diff --git a/widget/BaseAdapter.md b/widget/BaseAdapter.md
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+### **Adapter适配器**
+>+ openharmony API: ohos.agp.components.BaseItemProvider
+>+ openharmony SDK版本：2.1.1.20 以上
+>+ IDE版本：2.1.0.303
+>+ 实现方案：替换使用,使用方法如下:
+```java
+// 原列表级控件的适配器Adapter，鸿蒙化后为使用提供者BaseItemProvider，重写此类的方法，实现对数据条目的适配
+public class SampleItemProvider extends BaseItemProvider {
+    final List<SampleItem> list;
+    final Context context;
+    public SampleItemProvider(List<SampleItem> list, Context context) {
+        this.list = list;
+        this.context = context;
+    }
+
+    @Override
+    public int getCount() {
+        return list == null ? 0 : list.size();
+    }
+    @Override
+    public Object getItem(int position) {
+        if (list != null && position >= 0 && position < list.size()) {
+            return list.get(position);
+        }
+        return null;
+    }
+    @Override
+    public long getItemId(int position) {
+        return position;
+    }
+    @Override
+    public Component getComponent(int position, Component convertComponent, ComponentContainer componentContainer) {
+        final Component cpt;
+        if (convertComponent == null) {
+            cpt = LayoutScatter.getInstance(context).parse(ResourceTable.Layout_wearmenu_list_element, null, false);
+        } else {
+            cpt = convertComponent;
+        }
+        SampleItem sampleItem = list.get(position);
+        Text text = (Text) cpt.findComponentById(ResourceTable.Id_text);
+        text.setText(sampleItem.getName());
+        Image image = (Image) cpt.findComponentById(ResourceTable.Id_imageButton);
+        image.setPixelMap(sampleItem.getImage());
+        return cpt;
+    }
+
+}
+```
diff --git a/widget/CheckBox.md b/widget/CheckBox.md
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+### **setOnCheckedChangeListener(listener: CompoundButton.OnCheckedChangeListener?)**
+>+ openharmony API: ohos.agp.components.Checkbox
+>+ openharmony SDK版本：2.1.1.20 以上
+>+ IDE版本：2.1.0.303
+>+ 实现方案：替换使用,使用方法如下:
+```java
+// 先通过Ability. findComponentById(ResourceTable.Id_check_box_1)进行初始化checkbox，
+// 再给checkbox设置一个点击事件，再实现点击监听类对该checkbox进行选择状态判断
+Checkbox checkbox = (Checkbox) findComponentById(ResourceTable.Id_pagerFather);
+Component.ClickedListener clickedListener = new Component.ClickedListener(){
+
+    @Override
+    public void onClick(Component component) {
+        //do something
+    }
+};
+checkbox.setClickedListener(clickedListener);
+```