ExpandPopViewDemo

仿美团下拉 一、二级列表 （待续完善）

• 使用方法

  1. 引入

   compile 'com.example.thatnight:expandpopview:1.1.6'
  

  2. 布局中

    <com.example.expandpopview.view.ExpandPopView
       android:id="@+id/elv_main"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       />
  

  3. 代码中

   public class MainActivity extends AppCompatActivity {
  
       private ExpandPopView mExpandPopView;
       private List<KeyValue> mParentList;
       private List<KeyValue> mChildList;
       private List<List<KeyValue>> mParentChild;
       private List<KeyValue> mOneList;
  
       @Override
       protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.activity_main);
           mExpandPopView = findViewById(R.id.elv_main);
           mParentList = new ArrayList<>();
           mParentChild = new ArrayList<>();
           mOneList = new ArrayList<>();
  
           for (int i = 0; i < 10; i++) {
               mOneList.add(new KeyValue("一级列表" + i, i + ""));
           }
           mExpandPopView.addItemToExpandTab("一级", mOneList, new OnOneListCallback() {
               @Override
               public void returnKeyValue(int pos, KeyValue keyValue) {
                   Toast.makeText(MainActivity.this, keyValue.getKey() + " " + keyValue.getValue(), Toast.LENGTH_SHORT).show();
  
               }
  
           });
  
           for (int i = 0; i < 10; i++) {
               mParentList.add(new KeyValue("安卓分类" + i, i + ""));
               mChildList = new ArrayList<>();
               for (int j = 0; j < 2; j++) {
                   mChildList.add(new KeyValue(i + " " + j, j + ""));
               }
               mParentChild.add(mChildList);
           }
           mExpandPopView.addItemToExpandTab("二级", mParentList, mParentChild, new OnTwoListCallback() {
               @Override
               public void returnParentKeyValue(int pos, KeyValue keyValue) {
                   Toast.makeText(MainActivity.this, pos + "  " + keyValue.getKey() + " " + keyValue.getValue(), Toast.LENGTH_SHORT).show();
   //                mChildList = new ArrayList<>();
   //                for (int j = 0; j < 2; j++) {
   //                    mChildList.add(new KeyValue(j + "asd" + j, j + ""));
   //                }
   //                mExpandPopView.refreshItemChildrenData(1, mChildList);
               }
  
               @Override
               public void returnChildKeyValue(int pos, KeyValue keyValue) {
                   Toast.makeText(MainActivity.this, pos + "  " + keyValue.getKey() + " " + keyValue.getValue(), Toast.LENGTH_SHORT).show();
  
               }
           });
       }
   }
  

• 已实现功能

  • 支持一、二级列表
  • 支持更新列表和子列表

• 待完善

  • 列表的下拉箭头
  • 性能和资源的优化
  • 支持扩展（多级列表）

• 参考demo

  https://github.com/yihu0817/ExpandPopTabView