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  • sqlite查询,分页查询

    private static final String TABLENAME = "mytab";
     private SQLiteDatabase db = null;

     public Qu(SQLiteDatabase db) {
      this.db = db;
     }

     public List<String> find() {
      List<String> all = new ArrayList<String>();
      String sql = "select id,name,birthday from mytab";
       Cursor result = db.rawQuery(sql, null);

                         从第一个开始查            不是最后一个            移动到下一个
       for (result.moveToFirst(); !result.isAfterLast(); result.moveToNext())
       {
       all.add(result.getInt(0)+result.getString(1)+result.getString(2));
       }
       db.close();

    return all;

    }

      List<String> all = new ArrayList<String>();

     String[] da ={"id","name","birthday"};
      Cursor result = db.query(TABLENAME, da, null, null, null, null,null);
       for (result.moveToFirst(); !result.isAfterLast(); result.moveToNext())
       {
       all.add(result.getInt(0)+result.getString(1)+result.getString(2));
       }
       db.close();

    return all;

     String sql = "select id,name,birthday from mytab where name like ? or birthday like ?";
      String keyword = "5";
      String[] args = new String[] { "%" + keyword + "%", "%" + keyword + "%" };
      Cursor result = db.rawQuery(sql, args);
      for (result.moveToFirst(); !result.isAfterLast(); result.moveToNext()) {
       all.add(result.getInt(0) + result.getString(1)
         + result.getString(2));
      }
      return all;

    public List<String> select() {
            List<String> all = new ArrayList<String>();
    
            String sql = "select * from user where user_name like ? limit ?,?";
            int group = 2;//分的页数,下标从0开始,因此我们想得到第二页得要-1
            int size = 5;//每页显示的个数
            String[] srgs = {"%d%",String.valueOf((group-1)*size),String.valueOf(size)};
            Cursor cu = db.rawQuery(sql, srgs);
            while(cu.moveToNext()){
                all.add(cu.getInt(0)+cu.getString(1)+cu.getString(2));
            }
            db.close();
            return all;
    
        }
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  • 原文地址:https://www.cnblogs.com/84126858jmz/p/4915244.html
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