项目地址https://github.com/helloworld107/ZhNews
public classDailyListAdapterextendsRecyclerView.Adapter {
privateContextmContext;
privateResponsemResponse;
public intload_state=LOAD_PULL_TO;
//专门用来处理尾部刷新状态的标识，跟适配器类型无关
public static final int LOAD_MORE=0;
public static final intLOAD_PULL_TO=1;
public static final intLOAD_NONE=2;
public static final intLOAD_END=3;
//轮播图和请求尾部算一个吧
private static final int TYPE_TOP= -1;
private static final intTYPE_FOOTER= -2;
//列表中间的四种类型，其实只有三种类型，空类星可以不写，切记类似数字最好想回递增不要乱写
private static final intTYPE_HEADLINE= -3;
private static final intTYPE_NORMAL_PICTURE= -4;
private static final intTYPE_NORMAL_TEXT= -5;
private static final intTYPE_EMPTY= -6;
publicDailyListAdapter(Context context, Response response) {
mContext= context;
this.mResponse= response;
}
@Override
public intgetItemViewType(intposition) {
//弄了半天只判断头和尾啊
if(position == 0) {
returnTYPE_TOP;
}else if(position == 1) {
returnTYPE_HEADLINE;
}else if(position + 1== getItemCount()) {
returnTYPE_FOOTER;
}else{
//普通类型又分三种情况
Daily daily =mResponse.getFeeds().get(position -2);
inttype = daily.getType();
if(type == 0|| type ==2) {
returnTYPE_NORMAL_PICTURE;
}else if(type == 1) {
returnTYPE_NORMAL_TEXT;
}else{
returnTYPE_EMPTY;
}
}
}
@Override
publicRecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent,intviewType) {
// Logger.e("viewType " + viewType);
// Logger.e("count " + getItemCount());
switch(viewType) {
caseTYPE_TOP:
View inflate1 = View.inflate(mContext, R.layout.item_zhihu_top_stories,null);
TopStoriesViewHolder topStoriesViewHolder =newTopStoriesViewHolder(inflate1);
returntopStoriesViewHolder;
caseTYPE_FOOTER:
View inflate2 = View.inflate(mContext, R.layout.activity_view_footer,null);
FooterViewHolder footerViewHolder =newFooterViewHolder(inflate2);
returnfooterViewHolder;
caseTYPE_HEADLINE:
View rootView = View.inflate(parent.getContext(), R.layout.item_daily_headline,null);
return newHeadlineViewHolder(rootView);
caseTYPE_NORMAL_PICTURE:
View rootView1 = View.inflate(parent.getContext(), R.layout.item_daily_feed_0,null);
return newFeed_0_ViewHolder(rootView1);
caseTYPE_NORMAL_TEXT:
View rootView2 = View.inflate(parent.getContext(), R.layout.item_daily_feed_1,null);
return newFeed_1_ViewHolder(rootView2);
caseTYPE_EMPTY://不实现
View rootView3 = View.inflate(parent.getContext(), R.layout.item_empty,null);
return newEmptyViewHolder(rootView3);
}
View rootView3 = View.inflate(parent.getContext(), R.layout.item_empty,null);
return newEmptyViewHolder(rootView3);
}
@Override
public voidonBindViewHolder(RecyclerView.ViewHolder holder,intposition) {
// getItemViewType(position) //可以通过这种方法判断类型，不过还有中更加简单的方式
if(holderinstanceofDailyListAdapter.FooterViewHolder) {
DailyListAdapter.FooterViewHolder footerViewHolder = (DailyListAdapter.FooterViewHolder) holder;
//封装方法写在了holder里，6666
footerViewHolder.bindItem();
}else if(holderinstanceofDailyListAdapter.TopStoriesViewHolder) {
DailyListAdapter.TopStoriesViewHolder topStoriesViewHolder = (DailyListAdapter.TopStoriesViewHolder) holder;
topStoriesViewHolder.bindItem(mResponse.getBanners());
}else if(holderinstanceofFeed_1_ViewHolder) {
Daily daily =mResponse.getFeeds().get(position -2);
//由于数据的原因，必须判断类型，如果没有类型就不设数据，好坑爹啊，服务器又干什么坏事了
Feed_1_ViewHolder feed1viewholder = (Feed_1_ViewHolder) holder;
