Android When Is Onrestoreinstancestate Called

Next time when you start your activity onRestoreInstanceState will be called So if you are in your activity and you hit Back button on the device your activity is finish ed and next time you start your app it is started again it sounds like re-created isnt it but this time without saved state because you intentionally exited it when you hit Back button. If I click the BACK button on the emulator it goes back to the login screen and everything is populated onRestoreInstanceState is not called.

When Exactly Are Onsaveinstancestate And Onrestoreinstancestate Called Stack Overflow

Saving a UI state in the android app is very important UI state to remain the same but the system destroys the activity.

Android when is onrestoreinstancestate called. When rotating device use onSaveInstanceState save some important data and after rotation read them in onRestoreInstanceState. OnSaveInstanceState Bundle Called to retrieve per-instance state from an activity before being killed so that the state can be restored in OnCreate Bundle or OnRestoreInstanceState Bundle the Bundle populated by this method will be passed to both. This method is called after OnStart when the activity is being re-initialized from a previously saved state given here in savedInstanceState.

Right after onRestoreInstanceState Bundle was called with a bundle that had the correct keyvalues. When I navigate away from the login Activity its onSaveInstanceState gets called and the State is written. Because according to diagrams onSaveInstanceState is called after onDestroyView I use onSaveViewState to save data to field and use it later in onSaveInstanceState.

To answer your question have a look at the android doc. According to the below diagram onSaveInstanceState will be called beforeafter the onStop method and onRestoreInstanceState will be called in between onStart and on onResume. This varies from Android version to version.

OnSaveInstanceState method gets called typically beforeafter onStop is called. In my case onRestoreInstanceState was called when the activity was reconstructed after changing the device orientation. When onSaveInstanceState is called in fragmentIt will be called when the user changes configuration eg rotates the screen if Android believes that the activity is at risk of being destroyed while still being reachable on the stack and perhaps a few other cases.

To answer your question have a look at the android doc. The values are stored in the form of a key-value pair. This varies from Android version to version.

Lets look at each of them separately. One of the things that I save in my package is quite large a bitmap image of 500×1000 pixels. In the older versions it used to get before onStop.

When I removed this from my Bundle everything else was saved the onCreate method was called from the Bundle and onRestoreInstanceState was also called. To improve user experience and handle it system behavior you can use ViewModel object onSaveInstanceState method and local. Inside this method we save the important values in the Bundle in the form of key value pairs.

OnSaveInstanceState method gets called typically beforeafter onStop is called. They are used to save and retrieve values. OnRestoreInstanceStateBundle PersistableBundle This is the same as OnRestoreInstanceStateBundle but is called for activities created with the attribute PersistableMode set to persistAcrossReboots.

OnSaveInstanceState method gets called typically beforeafter onStop is called. OnCreate Bundle was called first but the bundle didnt have the keyvalues I set with onSaveInstanceState Bundle.

Visual Aids Of Android Activity Life Cycle En Proft Me