Added launch page switch, LibrariesActivity, setting fragment to about fragment action.

app/build.gradle

@@ -1,5 +1,6 @@
 plugins {
     id 'com.android.application'
+    id 'com.mikepenz.aboutlibraries.plugin'
 }
 
 android {
@@ -13,38 +14,93 @@ android {
         versionName "1.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+
+        // Required when setting minSdkVersion to 20 or lower
+        multiDexEnabled true
+    }
+
+    signingConfigs {
+        release {
+            Properties buildPro = buildSign()
+            storeFile file(buildPro['storeFile'])
+            storePassword buildPro['storePassword']
+            keyAlias buildPro['keyAlias']
+            keyPassword buildPro['keyPassword']
+        }
     }
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
+            shrinkResources true
+            signingConfig signingConfigs.release
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            zipAlignEnabled true
         }
     }
+
+    android.applicationVariants.all {
+        variant ->
+            variant.outputs.all {
+                output -> outputFileName = new File(variant.name, "OxygenToolbox" + "_" + defaultConfig.versionName + "-" + defaultConfig.versionCode + "_" + buildType.name + ".apk")
+            }
+    }
+
     compileOptions {
+        // Flag to enable support for the new language APIs
+        coreLibraryDesugaringEnabled true
+        // Sets Java compatibility to Java 8
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+
     buildFeatures {
         viewBinding true
     }
+
     namespace 'com.fatapp.oxygentoolbox'
 }
 
+def buildSign() {
+    Properties buildProperties = new Properties()
+    buildProperties.load(new FileInputStream(file("../keystore.properties")))
+    return buildProperties
+}
+
+aboutLibraries {
+    registerAndroidTasks = false
+    outputFileName = "dependencies.json"
+    exclusionPatterns = [
+            ~'androidx.*',
+            ~'org.jetbrains.*',
+            ~"com.google.android.*",
+            ~"com.google.guava:listenablefuture"
+    ]
+}
+
+task exportLibrariesToJson(group: 'build', description: 'Generate libraries definitions json file', type: com.mikepenz.aboutlibraries.plugin.AboutLibrariesTask, dependsOn:'collectDependencies') {
+    resultDirectory = project.file('src/main/res/raw/')
+    variant = 'release'
+}
+
+afterEvaluate {
+    def assembleTask = tasks.findByName("assembleDebug")
+    assembleTask.dependsOn(exportLibrariesToJson)
+}
+
 dependencies {
-    implementation 'androidx.preference:preference:1.2.0'
+    //noinspection GradleDependency
+    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.6'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     implementation 'androidx.appcompat:appcompat:1.4.2'
-    implementation 'com.google.android.material:material:1.6.1'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
-    implementation 'androidx.navigation:navigation-fragment-ktx:2.4.2'
-    implementation 'androidx.navigation:navigation-ui-ktx:2.4.2'
-    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.4.1'
-    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.1'
+    implementation 'androidx.preference:preference:1.2.0'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.5.0'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.5.0'
     implementation 'androidx.core:core-splashscreen:1.0.0-rc01'
-    implementation 'androidx.preference:preference-ktx:1.2.0'
+    implementation 'com.google.android.material:material:1.6.1'
 
     implementation 'com.google.code.gson:gson:2.9.0'
-}
+}