BluSmart Android Developer Interview Questions and Answers

Fragment add vs replace lifecycle methods

• When using add, the fragment's lifecycle methods are called but the view is not recreated

• When using replace, the fragment's view is recreated and its lifecycle methods are called

• Add is useful for retaining the fragment's state, while replace is useful for completely replacing the fragment

Light weight operations are simple and quick, heavy weight operations are complex and time-consuming.

• Light weight operations are typically simple and quick to execute.

• Heavy weight operations are usually complex and time-consuming.

• Examples of light weight operations include basic arithmetic calculations.

• Examples of heavy weight operations include complex algorithms or database queries.