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  • gwt back button browser

    - by msaif
    for example current page is www.google.com. but i typed a different website address in address bar and clicked.This site has fully GWT code. but i like to back to the previous page of www.google.com. so i clicked back button of browser.but how can i get event of back button from current GWT code.Can i set any backbutton event handler in GWT of current page?? which notifies an alert to me that back button was pressed is there any solution from GWT??

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  • Android Developing App crashes on startup

    - by alexnavratil
    I currently develop an application which contains a custom ListView. I developed a custom array adapter. I think my app crashes here: ListView DirectoryView = (ListView) findViewById(R.id.fileListView); So i think the error is in the activity_main.xml: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ListView android:id="@+id/fileListView" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1" > </ListView> Here is my LogCat: 09-09 11:19:21.254: E/Trace(1152): error opening trace file: No such file or directory (2) 09-09 11:19:21.484: D/AndroidRuntime(1152): Shutting down VM 09-09 11:19:21.484: W/dalvikvm(1152): threadid=1: thread exiting with uncaught exception (group=0x40a13300) 09-09 11:19:21.504: E/AndroidRuntime(1152): FATAL EXCEPTION: main 09-09 11:19:21.504: E/AndroidRuntime(1152): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.teamdroid.explorer/com.teamdroid.explorer.MainActivity}: java.lang.NullPointerException 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread.access$600(ActivityThread.java:130) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.os.Handler.dispatchMessage(Handler.java:99) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.os.Looper.loop(Looper.java:137) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread.main(ActivityThread.java:4745) 09-09 11:19:21.504: E/AndroidRuntime(1152): at java.lang.reflect.Method.invokeNative(Native Method) 09-09 11:19:21.504: E/AndroidRuntime(1152): at java.lang.reflect.Method.invoke(Method.java:511) 09-09 11:19:21.504: E/AndroidRuntime(1152): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 09-09 11:19:21.504: E/AndroidRuntime(1152): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 09-09 11:19:21.504: E/AndroidRuntime(1152): at dalvik.system.NativeStart.main(Native Method) 09-09 11:19:21.504: E/AndroidRuntime(1152): Caused by: java.lang.NullPointerException 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.Activity.findViewById(Activity.java:1825) 09-09 11:19:21.504: E/AndroidRuntime(1152): at com.teamdroid.explorer.listDirectory.getDirectory(listDirectory.java:20) 09-09 11:19:21.504: E/AndroidRuntime(1152): at com.teamdroid.explorer.MainActivity.onCreate(MainActivity.java:33) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.Activity.performCreate(Activity.java:5008) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 09-09 11:19:21.504: E/AndroidRuntime(1152): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) 09-09 11:19:21.504: E/AndroidRuntime(1152): ... 11 more Please can you help me. I am searching this error for 2 day. thanks!

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  • Up to date, JPA compliant GenericDAO Implementation

    - by HDave
    I read this article: http://www.ibm.com/developerworks/java/library/j-genericdao.html several times and believe I understand what it is saying. However, it is 4 years old and I have a JPA compliant Java application to contend with. In addition, I see that there is a JPATemplate in Spring that has some good functionality, but the Spring documentation says it is already deprecated! Can anybody point me to a solid, modern, JPA compliant, Spring based, working example of a GenericDAOImpl that proxies an Interface to provide generic finder execution?

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  • Why not use PHP's built-in session handling?

    - by Dougal
    Is there currently - or has there ever been - any serious or significant problem with PHP's built-in session handling? I mean, it's always worked for me and my projects. But I see some codebases and frameworks out there seem to use a custom handler. Is this reinventing the wheel? Or improving on some flaws? What flaws?

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  • C# Event handling In mutiple level /classes

    - by Amitd
    Hi, I have 3 classes A,B,C . Class A creates B .. class B creates class C. Class C raises events after some action/operation with some data, which is handled by event handler in Class B. Now I want to be handle or pass the same raised event data to Class A. I know i can raise another event from class B and handle it in A but is there a better way of handling such events?? Thx

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  • WPF Best point to udpate a progress bar from backgorundworker

    - by toni
    Hi! I have a task that takes a long time executing. In order to inform about the progress to the user I have a progress bar that I update inside DoWork but I would like anybody tells me if it is the best way to update the progress bar. I have heard that there is a reportprogress event handler but I am confused because I don't know what is the utility of the ReportProgress. Thanks.

