Add ci workflow and code cleanup

.github/workflows/ci.yml

@@ -0,0 +1,49 @@
+name: Continuous Integration
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          submodules: "recursive"
+
+      - name: Set up JDK environment
+        uses: actions/setup-java@v3
+        with:
+          distribution: "zulu"
+          java-version: 17
+
+      - name: Make gradlew executable
+        run: chmod +x ./gradlew
+
+      - name: Setup Gradle
+        uses: gradle/gradle-build-action@v2
+
+      - name: Run local unit tests
+        run: bash ./gradlew test --stacktrace
+
+  build:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          submodules: "recursive"
+
+      - name: Set up JDK environment
+        uses: actions/setup-java@v3
+        with:
+          distribution: "zulu"
+          java-version: 17
+
+      - name: Make gradlew executable
+        run: chmod +x ./gradlew
+
+      - name: Setup Gradle
+        uses: gradle/gradle-build-action@v2
+
+      - name: Build the app
+        run: bash ./gradlew build --stacktrace

app/src/main/res/layout-land/content_main.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
-    android:id="@+id/main_content"
+<LinearLayout android:id="@+id/main_content"
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
@@ -35,30 +34,31 @@
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             android:layout_marginTop="@dimen/activity_vertical_margin"
-            android:rotation="90"/>
+            android:rotation="90" />
 
         <ImageView
             android:id="@+id/mode_arrow_left"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/activity_vertical_margin"
-            android:src="@drawable/ic_keyboard_arrow_left_black_24dp"
+            app:srcCompat="@drawable/ic_keyboard_arrow_left_black_24dp"
             android:layout_alignParentTop="true"
             android:padding="@dimen/activity_vertical_margin"
             android:layout_centerHorizontal="true"
             android:onClick="onClick"
-            android:rotation="90"/>
+            android:rotation="90" />
+
         <ImageView
             android:id="@+id/mode_arrow_right"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:src="@drawable/ic_keyboard_arrow_right_black_24dp"
+            app:srcCompat="@drawable/ic_keyboard_arrow_right_black_24dp"
             android:layout_alignParentBottom="true"
             android:padding="@dimen/activity_vertical_margin"
             android:layout_marginEnd="@dimen/activity_horizontal_margin"
             android:layout_centerHorizontal="true"
             android:onClick="onClick"
-            android:rotation="90"/>
+            android:rotation="90" />
     </RelativeLayout>
 
     <RelativeLayout
@@ -81,30 +81,31 @@
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             android:layout_marginTop="@dimen/activity_vertical_margin"
-            android:rotation="90"/>
+            android:rotation="90" />
 
         <ImageView
             android:id="@+id/size_arrow_left"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginTop="@dimen/activity_vertical_margin"
-            android:src="@drawable/ic_keyboard_arrow_left_black_24dp"
+            app:srcCompat="@drawable/ic_keyboard_arrow_left_black_24dp"
             android:layout_alignParentTop="true"
             android:padding="@dimen/activity_vertical_margin"
             android:layout_centerHorizontal="true"
             android:onClick="onClick"
             android:rotation="90" />
+
         <ImageView
             android:id="@+id/size_arrow_right"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:src="@drawable/ic_keyboard_arrow_right_black_24dp"
+            app:srcCompat="@drawable/ic_keyboard_arrow_right_black_24dp"
             android:layout_alignParentBottom="true"
             android:padding="@dimen/activity_vertical_margin"
             android:layout_marginEnd="@dimen/activity_horizontal_margin"
             android:layout_centerHorizontal="true"
             android:onClick="onClick"
-            android:rotation="90"/>
+            android:rotation="90" />
     </RelativeLayout>
 
     <LinearLayout
@@ -122,7 +123,7 @@
             android:background="@drawable/button_normal"
             android:text="@string/main_button_quick_start"
             android:id="@+id/quick_start_button"
-            android:onClick="onClick"/>
+            android:onClick="onClick" />
 
         <Button
             android:layout_marginBottom="@dimen/activity_vertical_margin"
@@ -132,7 +133,7 @@
             android:background="@drawable/button_fullwidth"
             android:text="@string/custom_game"
             android:id="@+id/action_settings"
-            android:onClick="onClick"/>
+            android:onClick="onClick" />
 
     </LinearLayout>
 

app/src/main/res/layout-land/content_place_ship.xml

@@ -1,7 +1,8 @@
 <?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="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <GridView xmlns:android="http://schemas.android.com/apk/res/android"
         android:id="@+id/placement_gridview"
@@ -10,7 +11,7 @@
         android:verticalSpacing="1px"
         android:horizontalSpacing="1px"
         android:stretchMode="columnWidth"
-        android:layout_weight="1"/>
+        android:layout_weight="1" />
 
