problem with blob

set one image for every id in my database but only got the first row blob !

this is my database.java :

public byte[] getpic(int id){
Cursor cu = mydb.rawQuery("select * from content where ID="+ id,null);
cu.moveToFirst();
byte s[]= cu.getBlob(cu.getColumnIndex("IMAGE"));
return s;
}
in main.java

private void load(String sea, String Name, int page3){

db.open();

byte[] p = db.getpic(page3);
Bitmap bm = BitmapFactory.decodeByteArray(p,0, p.length);
img.setImageBitmap(bm);

db.close();

}
what should i do???

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problem with blob