[self.tableView deleteSections: [NSIndexSet indexSetWithIndex: section] withRowAnimation: UITableViewRowAnimationLeft];
SELECT * FROM Individual
ORDER BY FirstName, LastName
2. We want to sort files by name - when two files have the same name we sort them by the date time:
NSString * sql = [NSString stringWithFormat: @"SELECT arts.*, tags.name FROM arts, tags WHERE category_id = %d and arts.tag_1 = tags.tag_id and ((tags.name = '%@' and arts.date_touched > '%@') or tags.name > '%@') ORDER BY tags.name LIMIT 1", cur_art.category_id_, cur_name, cur_art.date_touched_, cur_name];
[[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(textFieldTextDidChange:) name: @"UITextFieldTextDidChangeNotification" object: nil];
UIKIT_EXTERN NSString *const UITextFieldTextDidBeginEditingNotification;
UIKIT_EXTERN NSString *const UITextFieldTextDidEndEditingNotification;
UIKIT_EXTERN NSString *const UITextFieldTextDidChangeNotification;
// UITextField.h
// UIKit
//
// Copyright 2005-2009 Apple Inc. All rights reserved.
A UINavigationBar object uses a stack to manage navigation items (instances of UINavigationItem) that represent a state of the navigation bar. You change the navigation bar by pushing navigation items using the pushNavigationItem:animated: method or popping navigation items using thepopNavigationItemAnimated: method. Methods with an animated: argument allow you to animate the changes to the display.
2009-11-26 07:45:11.742 Flip[404:20b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Cannot call pushNavigationItem:animated: directly on a UINavigationBar managed by a controller.'
from stackoverflow:
Your IBOutlets are probably @properties. If they are, and you have retain as an attribute, then you do need to release in -dealloc
A best practice:
self.myoutlet = nil; in dealloc
This works for both the retained and assigned IBOutlet. The retained will release and the assigned will do nothing.
from here:
NSZombieEnabled creates leaks ON PURPOSE so you can track down calls to objects that are released prematurely. When you run with NSZombieEnabled, objects are never dealloced. When it's time to dealloc the object, NSZombieEnabled tells the runtime to turn the object into an instance of NSZombie. Any attempt to message an NSZombie will result in a runtime exception. Always remember to remove the NSZombieEnabled flag before sending an app into production! Due to the fact that dealloc is overridden, your app will never free any memory - it will just grow and grow. It's for testing and debugging only.
1. Drawing NSString in unusual direction : limited to ascii string and have effect like this:
use CGContextShowText(ctxt, tbuf.c_str(), tbuf.length()); and CGAffineTransform
2. CGFontGetGlyphsForUnichars
to draw unichar we need this function to get glyph out of a unichar. Then core graphic has a set of function for showing glyph like this one:
void CGContextShowGlyphsAtPoint (
CGContextRef c,
CGFloat x,
CGFloat y,
const CGGlyph glyphs[],
size_t count
);
but CGFontGetGlyphsForUnichars is a private API for iPhone. So we got:
3. A replacement for CGFontGetGlyphsForUnichars
on github
-----
4. bonus: draw gradient filled UILabel.
also uses: extern void CGFontGetGlyphsForUnichars(CGFontRef, const UniChar[], const CGGlyph[], size_t);
From apple doc:
Called when the controller’s view is released from memory.
- (void)viewDidUnload
This method is called as a counterpart to the viewDidLoad method. It is called during low-memory conditions when the view controller needs to release its view and any objects associated with that view to free up memory.
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
// !!! a hack
// directly remove container from superview, later there's some heart beat callback for smoothing the scrolling
// which will still trying to use the old scroller, and when fails to find, there'll be a BAD ACCESS failure
// here we just delay the remove.
container.alpha = 0.0;
[container performSelector: @selector(removeFromSuperview) withObject: nil afterDelay: 0.1];
- (UIImage *)reflectedImageRepresentationWithHeight:(NSUInteger)height;
CGImageRef AEViewCreateGradientImage (int pixelsWide, int pixelsHigh);
UIImage * img = [UIImage imageNamed: @"balloon.png"];
g_balloon_ = [[img stretchableImageWithLeftCapWidth: img.size.width/2 topCapHeight: img.size.height/2] retain];
assert(g_balloon_.leftCapWidth == (int)(img.size.width/2));
IViewController * controller = [[[MyViewController alloc] init] autorelease];
UIViewAnimationTransition trans = UIViewAnimationTransitionCurlUp;
[UIView beginAnimations: nil context: nil];
[UIView setAnimationTransition: trans forView: [self window] cache: YES];
[navController presentModalViewController: controller animated: NO];
[UIView commitAnimations];
10 breakpoint keep y 0x309323fd <-[UINavigationBar setBarStyle:]+6>
// set the category
// .. get parent
NSArray * viewControllerArray = [self.navigationController viewControllers];
int parentViewControllerIndex = [viewControllerArray count] - 2;
UIViewController * parent_vc = [viewControllerArray objectAtIndex: parentViewControllerIndex];
// .. if the category changed
if(![parent_vc.navigationItem.backBarButtonItem.title isEqualToString: cat_name]){
// update the back button title
UIBarButtonItem *newBackButton = [[UIBarButtonItem alloc] initWithTitle: cat_name style: UIBarButtonItemStyleBordered target: nil action: nil];
parent_vc.navigationItem.backBarButtonItem = newBackButton;
[newBackButton release];
}
NSString * sql = [NSString stringWithFormat: @"SELECT count(0) from %@ WHERE %@ = %d", table, colName, val];
sqlite3_stmt *compiledStatement;
if(sqlite3_prepare_v2(database_, [sql UTF8String], -1, &compiledStatement, NULL) == SQLITE_OK) {
int count = 0;
if(sqlite3_step(compiledStatement) == SQLITE_ROW){
count = sqlite3_column_int(compiledStatement, 0);
}
sqlite3_finalize(compiledStatement);
return count;
}
NSRect outer = [self bounds];
NSPoint outerPoint[4];
outerPoint[0] = NSMakePoint(0, 0);
outerPoint[1] = NSMakePoint(0, outer.size.height);
outerPoint[2] = NSMakePoint(outer.size.width, outer.size.height);
outerPoint[3] = NSMakePoint(outer.size.width, 0);
NSRect inner = NSInsetRect([self bounds], borderSize, borderSize);
NSPoint innerPoint[4];
innerPoint[0] = inner.origin;
innerPoint[1] = NSMakePoint(inner.origin.x,
inner.origin.y + inner.size.height);
innerPoint[2] = NSMakePoint(inner.origin.x + inner.size.width,
inner.origin.y + inner.size.height);
innerPoint[3] = NSMakePoint(inner.origin.x + inner.size.width,
inner.origin.y);
NSBezierPath leftSidePath = [[NSBezierPath bezierPath] retain];
[leftSidePath moveToPoint:outerPoint[0]];
[leftSidePath lineToPoint:outerPoint[1]];
[leftSidePath lineToPoint:innerPoint[1]];
[leftSidePath lineToPoint:innerPoint[0]];
[leftSidePath lineToPoint:outerPoint[0]];
// ... etc.
[leftSidePath release];
