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• How to debug nondeterministic access violation crash?

  - by Special Touch

  Our C#/COM/C++ application is crashing and I need help debugging it. Running with gflags enabled and WinDbg attached, we determined the crashes are caused by an access violation, but we haven't been able to narrow it down any more than that. We are not seeing the issue on all machines; there are a couple of machines that seem to reproduce the issue frequently but not deterministically. We have observed the application crash from simply switching away from the application (say, Alt-Tab) and then back. Output from WinDbg is below. We have been trying to systematically comment out areas of code that could be causing the problem, but we haven't had much success yet. Any suggestions on what debugging steps or tools we should try? !analyze -v EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff) ExceptionAddress: 1a584ff2 (+0x1a584ff1) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 00000000 Parameter[1]: 1a584ff2 Attempt to read from address 1a584ff2 PROCESS_NAME: ProcessFiles.exe ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s. EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s. EXCEPTION_PARAMETER1: 00000000 EXCEPTION_PARAMETER2: 1a584ff2 READ_ADDRESS: 1a584ff2 FOLLOWUP_IP: Ed20+1a584ff1 1a584ff2 ?? ??? NTGLOBALFLAG: 2000000 APPLICATION_VERIFIER_FLAGS: 0 IP_MODULE_UNLOADED: Ed20+1a584ff1 1a584ff2 ?? ??? MANAGED_STACK: (TransitionMU) 0EC6F6F4 7B1D8CCE System_Windows_Forms_ni!System.Windows.Forms.Application+ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32, Int32, Int32)+0x24e 0EC6F790 7B1D8937 System_Windows_Forms_ni!System.Windows.Forms.Application+ThreadContext.RunMessageLoopInner(Int32, System.Windows.Forms.ApplicationContext)+0x177 0EC6F7E4 7B1D8781 System_Windows_Forms_ni!System.Windows.Forms.Application+ThreadContext.RunMessageLoop(Int32, System.Windows.Forms.ApplicationContext)+0x61 0EC6F814 7B195911 System_Windows_Forms_ni!System.Windows.Forms.Application.Run(System.Windows.Forms.Form)+0x31 0EC6F828 0969D97A Extract_Utilities_Forms!Extract.Utilities.Forms.VerificationForm`1[[System.__Canon, mscorlib]].A(System.Object)+0x23a 0EC6F8C0 79A00EEE mscorlib_ni!System.Threading.ThreadHelper.ThreadStart_Context(System.Object)+0x72a25e 0EC6F8CC 792E019F mscorlib_ni!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)+0x6f 0EC6F8E4 797DB48A mscorlib_ni!System.Threading.ThreadHelper.ThreadStart(System.Object)+0x4a (TransitionUM) LAST_CONTROL_TRANSFER: from 7e418734 to 1a584ff2 FAULTING_THREAD: ffffffff ADDITIONAL_DEBUG_TEXT: Followup set based on attribute [ip_not_executable] from Frame:[0] on thread:[e30] BUGCHECK_STR: APPLICATION_FAULT_BAD_INSTRUCTION_PTR_INVALID_POINTER_READ_WRONG_SYMBOLS_WINDOW_HOOK PRIMARY_PROBLEM_CLASS: BAD_INSTRUCTION_PTR DEFAULT_BUCKET_ID: BAD_INSTRUCTION_PTR STACK_TEXT: 7b1d8cce System_Windows_Forms_ni!System.Windows.Forms.Application+ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop+0xc 7b1d8937 System_Windows_Forms_ni!System.Windows.Forms.Application+ThreadContext.RunMessageLoopInner+0x0 7b1d8781 System_Windows_Forms_ni!System.Windows.Forms.Application+ThreadContext.RunMessageLoop+0x0 7b195911 System_Windows_Forms_ni!System.Windows.Forms.Application.Run+0x31 0969d97a Extract_Utilities_Forms!Extract.Utilities.Forms.VerificationForm`1[[System.__Canon, mscorlib]].A+0x23a 79a00eee mscorlib_ni!System.Threading.ThreadHelper.ThreadStart_Context+0x72a25e 792e019f mscorlib_ni!System.Threading.ExecutionContext.Run+0x6f 797db48a mscorlib_ni!System.Threading.ThreadHelper.ThreadStart+0x4a STACK_COMMAND: .ecxr ; ~~[e30] ; .frame 0 ; ** Pseudo Context ** ; kb FAILED_INSTRUCTION_ADDRESS: Ed20+1a584ff1 1a584ff2 ?? ??? SYMBOL_NAME: Ed20 FOLLOWUP_NAME: MachineOwner MODULE_NAME: Ed20 IMAGE_NAME: Ed20 DEBUG_FLR_IMAGE_TIMESTAMP: 0 FAILURE_BUCKET_ID: BAD_INSTRUCTION_PTR_c0000005_Ed20!Unloaded BUCKET_ID: APPLICATION_FAULT_BAD_INSTRUCTION_PTR_INVALID_POINTER_READ_WRONG_SYMBOLS_WINDOW_HOOK_BAD_IP_Ed20 Followup: MachineOwner

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• popViewControllerAnimated not working, but back button works

  - by Manu

  Hi, I am creating an application based on the Utility template. The main screen consists of a menu with several buttons, each of which creates a different flip-side view. In one of those flip-side views I also configured a Navigation Controller, which works perfectly as long as I have the NavigationBar activated... I can push the view but I have to use the "back" button to return to my flip-side view, which would be the root of the Navigation Controller. The problem comes if I try to go back using "popViewControllerAnimated", properly configured with a button, instead of the "back" button of the NavigationBar. My application crashes for some reason and I am not able to understand why. I could just use the "back" button in the NavigationBar and forget about the problem, but I would prefer to have my own button in order to go back. My app consists of the following: My APPDelegate.m: - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { MenuViewController *menuController = [[MenuViewController alloc] initWithNibName:@"MenuView" bundle:nil]; self.menuViewController = menuController; [menuController release]; menuViewController.view.frame = [UIScreen mainScreen].applicationFrame; [window addSubview:[menuViewController view]]; [window makeKeyAndVisible]; return YES; } MenuViewController.m starting my flip-side view: - (IBAction)showFuelUpliftView { FuelUpliftViewController *controller = [[FuelUpliftViewController alloc] initWithNibName:@"FuelUpliftView" bundle:nil]; controller.delegate = self; controller.title = @"Fuel Uplift"; UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:controller]; [navController setNavigationBarHidden: NO]; navController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:navController animated:YES]; [navController release]; [controller release]; } FuelUpliftViewController.m, where I push the second view of the NavigationController with a button: - (IBAction)showFuelUplift2View:(id)sender { UIViewController *controller = [[UIViewController alloc] initWithNibName:@"FuelUplift2View" bundle:nil]; controller.title = @"Settings"; [self.navigationController pushViewController:controller animated:YES]; [controller release]; } And finally, my FuelUplift2ViewController.m, where the app crashes when trying to go back: - (IBAction)backFromFuelUplift2View { [self.navigationController popViewControllerAnimated:YES]; } I do not know if all this makes sense, I am currently beginning with my first application and am still learning thanks to the traditional trial an error method. Nevertheless, I cannot see the reason for this problem and would appreciate any help I can get. Thanks very much, Manu

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• Defining a ContextMenu in a DataGridRow style

