Question

目前我有这个代码，我想要检索webview的内容，同时删除webview的某些部分的显示，但我的代码根本没有做任何事情或显示任何错误，所以我和＃39;我在这里失去了。目前，我在提及 this和 this时提到了我的代码。

这是我的网页浏览显示 link

的页面

这是我的代码＆＃39; WebViewActivity.java`

public class WebViewActivity extends Activity{

TextToSpeech textToSpeech;


@SuppressLint("JavascriptInterface")
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_webview);

    final WebView webview = (WebView) findViewById(R.id.webView);
    TextView contentView = (TextView) findViewById(R.id.contentView);


    Intent intent = getIntent();
    String Address = intent.getStringExtra("URL");
    //Log.d("Valuer", value);
    //tt1.setText(value);

    class MyJavaScriptInterface
    {
        private TextView contentView;

        public MyJavaScriptInterface(TextView aContentView)
        {
            contentView = aContentView;
        }

        @SuppressWarnings("unused")
        @SuppressLint("JavascriptInterface")

        public void processContent(String aContent)
        {
            final String content = aContent;
            contentView.post(new Runnable()
            {
                public void run()
                {
                    contentView.setText(content);
                }
            });
        }
    }

    webview.getSettings().setLoadsImagesAutomatically(true);
    webview.addJavascriptInterface(new MyJavaScriptInterface(contentView), "INTERFACE");
    webview.getSettings().setJavaScriptEnabled(true);
    webview.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
    webview.setWebViewClient(new WebViewClient() {
        @Override
        public void onPageFinished(WebView view, String url)
        {
            webview.loadUrl("javascript:window.INTERFACE.processContent(document.getElementsByClassName('western')[0].innerText);");
            webview.loadUrl("javascript:(function() { " +
                    "document.getElementsByTagName('section')[0].style.display=\"none\"; " +
                    "})()");
        }
    });



    webview.loadUrl(Address);
    //textToSpeech.speak("TALK", TextToSpeech.QUEUE_FLUSH, null);


}



}

Answer 1

试试这个，通过添加此行

       " webview.getSettings().setJavaScriptEnabled(true);"

并转到您的“Proguard.rules”文件，并使该注释代码可用于javascript

    # If your project uses WebView with JS, uncomment the following
    # and specify the fully qualified class name to the JavaScript interface
    # class:
    #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
    #   public *;
    #}

Javascript无法用于WebView - Android

1 个答案: