mapping文件就是在对代码混淆以后,你用来查看混淆前和混淆后的对比文件. 一般用来查看线上的bug; java.lang.NullPointerException: Attempt to invoke virtual method 'void *****.online.ui.CustomWebView.d()' on a null object reference at *****.online.ui.ActivityOnlineHuaWei.a(SourceFile:616) at ***…