Add NativeLibrary Kotlin class

Author: colemancda

Demo/app/src/main/java/com/pureswift/swiftandroid/EmbeddedAndroidViewDemo.kt

@@ -28,7 +28,7 @@ fun EmbeddedAndroidViewDemo() {
         //widget.ImageView
         AndroidView(factory = { ctx ->
             ImageView(ctx).apply {
-                val drawable = ContextCompat.getDrawable(ctx, R.drawable.ic_launcher_background)
+                val drawable = ContextCompat.getDrawable(ctx, R.drawable.ic_launcher_foreground)
                 setImageDrawable(drawable)
             }
         })

Demo/app/src/main/java/com/pureswift/swiftandroid/MainActivity.kt

@@ -16,12 +16,7 @@ import com.pureswift.swiftandroid.ui.theme.SwiftAndroidTheme
 class MainActivity : ComponentActivity() {
 
     init {
-        loadNativeLibrary()
-    }
-
-    private fun loadNativeLibrary() {
-        System.loadLibrary("Foundation")
-        System.loadLibrary("SwiftAndroidApp")
+        NativeLibrary.shared()
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -44,11 +39,7 @@ class MainActivity : ComponentActivity() {
 class MainActivityHello {
 
     init {
-        loadNativeLibrary()
-    }
-
-    private fun loadNativeLibrary() {
-        System.loadLibrary("SwiftAndroidApp")
+        NativeLibrary.shared()
     }
 
     external fun sayHelloName(): String

Demo/app/src/main/java/com/pureswift/swiftandroid/NativeLibrary.kt

@@ -0,0 +1,32 @@
+package com.pureswift.swiftandroid
+
+import android.util.Log
+
+class NativeLibrary private constructor() {
+
+    companion object {
+
+        @Volatile
+        var shared : NativeLibrary? = null
+
+        fun shared(): NativeLibrary {
+            return shared?: synchronized(this){
+                val instance = NativeLibrary()
+                shared = instance
+                return instance
+            }
+        }
+    }
+
+    init {
+        loadNativeLibrary()
+    }
+
+    private fun loadNativeLibrary() {
+        try {
+            System.loadLibrary("SwiftAndroidApp")
+        } catch (error: UnsatisfiedLinkError) {
+            Log.e("NativeLibrary", "Unable to load native libraries: $error")
+        }
+    }
+}