Gradle project sync failed on release proguard settings

[ghost]

Error: Error:(56, 0) Cannot convert the provided notation to a File or URI: [./proguard-rules/android-support-rules.pro, ./proguard-rules/autovalue-rules.pro, ./proguard-rules/okhttp3-rules.pro, ./proguard-rules/picasso-rules.pro, ./proguard-rules/retrofit2-rules.pro, ./proguard-rules/retrolambda-rules.pro, ./proguard-rules/rxjava2-rules.pro, ./proguard-rules/okio-rules.pro, ./proguard-rules/picasso-rules.pro]. The following types/formats are supported:

• A String or CharSequence path, for example 'src/main/java' or '/usr/include'.
• A String or CharSequence URI, for example 'file:/usr/include'.
• A File instance.
• A URI or URL instance. Open File

Line:
proguardFiles getDefaultProguardFile('proguard-android.txt'), releaseProguardFiles

P.S. If comment this line build work :)

Thanks

Ubuntu 16.04

[peter-tackage]

This occurs when using classpath 'com.android.tools.build:gradle:2.2.0', it behaves correctly using 2.1.3.

[peter-tackage]

We need to define a solution for abstractly defining a list of Proguard file which works on the latest Gradle build.

[ghost]

Hmmm I use 2.2.1

[peter-tackage]

My guess is that the API changed slightly after 2.1.3 which has broken it for us. Stick with 2.1.3 for now.