add: comments for better reference during maintaining

src/main/java/net/micode/notes/ui/NotesListAdapter.java

@@ -34,6 +34,7 @@ import java.util.Iterator;
 public class NotesListAdapter extends CursorAdapter {
     private static final String TAG = "NotesListAdapter";
     private Context mContext;
+     /** 键-值对，值为true时，表示被选中 @zhoukexing 2024/1/2 20:50 */
     private HashMap<Integer, Boolean> mSelectedIndex;
     private int mNotesCount;
     private boolean mChoiceMode;
@@ -78,6 +79,17 @@ public class NotesListAdapter extends CursorAdapter {
         mChoiceMode = mode;
     }
 
+    /**
+     * @method:  selectAll
+     * @description: 传入一个boolean值，
+     * 通过setCheckedItem来修改mSelectedIndex数据成员，
+     * 将值都置为传入的参数，
+     * 达到选中所有项 or 不选所有项的效果。
+     * @date: 2024/1/3 22:36
+     * @author: zhoukexing
+     * @param: [checked]
+     * @return: void
+     */
     public void selectAll(boolean checked) {
         Cursor cursor = getCursor();
         for (int i = 0; i < getCount(); i++) {
@@ -143,6 +155,18 @@ public class NotesListAdapter extends CursorAdapter {
         return count;
     }
 
+    public int getMNotesCount() {
+        return mNotesCount;
+    }
+
+    /**
+     * @method:  isAllSelected
+     * @description: 如果都选中了就返回true，否则返回false
+     * @date: 2024/1/2 20:47
+     * @author: zhoukexing
+     * @param: []
+     * @return: boolean
+     */
     public boolean isAllSelected() {
         int checkedCount = getSelectedCount();
         return (checkedCount != 0 && checkedCount == mNotesCount);