我改了一点，嵌套布局太多，如果是单一webview就比较好解决

mBinding.rvContentList.setWebViewClient(new WebViewClient() {

@Override

public void onPageFinished(WebView view, String url) {

mBinding.rvContentList.loadUrl("javascript:App.resize(document.body.getBoundingClientRect().height)");

super.onPageFinished(view, url);

}

});

mBinding.rvContentList.addJavascriptInterface(this, "App");

@JavascriptInterface

public void resize(final float height) {

Log.e("TAG","promotion"+height);

getActivity().runOnUiThread(new Runnable() {

@Override

public void run() {

setWebViewHeight(DisplayUtils.dipToPixels(getActivity(), (int)height));

//Toast.makeText(getActivity(), height + "", Toast.LENGTH_LONG).show();

//此处的 layoutParmas 需要根据父控件类型进行区分，这里为了简单就不这么做了

//          mBinding.rvContentList.setLayoutParams(new ConstraintLayout.LayoutParams(getResources().getDisplayMetrics().widthPixels, (int) (height * getResources().getDisplayMetrics().density)));

}

});

}

private int mWebViewHeight;

public void setWebViewHeight(final int height) {

if (height !=mWebViewHeight && height >0) {

mBinding.rvContentList.getLayoutParams().height = height;

mBinding.rvContentList.requestLayout();

mWebViewHeight = height;

}

}