程序崩溃了！ android.view.WindowManager*adTokenException:Unabletoaddwindow--tokennullisnotvalid;isyouractivityrunning?  atandroid.view.ViewRootImpl.setView(ViewRootImpl.java:809)  atandroid.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:356)  atandroid.view.WindowManagerImpl.addView(WindowManagerImpl.java:94)  atandroid.app.Dialog.show(Dialog.java:3*)  a*.*.plugin.iiii.tg.show(UnknownSource:10)  a*.*.plugin.iiii.hi.show(UnknownSource:0)  a*.*.plugin.iiii.vg.v(UnknownSource:23)  a*.*.plugin.iiii.hg.run(UnknownSource:2)  atandroid.os.Handler.handleCallback(Handler.java:873)  atandroid.os.Handler.dispatchMessage(Handler.java:99)  atandroid.os.Looper.loop(Looper.java:224)  atandroid.app.ActivityThread.main(ActivityThread.java:7042)  atjava.lang.reflect.Method.invoke(NativeMethod) * * it.java:868) 20