平时接触中还是很常见的,虽然页面简单,但是里面涉及的功能点还是挺多的。代码如有不足的还望各路同仁指点一二。
页面中使用的开发库:
整个首页架构使用的是LRecyclerView,包含下拉刷新和自动加载功能
compile 'com.github.jdsjlzx:LRecyclerView:1.3.3'
无限循环轮播图使用的是convenientbanner,效果还是很顺畅的,还可以根据自己的需要修改过渡动画
compile 'com.bigkoo:convenientbanner:2.0.5'
图片加载使用的是glide图片库,里面的方法是自己封装的
网络请求依赖是okhttp,使用的开源库okgo
compile 'com.lzy.net:okgo:2.1.4'
其他的还是九宫格图
compile 'com.lzy.widget:ninegridview:0.2.0'
自动注解butterknife库等等
二、实现效果图
1.首页展示轮播图
2.下拉刷新
3.自动加载
4.cardview水波纹动画
三、核心代码
LRecyclerView作为主框架,轮播图以及分类网格列表作为header放在index_header.xml布局文件下。
IndexFragment.java
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; 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 ListnetworkImages = new ArrayList (); 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 list = new ArrayList (); 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 () { @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) { } }
fragment_index.xml
index_header.xml
CampaignListAdapter.java
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; public class CampaignListAdapter extends ListbaseAdapter{ 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 = new ArrayList<>(); List 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()); } }); } }
campaign_list_item.java
四、源码下载
http://xiazai.jb51.net/201701/yuanma/AndroidAPPDemo(jb51.net).rar
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持考高分网。