feed1viewholder.bindItem(daily);
}else if(holderinstanceofFeed_0_ViewHolder) {
Daily daily =mResponse.getFeeds().get(position -2);
Feed_0_ViewHolder feed0viewholder = (Feed_0_ViewHolder) holder;
feed0viewholder.bindItem(daily);
}else if(holderinstanceofHeadlineViewHolder) {
HeadlineViewHolder headlineViewHolder = (HeadlineViewHolder) holder;
headlineViewHolder.bindItem(mResponse.getHeadline());
}else{
}
}
@Override
public intgetItemCount() {
returnmResponse.getListSize() +1;//请求头和headline已经帮你加好了，所以再一个请求尾部就可以了，这个比较灵活，要根据实际情况考虑
}
//写这两个方法就是为了开启轮播图功能而已，轮不图是个自定义控件，用起来还不错
@Override
public voidonView AttachedToWindow(RecyclerView.ViewHolder holder) {
if(holderinstanceofZhihuListAdapter.TopStoriesViewHolder) {
ZhihuListAdapter.TopStoriesViewHolder topStoriesViewHolder = (ZhihuListAdapter.TopStoriesViewHolder) holder;
topStoriesViewHolder.mVpTopStories.startAutoRun();
}
}
@Override
public voidonViewDetachedFromWindow(RecyclerView.ViewHolder holder) {
if(holderinstanceofZhihuListAdapter.TopStoriesViewHolder) {
ZhihuListAdapter.TopStoriesViewHolder topStoriesViewHolder = (ZhihuListAdapter.TopStoriesViewHolder) holder;
topStoriesViewHolder.mVpTopStories.stopAutoRun();
}
}
classTopStoriesViewHolderextendsRecyclerView.ViewHolder {
@Bind(R.id.vp_top_stories)
TopStoriesViewPagermVpTopStories;
@Bind(R.id.tv_top_title)
TextViewmTvTopTitle;
TopStoriesViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
}
public voidbindItem(List<Daily> banners) {
//因为轮播图的类型写死了，所以需要转换一下，好坑爹，应该定义成泛型
List<TopStories> topList =newArrayList<>();
for(Daily d : banners) {
TopStories t =newTopStories();
t.setImage(d.getImage());
t.setTitle(d.getPost().getTitle());
t.setUrl(d.getPost().getAppview());
topList.add(t);
}
mVpTopStories.init(topList,mTvTopTitle,newTopStoriesViewPager.ViewPagerClickListenner() {
@Override
public voidonClick(TopStories item) {
mContext.startActivity(GankWebActivity.newIntent(mContext,item.getUrl()));
}
});
}
}
classFooterViewHolderextendsRecyclerView.ViewHolder {
@Bind(R.id.progress)
ProgressBarmProgress;
@Bind(R.id.tv_load_prompt)
TextViewmTvLoadPrompt;
FooterViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
//宽度好定，高度麻烦，根据屏幕适配方法用代码写一下，这个方法值得赞一下
ScreenUtil instance = ScreenUtil.instance(mContext);
intheight = instance.dip2px(40);
LinearLayout.LayoutParams layoutParams =newLinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, height);
view.setLayoutParams(layoutParams);
}
public voidbindItem() {
//请求尾部都在这里处理了，其实也不难
switch(load_state) {
caseLOAD_MORE:
mTvLoadPrompt.setText("正在加载中。。。");
mProgress.setVisibility(View.VISIBLE);
break;
caseLOAD_PULL_TO:
mTvLoadPrompt.setText("上拉加载更多");
mProgress.setVisibility(View.VISIBLE);
break;
caseLOAD_NONE:
mTvLoadPrompt.setText("已无更多数据");
mProgress.setVisibility(View.GONE);
break;
caseLOAD_END:
mProgress.setVisibility(View.GONE);
break;
}
}
}
// 提供给外部更新下拉进度条的装
public voidupdateLoadStatus(intstatus) {
this.load_state= status;
notifyDataSetChanged();
}
classFeed_1_ViewHolderextendsRecyclerView.ViewHolder {
@Bind(R.id.tv_feed_1_title)
TextViewtv_feed_1_title;
@Bind(R.id.tv_feed_1_type)
TextViewtv_feed_1_type;
@Bind(R.id.iv_feed_1_type_icon)
ImageViewiv_feed_1_type_icon;
@Bind(R.id.iv_feed_1_icon)
ImageViewiv_feed_1_icon;
@Bind(R.id.card_feed_1)
