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 convert milli seconds to hours, minutes and seconds in Android?
How to reduce APK package size?
FCM Not Receiving Notifications in Android - RRutors
What is the Different Between val and var in Kotlin?
How to get a contact image using a phone number in android?
Open PDF in Google Drive with Intent in Android - RRutors
What are the notifications available in android?
Emulator: emulator: ERROR: Can't find 'Linux version ' string in kernel image file: Andr
What is NetworkOnMainThread Exception?
FragmentPagerAdapter deprecated, Since API 27.1.0 FragmentPagerAdapter is deprecated.
How to convert DP to Pixel and Pixel to Dp?
What is Android?
What is Application?
How to Get bitmap from drawable: Android
How To Set Text Color Programmatically Android TextView?
ERR_ACCESS_DENIED in Android Webview with sdk 30
Android Studio project R can't find
How to check Android version?
What is Android Fragments?
Fix Play Store Rejection Due to SMS Permission - RRutors
How to find Android Device UDID or unique ID?
What is ANR? How to avoid and resolve it?
Fix Duplicate Files in APK Build.gradle Issue - RRutors
How to save activity State in Android?
How do I check in SQLite whether a table exists?
Hide/Disable soft keyboard on Activity launch: Android
What is the difference between match_parent and fill_parent?
What is "shared preferences" in Android ?
How to stop EditText focus at Activity startup in Android?
INSTALL_FAILED_INVALID_APK: Split lib_slice_9_apk was defined multiple times. It is possible that th
Decompile APK Files: How to Get Source Code - RRutors Guide
How to install/ uninstall apk by command line ADB
How can i comment inside xml file in android studio?
Key Points to remember while develop the Android Application.
Check List for Generate Signed APK Android
How to Exit android app on back pressed?
How to avoid multiple button click at same time in android?
Add Jar/Library Files as Dependency in Android Studio
What is Context?
How to get complete address from latitude and longitude?