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• Android Get Image Uri from Camera

  - by josnidhin

  Hi I have an application that calls the android phone's default camera to take photo the following is my code. Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(intent, TAKE_PICTURE); and in the onActivityResult method I am doing the following if ((requestCode == TAKE_PICTURE) && (resultCode == Activity.RESULT_OK)) { Uri photoPath = intent.getData(); // do something with the uri here } The above code works fine on htc Tatto and Sony ericsson's x10 running 1.6 but in on htc G1 running 1.6 the above code causes the following exception 03-08 18:54:25.906: ERROR/AndroidRuntime(4344): Uncaught handler: thread main exiting due to uncaught exception 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { act=inline-data (has extras) }} to activity removed java.lang.NullPointerException 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at android.app.ActivityThread.deliverResults(ActivityThread.java:3224) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3266) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at android.app.ActivityThread.access$2600(ActivityThread.java:116) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1823) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at android.os.Handler.dispatchMessage(Handler.java:99) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at android.os.Looper.loop(Looper.java:123) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at android.app.ActivityThread.main(ActivityThread.java:4203) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at java.lang.reflect.Method.invokeNative(Native Method) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at java.lang.reflect.Method.invoke(Method.java:521) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at dalvik.system.NativeStart.main(Native Method) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): Caused by: java.lang.NullPointerException 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at removed 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at android.app.Activity.dispatchActivityResult(Activity.java:3624) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): at android.app.ActivityThread.deliverResults(ActivityThread.java:3220) 03-08 18:54:25.966: ERROR/AndroidRuntime(4344): ... 11 more Any insights into how to solve this problem. Thank you.

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• LINQ To SQL ignore unique constraint exception and continue

  - by Martin

  I have a single table in a database called Users Users ------ ID (PK, Identity) Username (Unique Index) I have setup a unique index on the Username table to prevent duplicates. I am then enumerating through a collection and creating a new user in the database for each item. What I want to do is just insert a new user and ignore the exception if the unique key constraint is violated (as it's clearly a duplicate record in that case). This is to avoid having to craft where not exists kind of queries. First off, is this going to be any more efficient or should my insert code be checking for duplicates instead? I'm drawn more to the database having that logic as this prevents any other type of client from inserting duplicate data. My other issue is related to LINQ To SQL. I have the following code: public class TestRepo { DatabaseDataContext database = new DatabaseDataContext(); public void Add(string username) { database.Users.InsertOnSubmit(new User() { Username = username }); } public void Save() { database.SubmitChanges(); } } And then I iterate over a collection and insert new users, ignoring any exceptions: TestRepo repo = new TestRepo(); foreach (var name in new string[] { "Tim", "Bob", "John" }) { try { repo.Add(name); repo.Save(); } catch { } } The first time this is run, great I have three users in the table. If I remove the second one and run this code again, nothing is inserted. I expected the first insert to fail with the exception, the second to succeed (as I just removed that item from the DB) and the third to then fail. What seems to be happening is that once the SqlException is thrown (even though the loop continues to iterate) all of the next inserts fail - even when there isn't a row in the table that would cause a unique violation. Can anyone explain this? P.S. The only workaround I could find was to instantiate the repo each time before the insert, then it worked exactly as excepted - indicating that it's something to do with the LINQ To SQL DataContext. Thanks.

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• How to implement progress bar and backgroundworker for database calls C#?

  - by go-goo-go

  How to implement progress bar and backgroundworker for database calls C#? I do have some methods that deal with large amounts of data. They do last a lot, so in my windows application, i wanna do something to tell users that the data are being processed. So i thought of using progress bar or status strip label, but since there is a single ui thread, the thread where the database-dealing methods are executed, ui controls are not updated, so progress bar or status strip label are useless to me. I've already seen some examples, but they deal with for-loops, ex: for(int i = 0; i < count; i++){ System.Threading.Thread.Sleep(70); // ... do analysis ... bgWorker.ReportProgress((100 * i) / count);} private void bgWorker_ProgressChanged(object sender, ProgressChangedEventArgs e){ progressBar.Value = Math.Min(e.ProgressPercentage, 100);} Can anybody give an example where I can use a method call, not a for-loop, and let the progress bar run while this method is executing??? thnx in advance, any help and hint is highly appreciated.

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• Android: AdWhirl cannot find AdMobAdapter

  - by Stefan Klumpp

  Using AdMob by itself works perfectly. Using AdMob through AdWhirl causes the following problem: 23114 dalvikvm I Failed resolving Lcom/adwhirl/adapters/AdMobAdapter; interface 144 'Lcom/admob/android/ads/AdListener;' 23114 dalvikvm W Link of class 'Lcom/adwhirl/adapters/AdMobAdapter;' failed 23114 dalvikvm E Could not find class 'com.adwhirl.adapters.AdMobAdapter', referenced from method com.adwhirl.adapters.AdWhirlAdapter.getAdapter 23114 dalvikvm W VFY: unable to resolve new-instance 172 (Lcom/adwhirl/adapters/AdMobAdapter;) in Lcom/adwhirl/adapters/AdWhirlAdapter; 23114 dalvikvm D VFY: replacing opcode 0x22 at 0x0012 23114 dalvikvm D Making a copy of Lcom/adwhirl/adapters/AdWhirlAdapter;.getAdapter code (229 bytes) 23114 dalvikvm I Failed resolving Lcom/adwhirl/adapters/QuattroAdapter; interface 524 'Lcom/qwapi/adclient/android/view/AdEventsListener;' 23114 dalvikvm W Link of class 'Lcom/adwhirl/adapters/QuattroAdapter;' failed 23114 dalvikvm E Could not find class 'com.adwhirl.adapters.QuattroAdapter', referenced from method com.adwhirl.adapters.AdWhirlAdapter.getAdapter 23114 dalvikvm W VFY: unable to resolve new-instance 177 (Lcom/adwhirl/adapters/QuattroAdapter;) in Lcom/adwhirl/adapters/AdWhirlAdapter; 23114 dalvikvm D VFY: replacing opcode 0x22 at 0x002c 23114 AndroidRuntime D Shutting down VM 23114 dalvikvm W threadid=3: thread exiting with uncaught exception (group=0x4001b180) 23114 FlurryAgent D Ending session 23114 LocationManager D removeUpdates: listener = com.flurry.android.FlurryAgent@4496be70 23114 AndroidRuntime E Uncaught handler: thread main exiting due to uncaught exception 23114 AndroidRuntime E java.lang.NoClassDefFoundError: com.adwhirl.adapters.AdMobAdapter 23114 AndroidRuntime E at com.adwhirl.adapters.AdWhirlAdapter.getAdapter(AdWhirlAdapter.java:39) 23114 AndroidRuntime E at com.adwhirl.AdWhirlLayout.handleAd(AdWhirlLayout.java:154) 23114 AndroidRuntime E at com.adwhirl.AdWhirlLayout.access$0(AdWhirlLayout.java:143) 23114 AndroidRuntime E at com.adwhirl.AdWhirlLayout$1.run(AdWhirlLayout.java:87) 23114 AndroidRuntime E at android.os.Handler.handleCallback(Handler.java:587) 23114 AndroidRuntime E at android.os.Handler.dispatchMessage(Handler.java:92) 23114 AndroidRuntime E at android.os.Looper.loop(Looper.java:123) 23114 AndroidRuntime E at android.app.ActivityThread.main(ActivityThread.java:4363) 23114 AndroidRuntime E at java.lang.reflect.Method.invokeNative(Native Method) 23114 AndroidRuntime E at java.lang.reflect.Method.invoke(Method.java:521) 23114 AndroidRuntime E at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 23114 AndroidRuntime E at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 23114 AndroidRuntime E at dalvik.system.NativeStart.main(Native Method) Any ideas?

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• Reading non-standard elements in a SyndicationItem with SyndicationFeed

  - by Jared

  With .net 3.5, there is a SyndicationFeed that will load in a RSS feed and allow you to run LINQ on it. Here is an example of the RSS that I am loading: <rss version="2.0" xmlns:media="http://search.yahoo.com/mrss/"> <channel> <title>Title of RSS feed</title> <link>http://www.google.com</link> <description>Details about the feed</description> <pubDate>Mon, 24 Nov 08 21:44:21 -0500</pubDate> <language>en</language> <item> <title>Article 1</title> <description><![CDATA[How to use StackOverflow.com]]></description> <link>http://youtube.com/?v=y6_-cLWwEU0</link> <media:player url="http://youtube.com/?v=y6_-cLWwEU0" /> <media:thumbnail url="http://img.youtube.com/vi/y6_-cLWwEU0/default.jpg" width="120" height="90" /> <media:title>Jared on StackOverflow</media:title> <media:category label="Tags">tag1, tag2</media:category> <media:credit>Jared</media:credit> <enclosure url="http://youtube.com/v/y6_-cLWwEU0.swf" length="233" type="application/x-shockwave-flash"/> </item> </channel> When I loop through the items, I can get back the title and the link through the public properties of SyndicationItem. I can't seem to figure out how to get the attributes of the enclosure tag, or the values of the media tags. I tried using SyndicationItem.ElementExtensions.ReadElementExtensions<string>("player", "http://search.yahoo.com/mrss/") Any help with either of these?

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• phpexcel write excel and save ?

  - by boss

  code: <?php /** PHPExcel */ require_once '../Classes/PHPExcel.php'; /** PHPExcel_IOFactory */ require_once '../Classes/PHPExcel/IOFactory.php'; // Create new PHPExcel object $objPHPExcel = new PHPExcel(); // Set properties $objPHPExcel->getProperties()->setCreator("Maarten Balliauw") ->setLastModifiedBy("Maarten Balliauw") ->setTitle("Office 2007 XLSX Test Document") ->setSubject("Office 2007 XLSX Test Document") ->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.") ->setKeywords("office 2007 openxml php") ->setCategory("Test result file"); $result = 'select * from table1'; for($i=0;$i<count($result);$i++){ $result1 = 'select * from table2 where table1_id = ' . $result[$i]['table1_id']; for ($j=0;$j<count($result1);$j++) { $objPHPExcel->setActiveSheetIndex(0)->setCellValue('A' . $j, $result1[$j]['name']); } // Set active sheet index to the first sheet, so Excel opens this as the first sheet $objPHPExcel->setActiveSheetIndex(0); // Save Excel 2007 file $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007'); $objWriter->save(str_replace('.php', '.xlsx', __FILE__)); // Echo done echo date('H:i:s') . " Done writing file.\r\n"; } ?> The above code executes and save n no of .xlsx files in the folder, but the problem im getting is biggest count(result1) in the for loop executing in all saved excel files. Please give me the solution.

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• java client program to send digest authentication request using HttpClient API

  - by Rajesh

  I have restlet sample client program which sends the digest request. Similar to this I need java client program which sends a digest request using HttpClient api. Can anybody send me sample code. Thanks in advance. Reference reference = new Reference("http://localhost:8092/authenticate"); Client client = new Client(Protocol.HTTP); Request request = new Request(Method.GET, reference); Response response = client.handle(request); System.out.println("response: "+response.getStatus()); Form form = new Form(); form.add("username", "rajesh"); form.add("uri", reference.getPath()); // Loop over the challengeRequest objects sent by the server. for (ChallengeRequest challengeRequest : response .getChallengeRequests()) { // Get the data from the server's response. if (ChallengeScheme.HTTP_DIGEST .equals(challengeRequest.getScheme())) { Series<Parameter> params = challengeRequest.getParameters(); form.add(params.getFirst("nonce")); form.add(params.getFirst("realm")); form.add(params.getFirst("domain")); form.add(params.getFirst("algorithm")); form.add(params.getFirst("qop")); } } // Compute the required data String a1 = Engine.getInstance().toMd5( "rajesh" + ":" + form.getFirstValue("realm") + ":" + "rajesh"); String a2 = Engine.getInstance().toMd5( request.getMethod() + ":" + form.getFirstValue("uri")); form.add("response", Engine.getInstance().toMd5( a1 + ":" + form.getFirstValue("nonce") + ":" + a2)); ChallengeResponse challengeResponse = new ChallengeResponse( ChallengeScheme.HTTP_DIGEST, "", ""); challengeResponse.setCredentialComponents(form); // Send the completed request request.setChallengeResponse(challengeResponse); response = client.handle(request); // Should be 200. System.out.println(response.getStatus());

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• how to get all group images in facebook using FACEBOOK API

  - by From.ME.to.YOU

  Hello i'm trying to get all the images from a facebook group using facebook API i have a problem i can't get all the photos using $facebook->api_client->call_method('Photos.get', array('subj_id' => $uid)); http://wiki.developers.facebook.com/index.php/Photos.get what i'm using now is the method $albums = $facebook->api_client->photos_getAlbums($uid, NULL); http://wiki.developers.facebook.com/index.php/Photos.getAlbums and then loop for ever album on $facebook->api_client->call_method('Photos.get', array('subj_id' => $uid)); then i add every new array results to my big array $big_array = array_merge($big_array,$result_array_from_that_call); 2 problems occurs here : 1- sometimes this calls fails - i think because of too many calls per second - 2- the request takes a v.long time to process is there a better way to do that? Thanks guys Cheers EDIT :: i tried to get all the images using $facebook->api_client->call_method('Photos.get', array('subj_id' => $uid)); and using $uid as the group ID but that's doesn't work " don't know why maybe because all the images is listed in groups "

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• Android SQLite database gets corrupted

  - by Seu

  There are about 100 people using my Android App right now and every once and while I get a crash report to the server with this stack trace: android.database.sqlite.SQLiteDatabaseCorruptException: database disk image is malformed at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2596) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2621) at android.app.ActivityThread.access$2200(ActivityThread.java:126) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1932) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:123) at android.app.ActivityThread.main(ActivityThread.java:4595) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:521) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) at dalvik.system.NativeStart.main(Native Method) Caused by: android.database.sqlite.SQLiteDatabaseCorruptException: database disk image is malformed at android.database.sqlite.SQLiteQuery.native_fill_window(Native Method) at android.database.sqlite.SQLiteQuery.fillWindow(SQLiteQuery.java:75) at android.database.sqlite.SQLiteCursor.fillWindow(SQLiteCursor.java:295) at android.database.sqlite.SQLiteCursor.getCount(SQLiteCursor.java:276) at android.database.AbstractCursor.moveToPosition(AbstractCursor.java:171) at android.database.AbstractCursor.moveToFirst(AbstractCursor.java:248) The result is the app crashing and all the data in the DB being lost. One thing to note is that every time I read or write to the database I get a new SQLiteDatabase and close it as soon as I'm done. I thought this would simplify things, but perhaps that's causing the problem? Is it possible this is just a SQLite bug?

