Previously, display lists were used only if hardware acceleration
was enabled for an application (hardwareAccelerated=true) *and* if
setDrawingCacheEnabled(true) was called. This change makes the framework
use display lists for all views in an application if hardware acceleration
is enabled.
In addition, display list renderering has been optimized so that
any view's recreation of its own display list (which is necessary whenever
the visuals of that view change) will not cause any other display list
in its parent hierarchy to change. Instead, when there are any visual
changes in the hierarchy, only those views which need to have new
display list content will recreate their display lists.
This optimization works by caching display list references in each
parent display list (so the container of some child will refer to its
child's display list by a reference to the child's display list). Then when
a view needs to recreate its display list, it will do so inside the same
display list object. This will cause the content to get refreshed, but not
the reference to that content. Then when the view hierarchy is redrawn,
it will automatically pick up the new content from the old reference.
This optimization will not necessarily improve performance when applications
need to update the entire view hierarchy or redraw the entire screen, but it does
show significant improvements when redrawing only a portion of the screen,
especially when the regions that are not refreshed are complex and time-
consuming to redraw.
Change-Id: I68d21cac6a224a05703070ec85253220cb001eb4
1. Views may setSystemUiVisibility() to recommend that
the system chrome (status bar or other UI) show or hide
itself. (This functionality was previously available only
via the FLAG_FULLSCREEN window flag for some SystemUI
implementations.)
2. Views may register a OnSystemUiVisibilityChangedListener
on a view, and find out when the system UI actually
appears or disappears, allowing apps to coordinate the
appearance of their own UI if desired.
Bug: 3241144
Change-Id: Ia1758d94099182d49a1e3688ea2738ae4995b829
Bug 3374144
The fix in https://android-git.corp.google.com/g/#change,91880 is not
sufficient. An updated adapter needs to be able to force an update of
the poup result list.
Addded a flag that prevents the popup from being re-opened when it has
previously been closed by a user action.
Change-Id: I45fab056c8ebd6dc4317430213f2bc37b51b79e3
And also fix#3343369: EGL_BAD_DISPLAY and/or broadcast intent
TIME_SET before boot completion
And a few more tweaks to animations to keep the wallpaper displayed
when needed.
And make more use of the drag and drop "rotation disabled" thing to
also use it while animating the screen rotation, since if we try to
start a new rotation while doing the animation we end up with a mess.
Change-Id: I373af305a6e23a92835abed96229a83e173f67ce
The activity manager was not performing the layout pass on the new window,
because its app token was still hidden, because the activity manager / window
manager were still waiting for it to be ready to show.
Just ignore whether the app token is hidden for this case.
Also fixes some problems with animations, and tweaks the ViewConfiguration
values for xlarge screens.
Change-Id: Icbe9c77ba8127d1e02df2d6f27b8e86ec842e50a
UsbManager:
- is now a service retrievable via Context.getSystemService(Context.USB_SERVICE).
- provides support for returning a list all connected USB devices
- broadcasts ACTION_USB_DEVICE_ATTACHED and USB_DEVICE_DETACHED when devices
are added and removed from the USB host bus
UsbDevice:
- represents an attached USB device.
UsbInterface:
- represents an interface on a USB device
- devices may have multiple interfaces if they provide multiple
sets of functionality (for example, android phones typically have interfaces
for both USB mass storage and adb)
UsbEndpoint:
- represents an endpoint on a USB interface
- endpoints are used for sending or receiving data
(only in one or the other direction)
UsbRequest:
- encapsulates a send or receive request to be sent over an endpoint
Change-Id: Ieef3e434c62760770ea839070cf5eba1a705967a
Signed-off-by: Mike Lockwood <lockwood@android.com>
