发布版本的封闭代码之后。应用程序崩溃，出现以下错误。我在proguard-rules.po文件中保留了android支持库和网络类，但它在启动应用程序时给出了运行时异常。
java.lang.RuntimeException: Unable to instantiate application com.App: java.lang.RuntimeException: Stub!
at android.app.LoadedApk.makeApplication(LoadedApk.java:802)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5377)
at android.app.ActivityThread.-wrap2(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1545)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.RuntimeException: Stub!
at android.content.i.<init>(SourceFile:4)
at android.content.j.<init>(SourceFile:5)
at android.app.e.<init>(SourceFile:6) at com..App.<init>(SourceFile:21)
at java.lang.Class.newInstance(Native Method)
at android.app.Instrumentation.newApplication(Instrumentation.java:1007)
at android.app.Instrumentation.newApplication(Instrumentation.java:992)
at android.app.LoadedApk.makeApplication(LoadedApk.java:796)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5377)
at android.app.ActivityThread.-wrap2(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1545)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
以下是我在保留类应用程序中应用的规则。
> -keepattributes SourceFile,LineNumberTable
> -renamesourcefileattribute SourceFile
>
> ####### ButterKnife ########
>
> # Retain generated class which implement ViewBinder.
> -keep public class * implements butterknife.internal.ViewBinder { public <init>(); }
>
> # Prevent obfuscation of types which use ButterKnife annotations since the simple name
> # is used to reflectively look up the generated ViewBinder.
> -keep class butterknife.*
> -keepclasseswithmembernames class * { @butterknife.* <methods>; }
> -keepclasseswithmembernames class * { @butterknife.* <fields>; }
>
> -dontwarn butterknife.internal.Utils
>
> ####### Crashlytics 2.+ #######
>
> -keep class com.crashlytics.** { *; }
> -keep class com.crashlytics.android.**
>
> -keepattributes SourceFile, LineNumberTable, *Annotation*
>
> -printmapping mapping.txt
>
> -keep public class * extends java.lang.Exception
>
> ####### Retrofit ########
>
> -dontwarn retrofit2.**
> -keep class retrofit2.** { *; }
> -keepattributes Signature
> -keepattributes Exceptions
>
> -keepclasseswithmembers class * {
> @retrofit2.http.* <methods>; }
>
> -dontwarn okhttp3.**
>
> -dontwarn okio.**
>
> ####### GSON ########
>
> -keepattributes EnclosingMethod
>
> # Gson specific classes
> -keep class sun.misc.Unsafe { *; }
> -keep class com.google.gson.stream.** { *; }
>
> ####### Eventbus ########
>
> -keepattributes *Annotation*
> -keepclassmembers class ** {
> @org.greenrobot.eventbus.Subscribe <methods>; }
> -keep enum org.greenrobot.eventbus.ThreadMode { *; }
>
> # Only required if you use AsyncExecutor
> -keepclassmembers class * extends org.greenrobot.eventbus.util.ThrowableFailureEvent {
> <init>(java.lang.Throwable); }
>
>
> # firebase
> -dontwarn com.google.firebase.**
>
> #OSMDroid
> -dontwarn org.osmdroid.**
> -dontwarn com.github.mikephil.charting.charts.**
>
> -dontwarn android.**
> #-keep public class * extends android.app.Activity
> #-keep public class * extends android.app.Application
>
>
> ####### Support Libraries ########
>
> -dontwarn android.support.design.**
> -keep class android.support.design.** { *; }
> -keep interface android.support.design.** { *; }
> -keep public class android.support.design.R$* { *; }
>
> -dontwarn android.support.v7.**
> -keep class android.support.v7.** { *; }
> -keep interface android.support.v7.** { *; }
>
> -dontwarn android.support.v4.**
> -keep class android.support.v4.** { *; }
> -keep interface android.support.v4.** { *; }
>
> -keep public class android.support.v7.widget.** { *; }
> -keep public class android.support.v7.internal.widget.** { *; }
> -keep public class android.support.v7.internal.view.menu.** { *; }
>
>
> -keep public class * extends android.support.v4.view.ActionProvider {
> public <init>(android.content.Context); }
>
>
> -dontwarn org.apache.log4j.**
> -dontwarn javax.servlet.**
> -dontwarn org.xml.sax.**
> -dontwarn org.apache.log.**
> -dontwarn org.apache.avalon.**
>
> -dontwarn org.apache.commons.**
> -keep class org.apache.http.** { *; }
> -dontwarn org.apache.http.**
>
> -keep class android.support.v7.internal.** { *; }
> -keep interface android.support.v7.internal.** { *; }