onresume
Which activity method is called when orientation changes occur?
Interesting one… Activity is start onResume() is which you declare in your XML by default. And as I found from question answer on stack overflow is: Orientation Change onSaveInstanceState onPause onStop onCreate onStart onRestoreInstanceState onResume Switch TO Activity 2 onSaveInstanceState onPause Orientation Change WHILE IN Activity 2 onStop onCreate onStart Switchback BACK FROM Activity2 onResume … Read more
Android – Performing stop of activity that is not resumed
One Line: It seems some of your activity variables were freed from memory as Android OS needed memory for the Facebook application. Explanation: When an application in foreground needs more memory than that is available, Android frees some memory from the apps that are running in background. Foreground tasks always have higher priority than background … Read more
Android ViewPager setCurrentItem not working after onResume
i can’t really answer WHY exactly this happens, but if you delay the setCurrentItem call for a few milliseconds it should work. My guess is that because during onResume there hasn’t been a rendering pass yet, and the ViewPager needs one or something like that. private ViewPager viewPager; @Override public void onResume() { final int … Read more
Android onResume() method equivalent in Flutter
You can use the WidgetsBindingObserver and check the AppLifeCycleState like this example: class YourWidgetState extends State<YourWidget> with WidgetsBindingObserver { @override void initState() { WidgetsBinding.instance?.addObserver(this); super.initState(); } @override void dispose() { WidgetsBinding.instance?.removeObserver(this); super.dispose(); } @override void didChangeAppLifecycleState(AppLifecycleState state) { if (state == AppLifecycleState.resumed) { //do your stuff } } } Take in mind that It will … Read more
Android – save/restore fragment state
When a fragment is moved to the backstack, it isn’t destroyed. All the instance variables remain there. So this is the place to save your data. In onActivityCreated you check the following conditions: Is the bundle != null? If yes, that’s where the data is saved (probably orientation change). Is there data saved in instance … Read more
ViewPager with fragments – onPause(), onResume()?
The ViewPager comes with the OnPageChangeListener interface. By setting some flags for the previous and currently shown pages, you can emulate this behavior.
How to use onResume()?
Any Activity that restarts has its onResume() method executed first. To use this method, do this: @Override public void onResume(){ super.onResume(); // put your code here… }
Fragment onResume() & onPause() is not called on backstack
The fragments onResume() or onPause() will be called only when the Activities onResume() or onPause() is called. They are tightly coupled to the Activity. Read the Handling the Fragment Lifecycle section of this article.
Android activity life cycle – what are all these methods for?
See it in Activity Lifecycle (at Android Developers). onCreate(): Called when the activity is first created. This is where you should do all of your normal static set up: create views, bind data to lists, etc. This method also provides you with a Bundle containing the activity’s previously frozen state, if there was one. Always … Read more