在Android 3.1上实现onShowCustomView会在HTML5VideoFullScreen中引发异常

Question

我正试图在全屏播放html中的视频.当我在视频方法中单击全屏按钮onShowCustomView被触发时.这是我的实现:

public void onShowCustomView(View view, CustomViewCallback callback) {
    super.onShowCustomView(view, callback);
    if (view instanceof FrameLayout) {
        customComponenet.addView(view, new FrameLayout.LayoutParams(
                ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT,
                Gravity.CENTER));
        customComponenet.setVisibility(View.VISIBLE);
    }
}

customComponenet是将FrameLayout置于当前布局之上的位置.Wideo打得很好,它是可见的,一切接缝都可以,但它会抛出:

    08-27 22:16:07.520: ERROR/AndroidRuntime(7235): FATAL EXCEPTION: main
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235): java.lang.NullPointerException
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at android.webkit.HTML5VideoFullScreen.switchProgressView(HTML5VideoFullScreen.java:320)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at android.webkit.HTML5VideoView.setPlayerBuffering(HTML5VideoView.java:319)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at android.webkit.HTML5VideoView.start(HTML5VideoView.java:85)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at android.webkit.HTML5VideoViewProxy$VideoPlayer.onPrepared(HTML5VideoViewProxy.java:257)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at android.webkit.HTML5VideoViewProxy.onPrepared(HTML5VideoViewProxy.java:278)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at android.webkit.HTML5VideoView.onPrepared(HTML5VideoView.java:265)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at android.webkit.HTML5VideoFullScreen.onPrepared(HTML5VideoFullScreen.java:164)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at android.media.MediaPlayer$EventHandler.handleMessage(MediaPlayer.java:1456)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at android.os.Handler.dispatchMessage(Handler.java:99)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at android.os.Looper.loop(Looper.java:132)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at android.app.ActivityThread.main(ActivityThread.java:4028)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at java.lang.reflect.Method.invokeNative(Native Method)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at java.lang.reflect.Method.invoke(Method.java:491)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
    08-27 22:16:07.520: ERROR/AndroidRuntime(7235):     at dalvik.system.NativeStart.main(Native Method)

我究竟做错了什么？

我的WebView设置:

webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setPluginState(PluginState.ON);
webView.getSettings().setDomStorageEnabled(true);
webView.getSettings().setDatabasePath("/data/data/" + App.class.getPackage().getName() + "/databases");
webView.getSettings().setSupportZoom(false);

我在Galaxy Tab 10.1上测试,在默认浏览器上这很好用.我可以切换到全屏.此外,在我的应用程序中,当我播放视频嵌入时,我只能听到声音并看到视频应该在区域下方的状态栏,而在浏览器上我可以看到视频都嵌入在WebView和全屏幕中.

编辑 https://github.com/novemberox/VideoFail这里是带有该错误的示例项目,您也可以在模拟器上打开它,因此您不需要拥有真正的设备.

Answer 1

NPE 看起来像是 HTML5VideoFullScreen 中的一个错误，尽管我无法用我的模拟器重现它。

可能 HTML5VideoFullScreen 期望来自WebChromeClient#getVideoLoadingProgressView的非空视图。尝试重写该方法以返回一个非空 View 对象（例如，布局中的虚假 0x0 View）并查看是否仍然崩溃。