Add ApplicationContext initializer and getter

app/src/main/java/dev/evowizz/commonlib/MainActivity.kt

@@ -27,6 +27,7 @@ import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
 import dev.evowizz.common.hashing.Algorithm
 import dev.evowizz.common.hashing.Hashing
+import dev.evowizz.common.init.ApplicationContext
 import dev.evowizz.common.mosaic.MosaicBuilder
 import dev.evowizz.common.mosaic.URLSpanProvider
 import dev.evowizz.common.os.AndroidVersion
@@ -57,7 +58,8 @@ class MainActivity : AppCompatActivity() {
         /* Using Int.toDp(...)*/
         val toDpValue = 16.toDp(this)
 
-        val nBarMode = getNavigationBarMode(this)
+        val aContext = ApplicationContext.get()
+        val nBarMode = getNavigationBarMode(aContext)
 
         val aCodename = AndroidVersion.getCodename()
         val aIsPreview = AndroidVersion.isPreview()

core/src/main/AndroidManifest.xml

@@ -15,4 +15,20 @@
   -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-  package="dev.evowizz.common.core" />
+  xmlns:tools="http://schemas.android.com/tools"
+  package="dev.evowizz.common.core">
+
+    <application>
+        <provider
+          android:name="androidx.startup.InitializationProvider"
+          android:authorities="${applicationId}.androidx-startup"
+          android:directBootAware="true"
+          android:exported="false"
+          tools:node="merge">
+
+            <meta-data
+              android:name="dev.evowizz.common.init.ApplicationContext"
+              android:value="androidx.startup" />
+        </provider>
+    </application>
+</manifest>

core/src/main/java/dev/evowizz/common/init/ApplicationContext.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2022 Dylan Roussel
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dev.evowizz.common.init
+
+import android.annotation.SuppressLint
+import android.content.Context
+import androidx.startup.Initializer
+
+class ApplicationContext : Initializer<ApplicationContext> {
+
+    override fun create(context: Context): ApplicationContext {
+        _context = context
+        return this
+    }
+
+    /**
+     * ApplicationContext initializer does not depend on anything else.
+     */
+    override fun dependencies() = emptyList<Nothing>()
+
+    companion object {
+
+        @SuppressLint("StaticFieldLeak")
+        private var _context: Context? = null
+
+        fun get() = _context ?: error("Context not initialized.")
+    }
+}