feat: Add splash screen

app/src/main/AndroidManifest.xml

@@ -36,7 +36,7 @@
         <activity
             android:name=".ui.MainActivity"
             android:exported="true"
-            android:theme="@style/Theme.OpenHealth.NoActionBar">
+            android:theme="@style/Theme.OpenHealth.SplashScreen">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
@@ -46,7 +46,8 @@
 
         <!-- Activity for error handling -->
         <activity android:name=".ui.ErrorActivity"
-            android:exported="false" />
+            android:theme="@style/Theme.OpenHealth.NoActionBar"
+        android:exported="false" />
 
         <service
             android:name=".services.OpenHealthService"

app/src/main/java/com/dzeio/openhealth/ui/MainActivity.kt

@@ -41,6 +41,12 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
     override val bindingInflater: (LayoutInflater) -> ActivityMainBinding =
         ActivityMainBinding::inflate
 
+    override fun onCreate(savedInstanceState: Bundle?) {
+        setTheme(R.style.Theme_OpenHealth_NoActionBar)
+        super.onCreate(savedInstanceState)
+
+    }
+
     override fun onCreated(savedInstanceState: Bundle?) {
         super.onCreated(savedInstanceState)
 

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

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android" android:opacity="opaque">
+<!--    <item android:drawable="?colorPrimary" />-->
+    <item
+        android:width="133dp"
+        android:gravity="center">
+        <bitmap
+            android:gravity="center"
+            android:scaleType="centerInside"
+            android:src="@drawable/logo_300" />
+    </item>
+</layer-list>

app/src/main/res/values/themes.xml

@@ -12,4 +12,8 @@
         <item name="cornerSize">16dp</item>
     </style>
 
+    <style name="Theme.OpenHealth.SplashScreen" parent="Theme.OpenHealth.NoActionBar">
+        <item name="android:windowBackground">@drawable/splash_screen</item>
+    </style>
+
 </resources>