How to Identify Deprecated Classes and Methods in Android Studio?

How can I find all deprecated classes and methods in my Android Studio project without searching manually through each file?

Finding deprecated classes and methods in an Android Studio project is a straightforward process when utilizing the built-in tools provided by the IDE. Instead of manually searching through each class, you can quickly identify deprecated code by leveraging Android Studio's search functionalities and inspection tools.

// Example of checking for deprecated annotations in Kotlin
@Deprecated("This method is deprecated, use newMethod() instead.")
fun oldMethod() { /* implementation */ }

Causes

• The project is updated to the latest Android APIs which introduce new methods and deprecate older ones.
• Multiple classes contain method calls that are marked as deprecated.

Solutions

• Utilize the 'Find in Path' feature of Android Studio to locate deprecated methods throughout the project.
• Change the code inspection settings to highlight deprecated methods and classes, allowing for easy identification as you code.
• Check the 'TODO' window in Android Studio, which may list deprecated method warnings if properly configured.

Mistake: Not enabling proper inspection settings in Android Studio.

Solution: Go to File > Settings > Editor > Inspections and ensure that 'Deprecated APIs usage' is checked.

Mistake: Overlooking the 'TODO' window which can display deprecation warnings.

Solution: Make sure to check the 'TODO' window frequently. You can even filter for specific tags.