  - by Brent

  I'm trying to clean up some of my xaml in my views by moving a lot of the DataGrid styles into a ResourceDictionary. One of the things I'd like to move is the ContextMenu that is bound to some commands in the ViewModel. However, when I move the context menu to the ResourceDictionary, the commands are are never firing anymore, and I can't figure out why. I've defined the ContextMenu in the DataGridRow style so that when the user right clicks on the columnheader, no ContextMenu is shown... it will only be shown they right click on a row. Am I doing something wrong here? FYI I'm using VS 2010 RTM if that makes a difference. <Style x:Key="DataGridRowStyle" TargetType="{x:Type DataGridRow}"> <Setter Property="Height" Value="20"/> <Setter Property="ContextMenu"> <Setter.Value> <ContextMenu> <MenuItem Header="New" Command="{Binding RelativeSource={RelativeSource AncestorType=DataGrid}, Path=DataContext.NewCommand}"> <MenuItem.Icon> <Image Source="/Images/DocumentWhite(32N).png" Width="16" Height="16"/> </MenuItem.Icon> </MenuItem> <MenuItem Header="Open" Command="{Binding RelativeSource={RelativeSource AncestorType=DataGrid}, Path=DataContext.OpenCommand}"> <MenuItem.Icon> <Image Source="/Images/FolderOpenYellow(32N).png" Width="16" Height="16"/> </MenuItem.Icon> </MenuItem> <MenuItem Header="Delete" Command="{Binding RelativeSource={RelativeSource AncestorType=DataGrid}, Path=DataContext.DeleteCommand}"> <MenuItem.Icon> <Image Source="/Images/Delete(32N).png" Width="16" Height="16"/> </MenuItem.Icon> </MenuItem> </ContextMenu> </Setter.Value> </Setter> <Style.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="Background" Value="{StaticResource hoverGradient}"/> </Trigger> <Trigger Property="IsSelected" Value="True"> <Setter Property="Background" Value="{StaticResource BtnOverFill}"/> </Trigger> </Style.Triggers> </Style>

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• Unable to retrieve information form HP-UX pst_status object

  - by bogertron

  I am attempting to get process information by using the HP-UX C/C++ library. After scouring the internet, I have discovered that HP-UX has the pstat.h header file which allows programmers to retrieve the process information. After attempting to understand code from the internet hp website, I attempted to create a little test sample to comprehend what the code does. I attempted to use example 3, however, I ran into several issues. The first issue came when I attempted to execute the following line of code: (void)printf("pid is %d, command is %s\n", pst[i].pst_pid, pst[i].pst_ucomm); When I attempted to print the string, I hit a memory fault. So I decided to attempt to see what the string is and came up with the following: #include <sys/param.h> #include <sys/pstat.h> #include <sys/unistd.h> #include <string.h> int main(int argc, char** argv) { #define BURST ((size_t)10) struct pst_status pst[BURST]; int i, count; int idx = 0; /* index within the context */ int index = 0; /* loop until count == 0, will occur all have been returned */ while ((count=pstat_getproc(pst, sizeof(pst[0]),BURST,idx))>0) { index = 0; printf("index: %d", index); /* got count (max of BURST) this time. process them */ while (pst[i].pst_ucomm[index] != '\0') { printf("%c", pst[i].pst_ucomm[index]); index++; } printf("\n"); for (i = 0; i < count; i++) { printf("pid is %d, command is \n", pst[i].pst_pid); } /* * now go back and do it again, using the next index after * the current 'burst' */ idx = pst[count-1].pst_idx + 1; } if (count == -1) perror("pstat_getproc()"); #undef BURST } Unfortunately, what happens is that I get the first process printed, then pid is 2, command is pid is 2, command is pid is 2, command is... I know that I must be doing something foolish since my C/C++ skills are not that great, but I cannot figure out what the issue is since the code is largely copied from the hp website. So here's the question(s) for clarity: 1. Why can't printf("%s", pst[i].pst_ucomm); handle strings? 2. Why can't I iterate over the processes in the system? Any help is greatly appreciated.

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• Binding a wpf listbox to a combobox

  - by user293545

  Hi there, I have created a very basic wpf application that I want to use to record time entries against different projects. I havent used mvvm for this as I think its an overkill. I have a form that contains a combobox and a listbox. I have created a basic entity model like this What I am trying to do is bind the combobox to Project and whenever I select an item from the combobox it updates the listview with the available tasks associated with that project. This is my xaml so far. I dont have any code behind as I have simply clicked on that Data menu and then datasources and dragged and dropped the items over. The application loads ok and the combobox is been populated however nothing is displaying in the listbox. Can anyone tell me what I have missed? <Window.Resources> <CollectionViewSource x:Key="tasksViewSource" d:DesignSource="{d:DesignInstance l:Task, CreateList=True}" /> <CollectionViewSource x:Key="projectsViewSource" d:DesignSource="{d:DesignInstance l:Project, CreateList=True}" /> </Window.Resources> <Grid DataContext="{StaticResource tasksViewSource}"> <l:NotificationAreaIcon Text="Time Management" Icon="Resources\NotificationAreaIcon.ico" MouseDoubleClick="OnNotificationAreaIconDoubleClick"> <l:NotificationAreaIcon.MenuItems> <forms:MenuItem Text="Open" Click="OnMenuItemOpenClick" DefaultItem="True" /> <forms:MenuItem Text="-" /> <forms:MenuItem Text="Exit" Click="OnMenuItemExitClick" /> </l:NotificationAreaIcon.MenuItems> </l:NotificationAreaIcon> <Button Content="Insert" Height="23" HorizontalAlignment="Left" Margin="150,223,0,0" Name="btnInsert" VerticalAlignment="Top" Width="46" Click="btnInsert_Click" /> <ComboBox Height="23" HorizontalAlignment="Left" Margin="70,16,0,0" Name="comProjects" VerticalAlignment="Top" Width="177" DisplayMemberPath="Project1" ItemsSource="{Binding Source={StaticResource projectsViewSource}}" SelectedValuePath="ProjectID" /> <Label Content="Projects" Height="28" HorizontalAlignment="Left" Margin="12,12,0,0" Name="label1" VerticalAlignment="Top" IsEnabled="False" /> <Label Content="Tasks" Height="28" HorizontalAlignment="Left" Margin="16,61,0,0" Name="label2" VerticalAlignment="Top" /> <ListBox Height="112" HorizontalAlignment="Left" Margin="16,87,0,0" Name="lstTasks" VerticalAlignment="Top" Width="231" DisplayMemberPath="Task1" ItemsSource="{Binding Path=ProjectID, Source=comProjects}" SelectedValuePath="TaskID" /> <TextBox Height="23" HorizontalAlignment="Left" Margin="101,224,0,0" Name="txtMinutes" VerticalAlignment="Top" Width="42" /> <Label Content="Mins to Insert" Height="28" HorizontalAlignment="Left" Margin="12,224,0,0" Name="label3" VerticalAlignment="Top" /> <Button Content="None" Height="23" HorizontalAlignment="Left" Margin="203,223,0,0" Name="btnNone" VerticalAlignment="Top" Width="44" /> </Grid>

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• MSSQL: How to copy a file (pdf, doc, txt...) stored in a varbinary(max) field to a file in a CLR sto

  - by user193655

  I ask this question as a followup of this question. A solution that uses bcp and xp_cmdshell, that is not my desired solution, has been posted here: stackoverflow.com/questions/828749/ms-sql-server-2005-write-varbinary-to-file-system (sorry i cannot post a second hyperlink since my reputation is les than 10). I am new to c# (since I am a Delphi developer) anyway I was able to create a simple CLR stored procedures by following a tutorial. My task is to move a file from the client file system to the server file system (the server can be accessed using remote IP, so I cannot use a shared folder as destination, this is why I need a CLR stored procedure). So I plan to: 1) store from Delphi the file in a varbinary(max) column of a temporary table 2) call the CLR stored procedure to create a file at the desired path using the data contained in the varbinary(max) field Imagine I need to move C:\MyFile.pdf to Z:\MyFile.pdf, where C: is a harddrive on local system and Z: is an harddrive on the server. I provide the code below (not working) that someone can modify to make it work? Here I suppose to have a table called MyTable with two fields: ID (int) and DATA (varbinary(max)). Please note it doesn't make a difference if the table is a real temporary table or just a table where I temporarly store the data. I would appreciate if some exception handling code is there (so that I can manage an "impossible to save file" exception). I would like to be able to write a new file or overwrite the file if already existing. [Microsoft.SqlServer.Server.SqlProcedure] public static void VarbinaryToFile(int TableId) { using (SqlConnection connection = new SqlConnection("context connection=true")) { connection.Open(); SqlCommand command = new SqlCommand("select data from mytable where ID = @TableId", connection); command.Parameters.AddWithValue("@TableId", TableId); // This was the sample code I found to run a query //SqlContext.Pipe.ExecuteAndSend(command); // instead I need something like this (THIS IS META_SYNTAX!!!): SqlContext.Pipe.ResultAsStream.SaveToFile('z:\MyFile.pdf'); } } (one subquestion is: is this approach coorect or there is a way to directly pass the data to the CLR stored procedure so I don't need to use a temp table?) If the subquestion's answer is No, could you describe the approach of avoiding a temp table? So is there a better way then the one I describe above (=temp table + Stored procedure)? A way to directly pass the dataastream from the client application to the CLR stored procedure? (my files can be any size but also very big)

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• UIViewAnimation done by a UIViewController belonging to a UINavigationController?