CardViewcard_feed_1;
publicFeed_1_ViewHolder(View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
ScreenUtil screenUtil = ScreenUtil.instance(mContext);
//这种适配方法值得学习
card_feed_1.setLayoutParams(newLinearLayout.LayoutParams(screenUtil.getScreenWidth(), ViewGroup.LayoutParams.WRAP_CONTENT));
}
public voidbindItem(Daily daily) {
tv_feed_1_title.setText(daily.getPost().getTitle());
tv_feed_1_type.setText(daily.getPost().getCategory().getTitle());
Glide.with(mContext).load(daily.getPost().getCategory().getImage_lab()).centerCrop().into(iv_feed_1_type_icon);
Glide.with(mContext).load(daily.getImage()).centerCrop().into(iv_feed_1_icon);
card_feed_1.setOnClickListener(v -> {
mContext.startActivity(GankWebActivity.newIntent(mContext, daily.getPost().getAppview()));
});
}
}
classEmptyViewHolderextendsRecyclerView.ViewHolder {
publicEmptyViewHolder(View rootView) {
super(rootView);
}
}
classFeed_0_ViewHolderextendsRecyclerView.ViewHolder {
@Bind(R.id.iv_feed_0_icon)
ImageViewiv_feed_0_icon;
@Bind(R.id.tv_feed_0_title)
TextViewtv_feed_0_title;
@Bind(R.id.tv_feed_0_desc)
TextViewtv_feed_0_desc;
@Bind(R.id.iv_feed_0_type)
ImageViewiv_feed_0_type;
@Bind(R.id.tv_Feed_0_type)
TextViewtv_Feed_0_type;
@Bind(R.id.card_layout)
CardViewcard_layout;
publicFeed_0_ViewHolder(View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
ScreenUtil screenUtil = ScreenUtil.instance(mContext);
card_layout.setLayoutParams(newLinearLayout.LayoutParams(screenUtil.getScreenWidth(), ViewGroup.LayoutParams.WRAP_CONTENT));
}
public voidbindItem(Daily daily) {
tv_feed_0_title.setText(daily.getPost().getTitle());
tv_feed_0_desc.setText(daily.getPost().getDescription());
tv_Feed_0_type.setText(daily.getPost().getCategory().getTitle());
Glide.with(mContext).load(daily.getImage()).centerCrop().into(iv_feed_0_icon);
if(daily.getType() ==0) {
Glide.with(mContext).load(R.drawable.feed_0_icon).centerCrop().into(iv_feed_0_type);
card_layout.setOnClickListener(v -> {
Intent intent = DailyFeedActivity.newIntent(mContext, daily.getPost().getId(), daily.getPost().getDescription(), daily.getPost().getTitle(), daily.getImage());
mContext.startActivity(intent);
});
}else if(daily.getType() ==2) {
Glide.with(mContext).load(R.drawable.feed_1_icon).centerCrop().into(iv_feed_0_type);
card_layout.setOnClickListener(v -> {
Intent intent = GankWebActivity.newIntent(mContext, daily.getPost().getAppview());
mContext.startActivity(intent);
});
}
}
}
classHeadlineViewHolderextendsRecyclerView.ViewHolder {
@Bind(R.id.tv_headline_1)
TextViewtv_headline_1;
@Bind(R.id.tv_headline_2)
TextViewtv_headline_2;
@Bind(R.id.tv_headline_3)
TextViewtv_headline_3;
@Bind(R.id.card_headline)
CardViewcard_headline;
publicHeadlineViewHolder(View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
}
public voidbindItem(Daily daily) {
List<HeadLine> headLines = daily.getList();
tv_headline_1.setText(headLines.get(0).getDescription());
tv_headline_2.setText(headLines.get(1).getDescription());
tv_headline_3.setText(headLines.get(2).getDescription());
card_headline.setOnClickListener(v -> {
mContext.startActivity(GankWebActivity.newIntent(mContext, daily.getPost().getAppview()));
});
}
}
}
总而言之写法中规中矩吧，其实更好的写法应该把轮播图和请求尾部改成listview那样的可以动态添加头和尾这样就更好的实现了分类，开源控件很多，这里就不多说了，下拉刷新交给了布局swiperefresh的去完成了