android libs calculated before libs are populated?

Question

this is a weird one. i have a -pre-compile target in my custom_rules.xml. in here, some JARs get copied into the libs folder.

if i do a clean build, it fails at runtime because those libraries do not get included in the .apk. looking at the output of ant -v ..., Dx is not processing those libs. so, while the project is being compiled against against those libraries, they are not included at the Dx phase.

if i subsequently do a non-clean ant debug, everything is fine, as the JARs copied by -pre-compile were already there at the start of the build.

any ideas what i'm doing wrong?

Jeffrey Blattman · Accepted Answer · 2012-06-21T22:23:41.443

i eventually figured this out by painstakingly adding echo statements to the .../tools/ant/build.xml from the SDK.

the path that includes the libraries in .../libs for Dx is defined in the -setup task. this is in the chain before -pre-compile or -pre-build, so if you copy JARs into your .../libs folder at either of those points, it's too late.

i ended up overriding the -setup task, as so,

  <target name="-setup" depends="-prepare-libs, android_rules.-setup"/>

  <target name="-prepare-libs">
    ... build / copy libs in to .../libs here
  </target>

note the syntax for calling through to the overridden -setup task ... the project name defined in the project tag appended with the task name, as defined in the build.xml imported from the SDK.

android libs calculated before libs are populated?

1 Answers1