INTENT - BUNDLE TRUYEN DU LIEU

- Main.java :

Intent intent = new Intent(getApplicationContext(),DanhSachSanPhamTrongDanhMuc.class);
Bundle bd = new Bundle() ;
bd.putString("idDanhMuc",mangDanhMuc.get(position).id);
intent.putExtras(bd);
startActivity(intent);

- DanhSachSanPhamTrongDanhMuc.java : 

Bundle bd = this.getIntent().getExtras();

if(bd !=null)
{

    idDanhMuc = bd.getString("idDanhMuc");

}