  - by RickiG

  Hi I have an UINavigationController which the user navigates with. When pushing a specific UIViewController onto the navigation stack, a "settings" button appear in the navigationBar. When the user clicks this button I would like to flip the current view/controller, i.e. everything on screen, including the navigationBar, over to a settings view. So I have a SettingsViewController which I would like to flip to from my CurrentViewController that lives on a navigationController stack. I get all kinds of strange behavior trying to do this, the UIViews belonging to the SettingsViewController will start to animate, sliding into place, the navigationButtons moves around, nothing acts as I would think. -(void)settingsHandler { SettingViewController *settingsView = [[SettingViewController alloc] init]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1.0]; [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.navigationController.view cache:YES]; [self.navigationController.view addSubview:settingsView.view]; [UIView commitAnimations]; } The above results in the views flipping correctly, but the subviews of the SettingsViewController are all positioned in (0, 0) and after the transition, they 'snap' into place? Is it because I instantiate and add my subviews in viewDidLoad, like this? - (void)viewDidLoad { UIImageView *imageBg = [[UIImageView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 460.0f)]; [imageBg setImage:[UIImage imageNamed:@"background.png"]]; [self.view addSubview:imageBg]; [imageBg release]; SettingsSubview *switchView = [[SettingsSubview alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 460.0f)]; [self.view addSubview:switchView]; [switchView release]; [super viewDidLoad]; } 1: How should I correctly do the "flip" transition, from within the UIViewController in the UINavigationController, to a new UIViewController and subsequently from the new UIViewController and back to the "original" UIViewController residing on the UINavigationControllers stack? 2: Should I use a different approach, than the "viewDidLoad" method, when instantiating and adding subviews to a UIViewController? -question 2 is more of a "best practice" thing. I have seen different ways of doing it and I am having trouble either finding or understanding the life-cycle documentation and the different threads and posts on the subject. I am missing the "best practice" examples. Thank You very much for any help given:)

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• Question About Example In Robert C Martin's _Clean Code_

  - by Jonah

  This is a question about the concept of a function doing only one thing. It won't make sense without some relevant passages for context, so I'll quote them here. They appear on pgs 37-38: To say this differently, we want to be able to read the program as though it were a set of TO paragraphs, each of which is describing the current level of abstraction and referencing subsequent TO paragraphs at the next level down. To include the setups and teardowns, we include setups, then we include the test page content, and then we include the teardowns. To include the setups, we include the suite setup if this is a suite, then we include the regular setup. It turns out to be very dif?cult for programmers to learn to follow this rule and write functions that stay at a single level of abstraction. But learning this trick is also very important. It is the key to keeping functions short and making sure they do “one thing.” Making the code read like a top-down set of TO paragraphs is an effective technique for keeping the abstraction level consistent. He then gives the following example of poor code: public Money calculatePay(Employee e) throws InvalidEmployeeType { switch (e.type) { case COMMISSIONED: return calculateCommissionedPay(e); case HOURLY: return calculateHourlyPay(e); case SALARIED: return calculateSalariedPay(e); default: throw new InvalidEmployeeType(e.type); } } and explains the problems with it as follows: There are several problems with this function. First, it’s large, and when new employee types are added, it will grow. Second, it very clearly does more than one thing. Third, it violates the Single Responsibility Principle7 (SRP) because there is more than one reason for it to change. Fourth, it violates the Open Closed Principle8 (OCP) because it must change whenever new types are added. Now my questions. To begin, it's clear to me how it violates the OCP, and it's clear to me that this alone makes it poor design. However, I am trying to understand each principle, and it's not clear to me how SRP applies. Specifically, the only reason I can imagine for this method to change is the addition of new employee types. There is only one "axis of change." If details of the calculation needed to change, this would only affect the submethods like "calculateHourlyPay()" Also, while in one sense it is obviously doing 3 things, those three things are all at the same level of abstraction, and can all be put into a TO paragraph no different from the example one: TO calculate pay for an employee, we calculate commissioned pay if the employee is commissioned, hourly pay if he is hourly, etc. So aside from its violation of the OCP, this code seems to conform to Martin's other requirements of clean code, even though he's arguing it does not. Can someone please explain what I am missing? Thanks.

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• Android - Getting audio to play through earpiece

  - by Donal Rafferty

  I currently have code that reads a recording in from the devices mic using the AudioRecord class and then playing it back out using the AudioTrack class. My problem is that when I play it out it plays vis the speaker phone. I want it to play out via the ear piece on the device. Here is my code: public class LoopProg extends Activity { boolean isRecording; //currently not used AudioManager am; int count = 0; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); am = (AudioManager) getSystemService(Context.AUDIO_SERVICE); am.setMicrophoneMute(true); while(count <= 1000000){ Record record = new Record(); record.run(); count ++; Log.d("COUNT", "Count is : " + count); } } public class Record extends Thread { static final int bufferSize = 200000; final short[] buffer = new short[bufferSize]; short[] readBuffer = new short[bufferSize]; public void run() { isRecording = true; android.os.Process.setThreadPriority (android.os.Process.THREAD_PRIORITY_URGENT_AUDIO); int buffersize = AudioRecord.getMinBufferSize(11025, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT); AudioRecord arec = new AudioRecord(MediaRecorder.AudioSource.MIC, 11025, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, buffersize); AudioTrack atrack = new AudioTrack(AudioManager.STREAM_MUSIC, 11025, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, buffersize, AudioTrack.MODE_STREAM); am.setRouting(AudioManager.MODE_NORMAL,1, AudioManager.STREAM_MUSIC); int ok = am.getRouting(AudioManager.ROUTE_EARPIECE); Log.d("ROUTING", "getRouting = " + ok); setVolumeControlStream(AudioManager.STREAM_VOICE_CALL); //am.setSpeakerphoneOn(true); Log.d("SPEAKERPHONE", "Is speakerphone on? : " + am.isSpeakerphoneOn()); am.setSpeakerphoneOn(false); Log.d("SPEAKERPHONE", "Is speakerphone on? : " + am.isSpeakerphoneOn()); atrack.setPlaybackRate(11025); byte[] buffer = new byte[buffersize]; arec.startRecording(); atrack.play(); while(isRecording) { arec.read(buffer, 0, buffersize); atrack.write(buffer, 0, buffer.length); } arec.stop(); atrack.stop(); isRecording = false; } } } As you can see if the code I have tried using the AudioManager class and its methods including the deprecated setRouting method and nothing works, the setSpeatPoneOn method seems to have no effect at all, neither does the routing method. Has anyone got any ideas on how to get it to play via the earpiece instead of the spaker phone?

