Android 可扩展列表问题

我正试图用SimpleCursorTreeAdapter构建expandableList，但我的列表不构成组，它将每个子元素作为组元素重复

我的数据格式为KEY_ROWID、KEY_NAME、KEY_EMAIL、KEY_ILID、KEY_KURUMID、KEY_BOLGEID

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我的数据：

(db,"Asli", "asli@gmail.com", 1, 1, 1); 
(db,"Osman Can", "osman@gmail.com", 1, 1, 1); 
(db,"Abuzer Kadayif", "kadayif@gmail.com", 1, 2, 1); 

(db,"Emre", "emre@gmail.com", 1, 3, 2); 
(db,"Deniz", "deniz@gmail.com", 1, 4, 2); 

(db,"Simon Garfunkel", "simon@gmail.com", 1, 5, 0); 
(db,"Eric Clapton", "eric@gmail.com", 1, 6, 0); 
(db,"Neil Young", "neil@gmail.com", 1, 5, 0); 

---

这是我的代码：

String sqlString = "SELECT * " + " FROM " + Items.DATABASE_TABLE;

        Cursor mCursor = db.rawQuery(sqlString, null);

        SimpleCursorTreeAdapter mAdapter = new SimpleCursorTreeAdapter(this,
                mCursor, R.layout.row, R.layout.exprow,
                //createGroupList(), 
                new String[] { Items.KEY_BOLGEID },
                new int[] { R.id.txtItem },
                R.layout.exprow, R.layout.exprow,
                new String[] { Items.KEY_EMAIL,Items.KEY_NAME }, new int[] { R.id.dscItem, R.id.manuItem }) {

            @Override
            protected Cursor getChildrenCursor(Cursor groupCursor) {

                String tempGroup = groupCursor.getString(groupCursor
                        .getColumnIndex(Items.KEY_BOLGEID));

                DbHelper dbh = new DbHelper(BrowseActivity.this);
                SQLiteDatabase db = dbh.getWritableDatabase();

                String sqlString = "SELECT " + Items.KEY_ROWID + ", "
                        + Items.KEY_EMAIL + ", " + Items.KEY_NAME + ", "
                        + Items.KEY_KURUMID + ", " + Items.KEY_BOLGEID + ", "
                        + Items.KEY_ILID + " FROM " + Items.DATABASE_TABLE
                        + " WHERE " + Items.KEY_BOLGEID + "= "  + tempGroup 
                        ;
                Cursor mCursor = db.rawQuery(sqlString, null);

                return mCursor;

            }


        };

        browseView.setAdapter(mAdapter);

    }

我的结果应该是：

Group 1:
(db,"Asli", "asli@gmail.com", 1, 1, 1); 
(db,"Osman Can", "osman@gmail.com", 1, 1, 1); 
(db,"Abuzer Kadayif", "kadayif@gmail.com", 1, 2, 1); 
Group 2:        
(db,"Emre", "emre@gmail.com", 1, 3, 2); 
(db,"Deniz", "deniz@gmail.com", 1, 4, 2); 
Group 3:        
(db,"Simon Garfunkel", "simon@gmail.com", 1, 5, 0); 
(db,"Eric Clapton", "eric@gmail.com", 1, 6, 0); 
(db,"Neil Young", "neil@gmail.com", 1, 5, 0);

但事实确实如此 第1组3次 2次第2组 3次0组

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我试图更改groupCursor的sql，但它崩溃了。

您需要更改第一条sql语句，以便只返回一次所需的组。现在，您将为每条记录获取它，因此适配器将为每条记录提供一个组。将SQL更改为：

String sqlString = SELECT DISTINCT " + Items.KEY_BOLGEID + " AS _id FROM " + Items.DATABASE_TABLE;

这将为每个要分组的项目提供一个实例（并将其设置为适配器所需的_id列）

---

然后在适配器调用的组部分使用

newstring[]{u id}

。

您还需要这方面的指导吗？我正在做类似的事情