app: introduce 1.1.1

- got rid of junk code
- replaced HTML with PDF
- minor UI fixes
- got rid of unused code

README.md

@@ -3,6 +3,13 @@ Rulebook - simple android _app_, that can help you learn _Russian Language_.
 This application is, in fact, _a collection_ of all the existing and most important _rules_ of the Russian language (spelling, punctuation, vocabulary, etc.) with the ability to save them to the device internal storage in the form of _.txt_ files and no more.
 The development was started in _June 2020_.
 
+## Notes
+These libraries were used:
+ - PdfiumAndroid (no longer maintained) [Modified]
+ - AndroidPdfViewer (no longer maintained) [Modified]
+ - CyaneaThemeEngine (no longer maintained) [Modified]
+
+
 ```
 #
 # Copyright (C) 2021 VerNANDo57 <[email protected]>

app/build.gradle

@@ -9,8 +9,8 @@ android {
         applicationId "com.verNANDo57.rulebook_educational"
         minSdkVersion 22
         targetSdkVersion 31
-        versionCode 110
-        versionName '1.1.0'
+        versionCode 111
+        versionName '1.1.1'
         multiDexEnabled true
     }
 
@@ -21,11 +21,12 @@ android {
             debuggable false
             jniDebuggable false
             renderscriptDebuggable false
-            renderscriptOptimLevel 5
+            renderscriptOptimLevel 3
             multiDexEnabled true
             signingConfig signingConfigs.release
         }
         debug {
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
             debuggable true
             jniDebuggable false
             renderscriptDebuggable false
@@ -44,14 +45,15 @@ android {
 }
 
 dependencies {
-    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation 'androidx.appcompat:appcompat:1.3.1'
-    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'com.google.android.material:material:1.3.0'
     implementation 'androidx.legacy:legacy-preference-v14:1.0.0'
     implementation 'androidx.preference:preference-ktx:1.1.1'
     implementation 'androidx.coordinatorlayout:coordinatorlayout:1.1.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
-    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.6.0-RC2'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.2'
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.0'
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.6.0'
 }
 repositories {
     mavenCentral()

app/proguard-rules.pro

@@ -18,4 +18,10 @@
 
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
-#-renamesourcefileattribute SourceFile
+#-renamesourcefileattribute SourceFile
+
+-keep public class com.verNANDo57.rulebook_educational.pdflib.pdfium.util.Size
+-keep public class com.verNANDo57.rulebook_educational.pdflib.pdfium.util.SizeF
+-keep public class com.verNANDo57.rulebook_educational.pdflib.pdfium.PdfDocument
+-keep public class com.verNANDo57.rulebook_educational.pdflib.pdfium.PdfiumCore
+-keep public class com.verNANDo57.rulebook_educational.pdflib.pdfium.PdfPasswordException