The document provides tips and information about using animations, modal views, and navigation controllers in Xcode projects. It discusses how animations work and how to set them up, how modal views are used to temporarily display content or get user input, and the differences between presenting view controllers modally versus using a navigation controller. It also outlines some common transition styles and when it would be appropriate to use navigation controllers or present view controllers modally.

1. TIPS
Извадки от xCode проекти
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2. BLOCKS & ANIMATIONS
[UIView animateWithDuration:0.3 animations:^{
CGRect newFrame = self.frame;
newFrame.origin.y = 0;
self.frame = newFrame;
self.alpha = 1;
shown = YES;
}
completion:^ (BOOL finished) {
if (finished) {
//shown = YES;
}
}];
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3. ANIMATIONS
• когато изпълняваме анимация стойността, която
променяме получава новата си стойност незабавно
само визуализацията се забавя /в друг thread/
• при прекъсване на анмацията не се изпълнява
completion:^
• анимация може да прекъсва друга анимация и да
продължава от позицията до която е стигнала
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4. ANIMATIONS
- (void)blink {
if (shown) return;
[UIView animateWithDuration:0.3 animations:^{
CGRect newFrame = self.frame;
newFrame.origin.y = 0;
self.frame = newFrame;
self.alpha = 1;
}
completion:^ (BOOL finished) {
if (finished) {
//// Revert image view to original.
sleep(3);
shown = YES;
[self hide:YES];
}
}];
[[NSNotificationCenter defaultCenter]
postNotificationName:kStatusBarPositionChange object:nil userInfo:[NSDictionary
dictionaryWithObject:[NSValue valueWithCGRect:self.frame] forKey:@"frame"]];
}
if ([userInfo objectForKey:@"frame"]) {
Как да вземем frame от Value !
!
!
}
statusBarFrame = [[userInfo objectForKey:@"frame"] CGRectValue];
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5. USERINFO
[[NSNotificationCenter defaultCenter]
postNotificationName:kStatusBarPositionChange object:nil
userInfo:[NSDictionary dictionaryWithObjectsAndKeys:[NSValue
valueWithCGRect:self.frame], @"frame", [NSNumber
numberWithFloat:animationDuration], @"duration", nil]];
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6. CUSTOM BUTTONS
Зареждане на картинки за различни състояния на
UIButtonTypeCustom
imgName = [imgName stringByReplacingOccurrencesOfString:@".png"
withString:@""];
!
[btn setBackgroundImage:[UIImage imageNamed:[NSString
stringWithFormat:@"%@.png", imgName]] forState:UIControlStateNormal];
[btn setImage:[UIImage imageNamed:[NSString
stringWithFormat:@"%@_high.png", imgName]]
forState:UIControlStateHighlighted];
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7. UISCROLLVIEW
Навигация до определен обект
[scrollView scrollRectToVisible:temp
animated:NO];
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8. MODAL VIEWS
Different view hierarchy
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9. ЗА КАКВО СЕ ИЗПОЛЗВАТ?
• Незабавно събиране на информация от потребителя
• Временно показване на съдържание
• Промяна на работната среда
• Различни интерфейси за различните ориентации
• Нова иерархия от UIView
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10. current task or workflow.
To learn more about defining a modal view in your code, see UIViewController Class Reference .
MODAL VIEW
Appearance and Behavior
A modal view occupies the entire application screen, which strengthens the user’s perception of entering a
Необходим е отговор преди потребителят да може да
separate, transient mode in which they can accomplish something. On iPad, a modal view might also occupy
the entire area of a parent view, such as a popover.
продължи the controls necessary to perform the task. A modal
A modal view can display text if appropriate, and contains
view generally displays a button that completes the task and dismisses the view, and a Cancel button users
Thursday, January 26, 12 can tap to abandon the task.

11. MODALVIEW УПОТРЕБА
Transition
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12. ЗА КАКВО СЕ ИЗПОЛЗВА?
Drawing canvas
писане на
писмо
Drawing canvas
временно
представяне
Organizer
Help
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13. UIModalPresentati
Presenting View Controllers From Other View Controllers
Configuring the Presentation Style for Modal Views
IPAD PRESENTATION STYLES
Figure 9-4 iPad presentation styles
UIModalPresentationFullScreen UIModalPresentati
Presenting View Controllers From Other View Controllers
Configuring the Presentation Style for Modal Views
Figure 9-4 iPad presentation styles
UIModalPresentationFullScreen UIModalPresentationPageSheet UIModalPresentati
For guidance on when to use the different presentation styles, see “Po
Guidelines .
UIModalPresentationFullScreenUIModalPresentationPageSheet
UIModalPresentationPageSheet UIModalPresentationFormSheet
UIModalPresentationFormSheet
2012-‐01-‐09 | © 2012 Apple Inc. All Rights Rese
85
For guidance on when to use the different presentation styles, see “Popover (iPad Only)” in iOS Human Interface
Guidelines .
UIModalPresentationFormSheet
2012-‐01-‐09 | © 2012 Apple Inc. All Rights Reserved.
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14. IDESK - SEND EMAIL
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15. Presenting View Controllers From Other View Controllers
About View Controller Presentation
PRESENT MODAL
and then presents another view controller (the people picker) in response to that action. Selecting a contact
(or canceling the people picker) dismisses that interface and takes the user back to the photo library. Tapping
the Done button then dismisses the photo library and takes the user back to the camera interface.
Figure 9-2 Creating a chain of modal view controllers
Camera Photo library Action sheet People picker
view controller navigation controller navigation controller
present present
modally modally
Each view controller in a chain of presented view controllers has pointers to the other objects surrounding it
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16. TRANSITIONS
Vertical slide Flip PartialCurl
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17. NAVIGATION OR MODAL
Как да изберем?
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18. NAVIGATION / MODAL VIEW
Необходимо е потребителят да въведе текст
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19. NAVIGATION / MODAL VIEW
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20. NAVIGATIONCONTROLLER
push push push
pop pop pop
[self.navigationController pushViewController:tableVC animated:YES];
[self.navigationController popViewControllerAnimated:YES];
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21. РАЗЛИКАТА
push push push
pop pop pop
present
dismiss
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22. MODALVIEWCONTROLLER
present
dismiss
[self presentModalViewController:tableVC animated:YES];
[self dismissModalViewControllerAnimated:YES];
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23. ЗА СЛЕДВАЩИЯТ ПЪТ
• nsnotification & targets
• blocks
• nstimer
• mapKit
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