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• Code Golf: Collatz Conjecture

  - by Earlz

  Inspired by http://xkcd.com/710/ here is a code golf for it. The Challenge Given a positive integer greater than 0, print out the hailstone sequence for that number. The Hailstone Sequence See Wikipedia for more detail.. If the number is even, divide it by two. If the number is odd, triple it and add one. Repeat this with the number produced until it reaches 1. (if it continues after 1, it will go in an infinite loop of 1 -> 4 -> 2 -> 1...) Sometimes code is the best way to explain, so here is some from Wikipedia function collatz(n) show n if n > 1 if n is odd call collatz(3n + 1) else call collatz(n / 2) This code works, but I am adding on an extra challenge. The program must not be vulnerable to stack overflows. So it must either use iteration or tail recursion. Also, bonus points for if it can calculate big numbers and the language does not already have it implemented. (or if you reimplement big number support using fixed-length integers) Test case Number: 21 Results: 21 -> 64 -> 32 -> 16 -> 8 -> 4 -> 2 -> 1 Number: 3 Results: 3 -> 10 -> 5 -> 16 -> 8 -> 4 -> 2 -> 1 Also, the code golf must include full user input and output.

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• Strings in array are no longer strings after jQuery.each()

  - by Álvaro G. Vicario

  I'm pretty confused with the behaviour of arrays of strings when I loop them through the jQuery.each() method. Apparently, the strings become jQuery objects inside the callback function. However, I cannot use the this.get() method to obtain the original string; doing so triggers a this.get is not a function error message. I suppose the reason is that it's not a DOM node. I can do $(this).get() but it makes my string become an array (from "foo" to ["f", "o", "o"]). How can I cast it back to string? I need to get a variable of String type because I pass it to other functions that compare the values among them. I enclose a self-contained test case (requires Firebug's console): <!DOCTYPE html> <html> <head><title></title> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript"><!-- $(function(){ var foo = []; var $foo = $(foo); foo.push("987"); $foo.push("987"); foo.push("654"); $foo.push("654"); $.each(foo, function(i){ console.log("foo[%d]: object=%o; value=%s; string=%o", i, this, this, $(this).get()); // this.get() does not exist }); $foo.each(function(i){ console.log("$foo[%d]: object=%o; value=%s; string=%o", i, this, this, $(this).get()); // this.get() does not exist }); }); //--></script> </head> <body> </body> </html>

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• what's wrong with sql statements sqlite3_column_text ??

  - by ahmet732

  if(sqlite3_open([databasePath UTF8String], & database) == SQLITE_OK) { NSLog(@"DB OPENED"); // Setup the SQL Statement and compile it for faster access const char *sqlStatement ="select name from Medicine"; sqlite3_stmt *compiledStatement; int result = sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, nil); NSLog(@"RESULT %d", result); if(result == SQLITE_OK) { NSLog(@"RESULT IS OK..."); // Loop through the results and add them to the feeds array while(sqlite3_step(compiledStatement) == SQLITE_ROW) { // Read the data from the result row NSLog(@"WHILE IS OK"); **araci = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)];** NSLog(@"Data read"); NSLog(@"wow: %",araci); }//while }//if sqlite_prepare v2 // Release the compiled statement from memory sqlite3_finalize(compiledStatement); NSLog(@"compiled stmnt finalized.."); } sqlite3_close(database); NSLog(@"MA_DB CLOSED"); Questions 1 ) Everything is alright until bold code. when i run the app, throws an exception below. I have one table and one row in my db relatively, id (integer), name (varchar), desc (varchar) (I created my table using SQLite Manager). 2-) What is text type in SQLite Manager? Is that NSString? Also how can I put the string values(in table) to an NSMutableArray ? (I am really having difficulty in conversion.) *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** +[NSString stringWithUTF8String:]: NULL cString'

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• What's a good way to teach my son to program Java

