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  • How, exactly does HTML5's GeoLocation work?

    - by Dan
    I know the browser shares my IP address and details of nearby wireless networks to determine my location, but what sort of info does it know about nearby wifi networks? For example, where I live are no public wireless networks, and from my home I can see about 5 private networks, yet my location is determined within 20 meters. With there being no open networks nearby, how does Google determine my location? The only way I can think of is that Google mapped the locations of all wireless networks when they mapped streets for Street View. I've searched about online, but all I can't find any specific details.

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  • Android Performance Question : Many small apps or one big app?

    - by kunjaan
    I read this quote in one of the webpages: If you are writing a large application, consider dividing it into a suite of applications and services. Smaller applications load faster and use fewer resources. Making a suite of applications, content providers, and services makes your code more open to incorporation into other applications as described the "Use and be used" tip. Is this true? What is the thumb rule for the size of app?

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  • Win32 api call via C# fails!

    - by user434186
    Hi. I have a C++ function exported as api like this: #define WIN322_API __declspec(dllexport) WIN322_API char* Test(LPSTR str); WIN322_API char* Test(LPSTR str) { return "hello"; } the function is exported as API correctly by the .DEF file, cause i can see it in Dependency Walker tool. Now i have a C# tester program: [DllImport("c:\\win322.dll")] public static extern string Test([MarshalAs(UnmanagedType.LPStr)] String str); private void Form1_Load(object sender, EventArgs e) { string _str = "0221"; Test(_str); // runtime error here! } on calling the Test() method i get the error: "A call to PInvoke function 'MyClient!MyClient.Form1::Test' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature." i tried many other data types and marshalings, but got nothing! plz help me!

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  • SEO: does google bot see text in hidden divs

    - by Alexey
    I have login/signup popups on my site which are in hidden div by default. According to http://stackoverflow.com/questions/1547426/google-seo-and-hidden-elements googlebot should NOT see it. But Google Webmaster tool says that keywords "email" and "password" are top keywords over the site. Why it is so? Why google bot sees them? Should I worry about relevancy of top keywords at all?

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  • Why is my launcher icon smaller when placed on the Android desktop?

    - by Richard
    I have an application built for 1.5 and I am adding higher resolution drawables to support hdpi devices in 1.6 and above. My original application icon is 48x48. I created a second launcher icon that is 72x72 and placed it in a res/drawable-hdpi/ directory. When I install the application on my Nexus One the icon looks good when I view it in the application menu. But when I place it on the desktop it appears small relative to other icons, my guess is I'm seeing the 48x48 version with no scaling. These are my two resource directories: res/drawable/appicon.png res/drawable-hdpi/appicon.png Do I need to do something differently either with my directory structure or my manifest file to get things to display correctly? Thanks!

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  • Switching Android SensorManager speed. What's a good practice?

    - by Johnson Tey
    Hello stackoverflow! I'm interested to switch between different sensor orientation speeds over time to optimize the program ie.. battery life. The routine may be called very often. I'm looking for the right practice. sensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE); sensorManager.registerListener(sensorListener, SensorManager.SENSOR_ORIENTATION, SensorManager.SENSOR_DELAY_FASTEST); //... 1) unregister then register new speed OR //... 2) register new speed without registering sensorManager.unregisterListener(sensorListener); Should I unregister the listener and then register with SensorManager.SENSOR_DELAY_NORMAL OR Should I not bother unregistering the listener? thanks.

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  • How can I launch a system command via Javascript in Google Chrome?

    - by kvsn
    I want to execute a local program on my computer via Javascript in Chrome. In Firefox, it can be done as follows (after setting 'signed.applets.codebase_principal_support' to true in about:config): function run_cmd(cmd, args) { netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); var file = Components.classes["@mozilla.org/file/local;1"] .createInstance(Components.interfaces.nsILocalFile); file.initWithPath(cmd); var process = Components.classes["@mozilla.org/process/util;1"] .createInstance(Components.interfaces.nsIProcess); process.init(file); process.run(false, args, args.length); } What's the equivalent code for Chrome?

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  • How to make a phone call in android and comes back to my activity when call is done

    - by hap497
    Hi, I am launching an activity to make a phone call, but when I pressed the 'end call' button, it does not go back to my activity. Can you please tell me how can I launch a call activity which comes back to me when 'End call' button is pressed? This is how I'm making the phone call: String url = "tel:3334444"; Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(url)); Thank you.

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  • Prevent default on a click within a JQuery tabs in Google Chrome.

    - by Sydney
    I would like to prevent the default behaviour of a click on a link. I tried the return false; also javascript:void(0); in the href attribute but it doesn’t seem to work. It works fine in Firefox, but not in Chrome and IE. I have a single tab that loads via AJAX the content which is a simple link. <script type="text/javascript"> $(function() { $("#tabs").tabs({ ajaxOptions: { error: function(xhr, status, index, anchor) { $(anchor.hash).html("Couldn't load this tab. We'll try to fix this as soon as possible. If this wouldn't be a demo."); }, success: function() { alert('hello'); $('#lk').click(function() { alert('Click Me'); return false; }); } }, load: function(event, ui) { $('a', ui.panel).click(function() { $(ui.panel).load(this.href); return false; }); } }); }); </script> <body> <div id="tabs"> <ul> <li><a href="linkChild.htm">Link</a></li> </ul> </div> </body> The content of linkChild.htm is <a href="javascript:void(0)" id="lk">Click Me</a> So basically when the tab content is loaded with success, a click event is attached to the link “lk”. When I click on the link, the alert is displayed but then link disappears. I check the HTML and the element is actually removed from the DOM.

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  • How can i get notifications from server to android device?

