- Since the "Mobile-Data Details Settings" (NETWORK_OPERATOR_SETTINGS) will query Carrier-Config around 70 times during launching, use the Carrier-Config cache to reduce 69 times to speed up the launching time.
- It takes about 3ms to query a Carrier-Config each time.
- Create a singleton class to share the Carrier-Config for all
sub-settings.
Bug: 204135235
Test: manual test
atest -c ApnPreferenceControllerTest \
AutoSelectPreferenceControllerTest \
BackupCallingPreferenceControllerTest \
CarrierConfigCacheTest \
CarrierPreferenceControllerTest \
CarrierSettingsVersionPreferenceControllerTest \
DataServiceSetupPreferenceControllerTest \
Enable2gPreferenceControllerTest \
EnabledNetworkModePreferenceControllerTest \
Enhanced4gBasePreferenceControllerTest \
MobileNetworkUtilsTest \
NetworkProviderBackupCallingGroupTest \
NrAdvancedCallingPreferenceControllerTest \
PreferredNetworkModePreferenceControllerTest \
TelephonyTogglePreferenceControllerTest \
WifiPickerTrackerHelperTest
make RunSettingsRoboTests \
ROBOTEST_FILTER=ContactDiscoveryPreferenceControllerTest
make RunSettingsRoboTests \
ROBOTEST_FILTER=VideoCallingPreferenceControllerTest
Change-Id: I26f9ac115a754910b5d59e820703f1a0e701bb7f
