fixed product supplier android

android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/ProductSupplierDetailFragment.java

@@ -114,9 +114,18 @@ public class ProductSupplierDetailFragment extends Fragment {
             viewModel.setEditMode(productId, supplierId);
             preselectedProductId = productId;
             preselectedSupplierId = supplierId;
-            
+
             binding.tvPSMode.setText("Edit Product Supplier");
             binding.btnDeletePS.setVisibility(View.VISIBLE);
+
+            viewModel.loadProductSupplier().observe(getViewLifecycleOwner(), resource -> {
+                if (resource == null) return;
+                if (resource.status == Resource.Status.SUCCESS && resource.data != null) {
+                    if (resource.data.getCost() != null) {
+                        binding.etPSCost.setText(resource.data.getCost().toPlainString());
+                    }
+                }
+            });
         } else {
             binding.tvPSMode.setText("Add Product Supplier");
             binding.btnDeletePS.setVisibility(View.GONE);

android/app/src/main/java/com/example/petstoremobile/viewmodels/ProductSupplierDetailViewModel.java

@@ -46,6 +46,10 @@ public class ProductSupplierDetailViewModel extends ViewModel {
         this.editSupplierId = supplierId;
     }
 
+    public LiveData<Resource<ProductSupplierDTO>> loadProductSupplier() {
+        return psRepository.getProductSupplierById(editProductId, editSupplierId);
+    }
+
     public boolean isEditing() { return isEditing; }
     public long getEditProductId() { return editProductId; }
     public long getEditSupplierId() { return editSupplierId; }