最近在开发项目中遇到了实现类似淘宝首页的需求，使用listView可以解决，在此记录一下。
实现步骤：
- 重写 getViewTypeCount() – 返回你有多少个不同的布局
- 重写 getItemViewType(int) – 由position返回view type id
- 根据view item的类型，在getView中创建正确的convertView
下面是代码示例：
Activity:
HomeItem jchdItem = new HomeItem(); jchdItem.setItemType(ItemType.JCHD); homeItems.add(jchdItem);
HomeItem yhhdItem = new HomeItem(); yhhdItem.setItemType(ItemType.YHHD_LIST); List<YhhdBean> yhhdLists = new ArrayList<>(); for (int i = 0; i < privilege.size(); i++) { JSONObject object2 = privilege.getJSONObject(i); YhhdBean yhhdList = new YhhdBean(); yhhdLists.add(yhhdList); } yhhdItem.setYhhdLists(yhhdLists); homeItems.add(yhhdItem); adapter = new HomeAdapter(getActivity(), homeItems); lv_home_list.setAdapter(adapter);
layout:
<ListView android:id="@+id/lv_home_list" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:divider="@null" android:overScrollMode="never" android:scrollbars="none" />
Adapter：
public class HomeAdapter extends BaseAdapter {
private Context context;
private List<HomeItem> list;
private final static int JCHD = 3;
private final static int YHHD_LIST = 4;
public HomeAdapter(Context context, List<HomeItem> list) {
this.context = context;
this.list = list;
}
@Override
public int getCount() {
return list != null ? list.size() : 0;
}
@Override
public Object getItem(int i) {
return list == null ? null : list.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
HomeItem homeItem = list.get(i);
LayoutInflater inflater = LayoutInflater.from(context);
YhhdHodlder yhhdHodlder;
YhhdListHolder yhhdListHolder;
int type = homeItem.getItemType().getValue();
switch (type) {
case JCHD:
if (view == null) {
view = inflater.inflate(R.layout.view_yhhd, null);
yhhdHodlder = new YhhdHodlder(context, view, "精彩");
view.setTag(yhhdHodlder);
} else {
yhhdHodlder = (YhhdHodlder) view.getTag();
}
break;
case YHHD_LIST:
if (view == null) {
view = inflater.inflate(R.layout.view_main_yhhd_list, null);
yhhdListHolder = new YhhdListHolder(context, view);
view.setTag(yhhdListHolder);
} else {
yhhdListHolder = (YhhdListHolder) view.getTag();
}
yhhdListHolder.initView(homeItem);
break;
}
return view;
}
@Override
public int getItemViewType(int position) {
if (list != null && position < list.size()) {
return list.get(position).getItemType().getValue();
}
return super.getItemViewType(position);
}
@Override
public int getViewTypeCount() {
return 2;
}
}
HomeItem:
public class HomeItem {
private ItemType itemType;
private List<YhhdBean> yhhdLists;
public ItemType getItemType() {
return itemType;
}
public void setItemType(ItemType itemType) {
this.itemType = itemType;
}
public List<YhhdBean> getYhhdLists() {
return yhhdLists;
}
public void setYhhdLists(List<YhhdBean> yhhdLists) {
this.yhhdLists = yhhdLists;
}
}
ItemType:
public enum ItemType {
JCHD(3),
YHHD_LIST(4);
public int getValue() {
return value;
}
private int value;
ItemType(int value) {
this.value = value;
}
}
