Step by Step: Auto-conversion for ARC

Do auto-conversion for ARC:

1. Open “XCode -> Preferences", tab “General". Check “Continue building after errors" (diagram 1)

2. Open “Edit -> Refactor -> Convert to Objective-C ARC…" (diagram 2)

3. If there is any “ARC readiness issues", fix it, until no more ARC readiness issues.

4. Do step 2 (conversion) again.

5. Confirm the comparison page. (diagram 3-5)

6. Finish. You may Build your project again and see the ARC conversion is done.