add error if not found

app/src/main/java/com/yono/messeripos/CartActivity.java

@@ -18,6 +18,7 @@ import android.widget.Toast;
 
 import androidx.annotation.RequiresApi;
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.cardview.widget.CardView;
 import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.recyclerview.widget.DividerItemDecoration;
@@ -62,15 +63,29 @@ public class CartActivity extends AppCompatActivity {
     public static MaterialTextView grandToral;
     Utils utils = new Utils();
     MaterialButton btnSaveCart;
+    Button btnCheckout;
+    CardView cardView;
 
     @RequiresApi(api = Build.VERSION_CODES.N)
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_cart);
-        Button btnCheckout;
+
         grandToral = findViewById(R.id.tvHarga);
         btnSaveCart = findViewById(R.id.btSave);
+        cartEmptyImage = findViewById(R.id.cartEmpty);
+        cartEmptyText = findViewById(R.id.cartEmptyText);
+        recyclerView = findViewById(R.id.rvCart);
+        btnCheckout = findViewById(R.id.btCheckout);
+        cardView = findViewById(R.id.cardviews);
+
+        // set visibility gone for cartEmpty
+        cartEmptyImage.bringToFront();
+        cartEmptyText.bringToFront();
+        cartEmptyImage.setVisibility(View.GONE);
+        cartEmptyText.setVisibility(View.GONE);
+
 
         modelsCart = new ViewModelProvider(this).get(MainViewModelsCart.class);
 
@@ -84,11 +99,13 @@ public class CartActivity extends AppCompatActivity {
         Log.i("Id Order on acart", "onCreate: "+orderId);
         if (orderId.isEmpty()){
             SharedPreferences.Editor editor = sharedPreferences.edit();
-            editor.putString(ORDER_ID, "MES-ORDER"+utils.timeStamp());
+            editor.putString(ORDER_ID, "MES-ORDER"+orderId);
+
             if (editor.commit()){
                 Toast.makeText(CartActivity.this, orderId, Toast.LENGTH_LONG).show();
             }
         }
+
         // Toolbars
         MaterialToolbar toolbars = findViewById(R.id.cAppBar);
         setSupportActionBar(toolbars);
@@ -97,14 +114,6 @@ public class CartActivity extends AppCompatActivity {
         getSupportActionBar().setTitle("Cart");
         toolbars.setNavigationOnClickListener(view -> onBackPressed());
 
-        recyclerView = findViewById(R.id.rvCart);
-        btnCheckout = findViewById(R.id.btCheckout);
-        cartEmptyImage = findViewById(R.id.cartEmpty);
-        cartEmptyText = findViewById(R.id.cartEmptyText);
-
-        // set visibility gone for cartEmpty
-        cartEmptyImage.setVisibility(View.GONE);
-        cartEmptyText.setVisibility(View.GONE);
 
         cartAdapter = new CartAdapter();
         LinearLayoutManager llm = new LinearLayoutManager(this);
@@ -115,13 +124,19 @@ public class CartActivity extends AppCompatActivity {
 
         modelsCart = new ViewModelProvider(this).get(MainViewModelsCart.class);
 
+//        show to cart
         modelsCart.getCartById(orderId).observe(this, new Observer<List<ProductCartModels>>() {
             @Override
             public void onChanged(List<ProductCartModels> productCartModels) {
-                if (productCartModels != null) {
+                if (!productCartModels.isEmpty()) {
                     dataCart = productCartModels;
                     cartAdapter.setCartAdapter(CartActivity.this, productCartModels);
                     recyclerView.setAdapter(cartAdapter);
+                }else {
+                    cartEmptyText.setVisibility(View.VISIBLE);
+                    cartEmptyImage.setVisibility(View.VISIBLE);
+                    cardView.setVisibility(View.GONE);
+                    recyclerView.setVisibility(View.GONE);
                 }
             }
         });

app/src/main/java/com/yono/messeripos/MainActivity.java

@@ -29,6 +29,7 @@ import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.LinearLayoutManager;
 
 import com.google.android.material.appbar.MaterialToolbar;
+import com.google.android.material.snackbar.Snackbar;
 import com.google.gson.Gson;
 import com.yono.messeripos.adapter.CategoryAdapter;
 import com.yono.messeripos.adapter.ProductAdapter;
@@ -70,6 +71,7 @@ public class MainActivity extends AppCompatActivity {
     public static ArrayList<ProductModels> productModelsArrayList = new ArrayList<>();
     public static final String DATA_PRODUCT = "DATA_PRODUCT";
     ProgressDialog progressDialog;
+    public static Boolean cartOpen;
 
