AAPT has traditionally assigned resource IDs to public attributes,
and then followed those public definitions with private attributes.
--- PUBLIC ---
| 0x01010234 | attr/color
| 0x01010235 | attr/background
--- PRIVATE ---
| 0x01010236 | attr/secret
| 0x01010237 | attr/shhh
Each release, when attributes are added, they take the place of the private
attributes and the private attributes are shifted down again.
--- PUBLIC ---
| 0x01010234 | attr/color
| 0x01010235 | attr/background
| 0x01010236 | attr/shinyNewAttr
| 0x01010237 | attr/highlyValuedFeature
--- PRIVATE ---
| 0x01010238 | attr/secret
| 0x01010239 | attr/shhh
Platform code may look for private attributes set in a theme. If an app
compiled against a newer version of the platform uses a new public
attribute that happens to have the same ID as the private attribute
the older platform is expecting, then the behavior is undefined.
We get around this by detecting any newly defined attributes (in L),
copy the resource into a -v21 qualified resource, and delete the
attribute from the original resource. This ensures that older platforms
don't see the new attribute, but when running on L+ platforms, the
attribute will be respected.
We still need to address this problem in the platform moving forward,
as this will only help us in the transition from pre L to L.
Bug:17520380
Change-Id: Ia2a985798b50006c21c7c3431d30d9598f27cd91
A ResTable_map entry has a name attribute, which
could be a dynamic reference if it comes from
a shared library. It was not being patched with
the correct package id.
Bug:16795890
Change-Id: Ia8df6a943269b2fefb2132c3ed74eb1997d7701b
This change allows the developer to add a base package for
which to build a feature split. The generated resource types
will begin after the base APK's defined types so as not
to collide or override resources.
Multiple features can be generated by first choosing an
arbitrary order for the features. Then for each feature,
the base APK and any preceding features are specified
with the --feature-of flags.
So with a base APK 'A' and features, 'B', and 'C',
'B' would be built with
aapt package [...] --feature-of A [...]
and 'C' would be built with
aapt package [...] --feature-of A --feature-of B [...]
Change-Id: I1be66e3f8df9a737b21c71f8a93685376c7e6780
In order to support APK split features, the resource
table needs to support loading multiple resource
tables with the same package but potentially new set
of type IDs.
This adds some complexity as the type ID space changes
from dense and ordered to potentially sparse.
A ByteBucketArray is used to store the type IDs in
a memory efficient way that allows for fast retrieval.
In addition, the IDMAP format has changed. We no longer
need random access to the type data, since we store the
types differently. However, random access to entries of
a given type is still required.
Change-Id: If6f5be680b405b368941d9c1f2b5d2ddca964160
