相关疑难解决方法(0)

我正在尝试使用ParseFacebookUtils库登录Facebook并且它运行良好,但是当我启用Proguard文件时,我在Facebook登录活动启动时遇到此异常:

Fatal Exception: java.lang.RuntimeException: Unable to start activity ComponentInfo{my.package.name/com.facebook.FacebookActivity}: java.lang.NullPointerException
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2413)
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2471)
       at android.app.ActivityThread.access$900(ActivityThread.java:175)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1308)
       at android.os.Handler.dispatchMessage(Handler.java:102)
       at android.os.Looper.loop(Looper.java:146)
       at android.app.ActivityThread.main(ActivityThread.java:5602)
       at java.lang.reflect.Method.invokeNative(Method.java)
       at java.lang.reflect.Method.invoke(Method.java:515)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
       at dalvik.system.NativeStart.main(NativeStart.java)
Caused by java.lang.NullPointerException
       at java.lang.Enum$1.create(Enum.java:43)
       at java.lang.Enum$1.create(Enum.java:35)
       at libcore.util.BasicLruCache.get(BasicLruCache.java:54)
       at java.lang.Enum.getSharedConstants(Enum.java:209)
       at java.lang.Enum.valueOf(Enum.java:189)
       at com.facebook.login.LoginBehavior.valueOf(LoginBehavior.java:26)
       at com.facebook.login.LoginClient$Request.(LoginClient.java)
       at com.facebook.login.LoginClient$Request.(LoginClient.java)
       at com.facebook.login.LoginClient$Request$1.createFromParcel(LoginClient.java:2521)
       at android.os.Parcel.readParcelable(Parcel.java:2111)
       at android.os.Parcel.readValue(Parcel.java:2020)
       at android.os.Parcel.readArrayMapInternal(Parcel.java:2321)
       at android.os.Bundle.unparcel(Bundle.java:249)
       at android.os.Bundle.getString(Bundle.java:1118)
       at android.content.Intent.getStringExtra(Intent.java:5145)
       at com.google.android.gms.analytics.Tracker$zza.zziJ(Unknown Source:4000)
       at com.google.android.gms.analytics.GoogleAnalytics.isInitialized(Unknown Source)
       at com.google.android.gms.analytics.GoogleAnalytics$zzb.onActivityStarted(Unknown Source)
       at android.app.Application.dispatchActivityStarted(Application.java:219)
       at android.app.Activity.onStart(Activity.java:1087) …

我有一个Android应用程序,它使用Google Volley作为我的下载经纪人.我只是试图使用ProGuard来混淆代码,并发现凌空下载开始在运行时失败.

这是我的ProGuard配置:

-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.**

这是我在代码中看到的错误:

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 …