從databaseHelper創建的列表

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我發現一些教程，創建databaseHelper類，它幫我來從數據庫中的數據填充的GridView和ListView，數據被讀取使用名單，但不知何故，我不知道如何來填充列表到ArrayList中我的GridView和列表視圖，當我嘗試，它說列表無法轉換成ArrayList中。我怎樣才能做到這一點？我在這裏的代碼片斷從databaseHelper創建的列表

databaseHelper.java

public List<Seat> getAllSeats() { 
     List<Seat> seats = new ArrayList<Seat>(); 
     String selectQuery = "SELECT * FROM " + TABLE_SEATS + "WHERE status=0"; 

     Log.e(LOG, selectQuery); 

     SQLiteDatabase db = this.getReadableDatabase(); 
     Cursor c = db.rawQuery(selectQuery, null); 

     // looping through all rows and adding to list 
     if (c.moveToFirst()) { 
      do { 
       Seat seat = new Seat(); 
       seat.set_id(c.getInt((c.getColumnIndex("id")))); 
       seat.set_table_no(c.getString(c.getColumnIndex("table_no"))); 

       // adding to list 
       seats.add(seat); 
      } while (c.moveToNext()); 
     } 
     return seats; 
    }

index.java

/* LIST SEAT */ 
     final ArrayList<Seat> list_seat = db.getAllSeats(); 
     final GridView gridview_seat = (GridView) findViewById(R.id.gridviewSeat); 
     gridview_seat.setAdapter(new SeatListAdapter(this, list_seat));

來源

2017-02-09 Gabriel

只需將您的列表數據轉換成數組列表與下面的代碼...

List<Seat> list = db.getAllSeats(); 
ArrayList<Seat> list_seat = new ArrayList<Seat>(list.size()); 
list_seat .addAll(list);

來源

2017-02-09 08:27:29

爲第三行：arrayList.addAll（名單）;,不應該是list_seat呢？我更新到list_seat及其作品！謝謝！ – Gabriel

是的，你是對的。 –

從databaseHelper創建的列表

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