Add to cart

app/src/main/AndroidManifest.xml

@@ -9,12 +9,14 @@
  android:roundIcon="@mipmap/ic_launcher_round"
  android:supportsRtl="true"
  android:theme="@style/AppTheme">
- <activity android:name=".MainLandingPage">
+ <activity android:name=".MainLandingPage"
+ android:screenOrientation="portrait" >
  <intent-filter>
  <action android:name="android.intent.action.MAIN" />
 
  <category android:name="android.intent.category.LAUNCHER" />
  </intent-filter>
+
  </activity>
  </application>
 

app/src/main/java/com/aggarwalcode/onlinestore/ecomexampleb/AddToCart.java

@@ -81,6 +81,7 @@ public void onCreate(Bundle savedInstanceState) {
  mParam1 = getArguments().getString(ARG_PARAM1);
  mParam2 = getArguments().getString(ARG_PARAM2);
  }
+ setHasOptionsMenu(true);
  }
 
  @Override
@@ -96,12 +97,13 @@ public View onCreateView(LayoutInflater inflater, ViewGroup container,
  public void onClick(View v) {//!(Arrays.asList(FragmentCart.prodBuyArray).contains(mParam1))
  if(!(Arrays.asList(fragmentCart.prodBuyArray).contains(mParam1)))
  FragmentCart.keysAddedToCart.add(mParam1);
+ MainLandingPage.mCartItemCount = FragmentCart.keysAddedToCart.size();
+ getActivity().invalidateOptionsMenu();
  FragmentCart frg = new FragmentCart();
  final FragmentTransaction ft = getFragmentManager().beginTransaction();
  ft.detach(frg);
  ft.attach(frg);
  ft.commit();
- return;
  }
  });
 

app/src/main/java/com/aggarwalcode/onlinestore/ecomexampleb/MainLandingPage.java

@@ -38,6 +38,10 @@ public class MainLandingPage extends AppCompatActivity
  AddToCart.OnFragmentInteractionListener,
  FragmentCart.OnFragmentInteractionListener {
 
+ MainLandingPage(){
+ //Empty Constructor
+ }
+
  public static final String TAG = "EcomLanding";
  RecyclerView recyclerViewEcom;
  ImageAdapter mAdapter;
@@ -48,7 +52,7 @@ public class MainLandingPage extends AppCompatActivity
  ImageButton shopByCatBut;
  FragmentCart fragmentCart = FragmentCart.newInstance(null, null);
  TextView textCartItemCount;
- int mCartItemCount = 10;
+ static int mCartItemCount = 0;
  Toolbar toolbar;
 
 
@@ -131,8 +135,6 @@ public void onCancelled(DatabaseError databaseError) {
  }
  })
  );
-
- mCartItemCount = FragmentCart.keysAddedToCart.size();
  }
 
 
@@ -149,14 +151,21 @@ public void onBackPressed() {
  }
  }
 
+ @Override
+ public void onRestart(){
+ if(MainLandingPage.mCartItemCount == FragmentCart.keysAddedToCart.size() );
+ MainLandingPage.mCartItemCount = FragmentCart.keysAddedToCart.size();
+ super.onRestart();
+ }
+
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
  // Inflate the menu; this adds items to the action bar if it is present.
 
  getMenuInflater().inflate(R.menu.ecom_landing, menu);
 
  final MenuItem menuItem = menu.findItem(R.id.action_drawer_cart);
-
+ MenuItemCompat.getActionProvider(menuItem);
  View actionView = MenuItemCompat.getActionView(menuItem);
  textCartItemCount = (TextView) actionView.findViewById(R.id.cart_badge);
 
@@ -184,14 +193,14 @@ public boolean onOptionsItemSelected(MenuItem item) {
  transaction.commit();
  transaction.addToBackStack(null);
 
+
  /*int id = item.getItemId();
 
  //noinspection SimplifiableIfStatement
  if (id == R.id.action_settings) {
  return true;
  }
 */
- invalidateOptionsMenu();
  return super.onOptionsItemSelected(item);
  }
 
@@ -207,7 +216,6 @@ private void setupBadge() {
  textCartItemCount.setVisibility(View.VISIBLE);
  }
  }
- invalidateOptionsMenu();
  }
  }