Igor Delovski Board

[Ike]

Under The Bridge - full screen presentModalViewController

"Today we have a little iPhone user interface programming problem to
present to you with its not so self evident solution, courtesy of the kind
assistance of one Bryan Henry on the iphonesdk list."

[Ike]

Bill Dudney: Presenting Modal Views Bug

"When you present a modal view controller via the -presentModalViewCont-
roller:animated: method the viewWillAppear: method gets called on the mo-
dal view controller before the view is actually loaded."

[delovski]

SO - Is parentViewController always a Navigation controller?

"The update to page 1 wasn't happening, and it took me a long time to
realize that the "doSomethingPleaseWithSomeData" message was not be-
ing sent to Page1ViewController, but the Navigation Controller."

ADC - parentViewController somewhat misleading:

"The underlying view controller if this view controller is a modal view cont-
roller; otherwise, the enclosing navigation or tab bar controller."

[delovski]

Modal UIViewController title not showing

"I have a UIViewController object which is being presented as a modal view,
but I am unable to set the view title. I want the title to vary depending on
the context."

[delovski]

iphonedevsdk.com - Webservice load wait

"So here how I code this

1) I'm loading and displaying UINavigationController with a root view con-
troller
2) Asking a web service for data and loading UIView with activity indicator
as a root view controller's view
3) Once the data from web service is ready I animate the opacity of the
root controller's view to 0.0 and then I'm replacing it with the UITableVi-
ew ..."

[delovski]

mf - dismissModalView

"I have a bunch a views connected through buttons by using the command
presentModalView."

[delovski]

MF - Modal UIViewController that doesnt cover all screen

"With the normal invocation, the modal's view is resized to be as high as
the screen (460px) and slides all the way to the top. i tried forcing the size
and the y origin back to what i need in viewDidLoad and viewWillAppear:
with no effect."

[delovski]

Jeff LaMarche - Implementing a Wait "Alert"…

"Now, you should be very careful about using something like this. You
really don't want to annoy your users, so you should only do this when
it's absolutely necessary and only show it for short periods of time."

[delovski]

Jeff LaMarche - Custom Alert Views

"What you can do, however, is create your own class that simulates the be-
havior of UIAlertView. You can find a sample implementation of the techni-
que discussed in this post by downloading this project. In this simple exam-
ple, we're going to create an alert view that lets the user enter a value into
a single text field."

Next day: Some Good Advice

"Joe posted some code to replace the gradient background in the previous
post. Admonished for my laziness and inspired to make the code better, I
incorporated his suggestion."

[delovski]

so - UIActionSheet cancel button strange behaviour

"If you call UIActionSheet's [sheet showInView:self.view] from a view con-
troller that is a child of a UITabViewController, then the hit testing on the
cancel button fails in that portion of the UIActionSheet that lies above the
tabbar's view."

[delovski]

meekismurder.com - UIActionSheet Cancel Button Blocked In TabBar App


"Instead of showing the ActionSheet in self.view like normal, show it in
the App Delegate Window instead, ensuring it’s on top of everything,
here’s how:

[delovski]

MF - Where in Cocoa can I find an infinite loop??

"Maybe use a CFRunLoopObserver. Google it. Read its reference docs.
Then look up CFRunLoop and NSRunLoop's getCFRunLoop method."

[delovski]

bitesizecocoa.com - How to get an alert view background in your
iPhone app

"Sometimes you may want to mimic the look of a UIAlertView without
showing the actual alert itself. For example, you may have a HUD style
modal alert. The UIAlertView background is a vignette style overlay that
sits in between the current view and the alert dialog itself."

[XNote]

http://bitesizecocoa.com/post/534045912/how-to-get-an-alert-view-background-in-your-iphone-app

[delovski]

UIAlertViewDelegate Protocol Reference

- (void)alertViewCancel:(UIAlertView *)alertView;

// Called when we cancel a view (eg. the user clicks the Home button). This
// is not called when the user clicks the cancel button.
// If not defined in the delegate, we simulate a click in the cancel button

[delovski]

MF - Alert after App is "closed" (Home button pressed)

"I think this Apple Doc (the UILocalNotification Class Reference,) aught to
tell you everything you need to know:

UILocalNotification Class Reference

with maybe a little help from this tutorial:

iPhone Programming Tutorial – Local Notifications

(I'm tempted to do even more and write your code for you as I'm intrigued
by the idea of using local notifications to pop an alert right as the app
closes.)"

[delovski]

blog.codecropper.com - Replicating TweetBot’s Alerts and Action Sheets

"Since the first time I had to use an UIActionSheet or UIAlertView in an app
I disliked the way it was implemented. It was a pain if you had two kinds of
alerts in the same class for example as everything is done by invoking a
delegate method. I also disliked the fact that the code that should be exe-
cuted in the event of a button was almost always in a separate place in your
source code. The code needs a lot of constants, switches and you need to
tag your UIAlertView…. I hated it!"