  - by Software Monkey

  OK, so I've read through various posts about teaching beginner's to program, and there were some helpful things I will look at more closely. But what I want to know is whether there are any effective tools out there to teach a kid Java specifically? I want to teach him Java specifically because (a) with my strong background in C I feel that's too complex, (b) Java is the other language I know extremely well and therefore I can assist meaningfully without needing to teach myself a new but (to me) useless language, and (c) I feel that managed languages are the future, and lastly (d) Java is one of the simplest of all the languages I know well (aside from basic). I learned in basic, and I am open to teaching that first, but I am unaware of a decent free basic shell for Windows (though I haven't really searched, yet since it's not my first choice), and would anyway want to progress quickly to Java. My son is 8, so that's a couple of years earlier than I started - but he has expressed an interest in learning to program (possibly because I work from home a lot and he sees me programming all the time). If no-one can suggest a tool designed for this purpose, I will probably start him off with text/console based apps to teach the basics, and then progress to GUI building. Oh, one last thing, I am not a fan of IDE's (old school text editor type), so I would not be put off at all by a system that has him typing real code, and would likely prefer that to a toy drag/drop system. EDIT: Just to clarify; I really am specifically after ways to teach him Java; there are already a good many posts with good answers for other language alternatives - but that's not what I am looking for here. EDIT: What about Java frameworks for 2D video games - can anyone recommend any of them from personal experience? I like the idea of him starting with the mechanics in place (main game loop, scoring, etc) and adding the specifics for a game of his own imagining - that's what I did, though for me it was basic on a Commodore VIC-20 and a Sinclair ZX-81.

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• The file is damaged and could not be repaired

  - by acadia

  Hello Experts, I am trying to display a PDF file in my ASP.net page based on the binary data received from the ASP.net Web service. Below is the code. though I am getting the data from the Web Service for some reason, if I run the below mentioned code on page load I am getting the above mentioned error. Please help Response.Buffer = True Response.ContentType = "application/pdf" Response.AddHeader("Content-Disposition", "Inline") Dim ws As New imageGenService.Service1 Dim imagebyte As Byte() = Nothing imagebyte = ws.generateSamplePDF() If imagebyte IsNot Nothing Then '"attachment; filename=Whatever.pdf" Dim MemStream As New System.IO.MemoryStream Dim doc As New iTextSharp.text.Document Dim reader As iTextSharp.text.pdf.PdfReader Dim numberOfPages As Integer Dim currentPageNumber As Integer Dim writer As iTextSharp.text.pdf.PdfWriter = iTextSharp.text.pdf.PdfWriter.GetInstance(doc, MemStream) doc.Open() Dim cb As iTextSharp.text.pdf.PdfContentByte = writer.DirectContent Dim page As iTextSharp.text.pdf.PdfImportedPage Dim rotation As Integer reader = New iTextSharp.text.pdf.PdfReader(imagebyte) numberOfPages = reader.NumberOfPages currentPageNumber = 0 Do While (currentPageNumber < numberOfPages) currentPageNumber += 1 doc.SetPageSize(PageSize.LETTER) doc.NewPage() page = writer.GetImportedPage(reader, currentPageNumber) rotation = reader.GetPageRotation(currentPageNumber) If (rotation = 90) Or (rotation = 270) Then cb.AddTemplate(page, 0, -1.0F, 1.0F, 0, 0, reader.GetPageSizeWithRotation(currentPageNumber).Height) Else cb.AddTemplate(page, 1.0F, 0, 0, 1.0F, 0, 0) End If Loop If MemStream Is Nothing Then Response.Write("No Data is available for output") Else Response.BinaryWrite(MemStream.GetBuffer()) End If End If

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• Update the Progress bar using winforms c#

  - by karthik

  There is a functionality in my module, where the user can scan the number of serial ports in the system and when the user clicks "Auto scan" button, the code will have to go through each serial port and send a test message and wait for the reply. I am using Progress bar control to show process of autoscan. For which i need to pass the value to "x" and "Y" in my code to update the bar. How can i pass the value since my code is already in a foreach loop for getting the serialports. Y = should pass the value of total number of serial ports X = should iterate through each port and pass the value Hope i am clear with req. private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { string strAckData = ""; foreach (SerialPort sp in comPortsList) { sp.Open(); string sendData = "Auto scan"; sp.Write(sendData); strAckData += "Connection live on port " + sp.ReadExisting() + "\n"; sp.Close(); double dIndex = (double)x; **//How to pass the value here ?** double dTotal = (double)y; **//How to pass the value here ?** double dProgressPercentage = (dIndex / dTotal); int iProgressPercentage = (int)(dProgressPercentage * 100); // update the progress bar backgroundWorker1.ReportProgress(iProgressPercentage); } richTextBox1.Invoke(new MethodInvoker(delegate { richTextBox1.Text = strAckData; })); } private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e) { ProgressBar.Value = e.ProgressPercentage; } private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { StatusLabel.Text = "Auto Scan completed"; }