     @SuppressLint("LongLogTag")
     @Override
@@ -239,6 +241,10 @@ public class MainActivity extends AppCompatActivity {
                         binding.rvProduct.setAdapter(productAdapter);
                     }
 
+                } else {
+                    showLoading(false);
+                    binding.imgEmpty.setVisibility(View.VISIBLE);
+                    binding.imgEmpty.bringToFront();
                 }
             }
         });
@@ -287,10 +293,10 @@ public class MainActivity extends AppCompatActivity {
                                     0
                             ));
 
-                            Log.d("order_id_create", "onChanged: "+orderId);
+//                            Log.d("order_id_create", "onChanged: "+orderId);
 
                             cartIsEmpty = false;
-                            Log.i("Add data cart", "onChanged: Berhasil ditambahkan");
+//                            Log.i("Add data cart", "onChanged: Berhasil ditambahkan");
                         }else {
                             if (cartIsEmpty){
                                 startActivity(new Intent(MainActivity.this, CartActivity.class));
@@ -301,6 +307,11 @@ public class MainActivity extends AppCompatActivity {
                     }
                 });
             }
+
+            @Override
+            public void redirect() {
+                startActivity(new Intent(MainActivity.this, CartActivity.class));
+            }
         });
     }
 

app/src/main/java/com/yono/messeripos/adapter/ProductAdapter.java

@@ -8,6 +8,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Filter;
 import android.widget.Filterable;
+import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.databinding.DataBindingUtil;
@@ -15,6 +16,7 @@ import androidx.fragment.app.FragmentActivity;
 import androidx.lifecycle.ViewModelProviders;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.google.android.material.snackbar.Snackbar;
 import com.yono.messeripos.MainActivity;
 import com.yono.messeripos.R;
 import com.yono.messeripos.databinding.ItemListBinding;
@@ -36,6 +38,8 @@ public class ProductAdapter extends RecyclerView.Adapter<ProductAdapter.MyViewHo
         void onDelete(ProductModels product, int position);
 
         void onAddCart(ProductModels product);
+
+        void redirect();
     }
 
     private ProductListener listener;
@@ -147,6 +151,14 @@ public class ProductAdapter extends RecyclerView.Adapter<ProductAdapter.MyViewHo
                 public void onClick(View view) {
                     listener.onAddCart(products);
                     MainActivity.cartIsEmpty = true;
+                    Snackbar.make(view, products.getProductName()+" berhasil ditambahkan", Snackbar.LENGTH_SHORT)
+                            .setAction(R.string.open_cart, new View.OnClickListener() {
+                                @Override
+                                public void onClick(View view) {
+                                    listener.redirect();
+                                }
+                            })
+                            .show();
                 }
             });
 

app/src/main/res/layout/activity_cart.xml

@@ -33,14 +33,14 @@
         android:id="@+id/rvCart"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:layout_above="@id/cardview"
+        android:layout_above="@id/cardviews"
         android:layout_below="@id/cAppBar"
         android:overScrollMode="never"
         app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
         tools:listitem="@layout/item_cart" />
 
     <com.google.android.material.card.MaterialCardView
-        android:id="@+id/cardview"
+        android:id="@+id/cardviews"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         app:cardElevation="0dp"

app/src/main/res/values/strings.xml

@@ -26,6 +26,7 @@
     <string name="title_success">Success</string>
     <string name="hint_pay">cash</string>
     <string name="title_next">next</string>
+    <string name="open_cart">Open Cart</string>
 
     <string-array name="planets_array">
         <item>Mercury</item>