Android webview加载html自适应屏幕

webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);// 不使用缓存
webView.getSettings().setUserAgentString(System.getProperty("http.agent"));
webView.getSettings().setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN);//把html中的内容放大webview等宽的一列中
webView.getSettings().setAppCacheEnabled(true);
webView.getSettings().setDomStorageEnabled(true);

webView.setWebViewClient(new MyWebViewClient());
webView.loadData(productDiscribeInfo, "text/html", "UTF-8");

private class MyWebViewClient extends WebViewClient {

@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
imgReset();//重置webview中img标签的图片大小
}

@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}

/**
* 对图片进行重置大小，宽度就是手机屏幕宽度，高度根据宽度比便自动缩放
**/
private void imgReset() {
webView.loadUrl("javascript:(function(){" +
"var objs = document.getElementsByTagName('img'); " +
"for(var i=0;i<objs.length;i++)  " +
"{"
+ "var img = objs[i];   " +
"    img.style.maxWidth = '100%'; img.style.height = 'auto';  " +
"}" +
"})()");
}