安卓集成5+sdk启动H5应用时有时会进入加载页面返回，使用webapp方式集成

04-08 18:45:31.747: I/ylyl(16272): AppMGr START_APP abasApp
04-08 18:45:31.747: I/ylyl(16272): startOneApp abasApp
04-08 18:45:31.887: I/Timeline(16272): Timeline: Activity_idle id: android.os.BinderProxy@432739f8 time:16297250
04-08 18:45:33.567: D/dalvikvm(16272): GC_FOR_ALLOC freed 3785K, 24% free 21617K/28144K, paused 17ms, total 17ms
04-08 18:45:35.337: W/System.err(16272): java.lang.NullPointerException
04-08 18:45:35.337: W/System.err(16272): at io.dcloud.common.b.b.i$5.onCallBack(WindowMgr.java:867)
04-08 18:45:35.337: W/System.err(16272): at io.dcloud.common.adapter.ui.AdaWebview.dispatchWebviewStateEvent(AdaWebview.java:605)
04-08 18:45:35.337: W/System.err(16272): at io.dcloud.common.adapter.ui.WebLoadEvent.onPageFinished(WebLoadEvent.java:521)
04-08 18:45:35.337: W/System.err(16272): at com.android.webview.chromium.WebViewContentsClientAdapter.onPageFinished(WebViewContentsClientAdapter.java:493)
04-08 18:45:35.337: W/System.err(16272): at com.android.org.chromium.android_webview.AwContentsClient$AwWebContentsObserver.didFinishLoad(AwContentsClient.java:62)
04-08 18:45:35.337: W/System.err(16272): at com.android.org.chromium.base.SystemMessageHandler.nativeDoRunLoopOnce(Native Method)
04-08 18:45:35.337: W/System.err(16272): at com.android.org.chromium.base.SystemMessageHandler.handleMessage(SystemMessageHandler.java:24)
04-08 18:45:35.337: W/System.err(16272): at android.os.Handler.dispatchMessage(Handler.java:102)
04-08 18:45:35.337: W/System.err(16272): at android.os.Looper.loop(Looper.java:136)
04-08 18:45:35.337: W/System.err(16272): at android.app.ActivityThread.main(ActivityThread.java:5336)
04-08 18:45:35.337: W/System.err(16272): at java.lang.reflect.Method.invokeNative(Native Method)
04-08 18:45:35.337: W/System.err(16272): at java.lang.reflect.Method.invoke(Method.java:515)
04-08 18:45:35.337: W/System.err(16272): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:871)
04-08 18:45:35.337: W/System.err(16272): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:687)
04-08 18:45:35.337: W/System.err(16272): at dalvik.system.NativeStart.main(Native Method)
04-08 18:45:35.347: A/libc(16272): Fatal signal 6 (SIGABRT) at 0x00003f90 (code=-6), thread 16272 (om.example.test)
04-08 18:45:36.087: D/ActivityThread(17831): handleBindApplication:com.example.test
04-08 18:45:36.087: D/ActivityThread(17831): setTargetHeapUtilization:0.75
04-08 18:45:36.087: D/ActivityThread(17831): setTargetHeapMinFree:4194304
04-08 18:45:36.087: D/ActivityThread(17831): setTargetHeapConcurrentStart:2097152
04-08 18:45:36.117: V/HwPolicyFactory(17831): : success to get AllImpl object and return....
04-08 18:45:36.127: V/HwWidgetFactory(17831): : successes to get AllImpl object and return....
04-08 18:45:36.327: I/Adreno-EGL(17831): <qeglDrvAPI_eglInitialize:410>: EGL 1.4 QUALCOMM build: ()
04-08 18:45:36.327: I/Adreno-EGL(17831): OpenGL ES Shader Compiler Version: E031.24.02.07
04-08 18:45:36.327: I/Adreno-EGL(17831): Build Date: 01/15/15 Thu
04-08 18:45:36.327: I/Adreno-EGL(17831): Local Branch:
04-08 18:45:36.327: I/Adreno-EGL(17831): Remote Branch:
04-08 18:45:36.327: I/Adreno-EGL(17831): Local Patches:
04-08 18:45:36.327: I/Adreno-EGL(17831): Reconstruct Branch:
04-08 18:45:36.337: I/qdutils(17831): PartialUpdate status: Disabled
04-08 18:45:36.337: I/qdutils(17831): Left Align: 0
04-08 18:45:36.337: I/qdutils(17831): Width Align: 0
04-08 18:45:36.337: I/qdutils(17831): Top Align: 0
04-08 18:45:36.337: I/qdutils(17831): Height Align: 0
04-08 18:45:36.337: I/qdutils(17831): Min ROI Width: 0
04-08 18:45:36.337: I/qdutils(17831): Min ROI Height: 0
04-08 18:45:36.347: D/OpenGLRenderer(17831): Enabling debug mode 0
04-08 18:45:36.507: I/Timeline(17831): Timeline: Activity_idle id: android.os.BinderProxy@430926d0 time:16301877