我在那个RecyclerView里面有一个recyclerView,我添加了两个部分Favorites
,All Contacts
。为了添加我使用的部分,现在我有了硬编码的部分(行和部分的索引)的行,我想通过选择行来添加行到favorite
部分,因为没有关于我想要的东西的文档,我不知道从哪里开始,或者我必须做什么?
如果有人知道如何通过选择All Contacts
部分(这是行的默认位置)添加行。那么,请给我一些提示,告诉我该怎么做
我想要的是这样的:
按下按钮添加到收藏夹
任何指导都会对我很有帮助,谢谢。
发布于 2016-04-25 16:54:18
您可以使用库SectionedRecyclerViewAdapter来实现,而不必硬编码标题/行索引。
首先创建一个Section类来对项目进行分组:
class MySection extends StatelessSection {
String title;
List<String> list;
public MySection(String title, List<String> list) {
// call constructor with layout resources for this Section header, footer and items
super(R.layout.section_header, R.layout.section_item);
this.title = title;
this.list = list;
}
@Override
public int getContentItemsTotal() {
return list.size(); // number of items of this section
}
@Override
public RecyclerView.ViewHolder getItemViewHolder(View view) {
// return a custom instance of ViewHolder for the items of this section
return new MyItemViewHolder(view);
}
@Override
public void onBindItemViewHolder(RecyclerView.ViewHolder holder, int position) {
MyItemViewHolder itemHolder = (MyItemViewHolder) holder;
// bind your view here
itemHolder.tvItem.setText(list.get(position));
}
@Override
public RecyclerView.ViewHolder getHeaderViewHolder(View view) {
return new SimpleHeaderViewHolder(view);
}
@Override
public void onBindHeaderViewHolder(RecyclerView.ViewHolder holder) {
MyHeaderViewHolder headerHolder = (MyHeaderViewHolder) holder;
// bind your header view here
headerHolder.tvItem.setText(title);
}
}
然后使用您的部分设置RecyclerView:
// Create an instance of SectionedRecyclerViewAdapter
SectionedRecyclerViewAdapter sectionAdapter = new SectionedRecyclerViewAdapter();
// Create your sections with the list of data
MySection favoritesSection = new MySection("Favorites", favoritesList);
MySection contactsSection = new MySection("Add Favorites", contactsList);
// Add your Sections to the adapter
sectionAdapter.addSection(favoritesSection);
sectionAdapter.addSection(contactsSection);
// Set up your RecyclerView with the SectionedRecyclerViewAdapter
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerview);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
recyclerView.setAdapter(sectionAdapter);
你可以找到一个如何收听按钮点击here的例子。
您还可以向您的节添加新行,而不必重新计算索引,只需在您的Section类中创建如下方法:
public void addRow(String item) {
this.list.add(item);
}
然后:
favoritesSection.addRow("new item");
sectionAdapter.notifyDataSetChanged();
https://stackoverflow.com/questions/35870678
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