package com.example.jingbin.cloudreader.adapter;
import android.content.Context;
import android.databinding.DataBindingUtil;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.example.jingbin.cloudreader.MainActivity;
import com.example.jingbin.cloudreader.R;
import com.example.jingbin.cloudreader.bean.book.BooksBean;
import com.example.jingbin.cloudreader.databinding.FooterItemBookBinding;
import com.example.jingbin.cloudreader.databinding.HeaderItemBookBinding;
import com.example.jingbin.cloudreader.databinding.ItemBookBinding;
import com.example.jingbin.cloudreader.ui.book.child.BookDetailActivity;
import com.example.jingbin.cloudreader.utils.PerfectClickListener;
import java.util.ArrayList;
import java.util.List;
/**
* Created by jingbin on 2016/12/15.
*/
public class BookAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private MainActivity context;
private int status = 1;
public static final int LOAD_MORE = 0;
public static final int LOAD_PULL_TO = 1;
public static final int LOAD_NONE = 2;
private static final int LOAD_END = 3;
private static final int TYPE_TOP = -1;
private static final int TYPE_FOOTER_BOOK = -2;
private static final int TYPE_HEADER_BOOK = -3;
private static final int TYPE_CONTENT_BOOK = -4;
private List<BooksBean> list;
public BookAdapter(Context context) {
this.context = (MainActivity) context;
list = new ArrayList<>();
}
@Override
public int getItemViewType(int position) {
if (position == 0) {
return TYPE_HEADER_BOOK;
} else if (position + 1 == getItemCount()) {
return TYPE_FOOTER_BOOK;
} else {
return TYPE_CONTENT_BOOK ;
}
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
switch (viewType) {
case TYPE_HEADER_BOOK:
HeaderItemBookBinding mBindHeader = DataBindingUtil.inflate(LayoutInflater.from(parent.getContext()), R.layout.header_item_book, parent, false);
return new HeaderViewHolder(mBindHeader.getRoot());
case TYPE_FOOTER_BOOK:
FooterItemBookBinding mBindFooter = DataBindingUtil.inflate(LayoutInflater.from(parent.getContext()), R.layout.footer_item_book, parent, false);
return new FooterViewHolder(mBindFooter.getRoot());
default:
ItemBookBinding mBindBook = DataBindingUtil.inflate(LayoutInflater.from(parent.getContext()), R.layout.item_book, parent, false);
return new BookViewHolder(mBindBook.getRoot());
}
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
if (holder instanceof HeaderViewHolder) {
HeaderViewHolder headerViewHolder = (HeaderViewHolder) holder;
headerViewHolder.bindItem();
} else if (holder instanceof FooterViewHolder) {
FooterViewHolder footerViewHolder = (FooterViewHolder) holder;
footerViewHolder.bindItem();
} else if (holder instanceof BookViewHolder) {
BookViewHolder bookViewHolder = (BookViewHolder) holder;
if (list != null && list.size() > 0) {
// 内容从"1"开始
// DebugUtil.error("------position: "+position);
bookViewHolder.bindItem(list.get(position - 1), position-1);
}
}
}
@Override
public int getItemCount() {
return list.size() + 2;
}
/**
* 处理 GridLayoutManager 添加头尾布局占满屏幕宽的情况
*/
@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
RecyclerView.LayoutManager manager = recyclerView.getLayoutManager();
if (manager instanceof GridLayoutManager) {
final GridLayoutManager gridManager = ((GridLayoutManager) manager);
gridManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
@Override
public int getSpanSize(int position) {
return (isHeader(position) || isFooter(position)) ? gridManager.getSpanCount() : 1;
}
});
}
}
/**
* 处理 StaggeredGridLayoutManager 添加头尾布局占满屏幕宽的情况
*/
@Override
public void onViewAttachedToWindow(RecyclerView.ViewHolder holder) {
super.onViewAttachedToWindow(holder);
ViewGroup.LayoutParams lp = holder.itemView.getLayoutParams();
if (lp != null
&& lp instanceof StaggeredGridLayoutManager.LayoutParams
&& (isHeader(holder.getLayoutPosition()) || isFooter(holder.getLayoutPosition()))) {
StaggeredGridLayoutManager.LayoutParams p = (StaggeredGridLayoutManager.LayoutParams) lp;
p.setFullSpan(true);
}
}
/**
* 这里规定 position = 0 时
* 就为头布局，设置为占满整屏幕宽
*/
private boolean isHeader(int position) {
return position >= 0 && position < 1;
}
/**
* 这里规定 position = getItemCount() - 1时
* 就为尾布局，设置为占满整屏幕宽
* getItemCount() 改了 ，这里就不用改
*/
private boolean isFooter(int position) {
return position < getItemCount() && position >= getItemCount() - 1;
}
/**
* footer view
*/
private class FooterViewHolder extends RecyclerView.ViewHolder {
FooterItemBookBinding mBindFooter;
FooterViewHolder(View itemView) {
super(itemView);
mBindFooter = DataBindingUtil.getBinding(itemView);
mBindFooter.rlMore.setGravity(Gravity.CENTER);
// LinearLayoutCompat.LayoutParams params = new LinearLayoutCompat.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ScreenUtils.dipToPx(context, 40));
// itemView.setLayoutParams(params);
}
private void bindItem() {
switch (status) {
case LOAD_MORE:
mBindFooter.progress.setVisibility(View.VISIBLE);
mBindFooter.tvLoadPrompt.setText("正在加载...");
itemView.setVisibility(View.VISIBLE);
break;
case LOAD_PULL_TO:
mBindFooter.progress.setVisibility(View.GONE);
mBindFooter.tvLoadPrompt.setText("上拉加载更多");
itemView.setVisibility(View.VISIBLE);
break;
case LOAD_NONE:
System.out.println("LOAD_NONE----");
mBindFooter.progress.setVisibility(View.GONE);
mBindFooter.tvLoadPrompt.setText("没有更多内容了");
break;
case LOAD_END:
itemView.setVisibility(View.GONE);
default:
break;
}
}
}
private class HeaderViewHolder extends RecyclerView.ViewHolder {
HeaderItemBookBinding mBindBook;
HeaderViewHolder(View view) {
super(view);
mBindBook = DataBindingUtil.getBinding(view);
}
private void bindItem() {
// mBindBook.setBean(book);
// mBindBook.executePendingBindings();
}
}
public void updateLoadStatus(int status) {
this.status = status;
notifyDataSetChanged();
}
public int getLoadStatus(){
return this.status;
}
private class BookViewHolder extends RecyclerView.ViewHolder {
ItemBookBinding mBindBook;
BookViewHolder(View view) {
super(view);
mBindBook = DataBindingUtil.getBinding(view);
}
private void bindItem(final BooksBean book, int position) {
mBindBook.setBean(book);
mBindBook.executePendingBindings();
mBindBook.llItemTop.setOnClickListener(new PerfectClickListener() {
@Override
protected void onNoDoubleClick(View v) {
BookDetailActivity.start(context,book,mBindBook.ivTopPhoto);
}
});
// ViewGroup.LayoutParams params=iVFilm.getLayoutParams();
// int width= ScreenUtils.getScreenWidthDp(context);
// int ivWidth=(width-ScreenUtils.dipToPx(context,80))/3;
// params.width=ivWidth;
// double height=(420.0/300.0)*ivWidth;
// params.height=(int)height;
// iVFilm.setLayoutParams(params);
}
}
public List<BooksBean> getList() {
return list;
}
public void setList(List<BooksBean> list) {
this.list.clear();
this.list = list;
}
public void addAll(List<BooksBean> list) {
this.list.addAll(list);
}
}