Develop Reference

How can I request to open an URL without opening the webbrowser?

#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void onClick(View v) {
mScannerView = new ZXingScannerView(this);
setContentView(mScannerView);
mScannerView.setResultHandler(this);
mScannerView.startCamera();
}
#Override
protected void onPause() {
super.onPause();
mScannerView.stopCamera();
}
#Override
public void handleResult(final Result result) {
//Do anything with result here :D
Log.w("handleResult", result.getText());
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Scan result");
builder.setMessage(result.getText());
AlertDialog alertDialog = builder.create();
alertDialog.show();
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(result.getText().toString()));
startActivity(browserIntent);
mScannerView.resumeCameraPreview(this);
}
}
I want to directly open the URL once scanning is done and then reopen the camera. Can anyone please help me ?

Use a webview load the URL like below:
webView= (WebView) findViewById(R.id.webview);
webView.setWebChromeClient(new WebChromeClient());
webView.setWebViewClient(new WebViewClient());

Try and create your own activity to handle request to open URL .
When I started learning about android and its intents I found it very confusing. But category BROWSABLE in the Manifest does the following.
The target activity can be safely invoked by the browser to display data referenced by a link — for example, an image or an e-mail message.
Read more on: http://developer.android.com/guide/components/intents-filters.html
The two other answers opens the standard web browser and goes to the address specified. If you want a custom browser make the second activity like a web view like this example.

Calling Java method in Android from JavaScript using webview

I'm trying to access my Java method helloWorld(); using JavaScriptInterface in Android, from the page I'm viewing using WebView
I'm a little new to this, and I don't know why I'm not getting the value to my html page
This is the Android code I'm using:
WebView web;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
web = (WebView) findViewById(R.id.webview01);
JavaScriptInterface jsInterface = new JavaScriptInterface(this);
web.getSettings().setJavaScriptEnabled(true);
web.addJavascriptInterface(jsInterface, "JSInterface");
web.getSettings().setUseWideViewPort(true);
web.getSettings().setLoadWithOverviewMode(true);
web.setWebViewClient(new myWebClient());
web.getSettings().setJavaScriptEnabled(true);
web.loadUrl("http://exampleweb:10110/exWeb/deposits.jsp");
}
public class myWebClient extends WebViewClient
{
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// TODO Auto-generated method stub
super.onPageStarted(view, url, favicon);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// TODO Auto-generated method stub
view.loadUrl(url);
return true;
}
}
public class JavaScriptInterface {
private Activity activity;
public JavaScriptInterface(Activity activity) {
this.activity = activity;
}
#JavascriptInterface
public String helloWorld(){
return("hello world");
}
}
}
This is the JavaScript code I've been using (on the page I'm viewing with WebView)
HTML button
<td> <button type="button" class="btn btn-xs btn-primary connectToAndroid">Test android</button></td>
JavaScript
$(".connectToAndroid").on('click', function () {
var val = window.JSInterface.helloWorld();
alert(val);
});
Does anyone know what I'm doing wrong here? I just want to alert an "Hello World" from android in my HTML page.
Any pointers are greatly appreciated!

Try by adding this line of code before loading the url and make sure you reference your jQuery library in the html.
web.setWebChromeClient(new WebChromeClient(this));

This is very weird, I tried using this a couple of hours ago:
$(".connectToAndroid").on('click', function () {
var val = Android.helloWorld();
alert(val);
});
Then I changed it, it didn't say Android anymore,
yet I kept getting an error saying:
Uncaught ReferenceError: Android is not defined
And after a while I figured, Android.helloWorld(); must be cached somehow in my webview app or something.
So, I changed back to this:
$(".connectToAndroid").on('click', function () {
var val = Android.helloWorld();
alert(val);
});
And added this:
web.addJavascriptInterface(jsInterface, "Android");
And now it works like a charm, as it should have from the beginning if it wasn't for some cache somewhere,
Can anyone explain why this happens? Does android webview actually cache javascript code? And can I prevent this behaviour in the future somehow? Cache bothers a lot when coding/testing new stuff.

Inject JavaScript before html loaded with Android WebView

I am using Android WebView to load a simple HTML page. The HTML depends on a tiny piece of Javascript code.
I need to inject the Javascript before html loaded. So I do it like this:
public class MainActivity extends Activity {
WebView mWebView;
Button mButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mWebView = (WebView)findViewById(R.id.webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.setWebChromeClient(new WebChromeClient(){
#Override
public boolean onJsAlert(WebView view, String url, String message,JsResult result) {
return super.onJsAlert(view, url, message, result);
}
});
mButton = (Button)findViewById(R.id.button);
mButton.setOnClickListener(new myListener());
}
class myListener implements OnClickListener{
int mCount = 1;
#Override
public void onClick(View arg0) {
System.out.println("Load test page=>"+mCount+" times");
mWebView.loadUrl("javascript:var output='This string is defined before html loaded.'");
mWebView.loadUrl("file:///android_asset/test.html");
mCount++;
}
}
}
HTML code:
<html>
<head>
<script>
alert(output);
</script>
<head>
<body>
</body>
</html>
The JS and HTML works fine when I click the button first time. But when I click the button to execute the load again, it failed.
Logs:
Load test page=>1 times
Load test page=>2 times
Uncaught ReferenceError: output is not defined at file:///android_asset/test.html:5
Load test page=>3 times
Uncaught ReferenceError: output is not defined at file:///android_asset/test.html:5
Any suggestion?

