javascript - 使用 webview javascript 在 android 中下载 facebook 视频

问题描述

我正在创建一个 Facebook 视频下载器应用程序，但我想在 LoadResource 上播放视频链接我想在点击监听器上获得一个视频链接。这是我的代码。

public class MainActivity extends AppCompatActivity {
    WebView webView;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        webView = (WebView) findViewById(R.id.webview);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setPluginState(WebSettings.PluginState.ON);
        webView.getSettings().setBuiltInZoomControls(true);
        webView.getSettings().setDisplayZoomControls(true);
        webView.getSettings().setUseWideViewPort(true);
        webView.getSettings().setLoadWithOverviewMode(true);
        webView.addJavascriptInterface(this, "FBDownloader");
        webView.setWebViewClient(new WebViewClient() {
            @Override
            public void onPageFinished(WebView view, String url) {

                webView.loadUrl("javascript:(function() { "
                        + "var el = document.querySelectorAll('div[data-sigil]');"
                        + "for(var i=0;i<el.length; i++)"
                        + "{"
                        + "var sigil = el[i].dataset.sigil;"
                        + "if(sigil.indexOf('inlineVideo') > -1){"
                        + "delete el[i].dataset.sigil;"
                        + "var jsonData = JSON.parse(el[i].dataset.store);"
                        + "el[i].setAttribute('onClick', 'FBDownloader.processVideo(\"'+jsonData['src']+'\");');"
                        + "}" + "}" + "})()");
            }

            @Override
            public void onLoadResource(WebView view, String url) {
                webView.loadUrl("javascript:(function prepareVideo() { "
                        + "var el = document.querySelectorAll('div[data-sigil]');"
                        + "for(var i=0;i<el.length; i++)"
                        + "{"
                        + "var sigil = el[i].dataset.sigil;"
                        + "if(sigil.indexOf('inlineVideo') > -1){"
                        + "delete el[i].dataset.sigil;"
                        + "console.log(i);"
                        + "var jsonData = JSON.parse(el[i].dataset.store);"
                        + "el[i].setAttribute('onClick', 'FBDownloader.processVideo(\"'+jsonData['src']+'\",\"'+jsonData['videoID']+'\");');"
                        + "}" + "}" + "})()");
                webView.loadUrl("javascript:( window.onload=prepareVideo;"
                        + ")()");
            }
        });

        CookieSyncManager.createInstance(this);
        CookieManager cookieManager = CookieManager.getInstance();
        cookieManager.setAcceptCookie(true);
        CookieSyncManager.getInstance().startSync();

        webView.loadUrl("https://m.facebook.com/");
    }

    @JavascriptInterface
    public void processVideo(final String vidData, final String vidID) {
        try {
            String mBaseFolderPath = android.os.Environment
                    .getExternalStorageDirectory()
                    + File.separator
                    + "FacebookVideos" + File.separator;
            if (!new File(mBaseFolderPath).exists()) {
                new File(mBaseFolderPath).mkdir();
            }
            String mFilePath = "file://" + mBaseFolderPath + "/" + vidID + ".mp4";

            Uri downloadUri = Uri.parse(vidData);
            DownloadManager.Request req = new DownloadManager.Request(downloadUri);
            req.setDestinationUri(Uri.parse(mFilePath));
            req.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
            DownloadManager dm = (DownloadManager) getSystemService(getApplicationContext().DOWNLOAD_SERVICE);
            dm.enqueue(req);
            Toast.makeText(this, "Download Started", Toast.LENGTH_LONG).show();
        } catch (Exception e) {
            Toast.makeText(this, "Download Failed: " + e.toString(), Toast.LENGTH_LONG).show();
        }
    }
}

但是这段代码不能正常工作。这不会返回任何视频链接。我尝试了很多方法并在 GitHub 上进行了搜索，但都失败了。谁能建议任何方法来做到这一点？

提前致谢！！

标签： javascriptandroidandroid-webviewfacebook-javascript-sdk

javascript - 使用 webview javascript 在 android 中下载 facebook 视频

问题描述

解决方案

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