Improve the performance of displaying preference.

    - Set a variable to record the status then replace getAvailabilityStatus() with it.

Test: manual test, use command to run MobileNetworkSettings and record it.
Bug: 154061428
Merged-In: Ia13a75a3821bb6c17d0dfeffb5043f47b60adf61
Change-Id: Ia13a75a3821bb6c17d0dfeffb5043f47b60adf61
4 files changed