I have a problem with Simple Android Activity Lifecycle - kotlin

Question

Could you explain me, why both of my Android 12 and Android 8 does not call method onSaveInstanceState()
class MainActivity : AppCompatActivity() {
private lateinit var binding: ActivityMainBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater).also { setContentView(it.root) }
Log.d("AAAAA", "onCreate")
binding.buttonSet.setOnClickListener {
binding.tvData.text = "This is my meesage"
}
}
override fun onStart() {
Log.d("AAAAA", "onStart")
super.onStart()
}
override fun onResume() {
Log.d("AAAAA", "onResume")
super.onResume()
}
override fun onPause() {
Log.d("AAAAA", "onPause")
super.onPause()
}
override fun onStop() {
Log.d("AAAAA", "onStop")
super.onStop()
}
override fun onDestroy() {
Log.d("AAAAA", "onDestroy")
super.onDestroy()
}
override fun onRestart() {
Log.d("AAAAA", "onRestart")
super.onRestart()
}
override fun onSaveInstanceState(outState: Bundle, outPersistentState: PersistableBundle) {
super.onSaveInstanceState(outState, outPersistentState)
Log.d("AAAAA", "onSaveInstanceState")
}
override fun onRestoreInstanceState(savedInstanceState: Bundle) {
super.onRestoreInstanceState(savedInstanceState)
Log.d("AAAAA", "onRestoreInstanceState")
}
}
My Logcat:
2022-07-16 11:37:30.344 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onCreate
2022-07-16 11:37:30.346 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onStart
2022-07-16 11:37:30.346 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onRestoreInstanceState
2022-07-16 11:37:30.347 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onResume
2022-07-16 11:37:31.458 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onPause
2022-07-16 11:37:31.460 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onStop
2022-07-16 11:37:31.461 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onDestroy
2022-07-16 11:37:31.518 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onCreate
2022-07-16 11:37:31.519 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onStart
2022-07-16 11:37:31.520 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onRestoreInstanceState
2022-07-16 11:37:31.520 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onResume
2022-07-16 11:40:26.012 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onPause
2022-07-16 11:40:26.015 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onStop
2022-07-16 11:40:26.016 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onDestroy
2022-07-16 11:40:26.076 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onCreate
2022-07-16 11:40:26.078 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onStart
2022-07-16 11:40:26.078 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onRestoreInstanceState
2022-07-16 11:40:26.079 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onResume
2022-07-16 11:40:27.013 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onPause
2022-07-16 11:40:27.014 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onStop
2022-07-16 11:40:27.015 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onDestroy
2022-07-16 11:40:27.067 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onCreate
2022-07-16 11:40:27.069 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onStart
2022-07-16 11:40:27.070 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onRestoreInstanceState
2022-07-16 11:40:27.070 29235-29235/com.elene.activitylifecycle23 D/AAAAA: onResume
My Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.elene.activitylifecycle23">
<application
android:allowBackup="true"
android:dataExtractionRules="#xml/data_extraction_rules"
android:fullBackupContent="#xml/backup_rules"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.ActivityLifecycle23"
tools:targetApi="31">
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
My XML
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="#+id/tvData"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/buttonSet"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.636" />
</androidx.constraintlayout.widget.ConstraintLayout>

Answer 1

It was a problem with onSaveInstanceState() method. In this occasion we should use onSaveInstanceState(outState: Bundle)