Codec ░ Georg Tremmel

76Header Search Paths

Search for "Header Search Paths" in Project Info, and add the path to your headers. (MacPorts headers live in /opt/local/include)

Also: #include is for System Header files.

#include "display.h" is for User Header files

73Concatenating Strings @”string1″ @”string2″ @”stringN”

That's basically it.

No more [@"string1" stringByAppendingString:@"string2"];

or [NSString stringWithFormat:@"string1%@", @"string1"];

just @"string1" @"string2" @"stringN" -> code>@"string1string2stringN"</code

The Objective-C 2.0 Programming Language.pdf, p131

add combine concatenate directive NSString string

71UIActivityIndicatorView size -> 20px

height: 20px width: 20px

all styles typedef enum { UIActivityIndicatorViewStyleWhiteLarge, UIActivityIndicatorViewStyleWhite, UIActivityIndicatorViewStyleGray, } UIActivityIndicatorViewStyle;

indicator size UIActivityIndicatorView

67oF on iF

openFrameworks on iPhone, now finally public.

http://www.memo.tv/ofxiphone http://www.jeffcrouse.info/uncategorized/openframeworks-on-iphone/

i shall attempt to install it, and report back then. in the meantime too busy with the wolf.

update: installation was a breeze, the demos are running quite nicely. (of course you did not forget changing the code-signing in the target to your id). curious to find out what the hardware can do. and finally no more excuses of not getting into oF.

code framework installation iPhone oF open sign

65wolf3d

The granddaddy of the FPS at your fingertips.

http://www.idsoftware.com/wolfenstein3dclassic/

buy at app store - or download the source code for free!!!

(just change the code signing settings to your id. you should really know how to do this.)

3d free source wolf

63UIButton backgroundImage

[button setBackgroundImage:image forState:UIControlStateNormal]; [button setImage:overlay forState:UIControlStateHighlighted];

use one image as button background, another - preferrable at least paratly transparent - as overlay when highlighted.

setBackgroundImage setImage UIButton

61loadView vs. viewDidLoad

viewDidLoad only if the view is unarchived from a nib, method is invoked after view is set.

loadView only invoked when the view proberty is nil. use when creating views programmatically. default: create a UIView object with no subviews.

- (void)loadView { 
    UIView *view = [[UIView alloc] initWithFrame:[UIScreen 
mainScreen].applicationFrame]; 
    [view setBackgroundColor:_color]; 
    self.view = view; 
    [view release]; 
}

By implementing the loadView method, you hook into the default memory management behavior. If memory is low, a view controller may receive the didReceiveMemoryWarning message. The default implementation checks to see if the view is in use. If its view is not in the view hierarchy and the view controller implements the loadView method, its view is released. Later when the view is needed, the loadView method is invoked again to create the view.

loadView self.view view viewDidLoad

58Delay method execution & passing objects along the way

Specific example. Deselect table cell after a certain time. TableView and indexPath are wrapped into an array and send along to the method for delayed execution.



(void)tableView:(UITableView )tView didSelectRowAtIndexPath:(NSIndexPath )indexPath {
NSLog(@"User selected row %d\n", [indexPath row] + 1);
// actions
[self performSelector:@selector(deselectTableCell:) withObject:[NSArray arrayWithObjects:tView, indexPath, nil] afterDelay:0.2f];
}

-(void) deselectTableCell:(NSArray *)array { [[ [array objectAtIndex:0] cellForRowAtIndexPath:[array objectAtIndex:1] ] setSelected:NO]; NSLog(@"deselectTableCell" ); }

In additon to http://codec.trembl.org/35/

delay method performSelector time