在安卓系统中创建多级滚动菜单,可以通过使用RecyclerView和ExpandableListView来实现。
下面是一个示例代码,演示如何在安卓系统中创建多级滚动菜单:
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/parentRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ExpandableListView
android:id="@+id/childExpandableListView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
List<String> parentMenuList = Arrays.asList("菜单1", "菜单2", "菜单3");
Map<String, List<String>> childMenuMap = new HashMap<>();
childMenuMap.put("菜单1", Arrays.asList("子菜单1-1", "子菜单1-2", "子菜单1-3"));
childMenuMap.put("菜单2", Arrays.asList("子菜单2-1", "子菜单2-2"));
childMenuMap.put("菜单3", Arrays.asList("子菜单3-1", "子菜单3-2", "子菜单3-3", "子菜单3-4"));
public class MenuAdapter extends RecyclerView.Adapter<MenuAdapter.ParentViewHolder> {
private List<String> parentMenuList;
private Map<String, List<String>> childMenuMap;
public MenuAdapter(List<String> parentMenuList, Map<String, List<String>> childMenuMap) {
this.parentMenuList = parentMenuList;
this.childMenuMap = childMenuMap;
}
@NonNull
@Override
public ParentViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_parent_menu, parent, false);
return new ParentViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull ParentViewHolder holder, int position) {
String parentMenu = parentMenuList.get(position);
holder.parentMenuTextView.setText(parentMenu);
List<String> childMenuList = childMenuMap.get(parentMenu);
ChildMenuAdapter childMenuAdapter = new ChildMenuAdapter(childMenuList);
holder.childMenuExpandableListView.setAdapter(childMenuAdapter);
}
@Override
public int getItemCount() {
return parentMenuList.size();
}
public static class ParentViewHolder extends RecyclerView.ViewHolder {
TextView parentMenuTextView;
ExpandableListView childMenuExpandableListView;
public ParentViewHolder(@NonNull View itemView) {
super(itemView);
parentMenuTextView = itemView.findViewById(R.id.parentMenuTextView);
childMenuExpandableListView = itemView.findViewById(R.id.childMenuExpandableListView);
}
}
}
public class ChildMenuAdapter extends BaseExpandableListAdapter {
private List<String> childMenuList;
public ChildMenuAdapter(List<String> childMenuList) {
this.childMenuList = childMenuList;
}
@Override
public int getGroupCount() {
return 1;
}
@Override
public int getChildrenCount(int groupPosition) {
return childMenuList.size();
}
@Override
public Object getGroup(int groupPosition) {
return null;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return null;
}
@Override
public long getGroupId(int groupPosition) {
return 0;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return 0;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_child_menu_group, parent, false);
}
TextView groupTextView = convertView.findViewById(R.id.groupTextView);
groupTextView.setText("子菜单");
return convertView;
}
@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_child_menu, parent, false);
}
TextView childTextView = convertView.findViewById(R.id.childTextView);
String childMenu = childMenuList.get(childPosition);
childTextView.setText(childMenu);
return convertView;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
RecyclerView parentRecyclerView = findViewById(R.id.parentRecyclerView);
ExpandableListView childExpandableListView = findViewById(R.id.childExpandableListView);
parentRecyclerView.setLayoutManager(new LinearLayoutManager(this));
MenuAdapter menuAdapter = new MenuAdapter(parentMenuList, childMenuMap);
parentRecyclerView.setAdapter(menuAdapter);
childExpandableListView.setAdapter(menuAdapter.getChildMenuAdapter());
这样,就可以在安卓系统中创建一个类似Camera360应用程序的多级滚动菜单。请注意,上述代码仅为示例,实际应用中可能需要根据具体需求进行适当修改和优化。
腾讯云相关产品和产品介绍链接地址:
领取专属 10元无门槛券
手把手带您无忧上云