设置WebChromeClient

设置后，重点重下以下两个方法

showCustomView会将webView中视频的部分的view传递进来，我们需要提供一个ViewGoup容器接收并显示它

onHideCustomView则在用户退出全屏时调用，我们需要将它从自己的ViewGoup容器中移除

override fun onShowCustomView(view: View, callback: CustomViewCallback?) {
    LogUtils.i("全屏展示")
    showCustomView(view, callback)
    super.onHideCustomView()
}
override fun onHideCustomView() {
    LogUtils.i("全屏隐藏")
    onHideCustomView()
    hideCustomView()
}

适配代码

    var mCustomView: View? = null
    /**
     **方案一
     **竖屏，View旋转
     **/
    private fun showCustomView(view: View, callback: WebChromeClient.CustomViewCallback?) {
        if (mCustomView != null) {
            callback?.onCustomViewHidden()
            return
        }
        val act = ActivityUtils.getTopActivity()
        BarUtils.setStatusBarVisibility(act.window, false)
        val decorView: FrameLayout = ActivityUtils.getTopActivity().window.decorView as FrameLayout
        //黑色背景
        view.setBackgroundColor(Color.BLACK)
        //减去状态栏部分，避免被状态栏遮挡
        decorView.addView(view, decorView.height,decorView.width)
        mCustomView = view
        //横屏旋转对齐
        view.rotation = 90f
        view.translationX = (decorView.width-decorView.height).toFloat()/2f
        view.translationY = (decorView.height-decorView.width).toFloat()/2f
    }
    
    /**
     **方案二
     **屏幕旋转，要加上配置android:configChanges="keyboardHidden|orientation|screenSize"避免view重建
     **/
    private fun showCustomView(view: View, callback: WebChromeClient.CustomViewCallback?) {
        if (mCustomView != null) {
            callback?.onCustomViewHidden()
            return
        }
        view.setBackgroundColor(Color.BLACK)
        val act = ActivityUtils.getTopActivity()
        BarUtils.setStatusBarVisibility(act.window, false)
        val decorView: FrameLayout = ActivityUtils.getTopActivity().window.decorView as FrameLayout
        decorView.addView(view, decorView.height,decorView.width)
        mCustomView = view
        //改变屏幕方向，隐藏时记得还原
        act.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
    }

    private fun hideCustomView(){
        if (mCustomView == null) {
            return
        }
        val act = ActivityUtils.getTopActivity()
        val decorView: FrameLayout = act.window.decorView as FrameLayout
        //act.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED
        decorView.setBackgroundColor(Color.TRANSPARENT)
        decorView.removeView(mCustomView)
        mCustomView = null
        BarUtils.setStatusBarVisibility(act.window, true)
    }