Send and Receive FloatingActionButtons hide when scrolling down on the TransactionsFragment

app/src/main/java/cy/agorise/crystalwallet/activities/BoardActivity.java

@@ -1,7 +1,6 @@
 package cy.agorise.crystalwallet.activities;
 
 import android.app.ActivityOptions;
-import android.arch.lifecycle.LiveData;
 import android.arch.lifecycle.ViewModelProviders;
 import android.content.Intent;
 import android.content.res.Resources;
@@ -23,9 +22,6 @@ import android.view.View;
 import android.view.animation.LinearInterpolator;
 import android.widget.ImageView;
 
-import java.util.List;
-
-import butterknife.BindColor;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 import butterknife.OnClick;
@@ -36,7 +32,6 @@ import cy.agorise.crystalwallet.fragments.ReceiveTransactionFragment;
 import cy.agorise.crystalwallet.fragments.SendTransactionFragment;
 import cy.agorise.crystalwallet.fragments.TransactionsFragment;
 import de.hdodenhof.circleimageview.CircleImageView;
-import cy.agorise.crystalwallet.models.CryptoNetBalance;
 import cy.agorise.crystalwallet.viewmodels.CryptoNetBalanceListViewModel;
 
 /**
@@ -49,9 +44,6 @@ public class BoardActivity  extends AppCompatActivity {
     @BindView(R.id.pager)
     public ViewPager mPager;
 
-    //@BindView(R.id.btnGeneralSettings)
-    //public ImageButton btnGeneralSettings;
-
     @BindView(R.id.fabSend)
     public FloatingActionButton fabSend;
 
@@ -182,7 +174,7 @@ public class BoardActivity  extends AppCompatActivity {
         });
     }
 
-    /*
+    /**
      * dispatch the user to the accounts fragment
      */
     @OnClick(R.id.toolbar_user_img)
@@ -221,7 +213,7 @@ public class BoardActivity  extends AppCompatActivity {
         }
         ft.addToBackStack(null);
 
-        long receiveCryptoNetAccountId = -1;
+        long receiveCryptoNetAccountId;
         if (this.cryptoNetAccountId != -1){
             receiveCryptoNetAccountId = this.cryptoNetAccountId;
         } else {
@@ -245,7 +237,7 @@ public class BoardActivity  extends AppCompatActivity {
         }
         ft.addToBackStack(null);
 
-        long sendCryptoNetAccountId = -1;
+        long sendCryptoNetAccountId;
         if (this.cryptoNetAccountId != -1){
             sendCryptoNetAccountId = this.cryptoNetAccountId;
         } else {

app/src/main/java/cy/agorise/crystalwallet/fragments/TransactionsFragment.java

@@ -6,7 +6,9 @@ import android.arch.lifecycle.ViewModelProviders;
 import android.arch.paging.PagedList;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
+import android.support.design.widget.FloatingActionButton;
 import android.support.v4.app.Fragment;
+import android.support.v7.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -25,6 +27,10 @@ public class TransactionsFragment extends Fragment {
     @BindView(R.id.vTransactionListView)
     TransactionListView transactionListView;
 
+    RecyclerView balanceRecyclerView;
+    FloatingActionButton fabSend;
+    FloatingActionButton fabReceive;
+
     public TransactionsFragment() {
         // Required empty public constructor
     }
@@ -45,8 +51,37 @@ public class TransactionsFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
         // Inflate the layout for this fragment
-        View v = inflater.inflate(R.layout.fragment_transactions, container, false);
-        ButterKnife.bind(this, v);
+        View view = inflater.inflate(R.layout.fragment_transactions, container, false);
+        ButterKnife.bind(this, view);
+
+        // Gets the Balance RecyclerView
+        balanceRecyclerView = view.findViewById(R.id.transactionListView);
+        fabSend = getActivity().findViewById(R.id.fabSend);
+        fabReceive = getActivity().findViewById(R.id.fabReceive);
+
+        // TODO move this listener to the activity, to make this fragment reusable
+        // Adds listener to the RecyclerView to show and hide buttons at the bottom of the screen
+        balanceRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+            @Override
+            public void onScrolled(RecyclerView recyclerView, int dx,int dy){
+                super.onScrolled(recyclerView, dx, dy);
+
+                // Scroll Down
+                if( dy >0 ) {
+                    if( fabSend.isShown() )
+                        fabSend.hide();
+                    if( fabReceive.isShown() )
+                        fabReceive.hide();
+                }
+                // Scroll Up
+                else if( dy <0 ) {
+                    if( !fabSend.isShown() )
+                        fabSend.show();
+                    if( !fabReceive.isShown() )
+                        fabReceive.show();
+                }
+            }
+        });
 
         TransactionListViewModel transactionListViewModel = ViewModelProviders.of(this).get(TransactionListViewModel.class);
         LiveData<PagedList<CryptoCoinTransaction>> transactionsLiveData = transactionListViewModel.getTransactionList();
@@ -59,6 +94,6 @@ public class TransactionsFragment extends Fragment {
             }
         });
 
-        return v;
+        return view;
     }
 }

app/src/main/java/cy/agorise/crystalwallet/views/TransactionListView.java

@@ -85,7 +85,7 @@ public class TransactionListView extends RelativeLayout {
         final LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this.getContext());
         this.listView.setLayoutManager(linearLayoutManager);
         //Prevents the list to start again when scrolling to the end
-        this.listView.setNestedScrollingEnabled(false);
+        // this.listView.setNestedScrollingEnabled(false);
 
 
         /*this.listView.addOnScrollListener(new RecyclerView.OnScrollListener() {

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

@@ -162,7 +162,7 @@
         android:layout_height="wrap_content"
         android:layout_gravity="end|bottom"
         android:layout_margin="@dimen/fab_margin"
-        app:backgroundTint="@color/colorPrimaryDark"
+        app:backgroundTint="@color/colorPrimary"
         app:srcCompat="@drawable/ic_person_add" />
 
 </android.support.design.widget.CoordinatorLayout>

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

@@ -1,25 +1,12 @@
-<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context="cy.agorise.crystalwallet.fragments.TransactionsFragment">
 
-    <RelativeLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content">
-
-        <!--<TextView
-            android:id="@+id/tvTransactionSearch"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android: />
-<Spinner
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"></Spinner>
--->
     <cy.agorise.crystalwallet.views.TransactionListView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:id="@+id/vTransactionListView" />
-    </RelativeLayout>
-</android.support.v4.widget.NestedScrollView>
+
+</FrameLayout>