Implemented displaying how many transactions currently are displayed and the balance of displayed transactions

ui/BankingAndroidApp/src/main/java/net/dankito/banking/ui/android/adapter/AccountTransactionAdapter.kt

@@ -5,12 +5,11 @@ import android.view.ContextMenu
 import android.view.View
 import net.dankito.banking.ui.android.R
 import net.dankito.banking.ui.android.adapter.viewholder.AccountTransactionViewHolder
+import net.dankito.banking.ui.android.extensions.showAmount
 import net.dankito.banking.ui.model.AccountTransaction
 import net.dankito.banking.ui.presenter.BankingPresenter
 import net.dankito.utils.android.extensions.asActivity
-import net.dankito.utils.android.extensions.setTextColorToColorResource
 import net.dankito.utils.android.ui.adapter.ListRecyclerAdapter
-import java.math.BigDecimal
 import java.text.DateFormat
 
 
@@ -43,8 +42,7 @@ open class AccountTransactionAdapter(protected val presenter: BankingPresenter)
 
         viewHolder.txtvwUsage.text = item.usage
 
-        viewHolder.txtvwAmount.text = presenter.formatAmount(item.amount)
+        viewHolder.txtvwAmount.showAmount(presenter, item.amount)
-        viewHolder.txtvwAmount.setTextColorToColorResource(if (item.amount >= BigDecimal.ZERO) R.color.positiveAmount else R.color.negativeAmount)
 
         val iconUrl = item.bankAccount.customer.iconUrl
         if (iconUrl != null && presenter.areAllAccountSelected) {

ui/BankingAndroidApp/src/main/java/net/dankito/banking/ui/android/extensions/TextViewExtensions.kt

@@ -0,0 +1,17 @@
+package net.dankito.banking.ui.android.extensions
+
+import android.widget.TextView
+import net.dankito.banking.ui.android.R
+import net.dankito.banking.ui.presenter.BankingPresenter
+import net.dankito.utils.android.extensions.setTextColorToColorResource
+import net.dankito.utils.multiplatform.BigDecimal
+
+
+fun TextView.showAmount(presenter: BankingPresenter, amount: BigDecimal) {
+    text = presenter.formatAmount(amount)
+    setTextColorForAmount(amount)
+}
+
+fun TextView.setTextColorForAmount(amount: BigDecimal) {
+    setTextColorToColorResource(if (amount >= java.math.BigDecimal.ZERO) R.color.positiveAmount else R.color.negativeAmount)
+}

ui/BankingAndroidApp/src/main/java/net/dankito/banking/ui/android/home/HomeFragment.kt

@@ -13,13 +13,16 @@ import androidx.lifecycle.ViewModelProviders
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import kotlinx.android.synthetic.main.fragment_home.*
 import net.dankito.banking.ui.android.R
 import net.dankito.banking.ui.android.di.BankingComponent
 import net.dankito.banking.ui.android.adapter.AccountTransactionAdapter
+import net.dankito.banking.ui.android.extensions.showAmount
 import net.dankito.banking.ui.model.parameters.TransferMoneyData
 import net.dankito.banking.ui.model.responses.GetTransactionsResponse
 import net.dankito.banking.ui.presenter.BankingPresenter
 import net.dankito.utils.android.extensions.asActivity
+import net.dankito.utils.multiplatform.sum
 import javax.inject.Inject
 
 
@@ -211,6 +214,14 @@ class HomeFragment : Fragment() {
         // TODO: if transactions are filtered calculate and show balance of displayed transactions?
         mnitmBalance.title = presenter.formatAmount(presenter.balanceOfSelectedBankAccounts)
         mnitmBalance.isVisible = presenter.doSelectedBankAccountsSupportRetrievingBalance
+
+        lytTransactionsSummary.visibility = if (presenter.doSelectedBankAccountsSupportRetrievingBalance) View.VISIBLE else View.GONE
+
+        txtCountTransactions.text = context?.getString(R.string.fragment_home_count_transactions, transactionAdapter.items.size)
+
+        val sumOfDisplayedTransactions = if (appliedTransactionsFilter.isBlank()) presenter.balanceOfSelectedBankAccounts
+                                            else transactionAdapter.items.map { it.amount }.sum()
+        txtTransactionsBalance.showAmount(presenter, sumOfDisplayedTransactions)
     }
 