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• SQL Server 2008: FileStream Insertion Failure w/ .NET 3.5SP1

  - by James Alexander

  I've configured a db w/ a FileStream group and have a table w/ File type on it. When attempting to insert a streamed file and after I create the table row, my query to read the filepath out and the buffer returns a null file path. I can't seem to figure out why though. Here is the table creation script: /****** Object: Table [dbo].[JobInstanceFile] Script Date: 03/22/2010 18:05:36 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO SET ANSI_PADDING ON GO CREATE TABLE [dbo].[JobInstanceFile]( [JobInstanceFileId] [int] IDENTITY(1,1) NOT NULL, [JobInstanceId] [int] NOT NULL, [File] [varbinary](max) FILESTREAM NULL, [FileId] [uniqueidentifier] ROWGUIDCOL NOT NULL, [Created] [datetime] NOT NULL, CONSTRAINT [PK_JobInstanceFile] PRIMARY KEY CLUSTERED ( [JobInstanceFileId] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] FILESTREAM_ON [JobInstanceFilesGroup], UNIQUE NONCLUSTERED ( [FileId] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY] FILESTREAM_ON [JobInstanceFilesGroup] GO SET ANSI_PADDING OFF GO ALTER TABLE [dbo].[JobInstanceFile] ADD DEFAULT (newid()) FOR [FileId] GO Here's my proc I call to create the row before streaming the file: /****** Object: StoredProcedure [dbo].[JobInstanceFileCreate] Script Date: 03/22/2010 18:06:23 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO create proc [dbo].[JobInstanceFileCreate] @JobInstanceId int, @Created datetime as insert into JobInstanceFile (JobInstanceId, FileId, Created) values (@JobInstanceId, newid(), @Created) select scope_identity() GO And lastly, here's the code I'm using: public int CreateJobInstanceFile(int jobInstanceId, string filePath) { using (var connection = new SqlConnection(ConfigurationManager.ConnectionStrings["ConsumerMarketingStoreFiles"].ConnectionString)) using (var fileStream = new FileStream(filePath, FileMode.Open)) { connection.Open(); var tran = connection.BeginTransaction(IsolationLevel.ReadCommitted); try { //create the JobInstanceFile instance var command = new SqlCommand("JobInstanceFileCreate", connection) { Transaction = tran }; command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@JobInstanceId", jobInstanceId); command.Parameters.AddWithValue("@Created", DateTime.Now); int jobInstanceFileId = Convert.ToInt32(command.ExecuteScalar()); //read out the filestream transaction context to stream the file for storage command.CommandText = "select [File].PathName(), GET_FILESTREAM_TRANSACTION_CONTEXT() from JobInstanceFile where JobInstanceFileId = @JobInstanceFileId"; command.CommandType = CommandType.Text; command.Parameters.AddWithValue("@JobInstanceFileId", jobInstanceFileId); using (SqlDataReader dr = command.ExecuteReader()) { dr.Read(); //get the file path we're writing out to string writePath = dr.GetString(0); using (var writeStream = new SqlFileStream(writePath, (byte[])dr.GetValue(1), FileAccess.ReadWrite)) { //copy from one stream to another byte[] bytes = new byte[65536]; int numBytes; while ((numBytes = fileStream.Read(bytes, 0, 65536)) 0) writeStream.Write(bytes, 0, numBytes); } } tran.Commit(); return jobInstanceFileId; } catch (Exception e) { tran.Rollback(); throw e; } } } Can someone please let me know what I'm doing wrong. In the code, the following expression is returning null for the file path and shouldn't be: //get the file path we're writing out to string writePath = dr.GetString(0); The server is different then the computer the code is running on but the necessary shares appear to be in order and I have also run the following: EXEC sp_configure filestream_access_level, 2 Any help would be greatly appreciated. Thanks!

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• Problems with office automation in asp.net. I can use alternatives such as open-office, if I knew ho

  - by Vinicius Melquiades

  I have a ASP.NET 2.0 web application that should upload a ppt file and then extract its slides to images. For that I have imported office.dll and Microsoft.Office.Interop.PowerPoint.dll assemblies and wrote the following code public static int ExtractImages(string ppt, string targetPath, int width, int height) { var pptApplication = new ApplicationClass(); var pptPresentation = pptApplication.Presentations.Open(ppt, MsoTriState.msoTrue, MsoTriState.msoFalse, MsoTriState.msoFalse); var slides = new List<string>(); for (var i = 1; i <= pptPresentation.Slides.Count; i++) { var target = string.Format(targetPath, i); pptPresentation.Slides[i].Export(target, "jpg", width, height); slides.Add(new FileInfo(target).Name); } pptPresentation.Close(); return slides.Count; } If I run this code in my local machine, in asp.net or a executable, it runs perfectly. But If I try running it in the production server, I get the following error: System.Runtime.InteropServices.COMException (0x80004005): PowerPoint could not open the file. at Microsoft.Office.Interop.PowerPoint.Presentations.Open(String FileName, MsoTriState ReadOnly, MsoTriState Untitled, MsoTriState WithWindow) at PPTImageExtractor.PptConversor.ExtractImages(String caminhoPpt, String caminhoDestino, Int32 largura, Int32 altura, String caminhoThumbs, Int32 larguraThumb, Int32 alturaThumb, Boolean geraXml) at Upload.ProcessRequest(HttpContext context) The process is running with the user NT AUTHORITY\NETWORK SERVICE. IIS is configured to use anonymous authentication. The anonymous user is an administrator, I set it like this to allow the application to run without having to worry about permissions. In my development machine I have office 2010 beta1. I have tested with the executable in a pc with office 2007 as well. And if I run the code from the executable in the server, with office 2003 installed, it runs perfectly. To ensure that there wouldn't be any problems with permissions, everyone in the server has full access to the web site. The website is running in IIS7 and Classic Mode. I also heard that Open-office has an API that should be able to do this, but I couldn't find anything about it. I don't mind using DLLImport to do what I have to do and I can install open-office on the web server. Don't worry about rewriting this method, as long as the parameters are the same, everything will work. I appreciate your help. ps: Sorry for bad English.

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• Storing objects in the array

  - by Ockonal

  Hello, I want to save boost signals objects in the map (association: signal name ? signal object). The signals signature is different, so the second type of map should be boost::any. map<string, any> mSignalAssociation; The question is how to store objects without defining type of new signal signature? typedef boost::signals2::signal<void (int KeyCode)> sigKeyPressed; mSignalAssociation.insert(make_pair("KeyPressed", sigKeyPressed())); // This is what I need: passing object without type definition mSignalAssociation["KeyPressed"] = (typename boost::signals2::signal<void (int KeyCode)>()); // One more trying which won't work. And I don't want use this sigKeyPressed mKeyPressed; mSignalAssociation["KeyPressed"] = mKeyPressed; All this tryings throw the error: /usr/include/boost/noncopyable.hpp: In copy constructor ‘boost::signals2::signal_base::signal_base(const boost::signals2::signal_base&)’: In file included from /usr/include/boost/signals2/detail/signals_common.hpp:17:0, /usr/include/boost/noncopyable.hpp:27:7: error: ‘boost::noncopyable_::noncopyable::noncopyable(const boost::noncopyable_::noncopyable&)’ is private /usr/include/boost/signals2/signal_base.hpp:22:5: error: within this context ---------- /usr/include/boost/signals2/detail/signal_template.hpp: In copy constructor ‘boost::signals2::signal1<void, int&, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(int)>, boost::function<void(const boost::signals2::connection&, int)>, boost::signals2::mutex>::signal1(const boost::signals2::signal1<void, int, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(int)>, boost::function<void(const boost::signals2::connection&, int)>, boost::signals2::mutex>&)’: In file included from /usr/include/boost/preprocessor/iteration/detail/iter/forward1.hpp:52:0, /usr/include/boost/signals2/detail/signal_template.hpp:578:5: note: synthesized method ‘boost::signals2::signal_base::signal_base(const boost::signals2::signal_base&)’ first required here from /usr/include/boost/signals2.hpp:16, --------- /usr/include/boost/signals2/preprocessed_signal.hpp: In copy constructor ‘boost::signals2::signal<void(int)>::signal(const boost::signals2::signal<void(int)>&)’: In file included from /usr/include/boost/signals2/signal.hpp:36:0, /usr/include/boost/signals2/preprocessed_signal.hpp:42:5: note: synthesized method ‘boost::signals2::signal1<void, int, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(int)>, boost::function<void(const boost::signals2::connection&, int)>, boost::signals2::mutex>::signal1(const boost::signals2::signal1<void, int, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(int)>, boost::function<void(const boost::signals2::connection&, int)>, boost::signals2::mutex>&)’ first required here from /home/ockonal/Workspace/Projects/Pseudoform-2/include/Core/Systems.hpp:6,

