- Now the Transaction History is working and is Paged

- New class to test the app: a Random Transaction Generator

app/src/androidTest/java/carbon/crypto/com/carbon/TransactionListTest.java

@@ -10,18 +10,25 @@ import android.support.test.InstrumentationRegistry;
 import android.support.test.rule.ActivityTestRule;
 import android.support.test.runner.AndroidJUnit4;
 
+import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.Date;
+import java.util.List;
 
 import carbon.crypto.com.carbon.Assertions.RecyclerViewItemsCountAssertion;
 import cy.agorise.crystalwallet.IntroActivity;
 import cy.agorise.crystalwallet.R;
 import cy.agorise.crystalwallet.dao.CrystalDatabase;
 import cy.agorise.crystalwallet.models.CryptoCoinTransaction;
+import cy.agorise.crystalwallet.randomdatagenerators.RandomTransactionsGenerator;
 
 import static android.support.test.espresso.Espresso.onView;
 import static android.support.test.espresso.matcher.ViewMatchers.withId;
 
+import java.util.Random;
+import java.util.concurrent.ThreadLocalRandom;
+
+
 /**
  * Created by Henry Varona on 19/9/2017.
  */
@@ -29,34 +36,17 @@ import static android.support.test.espresso.matcher.ViewMatchers.withId;
 public class TransactionListTest {
     CrystalDatabase db;
 
+    List<CryptoCoinTransaction> transactions;
+    int numberOfTransactions = 100;
+
     @Before
     public void addingTransactions(){
-        Calendar cal = Calendar.getInstance();
+        db = CrystalDatabase.getAppDatabase(InstrumentationRegistry.getTargetContext());
+        transactions = RandomTransactionsGenerator.generateTransactions(numberOfTransactions,1262304001,1496275201,1,999999999);
 
-        this.db = CrystalDatabase.getAppDatabase(InstrumentationRegistry.getTargetContext());
+        for(int i=0;i<transactions.size();i++) {
-        cal.set(2017,01,01,01,01,01);
+            db.transactionDao().insertTransaction(transactions.get(i));
-        CryptoCoinTransaction newTransaction = new CryptoCoinTransaction();
+        }
-        newTransaction.setAmount(1);
-        newTransaction.setFrom("friend1");
-        newTransaction.setTo("me1");
-        newTransaction.setDate(cal.getTime());
-        db.transactionDao().insertTransaction(newTransaction);
-
-        cal.set(2017,02,02,02,02,02);
-        newTransaction = new CryptoCoinTransaction();
-        newTransaction.setAmount(2);
-        newTransaction.setFrom("friend2");
-        newTransaction.setTo("me2");
-        newTransaction.setDate(cal.getTime());
-        db.transactionDao().insertTransaction(newTransaction);
-
-        cal.set(2017,03,03,03,03,03);
-        newTransaction = new CryptoCoinTransaction();
-        newTransaction.setAmount(3);
-        newTransaction.setFrom("friend3");
-        newTransaction.setTo("me3");
-        newTransaction.setDate(cal.getTime());
-        db.transactionDao().insertTransaction(newTransaction);
     }
 
     @Rule
@@ -64,7 +54,7 @@ public class TransactionListTest {
 
     @Test
     public void numberOfTransactionsInList(){
-        onView(withId(R.id.transactionListView)).check(new RecyclerViewItemsCountAssertion(3));
+        onView(withId(R.id.transactionListView)).check(new RecyclerViewItemsCountAssertion(numberOfTransactions));
     }
 
     @After

app/src/main/java/cy/agorise/crystalwallet/IntroActivity.java

@@ -16,9 +16,12 @@ import java.util.List;
 
 import cy.agorise.crystalwallet.dao.CrystalDatabase;
 import cy.agorise.crystalwallet.models.CryptoCoinTransaction;
+import cy.agorise.crystalwallet.randomdatagenerators.RandomTransactionsGenerator;
 import cy.agorise.crystalwallet.viewmodels.TransactionListViewModel;
 import cy.agorise.crystalwallet.views.TransactionListView;
 
+import static cy.agorise.crystalwallet.R.string.transactions;
+
 public class IntroActivity extends LifecycleActivity {
 
     TransactionListViewModel transactionListViewModel;
@@ -29,10 +32,18 @@ public class IntroActivity extends LifecycleActivity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_intro);
 
