Finalize sample convertion to kotlin + closeScopeOnDestroy

toothpick-sample/src/main/java/com/example/toothpick/activity/AddNewActivity.kt

@@ -0,0 +1,54 @@
+package com.example.toothpick.activity
+
+import android.content.Intent
+import android.os.Bundle
+import android.view.View
+import android.widget.Button
+import android.widget.EditText
+import androidx.appcompat.app.AppCompatActivity
+import com.example.toothpick.R
+import com.example.toothpick.annotation.ApplicationScope
+import com.example.toothpick.helper.BackpackItemValidator
+import toothpick.Toothpick
+import toothpick.ktp.KTP
+import toothpick.smoothie.lifecycle.closeOnDestroy
+import javax.inject.Inject
+
+class AddNewActivity : AppCompatActivity() {
+
+    companion object {
+        const val NEW_ITEM_NAME_KEY = "name"
+    }
+
+    //will be created as a singleton in the root scope
+    //and is releasable under memory pressure
+    @Inject
+    lateinit var backpackItemValidator: BackpackItemValidator
+
+    public override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        // 1. Open Activity scope as child of Application scope
+        // 2. Inject dependencies
+        KTP.openScope(ApplicationScope::class.java)
+                .openSubScope(this)
+                .closeOnDestroy(this)
+                .inject(this)
+        setupUIComponents()
+    }
+
+    private fun setupUIComponents() {
+        setContentView(R.layout.backpack_new)
+        val editText = findViewById<EditText>(R.id.new_name)
+        val button = findViewById<Button>(R.id.add_item)
+        button.setOnClickListener {
+            val text = editText.text.toString()
+            if (backpackItemValidator.isValidName(text)) {
+                val intent = Intent()
+                        .putExtra(NEW_ITEM_NAME_KEY, text)
+                setResult(RESULT_OK, intent)
+                finish()
+            }
+        }
+    }
+}

toothpick-sample/src/main/java/com/example/toothpick/activity/SimpleBackpackItemsActivity.kt

@@ -10,7 +10,7 @@ import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import com.example.toothpick.R
-import com.example.toothpick.activity.AddNewActivity.NEW_ITEM_NAME_KEY
+import com.example.toothpick.activity.AddNewActivity.Companion.NEW_ITEM_NAME_KEY
 import com.example.toothpick.adapter.BackpackAdapter
 import com.example.toothpick.adapter.IBackpackAdapter
 import com.example.toothpick.annotation.ApplicationScope
@@ -86,7 +86,6 @@ class SimpleBackpackItemsActivity : AppCompatActivity() {
         }
     }
 
-
     private fun setupUIComponents() {
         setContentView(R.layout.backpack_list)
         coordinatorLayout = findViewById(R.id.coordinatorLayout)