Android screen orientation

Android & iOS development

disable orientation change <activity android:name=”.MainActivity” android:screenOrientation=”portrait” tools:ignore=”LockedOrientationActivity”> Handling orientation state Saving instance state @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putInt(“ScoreKey”, mScore); outState.putInt(“IndexKey”, mIndex); } Retrieving instance state @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (savedInstanceState != null){ mScore = savedInstanceState.getInt(“ScoreKey”); mIndex = savedInstanceState.getInt(“IndexKey”); } else { mScore = 0; mIndex = 0;…

Android App Lifecycle

Android & iOS development, Kotlin & Java

Code class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) Log.d(“LifecycleTest”, “onCreate”) } override fun onStart() { super.onStart() Log.d(“LifecycleTest”, “onStart”) } override fun onResume() { super.onResume() Log.d(“LifecycleTest”, “onResume”) } override fun onPause() { super.onPause() Log.d(“LifecycleTest”, “onPause”) } override fun onSaveInstanceState(outState: Bundle) { super.onSaveInstanceState(outState) Log.d(“LifecycleTest”, “onSaveInstanceState”) } override fun onRestoreInstanceState(savedInstanceState: Bundle) { Log.d(“LifecycleTest”,…