使用Proguard构建应用程序后崩溃

Question

我的应用已经构建并成功运行，然后我启用了Proguard，现在应用程序在启动时立即崩溃。没有构建错误，只有运行时/启动崩溃。我使用的是Android Studio 1.1.0。目标API 22，分14。

如何跟踪Proguard在启动时使应用程序崩溃的行为？我找到了输出文件的位置，但我不知道该找什么。我在网上搜索了几十个Proguard提示，但到目前为止没有任何帮助。以下是我的proguard.cfg：

-dontpreverify
-repackageclasses ''
-allowaccessmodification
-optimizations !code/simplification/arithmetic
-keepattributes *Annotation*,SourceFile,LineNumberTable,InnerClasses,Exceptions,EnclosingMethod
-renamesourcefileattribute SourceFile    

-dontwarn com.facebook.**
-dontwarn com.httpmime.**
-dontwarn com.parse.**

-keep class UserLoginTask
-keep class UserPasswordRecoveryTask
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class com.pictureplay.BitmapWorkerTask
-keep public class com.pictureplay.App
-keep public class com.pictureplay.DrawingView
-keep public class com.pictureplay.Exif_Reader
-keep public class com.android.vending.licensing.ILicensingService

-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}
-keep public class * extends android.os.AsyncTask<Void, Void, Boolean>
-keep class com.pictureplay.LoginActivity { *; }
-keep class com.pictureplay.LoginActivity$UserLoginTask { *; }
-keep class com.pictureplay.LoginActivity$UserPasswordRecoveryTask { *; }
-keepclassmembers class com.pictureplay.UserLoginTask**
-keepclassmembers class com.pictureplay.UserPasswordRecoveryTask** { *; }
-keepclasseswithmembernames class * {
    Boolean doInBackground(...);
    void onPostExecute*(...);
 }

-keepclasseswithmembernames class * {
    native <methods>;
}

-keepclassmembers public class * extends android.view.View {
   void set*(***);
   *** get*();
}

-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}

-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet);
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet, int);
}

-keepclassmembers class * extends android.content.Context {
   public void *(android.view.View);
   public void *(android.view.MenuItem);
}

-keepclassmembers class * implements android.os.Parcelable {
    static android.os.Parcelable$Creator CREATOR;
}

-keepclassmembers class **.R$* {
    public static <fields>;
}

-assumenosideeffects class android.util.Log {
    public static *** d(...);
}