(unresolved) issue record ionic Android signature after install to phone click Run appears flash back, unsigned run OK

Log logs are as follows:

 .- + Ten: A:52.495: E/trace (2682): Error opening tracefile: No Suchfileor directory (2) .- + Ten: A:52.723: E/androidruntime (2682): FATAL exception:main .- + Ten: A:52.723: E/androidruntime (2682): Java.lang.RuntimeException:Unable to start activity componentinfo{com.ionicframework.myapp1274288/com.ionicframework.myapp1274288.MainActivity}: java.lang.RuntimeException:Failed to create WebView.  .- + Ten: A:52.723: E/androidruntime (2682): At Android.app.ActivityThread.performLaunchActivity (Activitythread.java:2351) .- + Ten: A:52.723: E/androidruntime (2682): At Android.app.ActivityThread.handleLaunchActivity (Activitythread.java:2403) .- + Ten: A:52.723: E/androidruntime (2682): At android.app.activitythread.access$ -(Activitythread.java:165) .- + Ten: A:52.723: E/androidruntime (2682): At Android.app.activitythread$h.handlemessage (Activitythread.java:1373) .- + Ten: A:52.723: E/androidruntime (2682): At Android.os.Handler.dispatchMessage (Handler.java:107) .- + Ten: A:52.723: E/androidruntime (2682): At Android.os.Looper.loop (Looper.java:194) .- + Ten: A:52.723: E/androidruntime (2682): At Android.app.ActivityThread.main (Activitythread.java:5407) .- + Ten: A:52.723: E/androidruntime (2682): At Java.lang.reflect.Method.invokeNative (Native Method) .- + Ten: A:52.723: E/androidruntime (2682): At Java.lang.reflect.Method.invoke (Method.java:525) .- + Ten: A:52.723: E/androidruntime (2682): At Com.android.internal.os.zygoteinit$methodandargscaller.run (Zygoteinit.java:838) .- + Ten: A:52.723: E/androidruntime (2682): At Com.android.internal.os.ZygoteInit.main (Zygoteinit.java:605) .- + Ten: A:52.723: E/androidruntime (2682): At Dalvik.system.NativeStart.main (Native Method) .- + Ten: A:52.723: E/androidruntime (2682): caused By:java.lang.RuntimeException:Failed to create webview.  .- + Ten: A:52.723: E/androidruntime (2682): At Org.apache.cordova.CordovaWebViewImpl.createEngine (Cordovawebviewimpl.java: the) .- + Ten: A:52.723: E/androidruntime (2682): At Org.apache.cordova.CordovaActivity.makeWebViewEngine (Cordovaactivity.java:192) .- + Ten: A:52.723: E/androidruntime (2682): At Org.apache.cordova.CordovaActivity.makeWebView (Cordovaactivity.java:188) .- + Ten: A:52.723: E/androidruntime (2682): At Org.apache.cordova.CordovaActivity.init (Cordovaactivity.java:136) .- + Ten: A:52.723: E/androidruntime (2682): At Org.apache.cordova.CordovaActivity.loadUrl (Cordovaactivity.java: About) .- + Ten: A:52.723: E/androidruntime (2682): At Com.ionicframework.myapp1274288.MainActivity.onCreate (Mainactivity.java: +) .- + Ten: A:52.723: E/androidruntime (2682): At Android.app.Activity.performCreate (Activity.java:5150) .- + Ten: A:52.723: E/androidruntime (2682): At Android.app.Instrumentation.callActivityOnCreate (Instrumentation.java:1150) .- + Ten: A:52.723: E/androidruntime (2682): At Android.app.ActivityThread.performLaunchActivity (Activitythread.java:2315) .- + Ten: A:52.723: E/androidruntime (2682):     ... One  More .- + Ten: A:52.723: E/androidruntime (2682): caused By:java.lang.reflect.InvocationTargetException .- + Ten: A:52.723: E/androidruntime (2682): At Java.lang.reflect.Constructor.constructNative (Native Method) .- + Ten: A:52.723: E/androidruntime (2682): At Java.lang.reflect.Constructor.newInstance (Constructor.java:417) .- + Ten: A:52.723: E/androidruntime (2682): At Org.apache.cordova.CordovaWebViewImpl.createEngine (Cordovawebviewimpl.java:Bayi) .- + Ten: A:52.723: E/androidruntime (2682):     ... +  More .- + Ten: A:52.723: E/androidruntime (2682): Caused By:java.lang.RuntimeException:java.lang.RuntimeException:Use SharedxwalkviewifYou want to support shared mode .- + Ten: A:52.723: E/androidruntime (2682): At Org.xwalk.core.ReflectionHelper.handleException (Reflectionhelper.java:233) .- + Ten: A:52.723: E/androidruntime (2682): At Org.xwalk.core.ReflectionHelper.handleException (Reflectionhelper.java:237) .- + Ten: A:52.723: E/androidruntime (2682): At Org.xwalk.core.ReflectionHelper.init (Reflectionhelper.java: the) .- + Ten: A:52.723: E/androidruntime (2682): At Org.xwalk.core.ReflectionHelper.loadClass (Reflectionhelper.java:199) .- + Ten: A:52.723: E/androidruntime (2682): At Org.xwalk.core.XWalkPreferences.setValue (Xwalkpreferences.java: the) .- + Ten: A:52.723: E/androidruntime (2682): At Org.crosswalk.engine.XWalkCordovaView.setGlobalPrefs (Xwalkcordovaview.java: +) .- + Ten: A:52.723: E/androidruntime (2682): At Org.crosswalk.engine.xwalkcordovaview.<init> (Xwalkcordovaview.java: -) .- + Ten: A:52.723: E/androidruntime (2682): At Org.crosswalk.engine.xwalkwebviewengine.<init> (Xwalkwebviewengine.java: About) .- + Ten: A:52.723: E/androidruntime (2682):     ... A  More .- + Ten: A:52.723: E/androidruntime (2682): Caused By:java.lang.RuntimeException:Use SharedxwalkviewifYou want to support shared mode .- + Ten: A:52.723: E/androidruntime (2682):     ... in  More .- + Ten: A:52.855: E/apperrordialog (563): Failed to get Ilowstoragehandle instance .- + Ten: A:55.476: E/surfaceflinger (129): Getdefaultdisplay:ID=2is not a valid default displayID

(unresolved) issue record ionic Android signature after install to phone click Run appears flash back, unsigned run OK