在Android webview中加载特定的HTTPS Web应用程序

Question

我正在尝试加载web应用程序https://waveswallet.io这是一个android webview上的区块链钱包应用程序，我的所有尝试都失败了。

我已经尝试了在https网站的堆栈上提到的所有不同的方法但是应用程序拒绝在webview上加载，尽管使用任何chrome或firefox浏览器都能正常工作。

这是我到目前为止使用的代码。

mWebView =(WebView)findViewById(R.id.webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setDomStorageEnabled(true);
mWebView.getSettings().setAppCacheEnabled(true);
mWebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
mWebView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);
mWebView.loadUrl("https://waveswallet.io");
mWebView.setWebChromeClient(new WebChromeClient());
mWebView.setWebViewClient(new WebViewClient());

Answer 1

使用下面的代码到WebViewClient并处理onReceivedSslError方法：

mWebView.setWebViewClient(new WebViewClient() {

            @Override
            public void onReceivedSslError(WebView view, final SslErrorHandler handler, SslError error){
                final AlertDialog.Builder builder = new AlertDialog.Builder(view.getContext());
                String message = "SSL Certificate error.";
                switch (error.getPrimaryError()) {
                    case SslError.SSL_UNTRUSTED:
                        message = "The certificate authority is not trusted.";
                        break;
                    case SslError.SSL_EXPIRED:
                        message = "The certificate has expired.";
                        break;
                    case SslError.SSL_IDMISMATCH:
                        message = "The certificate Hostname mismatch.";
                        break;
                    case SslError.SSL_NOTYETVALID:
                        message = "The certificate is not yet valid.";
                        break;
                    case SslError.SSL_DATE_INVALID:
                        message = "The date of the certificate is invalid.";
                        break;
                    case SslError.SSL_INVALID:
                        message = "A generic error occurred.";
                        break;
                    case SslError.SSL_MAX_ERROR:
                        message = "Unknown error occurred.";
                        break;
                }
                message += " Do you want to continue anyway?";

                builder.setTitle("SSL Certificate Error");
                builder.setMessage(message);
                builder.setPositiveButton("Continue", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        handler.proceed();
                    }
                });
                builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        handler.cancel();
                    }
                });
                final AlertDialog dialog = builder.create();
                dialog.show();
            }
        });

并将此行移至最后一行代码并在上面的代码之后：

mWebView.loadUrl("https://waveswallet.io");

更新的完整代码：

    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);

    CookieManager.getInstance().setAcceptCookie(true);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            // If Android 6.0+ i must add support for Third Party Cookies
            CookieManager.getInstance().setAcceptThirdPartyCookies(sourceWebView, true);
        }
        mWebView.getSettings().setPluginState(WebSettings.PluginState.ON);
      mWebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(false);
        //mWebView.getSettings().setPluginsEnabled(true);
        mWebView.getSettings().setSupportMultipleWindows(false);
        mWebView.getSettings().setSupportZoom(true);
        mWebView.setVerticalScrollBarEnabled(true);
        mWebView.setHorizontalScrollBarEnabled(true);
        mWebView.getSettings().setBuiltInZoomControls(true);
        mWebView.getSettings().setLoadWithOverviewMode(true);
        mWebView.getSettings().setUseWideViewPort(true);
        mWebView.getSettings().setUserAgentString("Android WebView");
        mWebView.getSettings().setDomStorageEnabled(true);
        mWebView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);
        mWebView.getSettings().setJavaScriptEnabled(true);
        mWebView.addJavascriptInterface(this, "Android");// add this only if required. Vulnerable to mitm attacks.
        mWebView.getSettings().setLoadsImagesAutomatically(true);
        mWebView.getSettings().setAppCacheEnabled(true);
        mWebView.getSettings().setAllowFileAccess(true);
        mWebView.getSettings().setLoadWithOverviewMode(true);
        mWebView.setWebChromeClient(new WebChromeClient());
        mWebView.setWebViewClient(new WebViewClient());// use as above to handle ssl errors
        mWebView.loadUrl("https://waveswallet.io");

OUTPUT SCREENSHOTS

设备1 - Moto E3 Power [Android Marshmallow 6.0，API等级23]

设备2 - 三星Galaxy S8 [Android Nougat 7.0，API级别24]

设备3 - 一加五[Android Oreo 8.0.0，API等级26]

我希望这能解决你的问题。因为您的网站上的SSL证书存在问题。

Answer 2

你可以试试这个

 try {
        if (CommonUtils.isConnectingToInternet(HelpWebviewActivity.this)) {
        //check internet connection

            WebSettings webSettings = webview_help.getSettings();
            webview_help.setWebViewClient(new MyWebViewClient());
            webSettings.setJavaScriptEnabled(true);
            webview_help.getSettings().setSupportZoom(true);
            webview_help.getSettings().setBuiltInZoomControls(true);
            webview_help.getSettings().setDisplayZoomControls(true);
            webview_help.loadUrl(url);


        }
        else {

            CommonUtils.commonToast(HelpWebviewActivity.this, getResources().getString(R.string.no_internet_exist));
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

Answer 3

试试这些设置：

WebSettings websettings = mWebView.getSettings();
websettings.setDomStorageEnabled(true);
websettings.setJavaScriptEnabled(true);