Merge pull request #67 from jama5262/issue-56

Add Shared preferences in the core module (Issue 56)

app/build.gradle.kts

@@ -46,6 +46,7 @@ android {
 
 dependencies {
     implementation (project(BuildModules.Libraries.Data))
+    implementation (project(BuildModules.Libraries.Core))
     implementation (project(BuildModules.Libraries.Network))
     implementation (project(BuildModules.Libraries.Repository))
 

core/src/main/java/com/android254/droidconKE2020/core/Preferences.kt

@@ -0,0 +1,10 @@
+package com.android254.droidconKE2020.core
+
+import android.content.SharedPreferences
+
+interface Preferences {
+    val sharedPref: SharedPreferences
+
+//    fun getUserName(defaultValue: String): String?
+//    fun setUserName(username: String)
+}

core/src/main/java/com/android254/droidconKE2020/core/PreferencesImpl.kt

@@ -0,0 +1,28 @@
+package com.android254.droidconKE2020.core
+
+import android.content.Context
+import android.content.SharedPreferences
+import com.android254.droidconKE2020.core.di.Constants.SHARED_PREF_FILE_NAME
+
+class PreferencesImpl(context: Context): Preferences {
+
+    override val sharedPref: SharedPreferences = context
+        .getSharedPreferences(SHARED_PREF_FILE_NAME, Context.MODE_PRIVATE)
+
+    private fun editSharedPref(action: (s: SharedPreferences.Editor) -> Unit) {
+        with (sharedPref.edit()) {
+            action(this)
+            apply()
+        }
+    }
+
+//    override fun getUserName(defaultValue: String): String? {
+//        return sharedPref.getString("userName", defaultValue)
+//    }
+//
+//    override fun setUserName(username: String) {
+//        editSharedPref {
+//            it.putString("userName", username)
+//        }
+//    }
+}

core/src/main/java/com/android254/droidconKE2020/core/di/Constants.kt

@@ -0,0 +1,5 @@
+package com.android254.droidconKE2020.core.di
+
+object Constants {
+    const val SHARED_PREF_FILE_NAME = "com.android254.droidconKE2020"
+}