Proguard error with fresco

问题

I am using ProGuard and when I am running the project in release configuration, I get the following error:

Warning:com.facebook.imagepipeline.bitmaps.DalvikBitmapFactory: can't find referenced field 'android.graphics.Bitmap$Config BITMAP_CONFIG' in program class com.facebook.imagepipeline.nativecode.Bitmaps

I searched everywhere but couldn't find any clue to solve it. I have updated my proguard-rules.pro with what is given in the fresco's docs page.

Fresco dependency:

compile 'com.facebook.fresco:fresco:0.8.1+'
compile 'com.facebook.fresco:imagepipeline-okhttp:0.8.1+'

回答1:

Hi，According from the error

 Warning:com.facebook.imagepipeline.bitmaps.DalvikBitmapFactory: can't find referenced field 'android.graphics.Bitmap$Config BITMAP_CONFIG' in program class com.facebook.imagepipeline.nativecode.Bitmaps

It show that the warning com.facebook.imagepipeline.bitmaps.** and so on. my solution is adding the below words to the proguard-rules.pro file

 -dontwarn com.facebook.imagepipeline.**

I have tried this, and it seems be ok ! be sure you open the build.gradle file ,

android{
   ...
   buildTypes {
      ...
      release{
         ...
         minifyEnabled true
         ...
      }
}

来源：https://stackoverflow.com/questions/33867642/proguard-error-with-fresco