+ Enable R8

+ Destroy binding instance in onDestroy()
+ fix "javax.net.ssl.SSLHandshakeException" issue

app/build.gradle

@@ -69,6 +69,7 @@ dependencies {
   implementation "com.google.code.gson:gson:$gson"
   implementation "com.squareup.okhttp3:logging-interceptor:$interceptor"
   implementation "com.mocklets:pluto:$pluto"
+  implementation "com.google.android.gms:play-services-auth:$play_services"
 
   // UI
   implementation "com.google.android.material:material:$material_design"

app/proguard-rules.pro

@@ -18,4 +18,28 @@
 
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
-#-renamesourcefileattribute SourceFile
+#-renamesourcefileattribute SourceFile
+
+## okhttp
+-dontwarn okhttp3.**
+-dontwarn okio.**
+-dontwarn javax.annotation.**
+# A resource is loaded with a relative path so the package of this class must be preserved.
+-keepnames class okhttp3.internal.publicsuffix.PublicSuffixDatabase
+
+## Retrofit
+# Platform calls Class.forName on types which do not exist on Android to determine platform.
+-dontnote retrofit2.Platform
+# Platform used when running on Java 8 VMs. Will not be used at runtime.
+-dontwarn retrofit2.Platform$Java8
+# Retain generic type information for use by reflection by converters and adapters.
+-keepattributes Signature
+# Retain declared checked exceptions for use by a Proxy instance.
+-keepattributes Exceptions
+
+## Bottom Navigation
+-keep public class com.google.android.material.bottomnavigation.* { *; }
+
+# To prevent obfusticating model classes
+# TODO : Make sure you do this for each feature module in your app
+-keep class com.mina_mikhail.newsapp.features.news.domain.entity.* { *; }

app/src/main/java/com/mina_mikhail/newsapp/core/MyApplication.kt

@@ -1,12 +1,18 @@
 package com.mina_mikhail.newsapp.core
 
 import android.app.Application
+import com.google.android.gms.common.GooglePlayServicesNotAvailableException
+import com.google.android.gms.common.GooglePlayServicesRepairableException
+import com.google.android.gms.security.ProviderInstaller
 import com.mina_mikhail.newsapp.BuildConfig
 import com.mocklets.pluto.Pluto
 import com.mocklets.pluto.PlutoLog
 import com.mocklets.pluto.modules.exceptions.ANRException
 import com.mocklets.pluto.modules.exceptions.ANRListener
 import dagger.hilt.android.HiltAndroidApp
+import java.security.KeyManagementException
+import java.security.NoSuchAlgorithmException
+import javax.net.ssl.SSLContext
 
 @HiltAndroidApp
 class MyApplication : Application() {
@@ -15,11 +21,32 @@ class MyApplication : Application() {
   fun onCreate() {
     super.onCreate()
 
+    updateAndroidSecurityProvider()
+
     initPlutoNetworkInspection()
 
     initPlutoANRInspection()
   }
 
+  private fun updateAndroidSecurityProvider() {
+    // To fix the following issue, when run app in cellular data, Apis not working
+    // javax.net.ssl.SSLHandshakeException: SSL handshake aborted: ssl=0x7edfc49e08: I/O error during system call, Connection reset by peer
+    try {
+      ProviderInstaller.installIfNeeded(applicationContext)
+      val sslContext: SSLContext = SSLContext.getInstance("TLSv1.2")
+      sslContext.init(null, null, null)
+      sslContext.createSSLEngine()
+    } catch (e: GooglePlayServicesRepairableException) {
+      e.printStackTrace()
+    } catch (e: GooglePlayServicesNotAvailableException) {
+      e.printStackTrace()
+    } catch (e: NoSuchAlgorithmException) {
+      e.printStackTrace()
+    } catch (e: KeyManagementException) {
+      e.printStackTrace()
+    }
+  }
+
   private fun initPlutoNetworkInspection() {
     if (BuildConfig.DEBUG) {
       Pluto.initialize(this)

app/src/main/java/com/mina_mikhail/newsapp/core/view/BaseActivity.kt

@@ -8,7 +8,8 @@ import androidx.viewbinding.ViewBinding
 
 abstract class BaseActivity<VB : ViewBinding> : AppCompatActivity() {
 
-  protected lateinit var binding: VB
+  private var _binding: VB? = null
+  open val binding get() = _binding!!
   protected lateinit var navController: LiveData<NavController>
 
   override
@@ -32,7 +33,7 @@ abstract class BaseActivity<VB : ViewBinding> : AppCompatActivity() {
   }
 
   private fun initViewBinding() {
-    binding = getViewBinding()
+    _binding = getViewBinding()
   }
 
   abstract fun getViewBinding(): VB
@@ -45,4 +46,11 @@ abstract class BaseActivity<VB : ViewBinding> : AppCompatActivity() {
   fun onSupportNavigateUp(): Boolean {
     return navController.value?.navigateUp()!! || super.onSupportNavigateUp()
   }
+
+  override
+  fun onDestroy() {
+    super.onDestroy()
+
+    _binding = null
+  }
 }

app/src/main/java/com/mina_mikhail/newsapp/core/view/BaseFragment.kt

@@ -12,7 +12,8 @@ import com.mina_mikhail.newsapp.core.utils.showLoadingDialog
 
 abstract class BaseFragment<VB : ViewBinding> : Fragment() {
 
-  protected lateinit var binding: VB
+  private var _binding: VB? = null
+  open val binding get() = _binding!!
   private var mRootView: View? = null
   private var hasInitializedRootView = false
   private var progressDialog: Dialog? = null
@@ -27,7 +28,7 @@ abstract class BaseFragment<VB : ViewBinding> : Fragment() {
   }
 
   private fun initViewBinding(inflater: LayoutInflater, container: ViewGroup?) {
-    binding = getViewBinding(inflater, container)
+    _binding = getViewBinding(inflater, container)
     mRootView = binding.root
   }
 
@@ -81,4 +82,11 @@ abstract class BaseFragment<VB : ViewBinding> : Fragment() {
   }
 
   fun hideLoading() = hideLoadingDialog(progressDialog, requireActivity())
+
+  override
+  fun onDestroyView() {
+    super.onDestroyView()
+
+    _binding = null
+  }
 }

build.gradle

@@ -26,6 +26,7 @@ buildscript {
     gson = '2.8.6'
     interceptor = '4.8.1'
     pluto = '1.0.2-beta'
+    play_services = '19.2.0'
 
     // UI
     material_design = '1.4.0'

gradle.properties

@@ -18,4 +18,5 @@ android.useAndroidX=true
 # Automatically convert third-party libraries to use AndroidX
 android.enableJetifier=true
 # Kotlin code style for this project: "official" or "obsolete":
-kotlin.code.style=official
+kotlin.code.style=official
+android.enableR8=true