public void btnAddToCartClick(View view) {
    Log.i("StoreMainActivity - btnAddToCartClick", "Start");
    try {
      TransactionDetailInfo transaction = StoreMainActivity.productTransactionDetailInfo;
      if (transaction == null
          || (transaction.getCategoryId() < 5 && transaction.getSizeType() == null)) {
        Toast.makeText(this, "Xin vui lòng chọn size sản phẩm", Toast.LENGTH_SHORT).show();
        return;
      }

      TransactionDetailDB db = new TransactionDetailDB(this);
      ArrayList<TransactionDetailInfo> transactions = db.getTransactions();
      for (TransactionDetailInfo transactionDetailInfo : transactions) {
        if (transaction.getProductId().equals(transactionDetailInfo.getProductId())) {
          Toast.makeText(
                  this,
                  "Sản phẩm này đã có trong giỏ hàng.\nVui lòng xem giỏ hàng để biết chi tiết.",
                  Toast.LENGTH_SHORT)
              .show();
          return;
        }
      }

      StoreMainActivity.productTransactionDetailInfo.setAddedDate(Calendar.getInstance().getTime());
      db.insert(StoreMainActivity.productTransactionDetailInfo);
      Toast.makeText(this, "Đã thêm vào giỏ hàng", Toast.LENGTH_SHORT).show();
      this.updateStoreCart();
      this.storeProduct.setVisibility(FrameLayout.VISIBLE);
      this.storeProductDetail.setVisibility(FrameLayout.GONE);
      StoreMainActivity.productTransactionDetailInfo = null;

    } catch (Exception e) {
      Log.e("StoreMainActivity - btnAddToCartClick", "StoreMainActivity - btnAddToCartClick", e);
    }
  }
 private void updateStoreCart() {
   tvStoreCart = (TextView) findViewById(R.id.tvStoreCart);
   TransactionDetailDB db = new TransactionDetailDB(this);
   ArrayList<TransactionDetailInfo> listTransactionDetail = new ArrayList<TransactionDetailInfo>();
   try {
     listTransactionDetail = db.getTransactions();
   } catch (ParseException e) {
     Log.e("StoreMainActivity - updateStoreCart", e.getMessage());
   }
   if (tvStoreCart != null) {
     tvStoreCart.setText(listTransactionDetail.size() + "");
   }
 }
 public void btnStoreCartClick(View view) {
   TransactionDetailDB db = new TransactionDetailDB(this);
   try {
     if (db.getTransactions().size() > 0) {
       Intent intent = new Intent(this, PreviewCartActivity.class);
       startActivity(intent);
     } else {
       Toast.makeText(this, "Không có sản phẩm trong giỏ hàng", Toast.LENGTH_SHORT).show();
     }
   } catch (ParseException e) {
     Log.e("StoreMainActivity - btnStoreCartClick", e.getMessage());
   }
 }