adjust methods for preinstall

N/A

Change-Id: I41d059113fe5fa6f97d62b98d592116875285856
(cherry picked from commit 72b509981c4d8b8badee7910289c1ccf1250634a)
add ingore apps for cust variant

Change-Id: I53a474b89a2e7dbd5f37856a184600a0fed43c89
Make switching fonts without reboot.

Change-Id: Iad793fcc8e954c8774d3ff2eabd46707faecb262
Signed-off-by: mochangming <mochangming@xiaomi.com>