add gradient to bottom of screen to hide tx list bottom, also fixes app startup issue, and only displays most recent 100 txs

app/src/main/java/com/m2049r/xmrwallet/MainActivity.java

@@ -38,7 +38,8 @@ public class MainActivity extends AppCompatActivity implements MoneroHandlerThre
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         File walletFile = new File(getApplicationInfo().dataDir, Constants.WALLET_NAME);
-        if (walletFile.exists()) {
+        File walletKeysFile = new File(getApplicationInfo().dataDir, Constants.WALLET_NAME + ".keys");
+        if (walletKeysFile.exists()) {
             boolean promptPassword = PrefService.getInstance().getBoolean(Constants.PREF_USES_PASSWORD, false);
             if (!promptPassword) {
                 init(walletFile, "");

app/src/main/java/com/m2049r/xmrwallet/fragment/home/HomeFragment.java

@@ -141,7 +141,11 @@ public class HomeFragment extends Fragment implements TransactionInfoAdapter.TxI
                     txHistoryRecyclerView.setVisibility(View.GONE);
                 } else {
                     Collections.sort(history);
+                    if(history.size() > 100) {
+                        adapter.submitList(history.subList(0, 99));
+                    } else {
                         adapter.submitList(history);
+                    }
                     txHistoryRecyclerView.setVisibility(View.VISIBLE);
                 }
             });

app/src/main/res/drawable/gradient_bottom.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <gradient
+        android:angle="90"
+        android:endColor="@android:color/transparent"
+        android:startColor="@color/oled_colorBackground"
+        android:type="linear" />
+</shape>

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

@@ -20,14 +20,15 @@
 
     <TextView
         android:id="@+id/balance_unlocked_textview"
-        android:layout_width="match_parent"
+        android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:layout_marginStart="24dp"
         android:layout_marginEnd="24dp"
         android:layout_marginTop="24dp"
-        android:textAlignment="center"
+        android:textSize="24sp"
-        tools:text="UNLOCKED BALANCE"
+        android:textStyle="bold"
-        app:layout_constraintEnd_toEndOf="parent"
+        tools:text="100.000000000000 XMR"
+        app:layout_constraintEnd_toStartOf="@id/settings_imageview"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"/>
 
@@ -37,8 +38,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="24dp"
         android:layout_marginEnd="24dp"
-        android:textAlignment="center"
+        tools:text="+ 100.000000000000 confirming"
-        tools:text="LOCKED BALANCE"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/balance_unlocked_textview" />
@@ -46,22 +46,44 @@
     <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/transaction_history_recyclerview"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="0dp"
         android:layout_marginTop="16dp"
+        android:paddingStart="24dp"
+        android:paddingEnd="24dp"
+        android:paddingBottom="128dp"
+        android:clipToPadding="false"
         app:layout_constraintTop_toBottomOf="@id/balance_locked_textview"
-        app:layout_constraintBottom_toTopOf="@id/receive_button"
+        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintVertical_bias="0.0"/>
 
+    <ImageView
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:src="@drawable/gradient_bottom"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@id/receive_send_buttons_layout"
+        app:layout_constraintBottom_toBottomOf="parent"/>
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/receive_send_buttons_layout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingStart="24dp"
+        android:paddingEnd="24dp"
+        android:paddingBottom="16dp"
+        android:paddingTop="128dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent">
         <Button
             android:id="@+id/receive_button"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
-        android:layout_marginStart="24dp"
-        android:layout_marginEnd="24dp"
-        android:layout_marginBottom="16dp"
             android:background="@drawable/button_bg"
+            android:layout_marginEnd="4dp"
             android:text="@string/receive"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintEnd_toStartOf="@id/send_button"
@@ -71,14 +93,13 @@
             android:id="@+id/send_button"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
-        android:layout_marginStart="24dp"
-        android:layout_marginEnd="24dp"
-        android:layout_marginBottom="16dp"
             android:background="@drawable/button_bg"
+            android:layout_marginStart="4dp"
             android:text="@string/send"
             app:layout_constraintStart_toEndOf="@id/receive_button"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintBottom_toBottomOf="parent"/>
+    </androidx.constraintlayout.widget.ConstraintLayout>
 
     <ImageView
         android:id="@+id/settings_imageview"

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

@@ -4,8 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
-    android:layout_gravity="center"
+    android:layout_gravity="center">
-    android:layout_margin="4dp">
 
     <LinearLayout
         android:layout_width="match_parent"