public abstract class RecyclerAdapter<T> extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder<T>> implements
View.OnClickListener, View.OnLongClickListener, AdapterCallback<T> {
private final List<T> mDataList;
private AdapterListener<T> mListener;
/**
* 构造函数
*/
public RecyclerAdapter() {
this(null);
}
/**
* 构造函数
*/
public RecyclerAdapter(AdapterListener<T> listener) {
this(new ArrayList<T>(), listener);
}
/**
* 构造函数
*/
public RecyclerAdapter(List<T> dataList, AdapterListener<T> listener) {
this.mDataList = dataList;
this.mListener = listener;
}
/**
* 创建一个ViewHolder
*
* @param parent RecyclerView
* @param viewType 界面类型
* @return ViewHolder
*/
@Override
public ViewHolder<T> onCreateViewHolder(ViewGroup parent, int viewType) {
// 将xml (id为viewType)的文件初始化为一个root View
View root = LayoutInflater.from(parent.getContext()).inflate(viewType, parent, false);
// 通过子类必须实现的方法,得到一个ViewHolder
ViewHolder<T> holder = onCreateViewHolder(root, viewType);
// 设置View的Tag为ViewHolder,进行双向绑定 通过tag获取ViewHolder
root.setTag(R.id.tag_recycler_holder, holder);
// 设置view的点击事件
root.setOnClickListener(this);
root.setOnLongClickListener(this);
// 进行界面注解绑定
holder.unbinder = ButterKnife.bind(holder, root);
// 绑定callback
holder.callback = this;
return holder;
}
@Override
public int getItemViewType(int position) {
return getItemViewType(position, mDataList.get(position));
}
protected abstract int getItemViewType(int position, T data);
protected abstract ViewHolder<T> onCreateViewHolder(View view, int viewType);
/**
* 绑定数据到一个ViewHolder上
*
* @param holder ViewHolder
* @param position 坐标
*/
@Override
public void onBindViewHolder(ViewHolder<T> holder, int position) {
// 得到需要绑定的数据
T data = mDataList.get(position);
// 绑定数据
holder.bind(data);
}
@Override
public int getItemCount() {
return mDataList.size();
}
/**
* 插入一条数据并通知插入
*
* @param data
*/
public void add(T data) {
mDataList.add(data);
// notifyDataSetChanged();
notifyItemInserted(mDataList.size() - 1);
}
/**
* 插入一堆数据,并通知这段集合更新
*
* @param dataList
*/
public void addAll(T... dataList) {
if (dataList != null && dataList.length > 0) {
int startPos = mDataList.size();
Collections.addAll(mDataList, dataList);
notifyItemRangeInserted(startPos, dataList.length);
}
}
/**
* 插入一堆数据,并通知这段集合更新
*
* @param dataList
*/
public void addAll(Collection<T> dataList) {
if (dataList != null && dataList.size() > 0) {
int startPos = mDataList.size();
mDataList.addAll(dataList);
notifyItemRangeInserted(startPos, dataList.size());
}
}
/**
* 删除操作
*/
public void clean() {
mDataList.clear();
notifyDataSetChanged();
}
/**
* 替换一个新的集合。其中包括了清空
*
* @param dataList 一个新的集合
*/
public void replace(Collection<T> dataList) {
mDataList.clear();
if (dataList == null || dataList.size() == 0)
return;
mDataList.addAll(dataList);
notifyDataSetChanged();
}
@Override
public void upData(T data, ViewHolder<T> viewHolder) {
int pos = viewHolder.getAdapterPosition();
if (pos > 0) {
mDataList.remove(pos);
mDataList.add(pos, data);
notifyItemChanged(pos);
}
}
@Override
public void onClick(View v) {
ViewHolder viewHolder = (ViewHolder) v.getTag(R.id.tag_recycler_holder);
if (this.mListener != null) {
// 得到ViewHolder当前对应的适配器中的坐标
int pos = viewHolder.getAdapterPosition();
// 回调方法
this.mListener.onItemClick(viewHolder, mDataList.get(pos));
}
}
@Override
public boolean onLongClick(View v) {
ViewHolder viewHolder = (ViewHolder) v.getTag(R.id.tag_recycler_holder);
if (this.mListener != null) {
// 得到ViewHolder当前对应的适配器中的坐标
int pos = viewHolder.getAdapterPosition();
// 回调方法
this.mListener.onItemLongClick(viewHolder, mDataList.get(pos));
}
return false;
}
/**
* 设置适配器监听
*
* @param adapterListener
*/
public void setListerner(AdapterListener<T> adapterListener) {
this.mListener = adapterListener;
}
/**
* 自定义点击监听器
*
* @param <T>
*/
public interface AdapterListener<T> {
// 当Cell点击时触发
void onItemClick(RecyclerAdapter.ViewHolder holder, T data);
// 当Cell长按时触发
void onItemLongClick(RecyclerAdapter.ViewHolder holder, T data);
}
public static abstract class ViewHolder<T> extends RecyclerView.ViewHolder {
protected T mData;
private Unbinder unbinder;
private AdapterCallback<T> callback;
public ViewHolder(View itemView) {
super(itemView);
}
/**
* 用于绑定数据的触发
*
* @param data 绑定的数据
*/
void bind(T data) {
this.mData = data;
onBind(mData);
}
/**
* 当触发绑定数据的时候的回调,必须复写
*
* @param data 绑定的数据
*/
protected abstract void onBind(T data);
/**
* Holder自己对自己对应的Data进行更新操作
*
* @param data
*/
public void updataData(T data) {
if (this.callback != null) {
this.callback.upData(data, this);
}
}
}
public static abstract class AdapterListenerImpl<T> implements AdapterListener<T>{
@Override
public void onItemClick(ViewHolder holder, T data) {
}
@Override
public void onItemLongClick(ViewHolder holder, T data) {
}
}
}
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