Question

我在webview中加载了一个URL。即首先我在Webview中加载登录页面。然后在用户输入用户名和密码并点击webview页面中的登录按钮后，它会在webview中显示该登录的特定会话密钥。现在我想读取该会话密钥并从用户隐藏该信息。有人知道怎么做吗？

感谢。

Answer 1

同样的问题已被多次回答。所有答案都参考this post。虽然这篇文章最后有警告，但我找不到任何其他方式来实现tou正在寻找的东西。以下是此帖子中代码的复制粘贴。

final Context myApp = this;

/* An instance of this class will be registered as a JavaScript interface */
class MyJavaScriptInterface
{
    @JavascriptInterface
    @SuppressWarnings("unused")
    public void processHTML(String html)
    {
        // process the html as needed by the app
    }
}

    //Edit 1 start
 final ProgressDialog pd = ProgressDialog.show(OnlinePaymentActivity.this, "", "Please wait, your transaction is being processed...", true);

//Edit 1 end

final WebView browser = (WebView)findViewById(R.id.browser);
/* JavaScript must be enabled if you want it to work, obviously */
browser.getSettings().setJavaScriptEnabled(true);

/* Register a new JavaScript interface called HTMLOUT */
browser.addJavascriptInterface(new MyJavaScriptInterface(), "HTMLOUT");

/* WebViewClient must be set BEFORE calling loadUrl! */
browser.setWebViewClient(new WebViewClient() {

/////Edit 2 start
                  @Override
                  public void onPageStarted(WebView view, String url, Bitmap favicon)
                  {


            If(browser.getVisibility() == View.VISIBLE)
{
                      browser.setVisibility(View.GONE);
}
                      pd.show();
                  }
///// Edit 2 end

    @Override
    public void onPageFinished(WebView view, String url)
    {

//Edit 3 start

 If(browser.getVisibility() == View.GONE)
{
                      browser.setVisibility(View.VISIBLE);
}

     pd.dismiss();
// Edit 3 end

        /* This call inject JavaScript into the page which just finished loading. */
        browser.loadUrl("javascript:window.HTMLOUT.processHTML('<head>'+document.getElementsByTagName('html')[0].innerHTML+'</head>');");
    }
});

/* load a web page */
browser.loadUrl("http://lexandera.com/files/jsexamples/gethtml.html");

Answer 2

我找到了一种方法。首先，我正在读取正文中的令牌，一旦找到令牌，就使webView不可见。您的建议不适用于我，因为有时我想显示登录页面。即如果用户没有登录到特定帐户，我们应该显示Web视图。一旦他们在登录后返回令牌，就应该隐藏webview。

阅读webview内容并重定向

2 个答案: