加固后apk无法打开

android.view.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running?
        at android.view.ViewRootImpl.setView(ViewRootImpl.java:957)
        at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:381)
        at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:100)
        at android.app.Dialog.show(Dialog.java:420)
        at com.qihoo.util.ᵢˋ.run(SourceFile:31)
        at java.lang.Thread.run(Thread.java:764)

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