Android :: Android WebView Not Loading A JavaScript File But Android Browser Loads It Fine
Jun 3, 2010
I'm writing an application which connects to a back office site. The backoffice site contains a whole slew of JavaScript functions, at least 100 times the average site. Unfortunately it does not load them, and causes much of the functionality to not work properly. So I am running a test. I put a page out on my server which loads the FireBugLite javascript text. Its a lot of javascript and perfect to test and see if the Android WebView will load it. The WebView loads nothing, but the browser loads the Firebug Icon. What on earth would make the difference, why can it run in the browser and not in my WebView? Any suggestions.
More background information, in order to get the stinking backoffice application available on a Droid (or any other platform except windows) I needed to trick the bakcoffice application to believe what's accessing the website is Internet Explorer. I do this by modifying the WebView User Agent.Also for this application I've slimmed my landing page, so I could give you the source to offer me aid. package ksc.myKMB;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.Window;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebSettings;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class myKMB extends Activity {
I already have JavaScript on the web browser on, the problem is the web view is acting to different from the web browser.
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Jul 12, 2010
Instead of launching a UI I was wondering if I could have a process monitor the execution of a javascript in the emulator's browser and read in the output data. Is it possible to execute a local javascript file using the phone's browser?
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May 27, 2009
when I load external web page, image or javascript file from local webpage. I can't see external image and can't load javascript or webpage. But I can only see local image. Why I can't load external javascript, webpage or image? Here is the HTML source. (of course, I filled right [daum open API key])
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http:// www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <meta
http-equiv ="Content-Type" content="text/html;
charset=UTF-8"> <title>Daum 지도 API</title>
<script type="text/javascript"
src="http://apis.daum.net/maps/maps.js?
apikey=[daum open API key]" charset="utf-8"></script> </head> <body>
<div id="map" style="width:600px;
height:400px;
" style="border:1px solid #000">
</div> <img src="http://4.bp.blogspot.com/_2-7AdSkZA7I/RlCnDhD3ZfI/ AAAAAAAAE9U/LEHMtyVLdY8/s400/CutyTale10.jpg">
<img src="file:///android_asset/coffeebean.jpg">
<script type="text/javascript">
var map = new DMap("map", {point:new DLatLng(37.48879895934866, 127.03130020103005), level:2} );
</script> <iframe src="http://www.daum.com" width="300" height="150"></iframe> </body> </html>
and I use this Activity source
package bo.my.android.test;
import android.app.Activity;
import android.os.Bundle; import android.webkit.WebView;
public class OpenAPITest extends Activity {
WebView webView;
/** Called when the activity is first created. */
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.main);
webView = (WebView) findViewById(R.id.webView1);
webView.setWebViewClient(new DaumMapClient());
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("file:///android_asset/daummap.html");
//webView.loadUrl("http://www.daum.net");
} }
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May 8, 2012
how to program/write code on a "webview" in Android for loading a html file?
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Oct 19, 2010
I have a JS file that has functions to search a document for substrings. I want to access functions inside this file by passing parameters to it (the search keyword). I know we can use .loadUrl("javascript:~~~~~) but I'm not clear on how to do it using multiple functions.
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Jan 19, 2009
How to load simple html file present in sd mmc card from web browser. It is mentioned in the net that due to security reasons this is not allowed. Is there any way to access the file from sdcard? Tried modifying private String homeUrl =
"file:///sdcard/index.html";
in BrowserSettings.java file but browser throws an error "could not be loaded".
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Nov 19, 2009
Is there any way to load PDF file from Asset/URL in Browser or WebView or any other way?
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Sep 14, 2009
I have a WebView in my activity opening html file, containing a simple javascript. My problem is that the webview opens the html file, but doesn't execute the javascript. When i open the file from web browser, and not from my app, it executes the javascript correctly. What could be the difference? Are there any different settings for running javascript?
Here is my file:
CODE:.......
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Mar 22, 2010
In an android app I am using a tabview for an app and one of the tabs shows a webview. But the page is blank until the web page loads. how would one show a progress bar until the page loads. It cannot be in the title bar because that is hidden by the tabhost
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Apr 12, 2010
I have a JavaScript function which returns a value and i want to use that value in my Android program.