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• tapestry 4 session expired

  - by cometta

  is below caused by user session expired? if yes, how to exend session on tapestry 4 ? or any other way to solve this problem? Unable to process client request: Unable to forward to local resource '/app?service=page&page=Home&id=692': java.lang.NullPointerException: Property 'webRequest' of <OuterProxy for tapestry.globals.RequestGlobals(org.apache.tapestry.services.RequestGlobals)> is null. Apr 22, 2010 5:14:43 PM org.apache.catalina.core.ApplicationContext log SEVERE: app: ServletException javax.servlet.ServletException: java.lang.NullPointerException: Property 'webRequest' of <OuterProxy for tapestry.globals.RequestGlobals(org.apache.tapestry.services.RequestGlobals)> is null. at org.apache.tapestry.services.impl.WebRequestServicerPipelineBridge.service(WebRequestServicerPipelineBridge.java:65) at $ServletRequestServicer_128043b52ea.service($ServletRequestServicer_128043b52ea.java) at org.apache.tapestry.request.DecodedRequestInjector.service(DecodedRequestInjector.java:55) at $ServletRequestServicerFilter_128043b52e6.service($ServletRequestServicerFilter_128043b52e6.java) at $ServletRequestServicer_128043b52ec.service($ServletRequestServicer_128043b52ec.java) at org.apache.tapestry.multipart.MultipartDecoderFilter.service(MultipartDecoderFilter.java:52) at $ServletRequestServicerFilter_128043b52e4.service($ServletRequestServicerFilter_128043b52e4.java) at $ServletRequestServicer_128043b52ec.service($ServletRequestServicer_128043b52ec.java) at org.apache.tapestry.services.impl.SetupRequestEncoding.service(SetupRequestEncoding.java:53) at $ServletRequestServicerFilter_128043b52e8.service($ServletRequestServicerFilter_128043b52e8.java) at $ServletRequestServicer_128043b52ec.service($ServletRequestServicer_128043b52ec.java) at $ServletRequestServicer_128043b52de.service($ServletRequestServicer_128043b52de.java) at org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:126) at org.apache.tapestry.ApplicationServlet.doPost(ApplicationServlet.java:171) at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378) at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109) at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.SessionFixationProtectionFilter.doFilterHttp(SessionFixationProtectionFilter.java:67) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.ntlm.NtlmProcessingFilter.doFilterHttp(NtlmProcessingFilter.java:358) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.concurrent.ConcurrentSessionFilter.doFilterHttp(ConcurrentSessionFilter.java:99) at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) at org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:175) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619)

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• Android GridView with ads below

  - by ktambascio

  Hi, I'm trying to integrate ads (admob) into my Android app. It's mostly working, except for one issue with the layout. My layout consists of: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:app="http://schemas.android.com/apk/res/com.example.photos"> <LinearLayout android:orientation="horizontal" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/status_layout"> <ImageView android:id="@+id/cardStatus" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" android:id="@+id/cardStatusText" /> </LinearLayout> <GridView android:id="@+id/imageGridView" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="10dp" android:verticalSpacing="10dp" android:horizontalSpacing="10dp" android:numColumns="auto_fit" android:columnWidth="100dp" android:stretchMode="columnWidth" android:gravity="center" android:layout_below="@id/status_layout" /> <!-- Place an AdMob ad at the bottom of the screen. --> <!-- It has white text on a black background. --> <!-- The description of the surrounding context is 'Android game'. --> <com.admob.android.ads.AdView android:id="@+id/ad" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" app:backgroundColor="#000000" app:primaryTextColor="#FFFFFF" app:secondaryTextColor="#CCCCCC" app:keywords="Android Photo" /> </RelativeLayout> The ads are shown at the bottom of the screen, just as I want. However, they seem to be overlayed or drawn on top of the bottom portion of the grid view. I would like the gridview to be shorter, so that the ad can fill the bottom portion of the screen, and not hide part of the gridview. The problem is most annoying when you scroll all the way to the bottom of the gridview, and you still cannot fully see the last row items in the grid due to the ad. I'm not sure if this is the standard way that AdMob ads work. If this is the case, adding some padding to the bottom of the grid (if that's possible) would due the trick. That way the user can scroll a bit further, and see the last row in addition to the ad. I just switched from using LinearLayout to RelativeLayout after reading some similar issues with ListViews. Now my ad is along the bottom instead of above the grid, so I'm getting closer. Thoughts? -Kevin

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• Sharing cookies/session from WebView to HttpClient doesn't work

  - by Toni Kanoni

  I know this question has been asked a hundred times, and I've read and tried for 2 hours now, but I can't find my error :-( I am trying to create a simple webbrowser and therefore have a webview, where I login on a site and get access to a picture area. With help of a DefaultHttpClient, I want to make it possible to download pictures in the secured area. Therefore I am trying to share the cookies from the webview and pass them on to the HttpClient, so that it is authenticated and able to download. But whatever I try and do, I always get a 403 response back... Basically the steps are the following: 1) Enter URL, webview loads website 2) Enter login details in a form 3) Navigate to picture and long hold for context menu 4) Retrieve the image URL and pass it on to AsynTask for downloading Here's the code of the AsyncTask with the Cookie stuff: protected String doInBackground(String... params) { //params[0] is the URL of the image try { CookieManager cookieManager = CookieManager.getInstance(); String c = cookieManager.getCookie(new URL(params[0]).getHost()); BasicCookieStore cookieStore = new BasicCookieStore(); BasicHttpContext localContext = new BasicHttpContext(); localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore); String[] cookieParts = null; String cookies[] = null; cookies = c.split(";"); for(int i=0;i<cookies.length;i++) { cookieParts = cookies[i].split("="); BasicClientCookie sessionCookie = new BasicClientCookie(cookieParts[0].trim(), cookieParts[1].trim()); sessionCookie.setDomain(new URL(params[0]).getHost()); cookieStore.addCookie(sessionCookie); } DefaultHttpClient httpClient = new DefaultHttpClient(); httpClient.setCookieStore(cookieStore); HttpGet pageGet = new HttpGet(new URL(params[0]).toURI()); HttpResponse response = httpClient.execute(pageGet, localContext); if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) -- NEVER Happens, always get 403 .) One of the problems is that the webview saves some cookies for the host *www.*example.com, but the image-URL to download (params[0]) is *static.*example.com. The line cookieManager.getCookie(new URL(params[0]).getHost()); returns null, because there is no cookie for static.example.com, but only for www.example.com. .) When I manually say cookieManager.getCookie("www.example.com"); I get some cookies back, which I add to the HttpClient cookie store: There are 5 cookies added - testcookie = 0 - PHPSESSID = 320947238someGibberishSessionId - email = [email protected] - pass = 32423te32someEncodedPassGibberish - user = 345542 So although these cookies, a session ID and other stuff, get added to the HttpClient, it never get's through to download an image. Im totally lost... though I guess that it either has something to do with the cookies domains, or that Im still missing other cookies. But from where the heck should I know which cookies exist in the webview, when I have to specify a specific URL to get a cookie back?? :-( Any advice?

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• What is wrong with my PHP/MySQL code?

