一个RecyclerView列表显示多种类型的Item

一个列表中Item的显示可能有多种类型，比如Item的界面有多个类型，或者Item的数据有多个类型。

以下自定义了一个Adapter的框架结构，代码简洁，只需稍作修改就可以使用。

/**
* 一个RecyclerView显示多种不同数据类型或界面的Item
* ldw
*/
public class MyAdapter extends RecyclerView.Adapter {

private static final int ITEM_VIEW_TYPE_HEADER = 0;
private static final int ITEM_VIEW_TYPE_ITEM = 1;

/** 数据列表，数据包含HeaderBean和ItemBean，且两者都继承于Bean */
private List<Bean> dataList;
private Context context;

public MyAdapter(Context context, List<Bean> list) {
this.context = context;
dataList = list;
}

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (viewType == ITEM_VIEW_TYPE_HEADER) {
return new HeaderHolder(LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_header, parent, false));
} else {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_text, parent, false);
return new ItemHolder(view);
}
}

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
if (getItemViewType(position) == ITEM_VIEW_TYPE_HEADER) {
HeaderHolder headerHolder = (HeaderHolder) holder;
HeaderBean itemBean = (HeaderBean) dataList.get(position);
headerHolder.textView.setText(itemBean.getName());
} else {
ItemHolder itemHolder = (ItemHolder) holder;
ItemBean itemBean = (ItemBean) dataList.get(position);
itemHolder.textView.setText(itemBean.getName());
}
}

@Override
public long getItemId(int i) {
return i;
}

@Override
public int getItemCount() {
return dataList.size();
}

@Override
public int getItemViewType(int position) {
return isHeader(position) ? ITEM_VIEW_TYPE_HEADER : ITEM_VIEW_TYPE_ITEM;
}

private boolean isHeader(int position) {
return dataList.get(position) instanceof HeaderBean;
}

public class HeaderHolder extends RecyclerView.ViewHolder {
private View image;
private TextView textView;

public HeaderHolder(View itemView) {
super(itemView);
image = itemView.findViewById(R.id.header_image);
textView = (TextView) itemView.findViewById(R.id.header_text);
}
}

public class ItemHolder extends RecyclerView.ViewHolder {
private TextView textView;

public ItemHolder(View itemView) {
super(itemView);
textView = (TextView) itemView.findViewById(R.id.item_text);
}
}

}

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作者：Dway
来源：CSDN
原文：https://blog.csdn.net/lin_dianwei/article/details/68064902
版权声明：本文为博主原创文章，转载请附上博文链接！