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Sep 17, 2010
I'd like to call a JavaScript function out of Java.
Well, the following source code works fine for me (http:// whyandroid.com/android/206-using-webviews.html):
This is not called on the UI thread. Post a runnable to invoke
CODE:............
My problem now is to use a parameter for the JavaScript function.
Let's assume I've got some XML (just like AJAX somehow).
I need to escape it just like the iPhone / Objective-C command stringByEvaluatingJavaScriptFromString does.
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Mar 4, 2009
I'm debugging a Javascript+HTML app. All the content is in ./assets.
The app works fine in Firefox, Safari and iPhone (over the web).
But in the WebView, I only get: D/WebCore (626): Console: undefined line: 0 source: undefined
I need to debug this code. Could I either: - enable more debugging in the WebView? though I think this needs to be done in the framework. or: - set up a desktop WebView equivalent where I can run a Javascript debugging tool?
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Jul 21, 2010
I want to get a return value from javascript in android. With Iphone, i can do it, but Android, i can't. I use loadUrl but return void not object.
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Aug 10, 2010
My android application displays webpages(i used webview for it). .but javascript onthe wepage is not running in a webview .If i visit the same webpage through the Browser,javascript is running . How to run javascript in an application(using a webview)?
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Nov 10, 2010
I open a webview page that page have:
CODE:.............
These javascript
When I press a button on the webview I have to read the "iPhoneStatus" value and close the webview screen and decide the result.
I wrote these codes in my .java class
CODE:..........
But it never go in the onJsAlert method, is there any way to evaluate the value of GetStatus()
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Jan 3, 2010
I used webView to show javaScript,one image was included in the javaScrip,but the webView not run the image on the contrary appear a "?"image.
My code:
CODE:..............
I put android_normal.png and android_waving.png in the assets and drawable folder
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Jun 3, 2010
My app uses a WebView widget to load ads from Google AdManager. AdManager gives you an HTML snippet, which is 90% javascript to call their server for the image to load.
I put their html snippet into a string and use String.format to add in several variables that AdManager requires.
I enable javascript on the WebView (webView.getSettings().setJavaScriptEnabled(true);)
I load the string into the WebView (webView.loadData(myString, "text/html", "UTF-8");
result: the ad never loads (although the WebViewClient shows serveral .js resources loading).
If I take that exact string and create a file and then use webView.loadUrl("file:///android_asset/test.html"), the image loads properly.
Why would loadUrl work but loadData does not?
I've verified that javascript is running. I injected a little script to write out a text string and it works.
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Sep 27, 2010
I am very new to both android webkit and javascript. I have a web page with 3 links (say A,B,C). When I open that page on my PC browser(Chrome), and click on the links, A opens in the same browser window whereas B and C pops up a new window. In my application I am loading the original URL in a WebView. I have implemented my WebViewClient and overridden the shouldOverrideUrlLoading. I am getting the call to shouldOverrideUrlLoading whenever I click on A, but not getting it when I click on B or C?
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Feb 9, 2010
I have this simple HTML that I load into an Android WebView (SDK version 1.5)-
<html>
<body onload="nomethod()">
<h1>Hello World</h1>
</body>
</html>
Function nomethod() doesn't exist but the LogCat doesn't display any error. It seems that any exception that isn't caught cannot be traced. how can I handle or trace uncaught exceptions?
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Jul 22, 2010
I put a webview in my application to visit a webpage which includes some javascript functions, my purpose is when users click a link in the webpage, it will start a new activity in the application. I've written "webSettings.setJavaScriptEnabled(true);" in my source codes.
It works well in most of the time, however sometimes it doesn't work, there is no response when users click, and I don't know why because the environment is not changed at all.
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Sep 25, 2010
I'm trying to very quickly port over an html application with plays sound (with soundmanager2) to a native android app using WebView. From my research, I haven't seen any evidence that sound, such as mp3s, can be played via javascript or any other methods using WebView.
My goal now is to quickly port over the html app and then eventually create a truely native application without using WebViews.
If anyone has been able to successfully implement playing audio using WebViews and Javascript or if this is just not possible at this time.
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Apr 6, 2009
I am writing a hybrid web/native app and ran into issue. My app downloads a music file via Java code, and needs to update a Javascript download progress bar in the WebView in real time.
