Sticky header for recyclerView. For more information please see this website
grab lastest version via Maven:
<dependency>
<groupId>com.saber</groupId>
<artifactId>stickyheader</artifactId>
<version>1.0</version>
<type>pom</type>
</dependency>or Gradle:
compile 'com.saber:stickyheader:1.0'extend from StickHeaderRecyclerView and add your main data and header data as generic type. switch on your viewType and bind your viewHolder of your headers and conents. Your headers and contents can be as many as you want.
public class YourRecyclerAdapter extends StickHeaderRecyclerView<CustomerData, HeaderDataImpl> {
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
switch (viewType) {
case HeaderDataImpl.HEADER_TYPE_1:
return new HeaderViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.header1_item_recycler, parent, false));
case HeaderDataImpl.HEADER_TYPE_2:
return new Header2ViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.header2_item_recycler, parent, false));
default:
return new ViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_recycler, parent, false));
}
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
if (holder instanceof ViewHolder) {
((ViewHolder) holder).bindData(position);
} else if (holder instanceof HeaderViewHolder){
((HeaderViewHolder) holder).bindData(position);
} else if (holder instanceof Header2ViewHolder){
((Header2ViewHolder) holder).bindData(position);
}
}
@Override
public void bindHeaderData(View header, int headerPosition) {
// this method is called when your header move and you must not only bind header data in HeaderViewHolder
//but also bind header data here.
TextView tv = header.findViewById(R.id.tvHeader);
tv.setText(String.valueOf(headerPosition / 5));
}
}Next you must implement StickyMainData in your main data class:
public class CustomerData implements StickyMainData {
//...
}Next you must create your header class:
public class HeaderDataImpl implements HeaderData {
public static final int HEADER_TYPE_1 = 1;
public static final int HEADER_TYPE_2 = 2;
private int headerType;
@LayoutRes
private final int layoutResource;
public HeaderDataImpl(int headerType, @LayoutRes int layoutResource) {
this.layoutResource = layoutResource;
this.headerType = headerType;
}
@LayoutRes
@Override
public int getHeaderLayout() {
//retunr layout of yourHeader
return layoutResource;
}
@Override
public int getHeaderType() {
return headerType;
}
}Now define your recyclerView and atach your adapter to it:
@Override
protected void onCreate(Bundle savedInstanceState) {
RecyclerView recyclerView = findViewById(R.id.recyclerView);
RecyclerAdapter adapter = new RecyclerAdapter();
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
setData(adapter);
//...
}
private void setData(RecyclerAdapter adapter) {
HeaderDataImpl headerData1 = new HeaderDataImpl(HeaderDataImpl.HEADER_TYPE_1, R.layout.header1_item_recycler);
HeaderDataImpl headerData2 = new HeaderDataImpl(HeaderDataImpl.HEADER_TYPE_2, R.layout.header2_item_recycler);
List<CustomerData> items = new ArrayList<>();
items.add(new CustomerData());
items.add(new CustomerData());
items.add(new CustomerData());
items.add(new CustomerData());
adapter.setHeaderAndData(items, headerData1);
items = new ArrayList<>();
items.add(new CustomerData());
items.add(new CustomerData());
items.add(new CustomerData());
items.add(new CustomerData());
adapter.setHeaderAndData(items, headerData2);
}When you extent StickHeaderRecyclerView, you can't override getItemViewType() method anymore. So if you have multi data type you must override getViewType() function and put your code there.
Copyright 2018 Saber Solooki
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
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