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• iteration in latex

  - by Tim

  Hi, I would like to use some iteration control flow to simplify the following latex code \begin{sidewaystable} \caption{A glance of images} \centering \begin{tabular}{| c ||c| c| c |c| c|| c |c| c|c|c| } \hline \backslashbox{Theme}{Class} &\multicolumn{5}{|c|}{Class 0} & \multicolumn{5}{|c|}{Class 1} \\ \hline \hline 1 & \includegraphics[scale=2]{../../results/1/0_1.eps} &\includegraphics[scale=2]{../../results/1/0_2.eps} &\includegraphics[scale=2]{../../results/1/0_3.eps} &\includegraphics[scale=2]{../../results/1/0_4.eps} &\includegraphics[scale=2]{../../results/1/0_5.eps} &\includegraphics[scale=2]{../../results/1/1_1.eps} &\includegraphics[scale=2]{../../results/1/1_2.eps} &\includegraphics[scale=2]{../../results/1/1_3.eps} &\includegraphics[scale=2]{../../results/1/1_4.eps} &\includegraphics[scale=2]{../../results/1/1_5.eps} \\ \hline \hline 2 & \includegraphics[scale=2]{../../results/2/0_1.eps} &\includegraphics[scale=2]{../../results/2/0_2.eps} &\includegraphics[scale=2]{../../results/2/0_3.eps} &\includegraphics[scale=2]{../../results/2/0_4.eps} &\includegraphics[scale=2]{../../results/2/0_5.eps} &\includegraphics[scale=2]{../../results/2/1_1.eps} &\includegraphics[scale=2]{../../results/2/1_2.eps} &\includegraphics[scale=2]{../../results/2/1_3.eps} &\includegraphics[scale=2]{../../results/2/1_4.eps} &\includegraphics[scale=2]{../../results/2/1_5.eps} \\ \hline ... % similarly for 3, 4, ..., 22 \hline 23 & \includegraphics[scale=2]{../../results/23/0_1.eps} &\includegraphics[scale=2]{../../results/23/0_2.eps} &\includegraphics[scale=2]{../../results/23/0_3.eps} &\includegraphics[scale=2]{../../results/23/0_4.eps} &\includegraphics[scale=2]{../../results/23/0_5.eps} &\includegraphics[scale=2]{../../results/23/1_1.eps} &\includegraphics[scale=2]{../../results/23/1_2.eps} &\includegraphics[scale=2]{../../results/23/1_3.eps} &\includegraphics[scale=2]{../../results/23/1_4.eps} &\includegraphics[scale=2]{../../results/23/1_5.eps} \\ \hline \end{tabular} \end{sidewaystable} I learn that the forloop package provides the for loop. But I am not sure how to apply it to my case? Or other methods not by forloop? Thanks and regards! Update: If I also want to simply another similar case, where the only difference is that the directory does not run from 1, 2, to 23, but in some arbitrary order such as 3, 2, 6, 9,..., or even a list of strings such as dira, dirc, dird, dirb,.... How to make the latex code into loops then? Thanks!

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• Android WebView - cannot understand - Null or empty value for header "if-none-match"

  - by ganesh

  Hi When i tried to load a url i get an exception as below Uncaught handler: thread WebViewCoreThread exiting due to uncaught exception 06-16 10:22:31.471: ERROR/AndroidRuntime(635): java.lang.RuntimeException: Null or empty value for header "if-none-match" 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at android.net.http.Request.addHeader(Request.java:161) 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at android.net.http.Request.addHeaders(Request.java:179) 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at android.net.http.Request.<init>(Request.java:132) 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at android.net.http.RequestQueue.queueRequest(RequestQueue.java:480) 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at android.net.http.RequestHandle.createAndQueueNewRequest(RequestHandle.java:419) 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at android.net.http.RequestHandle.setupRedirect(RequestHandle.java:195) 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at android.webkit.LoadListener.doRedirect(LoadListener.java:1216) 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at android.webkit.LoadListener.handleMessage(LoadListener.java:220) 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at android.os.Handler.dispatchMessage(Handler.java:99) 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at android.os.Looper.loop(Looper.java:123) 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:471) 06-16 10:22:31.471: ERROR/AndroidRuntime(635): at java.lang.Thread.run(Thread.java:1060) the code i am using is webview = (WebView)findViewById(R.id.generalwebview); webview.getSettings().setJavaScriptEnabled(true); webview.setWebViewClient(new WebViewClient() { public boolean shouldOverrideUrlLoading(WebView view, String url) { Log.i("ReserveBooking", "Processing webview url click..."); view.loadUrl(url); return true; } public void onPageFinished(WebView view, String url) { Log.i("ReserveBooking", "Finished loading URL: " +url); } public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { Log.e("ReserveBooking", "Error: " + description); Toast.makeText(ReserveBooking.this, description, Toast.LENGTH_SHORT).show(); } }); webview.loadUrl(utls); and when i changed the emulator, this programs works without any error .Please help me to know the reason why i get this error ,is this error somehow related to cache? ,I shall be glad if someone explains ganesh

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• Pause code execution until UIAlertView button is pressed?