+        /*CrystalDatabase db = CrystalDatabase.getAppDatabase(getApplicationContext());
+        List<CryptoCoinTransaction> transactions = RandomTransactionsGenerator.generateTransactions(100,1262304001,1496275201,1,999999999);
+
+        for(int i=0;i<transactions.size();i++) {
+            db.transactionDao().insertTransaction(transactions.get(i));
+        }*/
+
         transactionListView = this.findViewById(R.id.transaction_list);
 
         transactionListViewModel = ViewModelProviders.of(this).get(TransactionListViewModel.class);
         LiveData<PagedList<CryptoCoinTransaction>> transactionData = transactionListViewModel.getTransactionList();
+        transactionListView.setData(null);
 
         transactionData.observe(this, new Observer<PagedList<CryptoCoinTransaction>>() {
             @Override

app/src/main/java/cy/agorise/crystalwallet/randomdatagenerators/RandomTransactionsGenerator.java

@@ -0,0 +1,39 @@
+package cy.agorise.crystalwallet.randomdatagenerators;
+
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.List;
+import java.util.Random;
+
+import cy.agorise.crystalwallet.models.CryptoCoinTransaction;
+
+/**
+ * Created by Henry Varona on 20/9/2017.
+ */
+
+public class RandomTransactionsGenerator {
+
+    static public List<CryptoCoinTransaction> generateTransactions(int numberOfTransactions, int minTimestamp, int maxTimestamp, int minAmount, int maxAmount){
+        ArrayList<CryptoCoinTransaction> result = new ArrayList<CryptoCoinTransaction>();
+        Random randomGenerator = new Random();
+        Calendar cal = Calendar.getInstance();
+        int randomTimeStamp;
+        int randomAmount;
+        CryptoCoinTransaction randomTransaction;
+
+        for (int i=0;i<numberOfTransactions;i++){
+            randomAmount = randomGenerator.nextInt((maxAmount - minAmount) + 1) + minAmount;
+            randomTimeStamp = randomGenerator.nextInt((maxTimestamp - minTimestamp) + 1) + minTimestamp;
+            cal.setTimeInMillis(randomTimeStamp*1000);
+
+            randomTransaction = new CryptoCoinTransaction();
+            randomTransaction.setAmount(randomAmount);
+            randomTransaction.setFrom("friend"+i);
+            randomTransaction.setTo("me"+i);
+            randomTransaction.setDate(cal.getTime());
+            result.add(randomTransaction);
+        }
+
+        return result;
+    }
+}

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

@@ -31,7 +31,10 @@ public class TransactionListAdapter extends PagedListAdapter<CryptoCoinTransacti
 
     @Override
     public TransactionViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
-        return null;
+        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.transaction_list_item,parent,false);
+
+
+        return new TransactionViewHolder(v);
     }
 
     @Override

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

@@ -3,6 +3,7 @@ package cy.agorise.crystalwallet.views;
 import android.arch.paging.PagedList;
 import android.arch.paging.PagedListAdapter;
 import android.content.Context;
+import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
@@ -51,13 +52,17 @@ public class TransactionListView extends RelativeLayout {
     public void init(){
         rootView = mInflater.inflate(R.layout.transaction_list, this, true);
         this.listView = rootView.findViewById(R.id.transactionListView);
+        this.listView.setLayoutManager(new LinearLayoutManager(this.getContext()));
+        this.listView.setNestedScrollingEnabled(false);
     }
 
     public void setData(PagedList<CryptoCoinTransaction> data){
         if (this.listAdapter == null) {
             this.listAdapter = new TransactionListAdapter();
             this.listView.setAdapter(this.listAdapter);
-        } else {
+        }
+
+        if (data != null) {
             this.listAdapter.setList(data);
         }
     }

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

@@ -3,7 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/activity_intro"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="wrap_content"
     android:paddingBottom="@dimen/activity_vertical_margin"
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"

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

@@ -1,10 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical" android:layout_width="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_height="match_parent">
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
 
     <android.support.v7.widget.RecyclerView
         android:id="@+id/transactionListView"
         android:layout_width="match_parent"
-        android:layout_height="match_parent" />
+        android:layout_height="wrap_content"
+        />
 </LinearLayout>

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

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="wrap_content"
     android:orientation="vertical"
     android:paddingLeft="10dp"
     android:paddingRight="10dp"