Initially I thought the code presented below was working, the "inBuffer" seems to be correctly getting 4-bytes of data, also the variable MDD_times is correct. NSData *inBuffer; float MDD_times; // FLOAT_002 inBuffer = [inFile readDataOfLength:sizeof(float)]; [inBuffer getBytes: &MDD_times length:sizeof(float)]; NSLog(@"Time: %f", MDD_...
I cannot find documents about the way, in which Interface Builder determines the Sent Message outlets for the graphical connections between components triggering events and messages of other components. I want to generate components encapsulating Finite State Automata. The input part is simple, just define IBAction messages and you can c...
I want to create a subclass of UINavigationController which always starts with the same root controller. Nothing special, so (to me) it makes perfect sense to override the init method like this: - (id) init { rootController = [[MyController alloc] init]; if (self = [super initWithRootViewController:rootController]) { // do...
I've been googling around to try to figure out what sort of event handles are called when one row (or cell) in a UITableView is tapped, but haven't been able to figure it out. I'm trying to change the image property of the cell when it's tapped. Thanks. ...
How can I get a list of the names of all currently running processes? (In C/Objective-C on Mac OS X.) ...
I always wonder if it's correct to say that something like THIS is a "pointer", rather than a "variable": NSString *fooStr = ...; Would you call "fooStr" a "pointer" rather than a "variable"? Or is it okay to say both here? ...
I was doing a rather ordinary addPersistentStore to an NSPersistentStoreCoordinator, and it generated an &error code. So I went to NSLog it, and got an access error when I did this: NSLog(@"Unresolved error %@, %@", error, [error userInfo]); which seems to be the common idiom. When I reformatted the error statement as follows: ...
Hi, I started with core-plot now and came to some problems. I followed the tutorial from this page: http://www.switchonthecode.com/tutorials/using-core-plot-in-an-iphone-application and completed with the instructions from this page: http://code.google.com/p/core-plot/wiki/UsingCorePlotInApplications (such as -all_load). But I still h...
Update I fixed up the code to eliminate duplication of overridden methods and track originator of property or method by implementing Mark's suggestion. Haven't tackled property types yet (will probably start with property_getAttributes() when I do). Also stripped out vestigial underscores. Basically I need a way to remind myself what ...
Here is the scenerio: The user copies random text with mixed fonts. How do I determine the font(s) used? When the text is pasted from the UIPasteboard into a textview it correctly shows the mixed fonts, so I believe the information is available. UIPasteboard *pasteboard = [UIPasteboard generalPasteboard]; textView.text = pasteboard.stri...
how do were clear an NSMutatableData wihtout using release and then re-alloc/init again to be used again? I was looking at resetBytesInRange to be set at zero but I am unsure of this. Anyone can help? ...
The following code compiles fine when compiling as Mac OSX 10.6 as the active SDK (linked with the 10.5 frameworks, 10.5 set as the base SDK) IOBluetoothHostController *controller = [IOBluetoothHostController defaultController]; However, if I compile it with Mac OSX 10.5 as the active SDK, I get an error message saying that IOBluetoot...
I've got a custom UITableViewCell subview that has a button on it which has a background color representing a priority. The user is allowed to drag the cells around in the table, which changes the priority of the object represented by that row. I want to update the color of the button when they're done, so I've implemented this: - (vo...
I have data stored in a sqlite3 database and have several places that I read and write data to and from the database. The problem I am running into is that if the SQL statement gets to be very long the sqlite3_prepare_v2 method returns an error. This code works: NSString *strSQL = @"UPDATE commandList SET displayName=?, type=?, formula...
I have this snippet of objective c code: UIImage *image = [ [UIImage alloc] initWithContentsOfFile:fileName]; fileName is set to "file1.jpg" When I run the code, however, image is set to nil. I know the file does exist I am guessing it has something to do with the path. What path should I be using? ...
I am trying to find the full path for a file called 'file1.jpg' I have verified that it is in the app bundle and yet when I run this code: NSBundle* myBundle = [NSBundle mainBundle]; NSString* path = [myBundle pathForResource:@"file1" ofType:@"jpg"]; 'path' doesn't have the path/file i'm expecting. This is code directly from the ...
I have found that very often, when calling myMethod asoociated with myObject1 from myObject2, I get the warning that "myObject1 may not respond to -myMethod", but then the program runs just fine anyway. Why doesn't the compiler recognize declared methods at compile time? John Doner ...
I am building an RSS reader with a GUI very similar to the built-in mail app. It uses Core Data to store the information once it is downloaded. When a story is downloaded, it has a blue dot to indicate it is new. Once I go back to the main page after reading a story the dot should be gone. It stays there until I scroll or relaunch the ap...
Here is my code: for (NSManagedObject *object in array) { if ([[object valueForKey:@"DueDate"] isLessThan:[NSDate date]]) { count++; NSLog(@"Looped"); NSString *test = [[NSString alloc] initWithFormat:@"%@", [object valueForKey:@"DueDate"]]; NSLog(@"%@", test); } } NSLog(@"%i", count); NSDockTile *aTitle = [[NSApplication shar...
Hi all, I am working on an image upload from iphone to an C# web service. Here is the iPhone code NSString *soapMessage=[NSString stringWithFormat: @"<?xml version=\"1.0\" encoding=\"utf-8\"?>" "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:so...