20df25e6b9
Root cause: Settings listens to four package-related broadcasts in order to refresh injected items because UI data may change. However, when the system is updating apps on the first boot, it triggers a burst of broadcasts. For each broadcast Settings will reload and then redraw all injected items, which leads to the flickering. Solution: 1. When Settings recieves a broadcast, check if there are already two reloading tasks to avoid redundant updates. 2. In the reloading task, check if any injected item is changed, added, or removed to notify categories changed. 3. Only refresh the UI when any of the changed items belongs to the current page. Bug: 166785977 Bug: 168309941 Test: manual, robotest Change-Id: I77745b60f84510554bff1870a5bb7a8013eab528