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  • How to use msdeploy and target a specific site?

    - by Chris Marisic
    When using msdeploy and the msdeploy.axd handler any attempts to deploy to my remote server is met with a 401 not authorized error and the server logs IISWMSVC_AUTHORIZATION_SERVER_NOT_ALLOWED Only Windows Administrators are allowed to connect using a server connection. Other users should use the 'Connect To Site or Application' task to be able to connect. Process:WMSvc What is the correct way to target the axd for the site level?

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  • What is the big deal with IQueryable?

    - by jjr2527
    I've seen a lot of people talking about IQueryable and I haven't quite picked up on what all the buzz is about. I always work with generic List's and find they are very rich in the way you can "query" them and work with them, even run LINQ queries against them. So I'm wondering if there is a good reason to start considering a different default collection in my projects.

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  • How can I import one Gradle script into another?

    - by Ant
    Hi all, I have a complex gradle script that wraps up a load of functionality around building and deploying a number of netbeans projects to a number of environments. The script works very well, but in essence it is all configured through half a dozen maps holding project and environment information. I want to abstract the tasks away into another file, so that I can simply define my maps in a simple build file, and import the tasks from the other file. In this way, I can use the same core tasks for a number of projects and configure those projects with a simple set of maps. Can anyone tell me how I can import one gradle file into another, in a similar manner to Ant's task? I've trawled Gradle's docs to no avail so far. Additional Info After Tom's response below, I thought I'd try and clarify exactly what I mean. Basically I have a gradle script which runs a number of subprojects. However, the subprojects are all Netbeans projects, and come with their own ant build scripts, so I have tasks in gradle to call each of these. My problem is that I have some configuration at the top of the file, such as: projects = [ [name:"MySubproject1", shortname: "sub1", env:"mainEnv", cvs_module="mod1"], [name:"MySubproject2", shortname: "sub2", env:"altEnv", cvs_module="mod2"] ] I then generate tasks such as: projects.each({ task "checkout_$it.shortname" << { // Code to for example check module out from cvs using config from 'it'. } }) I have many of these sort of task generation snippets, and all of them are generic - they entirely depend on the config in the projects list. So what I want is a way to put this in a separate script and import it in the following sort of way: projects = [ [name:"MySubproject1", shortname: "sub1", env:"mainEnv", cvs_module="mod1"], [name:"MySubproject2", shortname: "sub2", env:"altEnv", cvs_module="mod2"] ] import("tasks.gradle") // This will import and run the script so that all tasks are generated for the projects given above. So in this example, tasks.gradle will have all the generic task generation code in, and will get run for the projects defined in the main build.gradle file. In this way, tasks.gradle is a file that can be used by all large projects that consist of a number of sub-projects with Netbeans ant build files.

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  • How can I access the JavaScript global object ("window") inside an embedded browser object (the IWebBrowser2 interface)?

    - by John Factorial
    I have an HTML page which embeds an IWebBrowser2 ActiveX (i.e. the control is essentially an Internet Explorer browser). I need to write JavaScript in this HTML page which will remove any window.onresize handler from the page loaded in the IWebBrowser2 control. IWebBrowser2 exposes the DOM through IWebBrowser2::Document, but this is equivalent to window.document. Is there any way I can get access to window or window.onresize?

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  • Closures in Java 7

    - by Schildmeijer
    I have heard that closures could be introduced in the next Java standard that is scheduled to be released somewhere around next summer. What would this syntax look like? I read somewhere that introducing closures in java is a bigger change than generic was in java 5. Is this true? pros and cons? (By now we definitely know that closures not will be included in the next Java release) OR edit: http://puredanger.com/tech/2009/11/18/closures-after-all/ :D

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  • Gridview - Is it necessary to grab data from database every time a filter, sort, or paging event occ

    - by hamlin11
    Regarding gridviews that are not bound to a Data Source Control: In most GridView tutorials that I have seen, when just about any GridView event occurs, the end of the event handler will include BindDataGrid(). In some form, these BindDataGrid() functions 1) Grab data from the database 2) Assign any Filter or Sort expressions to the data, and 3) Bind the gridview to that data source (usually a DataView or DataTable. Is there a better way to provide filterable & sortable data to a GridView without having to hit the database so often? Thanks