My understanding is the only way to call Javascript from Java is via the WebView's loadUrl method.
CODE:................
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Sep 30, 2010
I have found that there is a significant lack of documentation of WebView's ability to communicate with Java via WebView.addJavaScript() method. First, the debug document http://developer.android.com/guide/developing/debug-tasks.html#Debugg... appears to no longer work. Second, what object types should we expect when going to and from JavaScript. I have done some trial and error and it appears that complex types can cross the boundary, for example java.util.Vector. However when a Java method returns a byte array to JavaScript it has a type of undefined and I have been unable to coerce it to any other type. Finally, there is great potential with this interface and with some more attention we could go far.
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Dec 1, 2009
Given that scripting is not natively supported in Android and wrapping libraries like javax.script.ScriptEngine into your app will make it too large, is it possible to send a javascript string to an invisible WebView and have it evaluate the string and return you the results (another string)?
I want to go this route because I want to save all my scripts to disk so my app can remain small.
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May 31, 2010
I am developing an application with Webview. The web app that runs inside the Webview is loaded from internet, and it is a single HTML file. I use javascript for showing and hiding the divs, depending on the section button the user had tapped on.
The problem is simple: after a little while (this time period seems to be random), javascript stops working inside the Webview object. Then, after a few seconds (10-30 seconds), javascript works again. It doesn't work any javascript. Nothing.
The strange thing is that the problem only happens when the application runs in a HTC Desire. I tested it in two different HTC Desire, and the problem happens in both devices. I tested it in a Motorola Milestone, in a HTC Hero and under emulator (1.5,1.6,2.1) and the application works fine, no error at all.
The problem happens using Wifi or mobile network.
I tried the debugger, but "Dev tools" crashes when I tap in "Development Settings". I also tried to compile the application for debugging under Eclipse, but adb does not show me info about the WebView object.
The HTC Desire firmware version is 2.1-update1. Kernel version: 2.6.29-3cb3dfbf. Build number: 1.15.161.4 Webkit 3.1
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Aug 29, 2010
I just downloaded the Dolphin Browser and every time I go to Facebook it loads the touch version and I want it to load the normal one is there a way to change this?
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May 12, 2009
I made a webview.addjavascriptinterface(geo, "geo"); to access the geo class from javascript, and, in the html-javascript I write: --------- function successCallback(p){ document.write("helo"); }
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Oct 31, 2010
I'm not highly familiar with javascript but I think this is the best way to accomplish my purpose. If not, please correct me. I have a licence text 2 buttons at the end. All of this is written in HTML in a WebView because there are some links in the licence. Now, I want that when the user clicks the "ok" button in the WebView, this triggers some javascript or listener that I can grab in Java to fire an Intent to go forward in the application. (The cancel button would do the opposite, but if I know how to do one, I can do the other. Does this rings any bell to someone? Any explanation or sample code is welcome.
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Jan 11, 2014
I am loading a webpage using WebView.. my code looks like this..
Code:
public void open() {
myWebViewV = new WebView(this);
setContentView(myWebViewV);
myWebViewV.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url){
view.loadUrl(url);
return true;
} });
myWebViewV.loadUrl("http://www.mywebsite.org");
}
what this simple code does is load the website that I want to view.. fine..
But this site also has things like "Reply", "Register", "Login" and etc..
I'm trying to change it so that the user has to click the buttons that I create for him/her that will do basically the same thing.
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Jul 8, 2009
I have put HTML document into a string variable and load it by using webView.loadDataWithBaseURL(null, htmlString, "text/html", "utf-8", null).
After that, I tried two ways and want to execute javascript function "exec()" by using
1. webView.loadDataWithBaseURL(null, "javascript:exec()", "text/ html", "utf-8", null) -> This will overlap the content of previous "htmlString" and shows "javascript:exec()" on the screen.
2. webView.loadUrl("javascript:exec()") -> There will be "Can't find variable: exec line: ..." in Logcat
I have tried to output "htmlString" to a file located in sdcard, and tried to use webView.loadUrl("file:///sdcard/xxx/a.xhtml") + webView.loadUrl("javascript:exec()").
And...it fails again! how to execute javascript function after loading html content by "loadDataWithBaseURL"?
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