Add network_security_config.xml.

Replace enums with sealed class.

Author: kanch231004

app/build.gradle

@@ -12,7 +12,7 @@ allOpen {
 }
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 30
 
     dataBinding {
         enabled = true
@@ -21,7 +21,7 @@ android {
     defaultConfig {
         applicationId "com.kanchanpal.newsfeed"
         minSdkVersion 21
-        targetSdkVersion 29
+        targetSdkVersion 30
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "com.kanchanpal.newsfeed.util.AppTestRunner"

app/src/main/AndroidManifest.xml

@@ -2,19 +2,19 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.kanchanpal.newsfeed">
 
-
-    <uses-permission android:name="android.permission.INTERNET"/>
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 
     <application
-        android:name="com.kanchanpal.newsfeed.NewsApp"
+        android:name=".NewsApp"
         android:allowBackup="true"
+        android:networkSecurityConfig="@xml/network_security_config"
+        android:hardwareAccelerated="false"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
+        android:largeHeap="true"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:largeHeap="true"
-        android:hardwareAccelerated="false"
         android:theme="@style/AppTheme">
         <activity android:name="com.kanchanpal.newsfeed.MainActivity">
             <intent-filter>
@@ -25,4 +25,4 @@
         </activity>
     </application>
 
-</manifest>
+</manifest>

app/src/main/java/com/kanchanpal/newsfeed/api/Status.kt

@@ -1,18 +1,7 @@
 package com.kanchanpal.newsfeed.api
 
-enum class Status {
-    RUNNING,
-    SUCCESS,
-    FAILED
-}
-
-@Suppress("DataClassPrivateConstructor")
-data class NetworkState private constructor(
-    val status: Status,
-    val msg: String? = null) {
-    companion object {
-        val LOADED = NetworkState(Status.SUCCESS)
-        val LOADING = NetworkState(Status.RUNNING)
-        fun error(msg: String?) = NetworkState(Status.FAILED, msg)
-    }
+sealed class NetworkState {
+    object LOADED : NetworkState()
+    object LOADING : NetworkState()
+    data class ERROR(val msg: String): NetworkState()
 }

app/src/main/java/com/kanchanpal/newsfeed/data/newsSet/NewsPageDataSource.kt

@@ -1,5 +1,6 @@
 package com.kanchanpal.newsfeed.data.newsSet
 
+import android.util.Log
 import androidx.lifecycle.MutableLiveData
 import androidx.paging.PageKeyedDataSource
 import com.kanchanpal.newsfeed.api.NetworkState
@@ -10,7 +11,6 @@ import com.kanchanpal.newsfeed.data.dao.NewsDao
 import kotlinx.coroutines.CoroutineExceptionHandler
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.launch
-import timber.log.Timber
 import javax.inject.Inject
 
 class NewsPageDataSource @Inject constructor(
@@ -49,7 +49,7 @@ class NewsPageDataSource @Inject constructor(
         coroutineScope.launch(getJobErrorHandler()) {
             when (val response = remoteDataSource.fetchNewsList(apiKey, page, pageSize)) {
                 is Result.Error -> {
-                    networkState.postValue(NetworkState.error(response.message ?: "Unknown error"))
+                    networkState.postValue(NetworkState.ERROR(response.message ?: "Unknown error"))
                     postError(response.message)
                 }
                 is Result.Success -> {
@@ -67,6 +67,6 @@ class NewsPageDataSource @Inject constructor(
     }
 
     private fun postError(message: String?) {
-        Timber.e("An error happened: $message")
+        Log.e("NewsPageDataSource","An error happened: $message")
     }
 }

app/src/main/java/com/kanchanpal/newsfeed/di/AppInjector.kt

@@ -42,8 +42,7 @@ object AppInjector {
 
                 }
 
-                override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle?) {
-
+                override fun onActivitySaveInstanceState(p0: Activity, p1: Bundle) {
                 }
 
                 override fun onActivityDestroyed(activity: Activity) {

app/src/main/java/com/kanchanpal/newsfeed/news/NewsListFragment.kt

@@ -9,7 +9,7 @@ import androidx.fragment.app.Fragment
 import androidx.fragment.app.viewModels
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
-import com.kanchanpal.newsfeed.api.Status
+import com.kanchanpal.newsfeed.api.NetworkState
 import com.kanchanpal.newsfeed.commonUtil.ConnectivityUtil
 import com.kanchanpal.newsfeed.databinding.FragmentNewsListBinding
 import com.kanchanpal.newsfeed.di.Injectable
@@ -51,15 +51,15 @@ class NewsListFragment : Fragment(), Injectable {
     private fun subscribeUI(adapter: NewsAdapter) {
         val data = viewModel.newsList(isConnected)
         data?.networkState?.observe(viewLifecycleOwner, Observer {
-            when(it.status) {
-                Status.RUNNING -> {
+            when(it) {
+                is NetworkState.LOADING -> {
                     progressBar.visibility = View.VISIBLE
                 }
-                Status.FAILED -> {
+                is NetworkState.ERROR -> {
                     progressBar.visibility = View.GONE
                     // Handle fail state
                 }
-                Status.SUCCESS -> {
+                is NetworkState.LOADED -> {
                     progressBar.visibility = View.GONE
                 }
             }

app/src/main/res/xml/network_security_config.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<network-security-config>
+    <debug-overrides>
+        <trust-anchors>
+            <!-- Trust user added CAs while debuggable only -->
+            <certificates src="user" />
+        </trust-anchors>
+    </debug-overrides>
+</network-security-config>

build.gradle

@@ -3,9 +3,9 @@
 buildscript {
     ext {
         // Sdk and tools
-        compileSdkVersion = 28
+        compileSdkVersion = 30
         minSdkVersion = 21
-        targetSdkVersion = 28
+        targetSdkVersion = 30
 
         // App dependencies
         appCompatVersion = '1.1.0-beta01'