This may seem like a long-winded approach, but could you have your android code write the js code to a file, then reference that file in your html file?

webview don't display javascript windows.open()

I have a WebView in which i display web content which i have no control over. The content displays fine, but have links which spawn a popup window. The javascript function that does that looks like this:
function getEntry(id) {
var win = window.open('', 'Booking',
'resizable=yes,scrollbars=yes,status=no,width=500,height=400');
win.document.location = '/some/url/1-' + id ;
}
I can't easily change this, and if the people responsible for the page i download would change it, i guess my app would fail miserably...
My WebView setup in the activity looks like this:
_webview = new WebView(this);
setContentView(_webview);
final Activity activity = this;
_chromeClient = new MyChromeClient();
_webview.setWebChromeClient(_chromeClient);
//I experimented with changing user agent, in case that would have any effect, it didn't...
_webview.getSettings().setUserAgentString("Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1");
_webview.setWebViewClient(new MyWebViewClient());
_webview.getSettings().setJavaScriptEnabled(true);
_webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
_webview.getSettings().setSupportZoom(true);
_webview.getSettings().setBuiltInZoomControls(true);
_webview.getSettings().setDomStorageEnabled(true);
//Cache settings...
_webview.getSettings().setAppCacheMaxSize(1024*1024*8);
_webview.getSettings().setAppCachePath("/data/data/com.your.package.appname/cache");
_webview.getSettings().setAllowFileAccess(true);
_webview.getSettings().setAppCacheEnabled(true);
MyWebClient:
private class MyWebViewClient extends WebViewClient {
#Override
public void onLoadResource(WebView view, String url) {
Log.d("MyWebViewClient",url);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
showProgressDiag();
Log.d("MyWebViewClient","shouldOverride... : " + url);
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url){
hideProgressDiag();
}
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
if(failingUrl.equals("file:///android_asset/html/error.html")){
hideProgressDiag();
Toast.makeText(_context, "Error! Check internet connection, or try again later...", Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(_context, failingUrl, Toast.LENGTH_SHORT).show();
view.loadUrl("file:///android_asset/html/error.html");
}
}
}
MyChromeClient:
private class MyChromeClient extends WebChromeClient{
#Override
public void onProgressChanged(WebView view, int progress) {
Pdiag.setProgress(progress * 100);
}
}
When clicking one of the links that points to the javascript function all that happens is that the WebView turns grey, without going through shouldOverrideUrlLoading(). When i hit the back key the app exits, meaning that nothing was placed in the nav history of the WebView. Sometimes nothing happens, but then the shouldOverrideUrlLoading() do run and from a Log.d() i can see that the correct URL for the popup has been given to the WebView.
The thing is, on very rare occasions it shows up fine, but i have no clue how to reproduce it, and wether it actually shows in a popup.
I'm lost... And quite frustrated... Thinking of watching a bad sitcom instead :(
EDIT:
Actually, maybe the URL wasn't all that correct after all... In Firefox the URL ends with "X<<<<" but in my Log.d() output it ends with "X%3C%3C%3C%3C"... I'll investigate if i could change that...
EDIT 2:
Nope, didn't do anything... The URL is identical to the one in Firefox...

First of all, you need to set the following settings on your WebView:
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
webSettings.setSupportMultipleWindows(true);
Then you need to attach a WebChromeClient that overrides onCreateWindow. Your implementation of this method can create a new web view, and display it inside a dialog:
webView.setWebChromeClient(new WebChromeClient() {
#Override
public boolean onCreateWindow(WebView view, boolean isDialog, boolean isUserGesture, Message resultMsg) {
WebView newWebView = new WebView(MyActivity.this);
WebSettings webSettings = newWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
// Other configuration comes here, such as setting the WebViewClient
final Dialog dialog = new Dialog(MyActivity.this);
dialog.setContentView(newWebView);
dialog.show();
newWebView.setWebChromeClient(new WebChromeClient() {
#Override
public void onCloseWindow(WebView window) {
dialog.dismiss();
}
});
((WebView.WebViewTransport)resultMsg.obj).setWebView(newWebView);
resultMsg.sendToTarget();
return true;
}
});
Don't forget to set the new web view to the resultMsg, send it to its target and return true, as mentioned in the API documentation.

Please check with adding this -
getSettings().setSupportMultipleWindows(true);

Javascript not working in loadDataWithBaseURL Android

I am trying to display a webpage using webView. I use loadDataWithBaseUrl to display the webpage.
webView = (WebView) findViewById(R.id.webview);
WebSettings settings=webView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setJavaScriptCanOpenWindowsAutomatically(true);
webView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress)
{
(activity).setTitle("Loading...");
(activity).setProgress(progress * 100);
if(progress == 100)
activity.setTitle(R.string.app_name);
}
});
webView.setWebViewClient(new WebViewClient() {
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl)
{
}
});
String s= "file://"+f.getAbsolutePath()+"/";
webView.loadDataWithBaseURL(BASE_URL,HTMLData, "text/html", "utf-8","");
The problem I am facing is that the javascript on the page which should have been called on onLoad is not being run. The browser displays the webpage correctly. Also, the loadUrl method gives the correct results. Please suggest a possible solution.
Edit: I got it sorted out. The javascript file had an error. Please ignore.