Before Architecture Components we were used to save the UI state by onSaveInstanceState() method SaveInstanceState: We need to override onSaveInstanceState(Bundle savedInstanceState) and store the application state values in the form of bundle @Override savedInstanceState.putBoolean("mybool", true); } Saved instanceState could save only parceble data. ViewModel ViewModel instance is part of Applications process and hence it is able to handle configuration changes.
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
savedInstanceState.putInt("myint", 1);
savedInstanceState.putString("mystring", "Back to Activity State");
This have limit to staore small amount of parceble data
If process dies, ViewModel instance lost and all the saved state will also be lost.
It will work for large objects also.
Don't have any restritions to save the state.
You can read about Viewmodel here
How to validate email address in Android with Kotlin?
What is Android?
Extract Date and Time from Long Type Variable - RRutors
How to reduce APK package size?
What are the notifications available in android?
Open PDF in Google Drive with Intent in Android - RRutors
What are Android Versions available?
Fix Play Store Rejection Due to SMS Permission - RRutors
How to get an image resource by it's name in android?
How to get a contact image using a phone number in android?
FCM Not Receiving Notifications in Android - RRutors
How to convert milli seconds to hours, minutes and seconds in Android?
Android Studio project R can't find
ERR_ACCESS_DENIED in Android Webview with sdk 30
What is the Different Between val and var in Kotlin?
What is ANR? How to avoid and resolve it?
What is Intent? What is the difference between an implicit intent and an explicit intent?
How to convert DP to Pixel and Pixel to Dp?
What is Application?
How to avoid multiple button click at same time in android?
How to get complete address from latitude and longitude?
How can i comment inside xml file in android studio?
What is NetworkOnMainThread Exception?
How to Generate signed apk with android studio
Invoke-customs are only supported starting with android 0 --min-api 26
How to copy database from assets folder in android using kotlin
How do i load image from drawable folder in Jetpack Compose?
Explain Fragment Life Cycle
How to check Android version?
Permission denied for window type 2010 in Marshmallow device
FragmentPagerAdapter deprecated, Since API 27.1.0 FragmentPagerAdapter is deprecated.
What happens next when the device switches between portrait and landscape?
Fix Duplicate Files in APK Build.gradle Issue - RRutors
What is Context?
Check List for Generate Signed APK Android
Set Activity to Fullscreen Mode in Android - RRutors
How do I generate random numbers in Dart?
How to stop EditText focus at Activity startup in Android?
Add Jar/Library Files as Dependency in Android Studio
Fix Error: Use JsonReader.setLenient(true) for Malformed JSON