Track the activity states

app/src/main/java/com/lambdaschool/favoritepicturesgallery/DetailsActivity.kt

@@ -5,11 +5,13 @@ import android.content.Context
 import android.content.Intent
 import android.support.v7.app.AppCompatActivity
 import android.os.Bundle
+import android.util.Log
 import android.view.View
 import android.view.WindowManager
 import android.widget.EditText
 import android.widget.ImageView
 import android.widget.TextView
+import android.widget.Toast
 import kotlinx.android.synthetic.main.activity_details.*
 
 class DetailsActivity : AppCompatActivity() {
@@ -19,6 +21,7 @@ class DetailsActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_details)
+        println("${javaClass.simpleName} - Lifecycle onCreate")
 
         val intent = intent
         data = intent.getSerializableExtra("object") as ImageData
@@ -36,6 +39,7 @@ class DetailsActivity : AppCompatActivity() {
 
     override fun onStart() {
         super.onStart()
+        println("${javaClass.simpleName} - Lifecycle onStart")
 
         image.setImageURI(data?.fileUri)
         //        image.setImageDrawable(getResources().getDrawable(android.R.drawable.btn_star));
@@ -54,4 +58,29 @@ class DetailsActivity : AppCompatActivity() {
         setResult(Activity.RESULT_OK, resultIntent)
         finish()
     }
+
+    override fun onResume() {
+        super.onResume()
+        println("${javaClass.simpleName} - Lifecycle onResume")
+    }
+
+    override fun onPause() {
+        super.onPause()
+        println("${javaClass.simpleName} - Lifecycle onPause")
+    }
+
+    override fun onStop() {
+        super.onStop()
+        println("${javaClass.simpleName} - Lifecycle onStop")
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        println("${javaClass.simpleName} - Lifecycle onDestroy")
+    }
+
+    override fun onRestart() {
+        super.onRestart()
+        println("${javaClass.simpleName} - Lifecycle onRestart")
+    }
 }

app/src/main/java/com/lambdaschool/favoritepicturesgallery/FullscreenActivity.kt

@@ -8,9 +8,11 @@ import android.net.Uri
 import android.os.Bundle
 import android.os.Handler
 import android.support.v7.app.AppCompatActivity
+import android.util.Log
 import android.view.MotionEvent
 import android.view.View
 import android.widget.ImageView
+import android.widget.Toast
 
 /**
  * An example full-screen activity that shows and hides the system UI (i.e.
@@ -55,6 +57,7 @@ class FullscreenActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        println("${javaClass.simpleName} - Lifecycle onCreate")
 
         val stringArray = arrayOfNulls<String>(5)
 
@@ -79,7 +82,6 @@ class FullscreenActivity : AppCompatActivity() {
 
     override fun onPostCreate(savedInstanceState: Bundle?) {
         super.onPostCreate(savedInstanceState)
-
         // Trigger the initial hide() shortly after the activity has been
         // created, to briefly hint to the user that UI controls
         // are available.
@@ -145,4 +147,34 @@ class FullscreenActivity : AppCompatActivity() {
          */
         private val UI_ANIMATION_DELAY = 300
     }
+
+    override fun onStart() {
+        super.onStart()
+        println("${javaClass.simpleName} - Lifecycle onStart")
+    }
+
+    override fun onResume() {
+        super.onResume()
+        println("${javaClass.simpleName} - Lifecycle onResume")
+    }
+
+    override fun onPause() {
+        super.onPause()
+        println("${javaClass.simpleName} - Lifecycle onPause")
+    }
+
+    override fun onStop() {
+        super.onStop()
+        println("${javaClass.simpleName} - Lifecycle onStop")
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        println("${javaClass.simpleName} - Lifecycle onDestroy")
+    }
+
+    override fun onRestart() {
+        super.onRestart()
+        println("${javaClass.simpleName} - Lifecycle onRestart")
+    }
 }

app/src/main/java/com/lambdaschool/favoritepicturesgallery/MainActivity.kt

@@ -14,6 +14,7 @@ import android.view.View
 import android.widget.Button
 import android.widget.LinearLayout
 import android.widget.TextView
+import android.widget.Toast
 import kotlinx.android.synthetic.main.activity_main.*
 
 import java.util.ArrayList
@@ -27,6 +28,8 @@ class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+        println("${javaClass.simpleName} - Lifecycle onCreate")
+
         val context = this
 
         imageList = ArrayList()
@@ -78,12 +81,41 @@ class MainActivity : AppCompatActivity() {
 
         }
         refreshListView()
-
     }
 
     companion object {
 
         internal const val REQUEST_IMAGE_GET = 1
         internal const val EDIT_IMAGE_REQUEST = 2
     }
+
+    override fun onStart() {
+        super.onStart()
+        println("${javaClass.simpleName} - Lifecycle onStart")
+    }
+
+    override fun onResume() {
+        super.onResume()
+        println("${javaClass.simpleName} - Lifecycle onResume")
+    }
+
+    override fun onPause() {
+        super.onPause()
+        println("${javaClass.simpleName} - Lifecycle onPause")
+    }
+
+    override fun onStop() {
+        super.onStop()
+        println("${javaClass.simpleName} - Lifecycle onStop")
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        println("${javaClass.simpleName} - Lifecycle onDestroy")
+    }
+
+    override fun onRestart() {
+        super.onRestart()
+        println("${javaClass.simpleName} - Lifecycle onRestart")
+    }
 }