diff --git a/library/src/main/java/eu/inloop/viewmodel/IViewModelFactory.java b/library/src/main/java/eu/inloop/viewmodel/IViewModelFactory.java
new file mode 100644
index 0000000..9cec88d
--- /dev/null
+++ b/library/src/main/java/eu/inloop/viewmodel/IViewModelFactory.java
@@ -0,0 +1,9 @@
+package eu.inloop.viewmodel;
+
+import android.support.annotation.Nullable;
+
+public interface IViewModelFactory <T extends IView, R extends AbstractViewModel<T>> {
+
+    @Nullable
+    R createViewModel();
+}
\ No newline at end of file
diff --git a/library/src/main/java/eu/inloop/viewmodel/ViewModelHelper.java b/library/src/main/java/eu/inloop/viewmodel/ViewModelHelper.java
index 48b9844..9d1ed3b 100644
--- a/library/src/main/java/eu/inloop/viewmodel/ViewModelHelper.java
+++ b/library/src/main/java/eu/inloop/viewmodel/ViewModelHelper.java
@@ -39,16 +39,16 @@ public class ViewModelHelper<T extends IView, R extends AbstractViewModel<T>> {
      * @param activity           parent activity
      * @param savedInstanceState savedInstance state from {@link Activity#onCreate(Bundle)} or
      *                           {@link Fragment#onCreate(Bundle)}
-     * @param viewModelClass     the {@link Class} of your ViewModel
+     * @param viewModelFactory   the {@link Class} of your ViewModel
      * @param arguments          pass {@link Fragment#getArguments()}  or
      *                           {@link Activity#getIntent()}.{@link Intent#getExtras() getExtras()}
      */
     public void onCreate(@NonNull Activity activity,
                          @Nullable Bundle savedInstanceState,
-                         @Nullable Class<? extends AbstractViewModel<T>> viewModelClass,
+                         @Nullable IViewModelFactory<T, R> viewModelFactory,
                          @Nullable Bundle arguments) {
         // no viewmodel for this fragment
-        if (viewModelClass == null) {
+        if (viewModelFactory == null) {
             mViewModel = null;
             return;
         }
@@ -72,7 +72,7 @@ public void onCreate(@NonNull Activity activity,
             throw new IllegalStateException("ViewModelProvider for activity " + activity + " was null."); //NON-NLS
         }
 
-        final ViewModelProvider.ViewModelWrapper<T> viewModelWrapper = viewModelProvider.getViewModel(mScreenId, viewModelClass);
+        final ViewModelProvider.ViewModelWrapper<T> viewModelWrapper = viewModelProvider.getViewModel(mScreenId, viewModelFactory);
         //noinspection unchecked
         mViewModel = (R) viewModelWrapper.viewModel;
 
diff --git a/library/src/main/java/eu/inloop/viewmodel/ViewModelProvider.java b/library/src/main/java/eu/inloop/viewmodel/ViewModelProvider.java
index c541de4..644ab3c 100644
--- a/library/src/main/java/eu/inloop/viewmodel/ViewModelProvider.java
+++ b/library/src/main/java/eu/inloop/viewmodel/ViewModelProvider.java
@@ -52,17 +52,13 @@ public synchronized void removeAllViewModels() {
     @SuppressWarnings("unchecked")
     @NonNull
     public synchronized <T extends IView> ViewModelWrapper<T> getViewModel(@NonNull final String modelIdentifier,
-                                                                           @NonNull final Class<? extends AbstractViewModel<T>> viewModelClass) {
+                                                                           @NonNull final IViewModelFactory<T, ? extends AbstractViewModel<T>> viewModelFactory) {
         AbstractViewModel<T> instance = (AbstractViewModel<T>) mViewModelCache.get(modelIdentifier);
         if (instance != null) {
             return new ViewModelWrapper<>(instance, false);
         }
 
-        try {
-            instance = viewModelClass.newInstance();
-        } catch (final Exception ex) {
-            throw new RuntimeException(ex);
-        }
+        instance = viewModelFactory.createViewModel();
         instance.setUniqueIdentifier(modelIdentifier);
         mViewModelCache.put(modelIdentifier, instance);
         return new ViewModelWrapper<>(instance, true);
diff --git a/library/src/main/java/eu/inloop/viewmodel/base/ViewModelBaseActivity.java b/library/src/main/java/eu/inloop/viewmodel/base/ViewModelBaseActivity.java
index 2a7dc47..d1e6457 100644
--- a/library/src/main/java/eu/inloop/viewmodel/base/ViewModelBaseActivity.java
+++ b/library/src/main/java/eu/inloop/viewmodel/base/ViewModelBaseActivity.java
@@ -7,11 +7,12 @@
 
 import eu.inloop.viewmodel.AbstractViewModel;
 import eu.inloop.viewmodel.IView;
+import eu.inloop.viewmodel.IViewModelFactory;
 import eu.inloop.viewmodel.ProxyViewHelper;
 import eu.inloop.viewmodel.ViewModelHelper;
 import eu.inloop.viewmodel.binding.ViewModelBindingConfig;
 
-public abstract class ViewModelBaseActivity<T extends IView, R extends AbstractViewModel<T>> extends ViewModelBaseEmptyActivity implements IView  {
+public abstract class ViewModelBaseActivity<T extends IView, R extends AbstractViewModel<T>> extends ViewModelBaseEmptyActivity implements IView {
 