     <LinearLayout
         android:id="@+id/game_linear_layout"
@@ -31,10 +32,10 @@
                 android:id="@+id/arrow_left"
                 android:layout_width="50dp"
                 android:layout_height="wrap_content"
-                android:src="@drawable/arrow_left_black"
+                app:srcCompat="@drawable/arrow_left_black"
                 android:adjustViewBounds="true"
                 android:onClick="onClickButton"
-                android:layout_gravity="center_vertical"/>
+                android:layout_gravity="center_vertical" />
 
             <LinearLayout
                 android:layout_width="wrap_content"
@@ -46,30 +47,30 @@
                     android:id="@+id/arrow_up"
                     android:layout_width="50dp"
                     android:layout_height="wrap_content"
-                    android:src="@drawable/arrow_up_black"
+                    app:srcCompat="@drawable/arrow_up_black"
                     android:adjustViewBounds="true"
                     android:onClick="onClickButton"
-                    android:layout_weight="1"/>
+                    android:layout_weight="1" />
 
                 <ImageView
                     android:id="@+id/arrow_down"
                     android:layout_width="50dp"
                     android:layout_height="wrap_content"
-                    android:src="@drawable/arrow_down_black"
+                    app:srcCompat="@drawable/arrow_down_black"
                     android:adjustViewBounds="true"
                     android:onClick="onClickButton"
-                    android:layout_weight="1"/>
+                    android:layout_weight="1" />
 
             </LinearLayout>
 
             <ImageView
                 android:id="@+id/arrow_right"
                 android:layout_width="50dp"
                 android:layout_height="wrap_content"
-                android:src="@drawable/arrow_right_black"
+                app:srcCompat="@drawable/arrow_right_black"
                 android:adjustViewBounds="true"
                 android:onClick="onClickButton"
-                android:layout_gravity="center_vertical"/>
+                android:layout_gravity="center_vertical" />
 
         </LinearLayout>
 
@@ -83,11 +84,11 @@
                 android:id="@+id/rotate_right"
                 android:layout_width="50dp"
                 android:layout_height="wrap_content"
-                android:src="@drawable/arrow_rotate_right_black"
+                app:srcCompat="@drawable/arrow_rotate_right_black"
                 android:adjustViewBounds="true"
                 android:onClick="onClickButton"
                 android:layout_weight="1"
-                android:layout_gravity="center_vertical"/>
+                android:layout_gravity="center_vertical" />
 
             <androidx.legacy.widget.Space
                 android:layout_width="50dp"
@@ -97,11 +98,11 @@
                 android:id="@+id/rotate_left"
                 android:layout_width="50dp"
                 android:layout_height="wrap_content"
-                android:src="@drawable/arrow_rotate_left_black"
+                app:srcCompat="@drawable/arrow_rotate_left_black"
                 android:adjustViewBounds="true"
                 android:onClick="onClickButton"
                 android:layout_weight="1"
-                android:layout_gravity="center_vertical"/>
+                android:layout_gravity="center_vertical" />
 
         </LinearLayout>
 
@@ -115,7 +116,7 @@
             android:layout_marginBottom="@dimen/activity_vertical_margin"
             android:background="@drawable/button_fullwidth"
             android:textColor="@color/white"
-            android:onClick="onClickReady"/>
+            android:onClick="onClickReady" />
 
     </LinearLayout>
 

app/src/main/res/layout-land/fragment_mode_main.xml

@@ -1,8 +1,8 @@
-
 <LinearLayout 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"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
@@ -13,7 +13,8 @@
     android:rotation="-90"
     tools:context="org.secuso.privacyfriendlybattleship.ui.MainActivity$GameModeFragment">
 
-    <TextView android:id="@+id/section_label"
+    <TextView
+        android:id="@+id/section_label"
         android:text="Label"
         android:textStyle="bold"
         android:textSize="18sp"
@@ -27,7 +28,7 @@
         android:layout_width="match_parent"
         android:adjustViewBounds="true"
         android:layout_centerInParent="true"
-        android:src="@drawable/ic_person_black_24px"
-        android:layout_height="0dp"/>
+        app:srcCompat="@drawable/ic_person_black_24px"
+        android:layout_height="0dp" />
 
 </LinearLayout>

app/src/main/res/layout-land/fragment_size_main.xml

@@ -14,5 +14,5 @@
         android:layout_height="wrap_content"
         android:id="@+id/select_size"
         android:layout_weight="1"
-        android:gravity="center"/>
+        android:gravity="center" />
 </LinearLayout>