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如果我不在我的项目上运行 pro-guard，一切都很好，但如果我运行 pro-guard 并在设备中安装 .apk，我会遇到上述错误。我尝试在 proguard-android.txt 文件中添加以下行
-keep public class twitter4j.conf.PropertyConfigurationFactory
-dontwarn twitter4j.**
但没有任何区别。
我正在使用 SDK 中的默认 proguard-android.txt 文件
并在 project.properties 中设置它，如下所示
proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
我看过this同一问题的链接，但无法理解，而且谷歌搜索对我帮助不大。
那么，有人能告诉我这里出了什么问题吗？
提前致谢
编辑:
删除 public 限定符后的 Logcat 错误:
04-18 12:05:25.425: E/AndroidRuntime(16405): FATAL EXCEPTION: main
04-18 12:05:25.425: E/AndroidRuntime(16405): java.lang.ExceptionInInitializerError
04-18 12:05:25.425: E/AndroidRuntime(16405): at twitter4j.b.a.h.<init>(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): at twitter4j.ap.a(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): at twitter4j.ap.<init>(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): at twitter4j.aq.<init>(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): at twitter4j.al.<init>(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): at twitter4j.ao.a(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): at twitter4j.ao.a(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): at com.mobinius.creativepad.c.f.<init>(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): at com.mobinius.creativepad.c.a.<init>(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): at com.mobinius.creativepad.android.OpenScreenActivity.e(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): at com.mobinius.creativepad.android.OpenScreenActivity.onClick(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): at android.view.View.performClick(View.java:4232)
04-18 12:05:25.425: E/AndroidRuntime(16405): at android.view.View$PerformClick.run(View.java:17298)
04-18 12:05:25.425: E/AndroidRuntime(16405): at android.os.Handler.handleCallback(Handler.java:615)
04-18 12:05:25.425: E/AndroidRuntime(16405): at android.os.Handler.dispatchMessage(Handler.java:92)
04-18 12:05:25.425: E/AndroidRuntime(16405): at android.os.Looper.loop(Looper.java:137)
04-18 12:05:25.425: E/AndroidRuntime(16405): at android.app.ActivityThread.main(ActivityThread.java:4921)
04-18 12:05:25.425: E/AndroidRuntime(16405): at java.lang.reflect.Method.invokeNative(Native Method)
04-18 12:05:25.425: E/AndroidRuntime(16405): at java.lang.reflect.Method.invoke(Method.java:511)
04-18 12:05:25.425: E/AndroidRuntime(16405): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
04-18 12:05:25.425: E/AndroidRuntime(16405): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
04-18 12:05:25.425: E/AndroidRuntime(16405): at dalvik.system.NativeStart.main(Native Method)
04-18 12:05:25.425: E/AndroidRuntime(16405): Caused by: java.lang.AssertionError: java.lang.NoSuchMethodException: <init> [interface twitter4j.b.a.d]
04-18 12:05:25.425: E/AndroidRuntime(16405): at twitter4j.b.a.e.<clinit>(Unknown Source)
04-18 12:05:25.425: E/AndroidRuntime(16405): ... 22 more
04-18 12:05:25.425: E/AndroidRuntime(16405): Caused by: java.lang.NoSuchMethodException: <init> [interface twitter4j.b.a.d]
04-18 12:05:25.425: E/AndroidRuntime(16405): at java.lang.Class.getConstructorOrMethod(Class.java:460)
04-18 12:05:25.425: E/AndroidRuntime(16405): at java.lang.Class.getConstructor(Class.java:431)
04-18 12:05:25.425: E/AndroidRuntime(16405):