     @NonNull
     private final ViewModelHelper<T, R> mViewModeHelper = new ViewModelHelper<>();
@@ -20,14 +21,29 @@ public abstract class ViewModelBaseActivity<T extends IView, R extends AbstractV
     @Override
     protected void onCreate(@Nullable final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        
-        Class<? extends AbstractViewModel<T>> viewModelClass = getViewModelClass();
+
+        IViewModelFactory<T, R> viewModelFactory = getViewModelFactory();
         // try to extract the ViewModel class from the implementation
-        if (viewModelClass == null) {
+        if (viewModelFactory == null) {
             //noinspection unchecked
-            viewModelClass = (Class<? extends AbstractViewModel<T>>) ProxyViewHelper.getGenericType(getClass(), AbstractViewModel.class);
+            final Class<? extends AbstractViewModel<T>> viewModelClass = (Class<? extends AbstractViewModel<T>>) ProxyViewHelper.getGenericType(getClass(), AbstractViewModel.class);
+            if (viewModelClass != null) {
+                viewModelFactory = new  IViewModelFactory<T, R>() {
+                    @Nullable
+                    @Override
+                    public R createViewModel() {
+                        try {
+                            return (R) viewModelClass.newInstance();
+                        } catch (InstantiationException e) {
+                            throw new RuntimeException(e);
+                        } catch (IllegalAccessException e) {
+                            throw new RuntimeException(e);
+                        }
+                    }
+                };
+            }
         }
-        mViewModeHelper.onCreate(this, savedInstanceState, viewModelClass, getIntent().getExtras());
+        mViewModeHelper.onCreate(this, savedInstanceState, viewModelFactory, getIntent().getExtras());
     }
 
     /**
@@ -40,7 +56,7 @@ public void setModelView(@NonNull final T view) {
     }
 
     @Nullable
-    public Class<R> getViewModelClass() {
+    public  IViewModelFactory<T, R> getViewModelFactory() {
         return null;
     }
 
diff --git a/library/src/main/java/eu/inloop/viewmodel/base/ViewModelBaseFragment.java b/library/src/main/java/eu/inloop/viewmodel/base/ViewModelBaseFragment.java
index d198615..9826161 100644
--- a/library/src/main/java/eu/inloop/viewmodel/base/ViewModelBaseFragment.java
+++ b/library/src/main/java/eu/inloop/viewmodel/base/ViewModelBaseFragment.java
@@ -9,6 +9,7 @@
 
 import eu.inloop.viewmodel.AbstractViewModel;
 import eu.inloop.viewmodel.IView;
+import eu.inloop.viewmodel.IViewModelFactory;
 import eu.inloop.viewmodel.ProxyViewHelper;
 import eu.inloop.viewmodel.ViewModelHelper;
 import eu.inloop.viewmodel.binding.ViewModelBindingConfig;
@@ -23,13 +24,28 @@ public abstract class ViewModelBaseFragment<T extends IView, R extends AbstractV
     public void onCreate(@Nullable final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        Class<? extends AbstractViewModel<T>> viewModelClass = getViewModelClass();
+        IViewModelFactory<T, R> viewModelFactory = getViewModelFactory();
         // try to extract the ViewModel class from the implementation
-        if (viewModelClass == null) {
+        if (viewModelFactory == null) {
             //noinspection unchecked
-            viewModelClass = (Class<? extends AbstractViewModel<T>>) ProxyViewHelper.getGenericType(getClass(), AbstractViewModel.class);
+            final Class<? extends AbstractViewModel<T>> viewModelClass = (Class<? extends AbstractViewModel<T>>) ProxyViewHelper.getGenericType(getClass(), AbstractViewModel.class);
+            if (viewModelClass != null) {
+                viewModelFactory = new  IViewModelFactory<T, R>() {
+                    @Nullable
+                    @Override
+                    public R createViewModel() {
+                        try {
+                            return (R) viewModelClass.newInstance();
+                        } catch (java.lang.InstantiationException e) {
+                            throw new RuntimeException(e);
+                        } catch (IllegalAccessException e) {
+                            throw new RuntimeException(e);
+                        }
+                    }
+                };
+            }
         }
-        getViewModelHelper().onCreate(getActivity(), savedInstanceState, viewModelClass, getArguments());
+        getViewModelHelper().onCreate(getActivity(), savedInstanceState, viewModelFactory, getArguments());
     }
 
     @CallSuper
@@ -68,7 +84,7 @@ public void onDestroy() {
     }
 
     @Nullable
-    public Class<R> getViewModelClass() {
+    public IViewModelFactory<T, R> getViewModelFactory() {
         return null;
     }
 
diff --git a/sample/src/main/java/eu/inloop/viewmodel/sample/fragment/UserListFragment.java b/sample/src/main/java/eu/inloop/viewmodel/sample/fragment/UserListFragment.java
index 39a6055..ed6e321 100644
--- a/sample/src/main/java/eu/inloop/viewmodel/sample/fragment/UserListFragment.java
+++ b/sample/src/main/java/eu/inloop/viewmodel/sample/fragment/UserListFragment.java
@@ -19,6 +19,7 @@
 
 import butterknife.ButterKnife;
 import butterknife.InjectView;
+import eu.inloop.viewmodel.IViewModelFactory;
 import eu.inloop.viewmodel.base.ViewModelBaseFragment;
 import eu.inloop.viewmodel.binding.ViewModelBindingConfig;
 import eu.inloop.viewmodel.sample.R;
@@ -47,6 +48,18 @@ public void onCreate(Bundle savedInstanceState) {
         mAdapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_list_item_1, android.R.id.text1, new ArrayList<String>());
     }
 
+    @Nullable
+    @Override
+    public IViewModelFactory<IUserListView, UserListViewModel> getViewModelFactory() {
+        return new  IViewModelFactory<IUserListView, UserListViewModel>() {
+            @Nullable
+            @Override
+            public UserListViewModel createViewModel() {
+                return new UserListViewModel();
+            }
+        };
+    }
+
     @Override
     public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
         final View view = inflater.inflate(R.layout.fragment_userlist, container, false);