  - by James

  I am building a navigation menu which lists all my categories and subcategories. The problem is it returns only one of these and not all. I have the categories echoed inside the while loop so I'm not sure why it's only showing one result and not all: <?php $query = mysql_query("SELECT * FROM categories_parent"); while ($row = mysql_fetch_assoc($query)) { $id = $row['id']; $name = $row['name']; $slug = $row['slug']; $childStatus = $row['child_status']; // if has child categories if ($childStatus == "1") { echo "<li class='dir'><a href='category.php?slug=$slug'>$name</a>"; echo "<ul id='dropdown'>"; $query = mysql_query("SELECT * FROM categories_child WHERE parent=$id"); while ($row = mysql_fetch_assoc($query)) { $id = $row['id']; $name = $row['name']; $slug = $row['slug']; echo "<li><a href='category.php?slug=$slug'>$name</a></li>"; } echo "</ul>"; echo "</li>"; } // if singular parent else { echo "<li><a href='category.php?slug=$slug'>$name</a></li>"; } } ?> My database tables: -- -- Table structure for table `categories_child` -- CREATE TABLE IF NOT EXISTS `categories_child` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(1000) NOT NULL, `slug` varchar(1000) NOT NULL, `parent` int(11) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=139 ; -- -- Dumping data for table `categories_child` -- INSERT INTO `categories_child` (`id`, `name`, `slug`, `parent`) VALUES (138, 'Britney Spears', 'category/celiberties/britney-spears/', 137), (136, 'Tigers', 'category/animals/tigers/', 136), (137, 'Horses', 'category/animals/horses/', 136), (135, 'Lions', 'category/animals/lions/', 136); -- -- Table structure for table `categories_parent` -- CREATE TABLE IF NOT EXISTS `categories_parent` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(1000) NOT NULL, `slug` varchar(1000) NOT NULL, `child_status` int(1) NOT NULL DEFAULT '0', PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=139 ; -- -- Dumping data for table `categories_parent` -- INSERT INTO `categories_parent` (`id`, `name`, `slug`, `child_status`) VALUES (137, 'Celiberties', 'category/celiberties/', 1), (138, 'TV Shows', 'category/tv-shows/', 0), (136, 'Animals', 'category/animals/', 1);

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• What IDE to use for Python

  - by husayt

  As a Python newbie, it is interesting to know what IDE's ("GUIs/editors") others use for Python coding. If you can just give the name (e.g. Textpad, Eclipse ..) that will be enough. If it is already mentioned, you can just vote for it. But if you can also give some more comparative information, that will be much appreciated. Thanks. Update: Results so far PyDev with Eclipse (CP, F, AC, PD, EM, SI, MLS, UML, SC, UT, LN, CF, BM) Komodo (CP, C/F, MLS, PD, AC, SC, SI, BM, LN, CF, CT) Emacs (CP, F, AC, MLS, PD, EM, SC, SI, BM, LN, CF, CT, UT, UML) Vim (CP, F, AC, MLS, SI, BM, LN, CF ) TextMate (Mac, CT, CF, MLS, SI, BM, LN) Gedit (Linux, F, AC, MLS, BM, LN, CT [sort of]) Idle (CP, F, AC) PIDA (Linux, CP, F, AC, MLS, SI, BM, LN, CF)(VIM Based) NotePad++ (Windows) BlueFish (Linux) JEdit (CP, F, BM, LN, CF, MLS) E-Texteditor (TextMate Clone for Windows) WingIde (CP, C, AC, MLS (support for C), PD, EM, SC, SI, BM, LN, CF, CT, UT) Eric Ide (CP, F, AC, PD, EM, SI, LN, CF, UT) Pyscripter (Windows, F, AC, PD, EM, SI, LN, CT, UT) ConTEXT (Windows, C) SPE (F, AC, UML) SciTE (CP, F, MLS, EM, BM, LN, CF, CT, SH) Zeus (W, C, BM, LN, CF, SI, SC, CT) NetBeans (CP, F, PD, UML, AC, MLS, SC, SI, BM, LN, CF, CT, UT, RAD) DABO (CP) BlackAdder (C, CP, CF, SI) PythonWin (W, F, AC, PD, SI, BM, CF) Geany (CP, F, very limited AC, MLS, SI, BM, LN, CF) UliPad (CP, F, AC, PD, MLS, SI, LI, CT, UT, BM) Boa Constructor (CP, F, AC, PD, EM, SI, BM, LN, UML, CF, CT) ScriptDev (W, C, AC, MLS, PD, EM, SI, BM, LN, CF, CT) Spider (CP, F, AC) Editra (CP, F, AC, MLS, SC, SI, BM, LN, CF) Pfaide (Windows, C, AC, MLS, SI, BM, LN, CF, CT) KDevelop (CP, F, MLS, SC, SI, BM, LN, CF) Acronyms used: CP - Cross Platfom C - Commercial F - Free AC - Automatic Code-completion MLS - Multi-Language Support PD - Integrated Python Debugging EM - ErrorMarkup SC - Source Control integration SI - Smart Indent BM - Bracket Matching LN - Line Numbering UML - UML editing / viewing CF - Code Folding CT - Code Templates UT - Unit Testing UID - Gui Designer (e.g. QT, Eric, ..) DB - integrated database support RAD - Rapid app development support I don't mention basics like Syntax highlighting as I expect these by default. This is a just dry list reflecting your feedback and comments, I am not advocating any of these tools. I will keep updating this list as you keep posting your answers. PS. Can you help me to add features of the above editors to the list (like autocomplete, debugging, or etc)?

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• Entity Attribute Value Database vs. strict Relational Model Ecommerce question

  - by Dr. Zim

  It is safe to say that the EAV/CR database model is bad. That said, Question: What database model, technique, or pattern should be used to deal with "classes" of attributes describing e-commerce products which can be changed at run time? In a good E-commerce database, you will store classes of options (like TV resolution then have a resolution for each TV, but the next product may not be a TV and not have "TV resolution"). How do you store them, search efficiently, and allow your users to setup product types with variable fields describing their products? If the search engine finds that customers typically search for TVs based on console depth, you could add console depth to your fields, then add a single depth for each tv product type at run time. There is a nice common feature among good e-commerce apps where they show a set of products, then have "drill down" side menus where you can see "TV Resolution" as a header, and the top five most common TV Resolutions for the found set. You click one and it only shows TVs of that resolution, allowing you to further drill down by selecting other categories on the side menu. These options would be the dynamic product attributes added at run time. Further discussion: So long story short, are there any links out on the Internet or model descriptions that could "academically" fix the following setup? I thank Noel Kennedy for suggesting a category table, but the need may be greater than that. I describe it a different way below, trying to highlight the significance. I may need a viewpoint correction to solve the problem, or I may need to go deeper in to the EAV/CR. Love the positive response to the EAV/CR model. My fellow developers all say what Jeffrey Kemp touched on below: "new entities must be modeled and designed by a professional" (taken out of context, read his response below). The problem is: entities add and remove attributes weekly (search keywords dictate future attributes) new entities arrive weekly (products are assembled from parts) old entities go away weekly (archived, less popular, seasonal) The customer wants to add attributes to the products for two reasons: department / keyword search / comparison chart between like products consumer product configuration before checkout The attributes must have significance, not just a keyword search. If they want to compare all cakes that have a "whipped cream frosting", they can click cakes, click birthday theme, click whipped cream frosting, then check all cakes that are interesting knowing they all have whipped cream frosting. This is not specific to cakes, just an example.

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• javascript arrays and type conversion inconsistencies

  - by ForYourOwnGood

  I have been playing with javascript arrays and I have run into, what I feel, are some inconsistencies, I hope someone can explain them for me. Lets start with this: var myArray = [1, 2, 3, 4, 5]; document.write("Length: " + myArray.length + "<br />"); for( var i in myArray){ document.write( "myArray[" + i + "] = " + myArray[i] + "<br />"); } document.write(myArray.join(", ") + "<br /><br />"); Length: 5 myArray[0] = 1 myArray[1] = 2 myArray[2] = 3 myArray[3] = 4 myArray[4] = 5 1, 2, 3, 4, 5 There is nothing special about this code, but I understand that a javascript array is an object, so properities may be add to the array, the way these properities are added to an array seems inconsistent to me. Before continuing, let me note how string values are to be converted to number values in javascript. Nonempty string - Numeric value of string or NaN Empty string - 0 So since a javascript array is an object the following is legal: myArray["someThing"] = "someThing"; myArray[""] = "Empty String"; myArray["4"] = "four"; for( var i in myArray){ document.write( "myArray[" + i + "] = " + myArray[i] + "<br />"); } document.write(myArray.join(", ") + "<br /><br />"); Length: 5 myArray[0] = 1 myArray[1] = 2 myArray[2] = 3 myArray[3] = 4 myArray[4] = four myArray[someThing] = someThing myArray[] = Empty String 1, 2, 3, 4, four The output is unexpected. The non empty string "4" is converted into its numeric value when setting the property myArray["4"], this seems right. However the empty string "" is not converted into its numeric value, 0, it is treated as an empty string. Also the non empty string "something" is not converted to its numeric value, NaN, it is treated as a string. So which is it? is the statement inside myArray[] in numeric or string context? Also, why are the two, non numeric, properities of myArray not included in myArray.length and myArray.join(", ")?

