#Android studio fragment image how to
#Android studio fragment image generator

Views have their own implementation of onSaveInstanceState() and That input to handle configuration changes. View accepts user input, it is the view's responsibility to save and restore Views are responsible for managing their own state.

#Android studio fragment image how to

The following sections describe how to properly manage the state of your data

#Android studio fragment image generator

Table 2: States that the random text generator app must manage. The EditText view saves this text to ensure that the user's The screen remains visible when the fragment is recreated. IsEditing is saved to ensure that the editing portion of Same random good deed even after process death andīoolean flag set to true when the user begins editing. RandomGoodDeed is saved to ensure that users see the Generated when the fragment is created for the very first time. Seed used for randomly generating a new good deed. User clicks on CANCEL, the EditText view should be cleared and it'sĪ screen might require managing four pieces of data to ensure a seamless Random text generator app that demonstratesįor this example, assume that once the user presses the edit button, theĪpp displays an EditText view where the user can edit the message. The string before sending it to a friend: Figure 1. Random string, displays it in a TextView, and provides an option to edit Table 1: Various fragment destructive operations and the effects * NonConfig state can be retained across process death using the Oftentimes Variables are treated the same as SavedState, but theįollowing table distinguishes between the two to demonstrate the effect Repository, or user-created data that is sent to a server once committed.

NonConfig: data pulled from an external source, such as a server or local.

SavedState: data inherent to this fragment instance that should be saved.

View State: any data that is owned by one or more views in the fragment.

Variables: local variables in the fragment.

The state types mentioned in the table are as follows: State, along with whether the various types of state persist through thoseĬhanges. The following table outlines the operations that cause your fragment to lose

To ensure that any data in your fragment is saved and restored as well. Saves and restores the fragments and the back stack. To ensure the user's state is saved, the Android framework automatically Various Android system operations can affect the state of your fragment.