  - by JuBu1324

  One of my methods sends a message to an object (what do you know about that), and expects a BOOL for an answer. However, BOOL answer it is expecting is based on the answer to a UIAlertView created in the receiving object's method. However, the code doesn't pause while waiting for the user to answer the UIAlertView. My problem is: how do I use -alertView:clickedButtonAtIndex in the method's return value? Here's the code the message runs (in this construction, I was expecting navigateAwayFromTab to change based on the user input in the UIAlertView, but it never gets a chance): - (BOOL)readyToNavigateAwayFromTab { NSLog( @"message received by Medical View"); navigateAwayFromTab = NO; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Navigate Away From Tab?" message:@"Navigating away from this tab will save your work." delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK", nil ]; [alert show]; [alert release]; return navigateAwayFromTab; } #define CANCEL 0 #define OK 1 - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { if( buttonIndex == OK ) navigateAwayFromTab = YES; } I've been reading up on the modal UIAlertView debate, and I agree with apple's implementation - at lest as the rule. However, in this case I don't see any way of solving the problem by putting code in -alertView:clickedButtonAtIndex because I don't need to run code based on the UIAlertView, I just need to read the response. Any suggestions on how I can reach my gaol? I've tried a while loop after [alert show] already, but then the alert doesn't even show then, and for a number of reasons I can't use -viewWillDisapear.

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• security policy error iphone ipod touch issue

  - by Joey

  I'm getting an "Error from Debugger: Error launching remote program: security policy error" when I try to run my app on my ipod touch. The provisions look in order, and the app builds to my iphone 3gs just fine. The app used to build just fine to my ipod touch, so I'm flustered what could have changed and wondering if anyone has any thoughts on what might be causing this issue. The build logs are below. Mon Mar 15 14:25:54 unknown com.apple.debugserver-43[449] : Connecting to com.apple.debugserver service... Mon Mar 15 14:25:55 unknown SpringBoard[24] : Unable to launch com.yourcompany.Unearthed because it has an invalid code signature, inadequate entitlements or its profile has not been explicitly trusted by the user. Mon Mar 15 14:25:55 unknown com.apple.debugserver-43[449] : error: unable to launch the application with CFBundleIdentifier 'com.yourcompany.Unearthed' sbs_error = 9 Mon Mar 15 14:25:55 unknown com.apple.debugserver-43[449] : 1 [01c1/0903]: RNBRunLoopLaunchInferior DNBProcessLaunch() returned error: '' Mon Mar 15 14:25:55 unknown com.apple.debugserver-43[449] : error: failed to launch process (null): security policy error Mon Mar 15 14:26:03 unknown MobileSafari[72] : void SendDelegateMessage(NSInvocation*): delegate (webView:decidePolicyForNavigationAction:request:frame:decisionListener:) failed to return after waiting 10 seconds. main run loop mode: UITrackingRunLoopMode

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• C# - Get values of static properties from static class

  - by JamesW

  I'm trying to loop through some static properties in a simple static class in order to populate a combo box with their values, but am having difficulties. Here is the simple class: public static MyStaticClass() { public static string property1 = "NumberOne"; public static string property2 = "NumberTwo"; public static string property3 = "NumberThree"; } ... and the code attempting to retrieve the values: Type myType = typeof(MyStaticClass); PropertyInfo[] properties = myType.GetProperties( BindingFlags.Public | BindingFlags.Static | BindingFlags.DeclaredOnly); foreach (PropertyInfo property in properties) { MyComboBox.Items.Add(property.GetValue(myType, null).ToString()); } If I don't supply any binding flags then I get about 57 properties including things like System.Reflection.Module Module and all sorts of other inherited things I don't care about. My 3 declared properties are not present. If I supply various combinations of other flags then it always returns 0 properties. Great. Does it matter that my static class is actually declared within another non-static class? Please help! What am I doing wrong?

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• jquery form validation plugin need help?

  - by python

  </tr> for ($i = 0; $i < $dm_numrec; $i++) { ?> <tr> <td width="266" height="28" valign="top"> <input type="text" name="recommend_to_name<?php echo $i;?>" /> </td> <td height="28" valign="top"> <input type="text" name="recommend_to_email<?php echo $i;?> />" </td> </tr> I used jquery form validation plugin http://bassistance.de/jquery-plugins/jquery-plugin-validation/ <script src="jquery.min.js"></script> <script src="jquery.validate.min.js"></script> <script> $(document).ready(function(){ $('#recommend').validate({ 'rules':{ 'recommend_to_name':'required', 'recommend_to_email':{ 'required':true, 'email':true }, } }); }); </script> How can I validate for the recommend_to_name that its name is a dynamic string from loop: recommend_to_name0 recommend_to_name1 recommend_to_name2 recommend_to_name..