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• How to stop UITableView moveRowAtIndexPath from leaving blank rows upon reordering

  - by coneybeare

  I am having an issue where in reordering my UITableViewCells, the tableView is not scrolling with the cell. Only a blank row appears and any subsequent scrolling gets an Array out of bounds error without any of my code in the Stack Trace. Here is a quick video of the problem. Here is the relevant code: - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath { return indexPath.section == 1; } - (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath { BOOL ret = indexPath.section == 1 && indexPath.row < self.count; DebugLog(@"canMoveRowAtIndexPath: %d:%d %@", indexPath.section, indexPath.row, (ret ? @"YES" : @"NO")); return ret; } - (void)delayedUpdateCellBackgroundPositionsForTableView:(UITableView *)tableView { [self performSelectorOnMainThread:@selector(updateCellBackgroundPositionsForTableView:) withObject:tableView waitUntilDone:NO]; } - (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath { if (fromIndexPath.row == toIndexPath.row) return; DebugLog(@"Moved audio from %d:%d to %d:%d", fromIndexPath.section, fromIndexPath.row, toIndexPath.section, toIndexPath.row); NSMutableArray *audio = [self.items objectAtIndex:fromIndexPath.section]; [audio exchangeObjectAtIndex:fromIndexPath.row withObjectAtIndex:toIndexPath.row]; [self performSelector:@selector(delayedUpdateCellBackgroundPositionsForTableView:) withObject:tableView afterDelay:kDefaultAnimationDuration/3]; } And here is the generated Stack Trace of the crash: Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000002, 0x0000000000000000 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Application Specific Information: iPhone Simulator 3.2 (193.3), iPhone OS 3.0 (7A341) *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFArray removeObjectsInRange:]: index (6) beyond bounds (6)' Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 CoreFoundation 0x302ac924 ___TERMINATING_DUE_TO_UNCAUGHT_EXCEPTION___ + 4 1 libobjc.A.dylib 0x93cb2509 objc_exception_throw + 56 2 CoreFoundation 0x3028e5fb +[NSException raise:format:arguments:] + 155 3 CoreFoundation 0x3028e55a +[NSException raise:format:] + 58 4 Foundation 0x305684e9 _NSArrayRaiseBoundException + 121 5 Foundation 0x30553a6e -[NSCFArray removeObjectsInRange:] + 142 6 UIKit 0x30950105 -[UITableView(_UITableViewPrivate) _updateVisibleCellsNow] + 862 7 UIKit 0x30947715 -[UITableView layoutSubviews] + 250 8 QuartzCore 0x0090bd94 -[CALayer layoutSublayers] + 78 9 QuartzCore 0x0090bb55 CALayerLayoutIfNeeded + 229 10 QuartzCore 0x0090b3ae CA::Context::commit_transaction(CA::Transaction*) + 302 11 QuartzCore 0x0090b022 CA::Transaction::commit() + 292 12 QuartzCore 0x009132e0 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 84 13 CoreFoundation 0x30245c32 __CFRunLoopDoObservers + 594 14 CoreFoundation 0x3024503f CFRunLoopRunSpecific + 2575 15 CoreFoundation 0x30244628 CFRunLoopRunInMode + 88 16 GraphicsServices 0x32044c31 GSEventRunModal + 217 17 GraphicsServices 0x32044cf6 GSEventRun + 115 18 UIKit 0x309021ee UIApplicationMain + 1157 19 XXXXXXXX 0x0000278a main + 104 (main.m:12) 20 XXXXXXXX 0x000026f6 start + 54 NOte that the array out of bounds length is not the length of my elements (I have 9), but always something smaller. I have been trying to solve this for many hours days without avail… any ideas? UPDATE: More code as requested In my delegate: - (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath { return UITableViewCellEditingStyleNone; } - (NSIndexPath *)tableView:(UITableView *)tableView targetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath *)sourceIndexPath toProposedIndexPath:(NSIndexPath *)proposedDestinationIndexPath { int count = [(UAPlaylistEditDataSource *)self.dataSource count]; if (proposedDestinationIndexPath.section == 0) { return [NSIndexPath indexPathForRow:0 inSection:sourceIndexPath.section]; }else if (proposedDestinationIndexPath.row >= count) { return [NSIndexPath indexPathForRow:count-1 inSection:sourceIndexPath.section]; } return proposedDestinationIndexPath; } …thats about it. I am using the three20 framework and I have not had any issues with reordering till now. The problem is also not in the updateCellBackgroundPositionsForTableView: method as it still crashes when this is commented out.

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• DynamicMethod for ConstructorInfo.Invoke, what do I need to consider?

  - by Lasse V. Karlsen

  My question is this: If I'm going to build a DynamicMethod object, corresponding to a ConstructorInfo.Invoke call, what types of IL do I need to implement in order to cope with all (or most) types of arguments, when I can guarantee that the right type and number of arguments is going to be passed in before I make the call? Background I am on my 3rd iteration of my IoC container, and currently doing some profiling to figure out if there are any areas where I can easily shave off large amounts of time being used. One thing I noticed is that when resolving to a concrete type, ultimately I end up with a constructor being called, using ConstructorInfo.Invoke, passing in an array of arguments that I've worked out. What I noticed is that the invoke method has quite a bit of overhead, and I'm wondering if most of this is just different implementations of the same checks I do. For instance, due to the constructor matching code I have, to find a matching constructor for the predefined parameter names, types, and values that I have passed in, there's no way this particular invoke call will not end up with something it should be able to cope with, like the correct number of arguments, in the right order, of the right type, and with appropriate values. When doing a profiling session containing a million calls to my resolve method, and then replacing it with a DynamicMethod implementation that mimics the Invoke call, the profiling timings was like this: ConstructorInfo.Invoke: 1973ms DynamicMethod: 93ms This accounts for around 20% of the total runtime of this profiling application. In other words, by replacing the ConstructorInfo.Invoke call with a DynamicMethod that does the same, I am able to shave off 20% runtime when dealing with basic factory-scoped services (ie. all resolution calls end up with a constructor call). I think this is fairly substantial, and warrants a closer look at how much work it would be to build a stable DynamicMethod generator for constructors in this context. So, the dynamic method would take in an object array, and return the constructed object, and I already know the ConstructorInfo object in question. Therefore, it looks like the dynamic method would be made up of the following IL: l001: ldarg.0 ; the object array containing the arguments l002: ldc.i4.0 ; the index of the first argument l003: ldelem.ref ; get the value of the first argument l004: castclass T ; cast to the right type of argument (only if not "Object") (repeat l001-l004 for all parameters, l004 only for non-Object types, varying l002 constant from 0 and up for each index) l005: newobj ci ; call the constructor l006: ret Is there anything else I need to consider? Note that I'm aware that creating dynamic methods will probably not be available when running the application in "reduced access mode" (sometimes the brain just won't give up those terms), but in that case I can easily detect that and just calling the original constructor as before, with the overhead and all.

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• Why would Java classloading fail on Linux, but succeed on Windows?

