Window Leak in Activity Mileage

[seg-ha]

E/WindowManager( 4164):
E/WindowManager( 4164): android.view.WindowLeaked: Activity com.evancharlton.mileage.Mileage has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{52b4c7d4 V.E..... R.....I. 0,0-698,578} that was originally added here
E/WindowManager( 4164): at android.view.ViewRootImpl.(ViewRootImpl.java:346)
E/WindowManager( 4164): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:248)
E/WindowManager( 4164): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
E/WindowManager( 4164): at android.app.Dialog.show(Dialog.java:286)
E/WindowManager( 4164): at com.evancharlton.mileage.views.DateButton.showDialog(DateButton.java:54)
E/WindowManager( 4164): at com.evancharlton.mileage.views.DateButton.access$200(DateButton.java:19)
E/WindowManager( 4164): at com.evancharlton.mileage.views.DateButton$2.onClick(DateButton.java:42)
E/WindowManager( 4164): at android.view.View.performClick(View.java:4438)
E/WindowManager( 4164): at android.view.View$PerformClick.run(View.java:18422)
E/WindowManager( 4164): at android.os.Handler.handleCallback(Handler.java:733)
E/WindowManager( 4164): at android.os.Handler.dispatchMessage(Handler.java:95)
E/WindowManager( 4164): at android.os.Looper.loop(Looper.java:136)
E/WindowManager( 4164): at android.app.ActivityThread.main(ActivityThread.java:5001)
E/WindowManager( 4164): at java.lang.reflect.Method.invokeNative(Native Method)
E/WindowManager( 4164): at java.lang.reflect.Method.invoke(Method.java:515)
E/WindowManager( 4164): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
E/WindowManager( 4164): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
E/WindowManager( 4164): at dalvik.system.NativeStart.main(Native Method)