    - by Vaibs
    I am creating a app wherein user shares some information. This data i am storing it in database through servlets i.e. i am calling my own servlets which will take data through url and store it in database. So i want other users of that same app to get notify that some information is available and in turn they will get the information that other user has updated. For this to work we can use polling or pusher. But polling will take lots of battery power. I have tried C2DM but its not working for me. So i am thinking for some other mechanism by which i can implement other than C2DM. Please suggest some way to work it. and e.g. if u have came across.

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  • how to make my method running on the template of google-app-engine..

    - by zjm1126
    the model is : class someModel(db.Model): name = db.StringProperty() def name_is_sss(self): return self.name=='sss' the view is : a=someModel() a.name='sss' path = os.path.join(os.path.dirname(__file__), os.path.join('templates', 'blog/a.html')) self.response.out.write(template.render(path, {'a':a})) and the html is : {{ a.name_is_sss }} the page shows : True so i want to make it more useful, and like this: the model: class someModel(db.Model): name = db.StringProperty() def name_is_x(self,x): return self.name==x the html is : {% a.name_is_x 'www'%} or {{ a.name_is_x 'www'}} but the error is : TemplateSyntaxError: Invalid block tag: 'a.name_is_x' or TemplateSyntaxError: Could not parse the remainder: 'www' so how to make my method running thanks

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  • How to use custom color for each textview in listview that extends SimpleAdapter in Android ?

    - by mob-king
    I have a listview with custom rows and that extends SimpleAdapter. Each row consist of two linear layouts : 1st having two textviews of which one is hidden in horizontal orientation, second having two textviews in horizontal orientation. Now depending on the value in hidden textview , I want to setcolor for the remaining items for the row. To put it as simple: each listview item has some custom colors the value of which comes from the hidden field. I have done this by overriding getview() for the simpleadapter and returning view for each, but this makes list very slow to render (and that I think is obvious as so much of work for each view before showing it). Can I do this in some more efficient way ? like making views and then add up to list instead of using xml layout maybe one solution OR any other ? Any help ? Thanks.

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  • In an Android TextView, is it possible to insert paragraphs?

    - by johnrock
    Below is an example of the type of problem that I have. I have data in a pojo that I need to display in a textview... the data has pseudo code that denotes each paragraph with [p] I would like to somehow parse the [p]'s into paragraphs when they are displayed in the textview. Can this be done? Is there something I can substitute for the [p] that will make a new paragraph in the textview? Question question = new Question(); question.setText("Here is the first paragraph.[p] And this should be the second."); TextView view = (TextView) findViewById(R.id.qtext); view.setText(question.getParsedText());

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  • Alert dialog is gone before the user see anything

    - by Android Developer
    PopIt("Exit Application", "Are you sure you want to exit?"); public void PopIt( String title, String message ){ new AlertDialog.Builder(this) .setTitle( title ) .setMessage( message ) .setPositiveButton("YES", new OnClickListener() { public void onClick(DialogInterface arg0, int arg1) { //do stuff onclick of YES finish(); } }).setNegativeButton("NO", new OnClickListener() { public void onClick(DialogInterface arg0, int arg1) { //do stuff onclick of CANCEL Toast.makeText(getBaseContext(), "You touched CANCEL", Toast.LENGTH_SHORT).show(); } }).show(); } this alert dialog gone so fast as I cant read or click on it !! why is that ?

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  • Android; Confused by views?

    - by javano
    I have created a class (InputControl) which extends the view of my main class (Main), and takes focus of the screen. I have a button on the main xml layout which calls control() and sets up my InputControl view, from there I capture user input. How can I return back to the xml layout from the InputControl view class? public class Main extends Activity { public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); InputControl = new InputControl(this); } //......SNIP! public void control(){ setContentView(InputControl); InputControl.requestFocus(); } } public class InputControl extends View implements OnTouchListener { public InputControl(Context context) { super(context); setFocusable(true); setFocusableInTouchMode(true); this.setOnTouchListener(this); } public boolean onTouch(View view, MotionEvent event) { //...I AM CAPTURING USER TOUCH EVENTS HERE } }

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  • Android: Using MediaRecorder to crop an existing audio file?

    - by user141146
    Hi, I'd like to take an existing mp3 file located on an SD card and arbitrarily crop it (e.g. crop from 0:12 to 1:14 in a 3 minute song). The only class that I've seen that seems remotely relevant to do this is the MediaRecorder class. My 'hope' would be to "record" an existing file like this: MediaRecorder recorder = new MediaRecorder(); recorder.setAudioSource(###some magical way of specifying an existing file??###); But this obviously doesn't work (setAudioSource() takes an int and seems to default to the phone's microphone). Is there a class or an approach that can be used to crop audio on the phone itself? TKS!!

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  • How to disable the third zoom button in webview of Android ?

    - by mob-king
    I want to disable the third button that creates a rectangle to zoom in other than +/- buttons in my WebView which uses builtin zoom controls. How can I do that ? I am able to do this for WebView without using built-in zoom controls by myWebview.getZoomControls().getTouchables().get(2).setVisibility(View.INVISIBLE); But how to do the same for built-in zoom controls ? Also I am extending the WebView class and overriding the onTouchEvent for tracking touch events inside my WebView as this is not possible by default, since zoom buttons consumes the touch event.

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  • What if I change my Android App price to free and after i change idea?

    - by Skatephone
    Hi, i have read on the market support that "If you have previously published an application for free, you cannot change it to have a price." But I was wondering, if at the contrary I change my app from payed to free and some time after i want to re change it from free to payed! Can I? And if yes, Have I to wait some period (I have read something like this in the contract)? Tnk's Valerio From Italy

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