下面是log， 我在两部手机上测试过，在华为上测试时捕捉到了异常，另一部没问题
java.lang.NullPointerException
at android.view.ViewGroup.addViewInner(ViewGroup.java:3377)
at android.view.ViewGroup.addView(ViewGroup.java:3249)
at android.view.ViewGroup.addView(ViewGroup.java:3225)
at android.webkit.HTML5VideoFullscreen.enterFullscreen(HTML5VideoFullscreen.java:253)
at android.webkit.HTML5VideoView.enterFullscreenVideoState(HTML5VideoView.java:527)
at android.webkit.HTML5VideoViewProxy$VideoPlayer.enterFullscreenVideo(HTML5VideoViewProxy.java:180)
at android.webkit.HTML5VideoViewProxy.handleMessage(HTML5VideoViewProxy.java:461)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4825)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:608)
at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132)
at dalvik.system.NativeStart.main(Native Method)
http://stackoverflow.com/questions/15768837/playing-html5-video-on-fullscreen-in-android-webview/31039021外国的解决方法，但我试了下也不行，我能想到的方法就是重写webkit，不过失败了，工程量非常大，opera mobile有个版本解决了这个问题，不知道用的是什么方法