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• Adding new record to a VFP data table in VB.NET with ADO recordsets

  - by Gerry

  I am trying to add a new record to a Visual FoxPro data table using an ADO dataset with no luck. The code runs fine with no exceptions but when I check the dbf after the fact there is no new record. The mDataPath variable shown in the code snippet is the path to the .dbc file for the entire database. A note about the For loop at the bottom; I am adding the body of incoming emails to this MEMO field so thought I needed to break the addition of this string into 256 character Chunks. Any guidance would be greatly appreciated. cnn1.Open("Driver={Microsoft Visual FoxPro Driver};" & _ "SourceType=DBC;" & _ "SourceDB=" & mDataPath & ";Exclusive=No") Dim RS As ADODB.RecordsetS = New ADODB.Recordset RS.Open("select * from gennote", cnn1, 1, 3, 1) RS.AddNew() 'Assign values to the first three fields RS.Fields("ignnoteid").Value = NextIDI RS.Fields("cnotetitle").Value = "'" & mail.Subject & "'" RS.Fields("cfilename").Value = "''" 'Looping through 254 characters at a time and add the data 'to Ado Field buffer For i As Integer = 1 To Len(memo) Step liChunkSize liStartAt = i liWorkString = Mid(mail.Body, liStartAt, liChunkSize) RS.Fields("mnote").AppendChunk(liWorkString) Next 'Update the recordset RS.Update() RS.Requery() RS.Close()

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• C# - foreach showing strange behavior / for working with no problem

  - by Marks

  Hi there. Today I coded a function that uses two nested foreach loops. After seeing, that it did not work like expected, i debugged it. But I dont see an error, and dont think a simple error can cause the behavior i have noticed. The part looks like this: foreach(MyClass cItem in checkedListBoxItemList.Items) { foreach(MyClass cActiveItem in ActiveItemList) { if (cActiveItem.ID == cItem.ID) /*...check checkbox for item...*/; } } Lets say, checkedListBoxItemList.items holds 4 items of type MyClass, and ActiveItemList is a List< MyClass with 2 Items. The debugger jumps into the outer foreach, reaches inner foreach, executes the if 2 times (once per cActiveItem) and reaches the end of the outer foreach.Now, the debugger jumps back to the head of the outer foreach as it should. But instead of starting the second round of the outer foreach, the debugger suddenly jumps into the MyClass.ToString() method. I can step through this method 4 times (number of items in checkedListBoxItemList.Items) and then ... nothing. Visual Studio shows me my windows form, and the foreach is not continued. When changing the code to int ListCount = checkedListBoxItemList.Items.Count; for(int i=0; i<ListCount; i++) { MyClass cItem = checkedListBoxItemList.Items[i] as MyClass; foreach(MyClass cActiveItem in ActiveItemList) { if (cActiveItem.ID == cItem.ID) /*...check checkbox for item...*/; } } everything works fine and as supposed. I showed the problem to a collegue, but he also didnt understand, what happened. I dont understand why the debugger jumps into the MyClass.ToString() method. I used F10 to step through, so no need to leave the function. And even, if there is a reason, why isnt the foreach loop continued? Im using Visual Studio 2010, if this is of any matter. Please tell me what happened. Thanks.

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• codingbat wordEnds using regex

  - by polygenelubricants

  I'm trying to solve wordEnds from codingbat.com using regex. This is the simplest as I can make it with my current knowledge of regex: public String wordEnds(String str, String word) { return str.replaceAll( String.format( ".*?(?=%s)(?<=(.|^))%1$s(?=(.|$))|.+", java.util.regex.Pattern.quote(word) ), "$1$2" ); } String.format is used to inject word into the pattern for both readability and convenience (it's injected twice). Pattern.quote isn't necessary to pass their tests, but I think it's required for a proper regex-based solution. The regex has two major parts: If after matching as few characters as possible ".*?", word can still be found "(?=%s)", then lookbehind to capture any character immediately preceding it "(?<=(.|^))", match word "%1$s" and lookforward to capture any character following it "(?=(.|$))". The initial "if" test ensures that the atomic lookbehind captures only if there's a word Using lookahead to capture the following character doesn't consume it, so it can be used as part of further matching Otherwise match what's left "|.+" Groups 1 and 2 would capture empty strings I think this works in all cases, but it's obviously quite complex. I'm just wondering if others can suggest a simpler regex to do this. Note: I'm not looking for a solution using indexOf and a loop. I want a regex-based replaceAll solution. I also need a working solution that I can just copy-paste into codingbat and passes.

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• MVC Multiple submit buttons on a array of objects

  - by Kieron

  Hi, I've got a list of objects in an MVC view, each with a set of submit buttons - Move up, Move down and Remove. Using the answer from this question, I can get the button clicked - but I need to know which item it would be operating on. The problem comes from the fact the input's value attribute is passed back, I need more information than that - i.e. an id. Below is a snippet of the contents of a for loop, rendering each item. <ul> <li><input type="submit" name="SubmitButton" value="Move-Up" class="linked-content-position-modifier" /></li> <li><input type="submit" name="SubmitButton" value="Move-Down" class="linked-content-position-modifier" /></li> <li><input type="submit" name="SubmitButton" value="Remove" class="linked-content-modifier" /></li> <li><%= Model.Contents[i] %></li> </ul> When the form is posted back, I can see that the SubmitButton has a value of either Move-Up, Move-Down or Remove - but no idea which item in the array it's referring too. Without changing the value to something really ugly, how would I tell which item it's referring to?

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