Android 如何在一个字段中随机选择一条记录

我创建了如下SQLite数据库表：

_id  ||   Column1   ||    Column2    ||
1    ||    test1    ||   a,b,c,d,e,f ||
2    ||    test2    ||   g,h,i,j,k,l ||
3    ||    test3    ||   m,n,o,p,q,r ||

_id  ||   Column1   ||    Column2    ||
1    ||    test1    ||   d           ||
2    ||    test2    ||   k           ||
3    ||    test3    ||   r           ||

  @Override
  public View newView(Context context, Cursor cursor, ViewGroup parent) {
      Cursor c = getCursor();
      final LayoutInflater inflater = LayoutInflater.from(context);
      View v = inflater.inflate(layout, parent, false);
      int column2Name= c.getColumnIndex(DBAdapter.COLUMN2);
      String col2Name= c.getString(column2Name);
      String[] temp;
      Random random = new Random();
          temp = col2Name.split(",");
          String col2 = temp[random.nextInt(temp.length)];
      TextView col2_name = (TextView) v.findViewById(R.id.column2_label);
      if (col2_name != null) {
          col2_name .setText(col2);
      }
      return v;
  }

  @Override
  public void bindView(View v, Context context, Cursor c) {
      int column2Name= c.getColumnIndex(DBAdapter.COLUMN2);
          String col2Name= c.getString(column2Name);
          String[] temp;
          Random random = new Random();
              temp = col2Name.split(",");
              String col2 = temp[random.nextInt(temp.length)];
          TextView col2_name = (TextView) v.findViewById(R.id.column2_label);
      if (col2_name != null) {
          col2_name .setText(col2);
      }
    }

如何从该表中随机选择第2列中的一个

我想要这样的结果：

_id  ||   Column1   ||    Column2    ||
1    ||    test1    ||   a,b,c,d,e,f ||
2    ||    test2    ||   g,h,i,j,k,l ||
3    ||    test3    ||   m,n,o,p,q,r ||

_id  ||   Column1   ||    Column2    ||
1    ||    test1    ||   d           ||
2    ||    test2    ||   k           ||
3    ||    test3    ||   r           ||

  @Override
  public View newView(Context context, Cursor cursor, ViewGroup parent) {
      Cursor c = getCursor();
      final LayoutInflater inflater = LayoutInflater.from(context);
      View v = inflater.inflate(layout, parent, false);
      int column2Name= c.getColumnIndex(DBAdapter.COLUMN2);
      String col2Name= c.getString(column2Name);
      String[] temp;
      Random random = new Random();
          temp = col2Name.split(",");
          String col2 = temp[random.nextInt(temp.length)];
      TextView col2_name = (TextView) v.findViewById(R.id.column2_label);
      if (col2_name != null) {
          col2_name .setText(col2);
      }
      return v;
  }

  @Override
  public void bindView(View v, Context context, Cursor c) {
      int column2Name= c.getColumnIndex(DBAdapter.COLUMN2);
          String col2Name= c.getString(column2Name);
          String[] temp;
          Random random = new Random();
              temp = col2Name.split(",");
              String col2 = temp[random.nextInt(temp.length)];
          TextView col2_name = (TextView) v.findViewById(R.id.column2_label);
      if (col2_name != null) {
          col2_name .setText(col2);
      }
    }

假设d，k，r是每个记录第2列的随机值

谢谢

更新： 我创建了CustomAdapter并添加了一些视图，如下所示：

_id  ||   Column1   ||    Column2    ||
1    ||    test1    ||   a,b,c,d,e,f ||
2    ||    test2    ||   g,h,i,j,k,l ||
3    ||    test3    ||   m,n,o,p,q,r ||

_id  ||   Column1   ||    Column2    ||
1    ||    test1    ||   d           ||
2    ||    test2    ||   k           ||
3    ||    test3    ||   r           ||

  @Override
  public View newView(Context context, Cursor cursor, ViewGroup parent) {
      Cursor c = getCursor();
      final LayoutInflater inflater = LayoutInflater.from(context);
      View v = inflater.inflate(layout, parent, false);
      int column2Name= c.getColumnIndex(DBAdapter.COLUMN2);
      String col2Name= c.getString(column2Name);
      String[] temp;
      Random random = new Random();
          temp = col2Name.split(",");
          String col2 = temp[random.nextInt(temp.length)];
      TextView col2_name = (TextView) v.findViewById(R.id.column2_label);
      if (col2_name != null) {
          col2_name .setText(col2);
      }
      return v;
  }

  @Override
  public void bindView(View v, Context context, Cursor c) {
      int column2Name= c.getColumnIndex(DBAdapter.COLUMN2);
          String col2Name= c.getString(column2Name);
          String[] temp;
          Random random = new Random();
              temp = col2Name.split(",");
              String col2 = temp[random.nextInt(temp.length)];
          TextView col2_name = (TextView) v.findViewById(R.id.column2_label);
      if (col2_name != null) {
          col2_name .setText(col2);
      }
    }

---

现在，只需在活动中使用该customAdapter，就可以将column2显示为1个随机值。

一旦从数据库中获得了数据，在Java中就更容易做到这一点

Random RANDOM = new Random(System.currentTimeMillis());

int index = cursor.getColumnIndex("Column2");
String value = cursor.getString(index);
String[] values = value.split(",");
String randomValue = values[RANDOM.nextInt(values.length)];

---

尝试

按random（）限制1从表顺序中选择列不，我的意思是，不是所有的列都随机显示，只是列2YUP yup上的记录，或者我不想所有的行都随机选择，只是列2的值，随机选择1，就像我说的
按随机顺序从表中选择列2（）限制1看第一个示例：））