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  • Inline instantiation of a constant List

    - by Roflcoptr
    I try to do something like this: public const List<String> METRICS = new List<String>() { SourceFile.LOC, SourceFile.MCCABE, SourceFile.NOM, SourceFile.NOA, SourceFile.FANOUT, SourceFile.FANIN, SourceFile.NOPAR, SourceFile.NDC, SourceFile.CALLS }; But unfortunately this doesn't work: FileStorer.METRICS' is of type 'System.Collections.Generic.List<string>'. A const field of a reference type other than string can only be initialized with null. How can I solve this problem?

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  • Best way to handle global state

    - by David
    Hi there, I was wondering if anyone could offer some advice on 'best practices' for using global state in a web application - specifically PHP, although im looking for generic best practices i.e. design patterns etc. At the moment I just use a static class, calling it Configs. I suppose this is similar to using the registry pattern but surely there is a more elegant way of handling global data within an application - i just cant think of a better way though.

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  • How do I create a strongly typed BeginForm?

    - by itchi
    I've seen a few examples of people using this syntax for HTML.BeginForm: (Html.BeginForm<Type>(action => action.ActionName(id))) But when I try this syntax all I get is a: The non-generic method System.Web.Mvc.Html.FormExtensions.BeginForm(System.Web.Mvc.HtmlHelper)' cannot be used with type arguments What am I missing?

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  • Error while creating tests in Visual Studio

    - by Benjol
    When I try to generate a unit test for the following method (in a public static class) private static string[] GetFields(string line, char sep) { char[] totrim = { '"', ' ' }; return line.Split(sep).Select(col => col.Trim(totrim)).ToArray(); } The Tests output says: While trying to generate your tests, the following errors occurred: This method or property cannot be called within an event handler. It works if I make the function public - I've tried running Publicize.exe manually, it doesn't complain, but doesn't make any difference either.

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  • AMFPHP Database Sessions

    - by Rick
    I am using AMFPHP w/ a Flex application and am needing to start storing the user sessions in the database instead of the filesystem. I've tried utilizing the session save handler function but no matter what I do it still ends up storing the files on the filesystem. Any ideas?

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  • how to acess and change variable of kernel space from user space

    - by bhavin
    i, I have posted query previously and i am repeating same I want to modify igmpv3 (Linux) which is inbuilt in kernel2.6.-- such that it reads a value from a file and appropriately decides reserved(res 1) value inside the igmpv3 paket which is sent by a host. I want to add more to above question by saying that this is more a generic question of changing variable of kernel space from user space. Thanks in advance for your help. Regards, Bhavin

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  • error to send SMS

    - by deni
    i have a problem with that code.. i got a error when i execute CommSetting.comm.SendMessage(pdu); the error is Phone reports generic communication error or syntax error can u tell me how to solve my problem?? thx i develop with c#, VS 2008

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  • Client Templates and Ajax 4.0 And Urls

    - by RubbleFord
    Client Templating And URL's Title is required Im trying to output <a href="{{ link }}">click me</a> the data in question is spotify:track:0ucyXpQG7xL8ipoyU0Ts3A , once I remove the ":" the link comes through, any ideas on this one? As you can probably guess I'm trying to trigger the spotify protocol handler.

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  • Accessing the MSP and PSP registers of the Cortex-M3 in C/C++ code using Keil's µVision

    - by Captain NedD
    I need to access the MSP and PSP registers (the main and process stack registers) of the Cortex-M3 processor. I'm writing in C/C++. The µVision and associated compiler doesn't let you do inline assembly for this Thumb-2 only core (and I'm not sure that'd be such a good idea anyway). I need to do this so that I can extract the immediate value of an svc instruction regardless of whether it was executed while in thread or handler mode. Thanks,

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  • Dynamic find methods Vs conditional statements in rails

    - by piemesons
    Hello Student.find_all_by_name_and_status(‘mohit’, 1) As this will create a exception 'No method exception' first then it will be handled by dynamic Method handler and this will not Student.find(:all, :conditions => [‘name = ? and status = ?’ ‘mohit’, 1]) Does Student.find(1) Will generate method missing exception and will it prevent SQL injection?

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