A workaround for Android "L" Okio packaging problem. Place all of the following in a `libs/` folder.

README.md

JarJar'd OkHttp Dependencies

Due to a bug in the packaging of Android OS "L", dependencies which reference Okio need to be repackaged.

For more information see square/okhttp#967

Usage

Download jarjar-1.4.jar and place it in this directory.

Download OkHttp, Okio, and optionally OkHttp UrlConnection and place it in this directory.

The contents of the folder should look like:

-rw-r--r--  1 you  you   118K Jul 30 12:07 jarjar-1.4.jar
-rw-r--r--  1 you  you    34B Jul 30 12:08 jarjar.rules
-rwxr-xr-x  1 you  you   175B Jul 30 13:37 jarjar.sh
-rw-r--r--  1 you  you   255K Jul 30 12:09 okhttp-2.0.0.jar
-rw-r--r--  1 you  you    30K Jul 30 12:09 okhttp-urlconnection-2.0.0.jar
-rw-r--r--  1 you  you    51K Jul 30 12:09 okio-1.0.0.jar

Now run the jarjar.sh script and you should see the repackaged jars:

-rw-r--r--  1 you  you   256K Jul 30 13:37 repackaged-okhttp-2.0.0.jar
-rw-r--r--  1 you  you    30K Jul 30 13:37 repackaged-okhttp-urlconnection-2.0.0.jar
-rw-r--r--  1 you  you    52K Jul 30 13:37 repackaged-okio-1.0.0.jar

Include these in your build.gradle with:

dependencies {
  compile fileTree(dir: 'libs', include: 'repackaged-*.jar')
}

jarjar.rules

rule okio.** com.squareup.okio.@1

jarjar.sh

#!/bin/bash

set -ex

rm repackaged-*.jar 2> /dev/null
for jar in `ls *.jar | grep -v 'jarjar-'`; do
  java -jar jarjar-* process jarjar.rules "$jar" "repackaged-${jar}"
done

jarjar.sh was failing for me on MacOS without any existing repackaged jar files in the directory, had to replace rm repackaged-*.jar 2> /dev/null with rm -f repackaged-*.jar

I get this error
Error:Execution failed for task ':app:dexDebug'.

com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home/bin/java'' finished with non-zero exit value 2