[英]Dynamically Add header to recyclerView from arraylist using sort
i have json which converted into model 我有转换成模型的json
Arraylist<model> data
so i want to add header as per type in json so if there are 2 different type in arraylist then there would be 2 header in recyclerView and associated data as list . 所以我想按json中的类型添加标头,因此,如果arraylist中有2种不同的类型,那么recyclerView中将有2个标头,并将相关数据作为list。 so current example i have 2 typ2 - 1)name 2)value so how i can add 2 header in to recyclerView and then all data which having type as name 所以当前示例我有2个typ2-1)name 2)value,所以我如何在recyclerView中添加2个标头,然后将所有类型为name的数据添加
json JSON
{
"info": [
{
"Id": 12,
"Name": "hi",
"Type": "name"
},
{
"Id": 1,
"Name": "hi1",
"Type": "name"
},
{
"Id": 13,
"Name": "hi",
"Type": "value"
},
{
"Id": 15,
"Name": "hi3",
"Type": "name"
},
{
"Id": 16,
"Name": "hi",
"Type": "value"
},
{
"Id": 20,
"Name": "hi5",
"Type": "value"
},
{
"Id": 24,
"Name": "bye",
"Type": "name"
},
{
"Id": 12,
"Name": "hi",
"Type": "name"
}
]
I assume your layout designs is ready as your given image link. 我认为您的布局设计已经准备就绪,可以作为给定的图像链接。 Basically you need 02 layout designs where one is for header & another is for footer in each item. 基本上,您需要02布局设计,其中一项用于页眉,另一项用于页脚。 Now, you can add header dynamically by using your adapter as following: 现在,您可以通过使用适配器来动态添加标头,如下所示:
public class YourRecyclerViewAdapter extends RecyclerView.Adapter {
private final int VIEW_ITEM_HEADER = 1; // type: name/value
private final int VIEW_ITEM_FOOTER = 0;
private List<PojoModel> mData;
private Context mContext;
public YourRecyclerViewAdapter(Context context, List<PojoModel> data) {
this.mContext = context;
this.mData = data;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
RecyclerView.ViewHolder viewHolder;
if (viewType == VIEW_ITEM_HEADER) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_header, parent, false);
viewHolder = new HeaderHolder(view);
} else {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_footer, parent, false);
viewHolder = new FooterHolder(view);
}
return viewHolder;
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
PojoModel item = mData.get(position);
if (holder instanceof HeaderHolder) {
HeaderHolder mHolder = (HeaderHolder)holder;
// do your stuff
} else {
FooterHolder mHolder = (FooterHolder)holder;
// do your stuff
}
}
@Override
public int getItemViewType(int position) {
return mData.get(position) != null ? VIEW_ITEM_HEADER : VIEW_ITEM_FOOTER;
}
@Override
public int getItemCount() {
return mData.size();
}
public class HeaderHolder extends RecyclerView.ViewHolder {
public HeaderHolder(View itemView) {
super(itemView);
// declare your header views
}
}
public class FooterHolder extends RecyclerView.ViewHolder {
public FooterHolder(View itemView) {
super(itemView);
// declare your footer views
}
}
}
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