使用意图在jar中启动新活动时发生java.lang.NoClassDefFoundError

主项目依赖于名为'sf'的库。

在库 '科幻'，使用意向，开始新的activeity使用意图在jar中启动新活动时发生java.lang.NoClassDefFoundError

import com.sf.proxy.MainActivity; 
public void login(Activity context) { 
    Intent intent = new Intent(context,MainActivity.class); 
    context.startActivity(intent); 
}

我得到了一个异常说：

02-06 10:07:58.198: D/AndroidRuntime(9770): Shutting down VM 
    02-06 10:07:58.198: W/dalvikvm(9770): threadid=1: thread exiting with uncaught exception (group=0xa6251288) 
    02-06 10:07:58.198: E/AndroidRuntime(9770): FATAL EXCEPTION: main 
    02-06 10:07:58.198: E/AndroidRuntime(9770): java.lang.IllegalStateException: Could not execute method of the activity 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at android.view.View$1.onClick(View.java:3591) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at android.view.View.performClick(View.java:4084) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at android.view.View$PerformClick.run(View.java:16966) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at android.os.Handler.handleCallback(Handler.java:615) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at android.os.Handler.dispatchMessage(Handler.java:92) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at android.os.Looper.loop(Looper.java:137) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at android.app.ActivityThread.main(ActivityThread.java:4745) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at java.lang.reflect.Method.invokeNative(Native Method) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at java.lang.reflect.Method.invoke(Method.java:511) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at dalvik.system.NativeStart.main(Native Method) 
    02-06 10:07:58.198: E/AndroidRuntime(9770): Caused by: java.lang.reflect.InvocationTargetException 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at java.lang.reflect.Method.invokeNative(Native Method) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at java.lang.reflect.Method.invoke(Method.java:511) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  at android.view.View$1.onClick(View.java:3586) 
    02-06 10:07:58.198: E/AndroidRuntime(9770):  ... 11 more 
    02-06 10:07:58.198: E/AndroidRuntime(9770): Caused by: java.lang.NoClassDefFoundError: com.sf.proxy.MainActivity

的Manifest.xml

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.sample"> 

    <supports-screens 
     android:anyDensity="true" 
     android:largeScreens="true" 
     android:normalScreens="true" /> 
    <application 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme"> 
     <activity 
      android:name="com.sf.proxy.MainActivity" 
      android:configChanges="orientation|screenSize|keyboardHidden" 
      android:screenOrientation="sensor" 
      android:theme="@android:style/Theme.Translucent.NoTitleBar"> 
     </activity> 
    ......

我知道这个例外意味着什么，所以首先我看着罐子里面e，和“失踪”的课程确实存在。所有人都经历过这种情况？提前致谢。

来源

2017-02-06 zsounder