Picasso – powerful image downloading and caching library for Android.
Images add much-needed context and visual flair to Android applications. Picasso allows for hassle-free image loading in your application—often in one line of code!
ProGuard rules for Picasso
Obfuscating code that performs reflection may cause of error. ProGuard will analyze code to find unused classes, and attributes automatically. Add the next rules to your proguard-rules.pro configuration file.
# Picasso -dontwarn com.squareup.okhttp.**
For more information about please see Picasso website.