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POJavaScript does not work in webView
 

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  1. POJavaScript does not work in webView
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    <p>I have some problem whith WebView. Javascript doesn't work. On android 2.2 whith loadUrl(), it works well. But when I run it on android 4 using <strong>loadDataWithBaseURL</strong>, it doesn't work. What am I doing wrong?</p> <p><strong>MainActivity</strong> </p> <pre><code> import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import android.os.Bundle; import android.app.Activity; import android.content.Context; import android.view.Menu; import android.webkit.WebView; import android.widget.Toast; public class MainActivity extends Activity { String webData = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); webData = getHtmlFromAsset(); WebView webView = (WebView) findViewById(R.id.webView1); webView.getSettings().setJavaScriptEnabled(true); //webView.loadUrl("file:///android_asset/index.html"); //webView.loadData(webData, "text/html", "UTF-8"); webView.addJavascriptInterface(new JavaScriptIntefeise(this), "Android"); webView.loadDataWithBaseURL(getAssets().toString(), webData, "text/html", "UTF-8", null); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } private String getHtmlFromAsset() { InputStream is; StringBuilder builder = new StringBuilder(); String htmlString = null; try { is = getAssets().open(getString(R.string.index)); if (is != null) { BufferedReader reader = new BufferedReader(new InputStreamReader(is)); String line; while ((line = reader.readLine()) != null) { builder.append(line); } htmlString = builder.toString(); } } catch (IOException e) { e.printStackTrace(); } return htmlString; } class JavaScriptIntefeise { Context ctx; public JavaScriptIntefeise(Context ctx) { this.ctx = ctx; } public void showToast() { Toast.makeText(ctx, "ping", 3000).show(); } } } </code></pre> <p>simple sgnalR client <strong>index.html</strong></p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;title&gt;Insert title here&lt;/title&gt; &lt;script type="text/javascript" src="json2.js" &gt;&lt;/script&gt; &lt;script type="text/javascript" src="jquery-1.9.0.js" &gt;&lt;/script&gt; &lt;script type="text/javascript" src="jquery.signalR.js" &gt;&lt;/script&gt; &lt;script type="text/javascript" src="http://192.168.0.100/FloorSpy.DuplexService/signalr/hubs/"&gt;&lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;span&gt;signalR&lt;/span&gt; &lt;script type="text/javascript"&gt; if(!window.jQuery) document.body.style.backgroundColor = '#ff8000';; $.connection.hub.url = "http://192.168.0.100/FloorSpy.DuplexService/signalr"; var connection = $.connection.notif; connection.client.pong = function(data) { Android.showToast(); }; $.connection.hub.start() .done(function() { // Android.showToast(); }) .fail(function(data) { //Android.showToast(); }); &lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>I think the error in connecting libraries. <strong>Thanks for advice!</strong> </p>
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    1. CO"it doesn't work" is not a useful description of your symptoms.
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    2. COIt just doesn't work, no errors, no varnings. In the browser, it works. And if I use test html page with simple javaScript <html> <head> <title>Insert title here</title> </head> <body> <span>signalR2</span> <script type="text/javascript"> alert("alert"); document.body.style.backgroundColor = '#ff8000'; </script> </body> </html> it works
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    3. COWhat's the problem I do not know?
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      1. POJavaScript does not work in webView
      1. USuser2257161
 

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