问题
I have an Android app which uses Google Volley as my download broker. I just tried to use ProGuard to obfuscate the code, and find out the volley download starts failing at runtime.
Here's my ProGuard config:
-keep class android.support.v4.app.** { *; }
-keep interface android.support.v4.app.** { *; }
-keep class com.actionbarsherlock.** { *; }
-keep interface com.actionbarsherlock.** { *; }
-keep class com.android.volley.** { *; }
-keep interface com.android.volley.** { *; }
-keepattributes *Annotation*
-dontwarn org.apache.**
and here is the error I saw in the code:
Async download FAILED. Exception message: The chosen LogFactory implementation does not extend LogFactory. Please check your configuration. (Caused by java.lang.ClassCastException: The application has specified that a custom LogFactory implementation should be used but Class 'org.apache.commons.logging.impl.LogFactoryImpl' cannot be converted to 'a.a.a.b.c'. Please check the custom implementation. Help can be found @http://commons.apache.org/logging/troubleshooting.html.)
I was wondering if I did some proguard config caused some dependency problem. Please help out.
回答1:
The Apache logging library uses some reflection on its log factories. Keeping their names should be sufficient:
-keep class org.apache.commons.logging.**
Side-note on your configuration: -keep class ..... always implies -keep interface ....., so you can leave out the latter.
来源：https://stackoverflow.com/questions/21816643/volley-seems-not-working-after-proguard-obfuscate