 }

ui/BankingAndroidApp/src/main/res/layout/fragment_home.xml

@@ -4,15 +4,62 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
-    <androidx.recyclerview.widget.RecyclerView
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginStart="@dimen/fragment_account_transaction_margin_start_and_end"
+        android:layout_marginEnd="@dimen/fragment_account_transaction_margin_start_and_end"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        >
+
+        <RelativeLayout
+            android:id="@+id/lytTransactionsSummary"
+            android:layout_width="match_parent"
+            android:layout_height="@dimen/fragment_account_transaction_transactions_summary_height"
+            android:layout_marginTop="4dp"
+            >
+
+            <TextView
+                android:id="@+id/txtCountTransactions"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:layout_alignParentTop="true"
+                android:layout_alignParentLeft="true"
+                android:layout_alignParentStart="true"
+                android:layout_alignParentBottom="true"
+                android:gravity="center_vertical"
+                android:textAlignment="gravity"
+                />
+
+            <TextView
+                android:id="@+id/txtTransactionsBalance"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:layout_alignParentTop="true"
+                android:layout_alignParentRight="true"
+                android:layout_alignParentEnd="true"
+                android:layout_alignParentBottom="true"
+                android:gravity="center_vertical"
+                android:textAlignment="gravity"
+                />
+
+        </RelativeLayout>
+
+        <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/rcyvwAccountTransactions"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_marginStart="@dimen/fragment_account_transaction_margin_start_and_end"
+            android:layout_below="@+id/lytTransactionsSummary"
-            android:layout_marginEnd="@dimen/fragment_account_transaction_margin_start_and_end"
+            android:layout_alignParentLeft="true"
-            app:layout_constraintEnd_toEndOf="parent"
+            android:layout_alignParentStart="true"
-            app:layout_constraintStart_toStartOf="parent"
+            android:layout_alignParentRight="true"
-            app:layout_constraintTop_toTopOf="parent"
+            android:layout_alignParentEnd="true"
+            android:layout_alignParentBottom="true"
+            app:layout_behavior="@string/appbar_scrolling_view_behavior"
             />
 
+    </RelativeLayout>
+
 </androidx.constraintlayout.widget.ConstraintLayout>

ui/BankingAndroidApp/src/main/res/values-de/strings.xml

@@ -29,6 +29,7 @@
 
     <string name="menu_main_update_transactions">Umsätze aktualisieren</string>
 
+    <string name="fragment_home_count_transactions">%d Umsätze</string>
     <string name="fragment_home_could_not_retrieve_account_transactions">Kontoumsätze für \'%1$s\' konnten nicht empfangen werden.\n\nFehlermeldung Ihrer Bank:\n\n%2$s</string>
     <string name="fragment_home_transfer_money_to">Neue Überweisung an %s</string>
     <string name="fragment_home_transfer_money_with_same_data">Neue Überweisung mit gleichen Daten</string>

ui/BankingAndroidApp/src/main/res/values/dimens.xml

@@ -15,6 +15,7 @@
     <dimen name="fab_margin_bottom_with_toolbar">42dp</dimen>
 
     <dimen name="fragment_account_transaction_margin_start_and_end">4dp</dimen>
+    <dimen name="fragment_account_transaction_transactions_summary_height">24dp</dimen>
 
     <dimen name="list_item_account_transaction_height">74dp</dimen>
     <dimen name="list_item_account_transaction_padding">0dp</dimen>

ui/BankingAndroidApp/src/main/res/values/strings.xml

@@ -29,6 +29,7 @@
 
     <string name="menu_main_update_transactions">Update transactions</string>
 
+    <string name="fragment_home_count_transactions">%d transactions</string>
     <string name="fragment_home_could_not_retrieve_account_transactions">Could not retrieve account transactions for \'%1$s\'.\n\nError message from your bank:\n\n%2$s</string>
     <string name="fragment_home_transfer_money_to">Transfer money to %s</string>
     <string name="fragment_home_transfer_money_with_same_data">New transfer with same data</string>