Settings Panels as a dialog have a default animation for entering the
screen, but Slices complicate the animation. While the dialog enters the
screen, Slices begin to bind, thus changing the height of the dialog as
it enters, causing perceived bounce / jank in the animation.
This CL is cherry-picked/based on ag/6671083 but do the following modification:
(See the original commit message for the whole concept)
When trying to load all the Slices, there are few possible situations:
1. Slice starts loading slowly, starting at state LOADED_NONE
2. Slice is loading in progress, having state LOADED_PARTIAL
3. Slice is loaded, but there's error return from the Slice data (We don't
need to show the Slice in this case)
4. Slice is loaded, progress to state LOADED_ALL
5. Slice starts from state LOADED_NONE, but never progress to the next state
because it crashes at setting backend.
Notice that there are two cases that the state will stay at LOADED_NONE and
we can't distinguish them.
Hence, we decide to do the following:
If Slice is with error (case 3) we remove the slice from the list and mark it
loaded.
If Slice is loaded with LOADED_ALL (case 4, which is the ideal case), we mark
it as loaded.
In the other cases, we fire a handler to mark the slice loaded anyway after
250ms timeout.
When all the slices are marked loaded (which should happen after 250ms timeout,
we will animate the panel out. Although there might be slices which are still
partial loaded, we can still have the slice in the panel once it is ready.
The panel might bounce/jank in this case, but at least it will still showing
correctly, and should show up smoothly in most cases.
The solution to this problem is twofold:
1. Load all Slices first
2. Create a custom animation to draw the panel once the recyclerview has
been laid out.
Test: Manual/Visual inspection
Test: make -j40 RunSettingsRobotests
Bug: 123942159
Change-Id: I639a707aa4ba3f906bd6f9752c92727aaba28142
The NFC Slice would jank on enable and disable, because of the
intent filter it registered with SysUI. The intent filter would
broadcast an update for four states:
1) On
2) Off
3) Turning On
4) Turning off
The first two caused no problems. The third and fourth caused jank,
since when clicked, the switch in the NFC slice would turn on / off
asynchronously - that is, it turned on or off based on the previous
state of the switch, rather than on the actual value of NFC. It does
this to feel fluid in the app in which it is rendered.
From the off state, the order of events is:
1. Switch clicked
2. Switch animates on
2. Background intent is fired to settings to turn on Nfc (happens at
the same time as animation)
3. Settings calls the NFC enable API
4. A broadcast for Turning On is sent
5. The receiver in SysUI gets the broadcast and forwards it to settings
6. Settings tells the Slice to make sure it is up to date
7. The Slice checks for the current value - IMPORTANTLY - which is
currently off, it is only in the process of being enabled.
8. The Slice flips back off
9. Nfc finishes getting enabled in the background
10. The framework pushes the NFC ON broadcast
11. SysUI gets the broadcast, and forwards it to settings
12. Settings tells the slice to update
13. The slice checks again and finds that NFC is on, flipping on.
This CL creates a new background slice worker for NFC and registers
the intent filter there, rather than in SysUI. When the background
worker gets the broadcast, it checks if it is in state 3/4, and if so,
it drops the update silently.
Fixes: 115737701
Test: robotests
Change-Id: I17043828ad3a67a2a5acdf5c75d9cc51ff7e91d0
Establish the Activity which hosts Settings panels through the
PanelFragment. The Activity's purpose is to validate the intent
data coming in, including:
- Called with startActivityForResult (so we can log who is calling)
- Intent has the proper intent extra to link to a Panel
The fragment takes the Panelable data and builds a Settings Panel.
Each panel will have:
- Title
- List of Slices
- Link to underlying content
The Panelable interface is created to provide all of those datums, and
the new FetureProvider provides the Panelables by linking them with
keys. The keys will eventually become public APIs with CTS tests.For
now, we store them locally.
I included an exmaple panel, the InternetConnectivityPanel which
currently shows Wifi and Airplane mode.
Screenshot: https://screenshot.googleplex.com/c6sv7ZzQ5OJ
Bug: 117804089
Test: make -j40 RunSettingsRobotest
Test: Manual app
Change-Id: I1932f7179cc32088acd6413a736901ddf9651892
