enable R8 code shrinker, (but disables obfuscate)

apng_android/build.gradle

@@ -16,7 +16,7 @@ android {
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }

apng_android/proguard-rules.pro

@@ -19,3 +19,5 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+
+-dontobfuscate

app/build.gradle

@@ -24,7 +24,7 @@ android {
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
             shrinkResources false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
 

app/proguard-rules.pro

@@ -38,3 +38,4 @@
 ## for DexGuard only
 #-keepresourcexmlelements manifest/application/meta-data@value=GlideModule
 
+-dontobfuscate

colorpicker/proguard-rules.pro

@@ -15,3 +15,4 @@
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
+-dontobfuscate

emoji/build.gradle

@@ -14,7 +14,7 @@ android {
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }

emoji/proguard-rules.pro

@@ -19,3 +19,4 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+-dontobfuscate

exif/build.gradle

@@ -13,7 +13,7 @@ android {
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }

exif/proguard-rules.pro

@@ -23,3 +23,4 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+-dontobfuscate

gradle.properties

@@ -22,4 +22,5 @@ org.gradle.jvmargs=-Xmx4096m
 org.gradle.caching=true
 android.useAndroidX=true
 android.enableJetifier=true
-
+android.debug.obsoleteApi=true
+android.enableR8=true

sample_apng/build.gradle

@@ -18,7 +18,7 @@ android {
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }

sample_apng/proguard-rules.pro

@@ -19,3 +19,4 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+-dontobfuscate