在我努力的过程中，我在我的项目中添加了两个版本的 androidplot。我意识到这会引起冲突，所以我尝试删除两者以重新开始，现在我得到了
02-11 22:50:10.769: E/AndroidRuntime(20299): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.cpdsessions.exercise_app/com.cpdsessions.exercise_app.ActivityLevelView}: android.view.InflateException: Binary XML file line #21: Error inflating class com.androidplot.xy.XYPlot
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1872)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1893)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.app.ActivityThread.access$1500(ActivityThread.java:135)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1054)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.os.Handler.dispatchMessage(Handler.java:99)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.os.Looper.loop(Looper.java:150)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.app.ActivityThread.main(ActivityThread.java:4385)
02-11 22:50:10.769: E/AndroidRuntime(20299): at java.lang.reflect.Method.invokeNative(Native Method)
02-11 22:50:10.769: E/AndroidRuntime(20299): at java.lang.reflect.Method.invoke(Method.java:507)
02-11 22:50:10.769: E/AndroidRuntime(20299): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
02-11 22:50:10.769: E/AndroidRuntime(20299): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
02-11 22:50:10.769: E/AndroidRuntime(20299): at dalvik.system.NativeStart.main(Native Method)
02-11 22:50:10.769: E/AndroidRuntime(20299): Caused by: android.view.InflateException: Binary XML file line #21: Error inflating class com.androidplot.xy.XYPlot
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
02-11 22:50:10.769: E/AndroidRuntime(20299): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:250)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.app.Activity.setContentView(Activity.java:1742)
02-11 22:50:10.769: E/AndroidRuntime(20299): at com.cpdsessions.exercise_app.ActivityLevelView.onCreate(ActivityLevelView.java:28)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1072)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1836)
02-11 22:50:10.769: E/AndroidRuntime(20299): ... 11 more
02-11 22:50:10.769: E/AndroidRuntime(20299): Caused by: java.lang.ClassNotFoundException: com.androidplot.xy.XYPlot in loader dalvik.system.PathClassLoader[/data/app/com.cpdsessions.exercise_app-1.apk]
02-11 22:50:10.769: E/AndroidRuntime(20299): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
02-11 22:50:10.769: E/AndroidRuntime(20299): at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
02-11 22:50:10.769: E/AndroidRuntime(20299): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.view.LayoutInflater.createView(LayoutInflater.java:471)
02-11 22:50:10.769: E/AndroidRuntime(20299): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:570)
02-11 22:50:10.769: E/AndroidRuntime(20299): ... 20 more
谁能告诉我如何清理这个吗？