WebView加载视频网页无法横屏问题

webview加载视频网页的时候会遇到无法横屏的问题，此问题需要自己重新定义设置webview里面横竖屏布局，具体代码如下：

private WebView webView;
/**
 * 视频全屏参数
 */
protected static final FrameLayout.LayoutParams COVER_SCREEN_PARAMS = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
private View customView;
private FrameLayout fullscreenContainer;
private WebChromeClient.CustomViewCallback customViewCallback;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_movie);
}

@Override
public void initVariables() {

}

@Override
public void initView() {
    webView = findViewById(R.id.movie);
    initWebView();
}

/**
 * 展示网页界面
 **/
public void initWebView() {
    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);//加载网页js
    webSettings.setUseWideViewPort(true); // 关键点
    webSettings.setAllowFileAccess(true); // 允许访问文件
    webSettings.setSupportZoom(true); // 支持缩放
    webSettings.setLoadWithOverviewMode(true);
    webSettings.setCacheMode(WebSettings.LOAD_NO_CACHE); // 不加载缓存内容
    webSettings.setDomStorageEnabled(true);  //设置适应Html5重点是这个设置
    WebViewClient wvc = new WebViewClient() {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            return super.shouldOverrideUrlLoading(view, url);
        }
        @Override
        public void onPageFinished(WebView view, String url) {//页面加载完成
            HideDialog();//隐藏加载框
        }
        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {//页面开始加载
            showDialog(this);//显示加载框
        }
        @Override
        public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
            handler.proceed();
            super.onReceivedSslError(view, handler, error);
        }
    };
    webView.setWebViewClient(wvc);
    webView.setWebChromeClient(new WebChromeClient() {
        /*** 视频播放相关的方法 **/
        @Override
        public View getVideoLoadingProgressView() {
            FrameLayout frameLayout = new FrameLayout(MovieActivity.this);
            frameLayout.setLayoutParams(new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT));
            return frameLayout;
        }

        @Override
        public void onShowCustomView(View view, CustomViewCallback callback) {
            showCustomView(view, callback);
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);//播放时横屏幕，如果需要改变横竖屏，只需该参数就行了
        }
        @Override
        public void onHideCustomView () {
            hideCustomView();
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);//不播放时竖屏
        }
    });

    // 加载Web地址
    webView.loadUrl("https://www.kankanwu.com/");
}
/** 视频播放全屏 **/
private void showCustomView(View view, WebChromeClient.CustomViewCallback callback) {
    // if a view already exists then immediately terminate the new one
    if (customView != null) {
        callback.onCustomViewHidden();
        return;
    }

    this.getWindow().getDecorView();

    FrameLayout decor = (FrameLayout) getWindow().getDecorView();
    fullscreenContainer = new FullscreenHolder(this);
    fullscreenContainer.addView(view, COVER_SCREEN_PARAMS);
    decor.addView(fullscreenContainer, COVER_SCREEN_PARAMS);
    customView = view;
    setStatusBarVisibility(false);
    customViewCallback = callback;
}

/**
 * 隐藏视频全屏
 */
private void hideCustomView() {
    if (customView == null) {
        return;
    }
    setStatusBarVisibility(true);
    FrameLayout decor = (FrameLayout) getWindow().getDecorView();
    decor.removeView(fullscreenContainer);
    fullscreenContainer = null;
    customView = null;
    customViewCallback.onCustomViewHidden();
    webView.setVisibility(View.VISIBLE);
}

/**
 * 全屏容器界面
 */
static class FullscreenHolder extends FrameLayout {

    public FullscreenHolder(Context ctx) {
        super(ctx);
        setBackgroundColor(ctx.getResources().getColor(android.R.color.black));
    }

    @Override
    public boolean onTouchEvent(MotionEvent evt) {
        return true;
    }
}

private void setStatusBarVisibility(boolean visible) {
    int flag = visible ? 0 : WindowManager.LayoutParams.FLAG_FULLSCREEN;
    getWindow().setFlags(flag, WindowManager.LayoutParams.FLAG_FULLSCREEN);
}

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
    switch (keyCode) {
        case KeyEvent.KEYCODE_BACK:
            /** 回退键 事件处理 优先级:视频播放全屏-网页回退-关闭页面 */
            if (customView != null) {
                hideCustomView();
            } else if (webView.canGoBack()) {
                webView.goBack();
            } else {
                finish();
            }
            return true;
        default:
            return super.onKeyUp(keyCode, event);
    }
}

@Override
protected void onDestroy() {
    super.onDestroy();
    webView.stopLoading();
    webView.setWebChromeClient(null);
    webView.setWebViewClient(null);
    webView = null;
}

@Override
public void loaderData() {

}

@Override
protected void onChange(NotifyInfo notifyInfo) {

}

@Override
protected String[] getObserverEventType() {
    return new String[0];
}

/**
 * 监听返回键
 *
 * @param keyCode
 * @param event
 * @return
 */
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (webView.canGoBack()) {
            webView.goBack();//返回上一个页面
            return true;
        }
    }
    return false;
}