  - by arnsholt

  I've got a Java web application (using Spring), deployed with Jetty. If I try to run it on a Windows machine everything works as expected, but if I try to run the same code on my Linux machine, it fails like this: [normal startup output] 11:16:39.657 INFO [main] org.mortbay.jetty.servlet.ServletHandler$Context.log(ServletHandler.java:1145) 16 Set web app root system property: 'webapp.root' = [/path/to/working/dir] java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.mortbay.start.Main.invokeMain(Main.java:151) at org.mortbay.start.Main.start(Main.java:476) at org.mortbay.start.Main.main(Main.java:94) Caused by: java.lang.ExceptionInInitializerError at org.springframework.web.util.Log4jWebConfigurer.initLogging(Log4jWebConfigurer.java:129) at org.springframework.web.util.Log4jConfigListener.contextInitialized(Log4jConfigListener.java:51) at org.mortbay.jetty.servlet.WebApplicationContext.doStart(WebApplicationContext.java:495) at org.mortbay.util.Container.start(Container.java:72) at org.mortbay.http.HttpServer.doStart(HttpServer.java:708) at org.mortbay.util.Container.start(Container.java:72) at org.mortbay.jetty.Server.main(Server.java:460) ... 7 more Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@15311bd for org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError: org/apache/log4j/Category) (Caused by org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@15311bd for org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError: org/apache/log4j/Category)) at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543) at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235) at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209) at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351) at org.springframework.util.SystemPropertyUtils.(SystemPropertyUtils.java:42) ... 14 more Caused by: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@15311bd for org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError: org/apache/log4j/Category) at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:413) at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529) ... 18 more Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Category at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389) at java.lang.Class.getConstructor0(Class.java:2699) at java.lang.Class.getConstructor(Class.java:1657) at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:410) ... 19 more Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Category at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) ... 24 more [shutdown output] I've run the app with java -verbose:class, and according to that output, org.apache.log4j.Category is loaded from the log4j JAR in my /WEB-INF/lib, just before the first exception is thrown. Now, the Java versions on the two machines are slightly different. Both the machines have Sun's java, the Linux machine has 1.6.0_10, while the Windows machine has 1.6.0_08, or maybe 07 or 06, I can't remember the exact number right now, and don't have the machine at hand. But even though the minor versions of the Javas are slightly different, the code shouldn't break like this. Does anyone understand what's wrong here?

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• for my project I have problem in report

  - by pink rose

  public stack(int size) { this.size=size; Array = new int[size]; } public void push(int j) { if (top < size) { Array[++top] = j; } } public int pop() { return Array[top--]; } public int top() { return Array[top]; } public boolean isEmpty() { return (top == -1); } } import javax.swing.JOptionPane; public class menu { private static stack s; private static int numbers[]; public static void main(String args[]) { start(); } public static void start() { int i = Integer.parseInt(JOptionPane.showInputDialog("1. size of array\n2. data entry\n3. display content\n4. exit")); switch (i) { case 1: setSize(); break; case 2: addElement(); break; case 3: showElements(); break; case 4: exit(); } } public static void setSize() { int size = Integer.parseInt(JOptionPane.showInputDialog("Please Enter The Size")); s = new stack(size); numbers = new int[10]; start(); } public static void addElement() { for(int x=0;x<s.size;x++) { int e = Integer.parseInt(JOptionPane.showInputDialog("Please Enter The Element")); numbers[e]++; s.push(e); } start(); } public static void showElements() { String result = ""; int temp; while (!s.isEmpty()) { temp = s.pop(); if (numbers[temp] == 1) { result = temp+result; } } JOptionPane.showMessageDialog(null, result); start(); } public static void exit() { System.exit(0); } } This my project I was finished but I have problem in question in my report Conclusion. It should summarize the state of your project and indicate which part of your project is working and which part is not working or with limitations. You may also provide your suggestions and comments to this project what I can answer I didn't have any idea

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• for my project I have problem in report

  - by pink rose

  public class stack { private int Array[]; private int top = -1; public int size; public stack(int size) { this.size=size; Array = new int[size]; } public void push(int j) { if (top < size) { Array[++top] = j; } } public int pop() { return Array[top--]; } public int top() { return Array[top]; } public boolean isEmpty() { return (top == -1); } } import javax.swing.JOptionPane; public class menu { private static stack s; private static int numbers[]; public static void main(String args[]) { start(); } public static void start() { int i = Integer.parseInt(JOptionPane.showInputDialog("1. size of array\n2. data entry\n3. display content\n4. exit")); switch (i) { case 1: setSize(); break; case 2: addElement(); break; case 3: showElements(); break; case 4: exit(); } } public static void setSize() { int size = Integer.parseInt(JOptionPane.showInputDialog("Please Enter The Size")); s = new stack(size); numbers = new int[10]; start(); } public static void addElement() { for(int x=0;x<s.size;x++) { int e = Integer.parseInt(JOptionPane.showInputDialog("Please Enter The Element")); numbers[e]++; s.push(e); } start(); } public static void showElements() { String result = ""; int temp; while (!s.isEmpty()) { temp = s.pop(); if (numbers[temp] == 1) { result = temp+result; } } JOptionPane.showMessageDialog(null, result); start(); } public static void exit() { System.exit(0); } } This my project I was finished but I have problem in question in my report Conclusion. It should summarize the state of your project and indicate which part of your project is working and which part is not working or with limitations. You may also provide your suggestions and comments to this project what I can answer I didn't have any idea

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• android service onBind SecurityException

  - by Metalex

  I don't know why but in some devices my service isn't allowed to bind. java.lang.RuntimeException: Unable to create application mypackage.MyApplication: java.lang.SecurityException: Unable to find app for caller android.app.ApplicationThreadProxy@41680e78 (pid=16805) when binding service Intent { cmp=mypackage/.MyService } at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4394) at android.app.ActivityThread.access$1300(ActivityThread.java:141) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1294) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:5039) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.SecurityException: Unable to find app for caller android.app.ApplicationThreadProxy@41680e78 (pid=16805) when binding service Intent { cmp=mypackage/.MyService } at android.os.Parcel.readException(Parcel.java:1425) at android.os.Parcel.readException(Parcel.java:1379) at android.app.ActivityManagerProxy.bindService(ActivityManagerNative.java:2720) at android.app.ContextImpl.bindService(ContextImpl.java:1431) at android.app.ContextImpl.bindService(ContextImpl.java:1407) at android.content.ContextWrapper.bindService(ContextWrapper.java:473) at mypackage.MyApplication.openService(MyApplication.java:151) at mypackage.MyApplication.onCreate(MyApplication.java:110) at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1000) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4391) ... 10 more java.lang.SecurityException: Unable to find app for caller android.app.ApplicationThreadProxy@41680e78 (pid=16805) when binding service Intent { cmp=mypackage/.MyService } at android.os.Parcel.readException(Parcel.java:1425) at android.os.Parcel.readException(Parcel.java:1379) at android.app.ActivityManagerProxy.bindService(ActivityManagerNative.java:2720) at android.app.ContextImpl.bindService(ContextImpl.java:1431) at android.app.ContextImpl.bindService(ContextImpl.java:1407) at android.content.ContextWrapper.bindService(ContextWrapper.java:473) at mypackage.MyApplication.openService(MyApplication.java:151) at mypackage.MyApplication.onCreate(MyApplication.java:110) at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1000) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4391) at android.app.ActivityThread.access$1300(ActivityThread.java:141) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1294) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:5039) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) at dalvik.system.NativeStart.main(Native Method) Code from MyApplication: @Override public void onCreate() { super.onCreate(); openService(); } public void openService() { Intent service = new Intent(this, MyService.class); mConnection = new ServiceConnection() { @Override public void onServiceConnected(ComponentName name, IBinder service) { mService = IMyService.Stub.asInterface(service); if (mListener != null) { mListener.onServiceStarted(mService); } } @Override public void onServiceDisconnected(ComponentName cn) { mService = null; } }; bindService(service, mConnection, Context.BIND_AUTO_CREATE); // 151 line } Please help me! Thank you!

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