安卓实现仿美团的导航栏,而且纵向导航栏上前三条导航为自定义数据,后面的导航为接口请求数据的java代码
时间: 2024-03-22 14:41:09 浏览: 115
首先,需要在布局文件中添加一个纵向的导航栏,可以使用`RecyclerView`来实现。然后,定义一个`Adapter`来填充`RecyclerView`,前三个导航可以在`Adapter`中硬编码,后面的导航可以通过接口请求数据来动态添加。
下面是一个简单的伪代码示例:
```java
public class NavigationAdapter extends RecyclerView.Adapter<NavigationAdapter.ViewHolder> {
private List<String> navigationList;
public NavigationAdapter() {
navigationList = new ArrayList<>();
navigationList.add("自定义导航1");
navigationList.add("自定义导航2");
navigationList.add("自定义导航3");
}
public void addNavigation(String navigation) {
navigationList.add(navigation);
notifyDataSetChanged();
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_navigation, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.navigationText.setText(navigationList.get(position));
}
@Override
public int getItemCount() {
return navigationList.size();
}
static class ViewHolder extends RecyclerView.ViewHolder {
TextView navigationText;
ViewHolder(View itemView) {
super(itemView);
navigationText = itemView.findViewById(R.id.navigation_text);
}
}
}
```
在`Activity`或`Fragment`中,可以这样使用`NavigationAdapter`:
```java
public class NavigationFragment extends Fragment {
private NavigationAdapter adapter;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_navigation, container, false);
RecyclerView navigationRecyclerView = view.findViewById(R.id.navigation_recycler_view);
adapter = new NavigationAdapter();
navigationRecyclerView.setAdapter(adapter);
// 发起接口请求,获取后面的导航数据,然后调用adapter.addNavigation(navigation)来添加导航
return view;
}
}
```
需要注意的是,这只是一个简单的示例代码,实际实现还需要根据具体需求进行优化和完善。
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