Bonian Chen b8491032d7 [DataUsage] Adjusting the control of display sequence
Showing a usage graph before end of statistic would lead to incorrect
height of usage graph, and another update would lead to layout moved a
little bit.

This change tries to improve it through:
1. Start the loading animation earlier, and stop animation when
   statistics loaded.
   (Only effective when UI re-create.)
2. Update the UI only when statistics are ready.

Bug: 187019210
Test: robotest ChartDataUsagePreferenceTest DataUsageListTest
Change-Id: Ic83f2422b6c6d55948110d652ee24234f43b6445
2022-03-16 20:29:53 +08:00
2019-04-04 12:49:15 -07:00
2022-02-16 18:01:42 +08:00
2019-11-25 20:28:35 +09:00
2020-02-03 01:03:46 +00:00
Description
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3.1 GiB
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