Reset Activity when phones back button is clicked

Is it possible to reset a activity to its normal state when a user clicks the back button from the previous page.

Use Case: On my main activity I have checkboxes and the user goes to the next activity using intent. That activity has a "Back to Main Page" button, but when the user just clicks the back button on the 开发者_如何学Pythonphone the checkboxes are already checked from the last time the user was on the page.

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If you want to reset only when returning from that activity then use startActivityForResult() and override onActivityResult.

If you want to reset everytime then reset in onResume()

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Move the code that sets the default state of the checkboxes from the onCreate() to onResume() method.