[Ike]

YRDropdownView – A Polite UIAlertView Alternative for iOS

"YRDropdownView is an iOS library for displaying stylish alerts, warnings,
and errors"

[delovski]

Ajnaware’s Weblog - Dynamically adding UIActionSheet buttons

"The problem with this becomes apparent when you run it – the cancel button
appears at the TOP of the sheet, whereas standard practice seems to be that
it should be at the bottom. How to achieve this?"

[Ike]

so - How to create colored or translucent background for UIActionSheet?

"When you try deleting a note in iPhone's Notes application, an UIActionSheet
pops up. The sheet is translucent (but not black translucent). How is that
achieved? Is it possible to make the background of UIActionSheet a certain
color?"

[delovski]

so - How to implement a pop up dialog box in iOS

"I highly recommend reading the Temporary Views documentation. My answer
is largely a summary of this and other related documentation."

Alert (show me an example)
Action Sheet (show me an example)
Modal View (show me an example)
Popover (show me an example)

[delovski]

rw - UIPresentationController Tutorial: Getting Started

"In this UIPresentationController tutorial you'll learn how to present view
controllers with custom transitions and custom presentation styles. No longer
will you be limited to full-screen or popover presentations and the standard
transition animations. You'll start with some drab, lifeless view controller
presentations and you'll bring them to life."

[delovski]

appcoda - A Beginner's Guide to Presentation Controllers in iOS 8

"We'll subclass UIPresentationController (which was introduced in iOS 8) to
provide view and transition management for presented view controllers.

Presentations usually consist of three major parts: the presented view con-
troller, presenting view controller and the chrome. Looking at a typical pre-
sentation below, you can see these views. For apps shipped by Apple, the
chrome is usually a grey semi-transparent view, but you have the freedom
to style it however you want."

[delovski]

pspdfkit - Presentation Controllers and Adaptive Presentations

"PSPDFKit is written in Objective-C so all the code samples in this article are
too, although our problems are with UIKit and are equally applicable when
using Swift. You can read more about the problems discussed here and find
sample projects by following the Radar links."

[delovski]

so - UIPopoverPresentationController on iOS 8 iPhone

"If anybody wants to present a popover with code only, you can use the following approach."

[delovski]

github.com - FPPopover

"This library provides an alternative to the native iOS UIPopoverController,
adding support for iPhone and additional opportunities to customize the look
and feel of the popovers.

The development started as first as a Mobiloud open source component, after
some commits we realized was a appreciated library so I decided to continue
the development, also the development is continuing thank to your feedbacks
and pull requests!"

[delovski]

so - Change Action sheet popover arrow in iOS8

"use below line for remove arrow from action sheet"

"The selected answer does not center the alert if you have a nav/status bar.
To exactly center your alert controller..."

[delovski]

so - UIActionSheet deprecated on iOS8

[delovski]

so - UITextField in UIAlertController (border, backgroundColor)

"I figured this out by walking the view hierarchy in the debugger, from which I
noticed a UIVisualEffectView. Removing that seems to give you what you want
along with setting the containing view to a clear background. Without removing
the visual effect, a clear background shows what is behind the alert view itself
for some reason."

Code:

UIAlertController *alertController =  [UIAlertController alertControllerWithTitle:@"Its Not Pretty!"                                      message:@"Some times things get ugly!"                                                        preferredStyle:UIAlertControllerStyleAlert]; [alertController addTextFieldWithConfigurationHandler:^(UITextField *textField){     textField.text = @"Text: No border and clear 8^)";  }]; [self presentViewController:alertController animated:TRUE completion:^{ }]; for (UIView* textfield in alertController.textfields) {     UIView *container = textField.superview;     UIView *effectView = container.superview.subviews[0];     if (effectView && [effectView class] == [UIVisualEffectView class]){         container.backgroundColor = [UIColor clearColor];         [effectView removeFromSuperview];     } }

[delovski]

so - How to present UIAlertController when not in a view controller

[Ike]

https://pspdfkit.com/blog/2016/popovers-on-popovers/

Preventing Popovers on Popovers

Show one popover at a time. Displaying multiple popovers clutters the interface and causes confusion. Never show a cascade or hierarchy of popovers, in which one emerges from another. If you need to show a new popover, close the open one first.

[delovski]

sarun - Modality changes in iOS13

"One behavior that changed and might break your old app once you starting
adopting new iOS 13 is the modal presentation. So with iOS 13, default
presentation for modal is now in sheet style."

[Ike]

https://old.reddit.com/r/iOSProgramming/comments/deodwq/ios_13_do_we_need_to_add_fullscreen_to_every/

iOS 13 - Do we need to add .fullScreen to EVERY present() call we do now?