Question

我尝试在Android网络视图上加载一个特定的URL，并且如我在屏幕快照1中所附加的那样，它始终会引发错误：

此处的代码

 mWebView = (WebView) view.findViewById(R.id.webview);
        mWebView.setWebChromeClient(new WebChromeClient());
        WebSettings settings = mWebView.getSettings();
        CookieManager.getInstance().setAcceptCookie(true);

        settings.setBuiltInZoomControls(true);
        settings.setLoadsImagesAutomatically(true);
        settings.setSupportZoom(true);
        settings.setDomStorageEnabled(true);
        settings.setUserAgentString(AppConstant.USER_AGENT);

        mWebView.getSettings().getJavaScriptEnabled();
        mWebView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
        mWebView.getSettings().setAppCacheEnabled(true);
        mWebView.setWebViewClient(new MyBrowser());
        mWebView.setInitialScale(30);
        mWebView.getSettings().setUseWideViewPort(true);
        mWebView.setScrollbarFadingEnabled(false);

  if (mFindPricesURL.contains(".pdf")) {
            try {
                mWebView.loadUrl("http://drive.google.com/viewerng/viewer?embedded=true&url=" + mFindPricesURL);
            } catch (Exception e) {
                launchDocumentViewer(mFindPricesURL);
            }
        } else if (mFindPricesURL.contains(".xls") || mFindPricesURL.contains(".ppt")
                || mFindPricesURL.contains(".doc")) {
            launchDocumentViewer("https://m.goodrx.com/search");
        } else {
            mWebView.loadUrl(mFindPricesURL);
        }

我也是

 private class MyBrowser extends WebViewClient {

        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);
            ProgressBarUtil.dismissProgressDialog();
            view.loadUrl("javascript:document.getElementById('imPage').style.display='none';");
        }

    }

正如代码中提到的那样，我已经在Webview中启用了cookie和Java脚本，但我对此没有做什么

Answer 1

我发现您正在使用mWebView.getSettings().getJavaScriptEnabled();，但您必须致电settings.setJavaScriptEnabled(true);

致电settings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);时必须致电setAppCacheEnabled

对于Cookie，您可以致电CookieManager.getInstance().setAcceptCookie(true);

更新代码

完整的代码库为：

settings.setJavaScriptEnabled(true);
settings.setDefaultFontSize(utils.getTextSize());
settings.setDefaultFixedFontSize(utils.getTextSize());
settings.setAppCacheEnabled(true);
settings.setDatabaseEnabled(true);
settings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
settings.setSaveFormData(true);
settings.setDomStorageEnabled(true);
settings.setAllowContentAccess(true);
settings.setAllowFileAccessFromFileURLs(true);
getSettings().setLoadWithOverviewMode(false);
getSettings().setUseWideViewPort(false);
getSettings().setDisplayZoomControls(false);
getSettings().setBuiltInZoomControls(true);
getSettings().setSupportZoom(true);
getSettings().setUseWideViewPort(true);
getSettings().setLoadWithOverviewMode(true);
String ua = "";
String[] buildNumber = FINGERPRINT.split("/");
if (SDK_INT < Build.VERSION_CODES.KITKAT) {

       ua = "Mozilla/5.0 (Linux; U; Android " + API + "; en-us; Build/" + FINGERPRINT + ") AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Safari/534.30";
  } else if (SDK_INT >= Build.VERSION_CODES.KITKAT && SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
       ua = "Mozilla/5.0 (Linux; Android " + API + "; " + MODEL + " Build/" + buildNumber[3] + ") AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36";
} else {
      ua = "Mozilla/5.0 (Linux; Android " + API + "; " + MODEL + " Build/" + buildNumber[3] + ") AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/73.0.3683.90 Mobile Safari/537.36";

  }

getSettings().setUserAgentString(ua);

此处：

private static final String API = Build.VERSION.RELEASE;
private static final String MODEL = Build.MODEL;
private static final String FINGERPRINT = Build.FINGERPRINT;
private static final String FINGERPRINT = Build.FINGERPRINT;

Answer 2

这是我们必须为API级别17以上实现WebView JavaScript接口的解决方案

public class WebAppInterface {
Context mContext;

/** Instantiate the interface and set the context */
WebAppInterface(Context c) {
    mContext = c;
}

/** Show a toast from the web page */
@JavascriptInterface
public void showToast(String toast) {
    Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show();
} }

警告：如果将targetSdkVersion设置为17或更高，则必须将@JavascriptInterface批注添加到JavaScript希望使用的任何方法中（该方法还必须是公共的）。如果不提供注释，则在Android 4.2或更高版本上运行时，网页无法访问该方法。

在此处了解如何实现：https://developer.android.com/guide/webapps/webview

WebView和高级视图未加载partiucalr URL

2 个答案: