Handle Activity State Changes using onSaveInstanceState | Android Tutorial 2020
📱 Handle Activity State Changes | Activity state changes using onSaveInstanceState and onRestoreInstanceState. Preserving and restoring an activity’s UI state in a timely fashion across system-initiated activity or application destruction is a crucial part of the user experience. In these cases the user expects the UI state to remain the same, but the system destroys the activity and any state stored in it.
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So, when you rotate your device and the screen changes orientation, Android usually destroys your application’s existing Activities and Fragments and recreates them.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState != null) {
counter = savedInstanceState.getInt("key_counter", 0);
} else {
counter = 0;
}
txtTotal.setText("" + counter);
}
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📌 Available Resources Links:
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📜 References:
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You might be asking yourself these below questions:
How to save Activity State on rotation?
How to screen orientation change without losing data?
How to save activity state when orientation changes in android?
How to save activity state in android?
How to use onSaveInstanceState and onRestoreInstanceState?
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