UITabbarItem BadgeValue Text Color - objective-c

I have a problem in my App. I set a badge value at one of the tabs in the UITabBar. The Badge value is correctly red and the circle around the badge value is correctly in white. The problem is, that the color of the text is gray (160, 160, 160). It is the same color like the normal state tabbaritem text is, but I set this color nowhere in the app code and I do not know where this color come from.
I searched for that issue in the whole net since weeks but I cannot find any solution. The only answer I found everywhere is, that it is not possible to change the color of the text of the badge value. But if it is not possible, why is it changed in my app?
I hope, that somebody can help me with that issue...
http://www.luventas-webdesign.de/stackoverflow/screenshot_badgevalue.png
Like the color is in my app
http://www.luventas-webdesign.de/stackoverflow/screenshot_like_it_should.png
Like the color should normally be...
Edit 02.11.2012 - Code
Creation of TabBarController:
#import "ExtendedTabBarController.h"
#import "configuration.h"
#implementation ExtendedTabBarController
- (void)viewDidLoad {
[super viewDidLoad];
[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIColor colorWithRed:207.0/255.0 green:70.0/255.0 blue:61.0/255.0 alpha:1], UITextAttributeTextColor, [UIFont fontWithName:#"KievitPro-Regular" size:10.0], UITextAttributeFont, nil] forState:UIControlStateSelected];
[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIColor colorWithRed:255.0/255.0 green:255.0/255.0 blue:255.0/255.0 alpha:1], UITextAttributeTextColor, [UIFont fontWithName:#"KievitPro-Regular" size:10.0], UITextAttributeFont, nil] forState:UIControlStateNormal];
[self.tabBar sizeToFit];
UIView *tabbarBackgroundColorView = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0, self.view.bounds.size.width, 49)];
[tabbarBackgroundColorView setBackgroundColor:[UIColor colorWithRed:233.0/255.0 green:233.0/255.0 blue:233.0/255.0 alpha:1]];
[self.tabBar insertSubview:tabbarBackgroundColorView atIndex:0];
}
- (void)viewDidUnload {
[super viewDidUnload];
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return UIInterfaceOrientationIsPortrait(interfaceOrientation); // only portrait orientation
}
/**
* orientation for iOS6
**/
-(NSUInteger)supportedInterfaceOrientations{
return UIInterfaceOrientationMaskPortrait;
}
#end
Call in AppDelegate:
ExtendedTabBarController *tabBarController = [[ExtendedTabBarController alloc] init];
[self setTabBarController:tabBarController];
[[UITabBar appearance] setBackgroundImage:[UIImage imageNamed:#"menu_bg"]];
// code for initialize View- and NavigationControllers...
self.tabBarController.viewControllers = #[highlightsNavigationController, categoryNavigationController, searchNavigationController, favoritesNavigationController, imprintNavigationController];
self.window.rootViewController = self.tabBarController;
[[UITabBar appearance] setSelectionIndicatorImage:[[UIImage alloc] init]];
Set the badge value:
int viewCount = 0;
NSUserDefaults * defs = [NSUserDefaults standardUserDefaults];
NSDictionary * dict = [defs dictionaryRepresentation];
for (id key in dict) {
if([key rangeOfString:#"_highlighted"].location != NSNotFound && [[[dict objectForKey:key] objectAtIndex:0] isEqualToString:#"YES"]) {
viewCount++;
}
}
UITabBarItem *tbi = (UITabBarItem *)[self.tabBarController.tabBar.items objectAtIndex:3];
if(viewCount <= 0) {
tbi.badgeValue = nil;
} else {
tbi.badgeValue = nil;
tbi.badgeValue = [NSString stringWithFormat:#"%d", viewCount];
}
Code for overwritten UILabel:
// -- file: UILabel+VerticalAlign.h
#pragma mark VerticalAlign
#interface UILabel (VerticalAlign)
- (void)alignTop;
- (void)alignBottom;
- (void)awakeFromNib;
-(id)initWithFrame:(CGRect)frame;
#end
#import "UILabel+VerticalAlign.h"
// -- file: UILabel+VerticalAlign.m
#implementation UILabel (VerticalAlign)
- (void)alignTop {
CGSize fontSize = [self.text sizeWithFont:self.font];
double finalHeight = fontSize.height * self.numberOfLines;
double finalWidth = self.frame.size.width; //expected width of label
CGSize theStringSize = [self.text sizeWithFont:self.font constrainedToSize:CGSizeMake(finalWidth, finalHeight) lineBreakMode:self.lineBreakMode];
int newLinesToPad = (finalHeight - theStringSize.height) / fontSize.height;
for(int i=0; i<newLinesToPad; i++)
self.text = [self.text stringByAppendingString:#"\n "];
}
- (void)alignBottom {
CGSize fontSize = [self.text sizeWithFont:self.font];
double finalHeight = fontSize.height * self.numberOfLines;
double finalWidth = self.frame.size.width; //expected width of label
CGSize theStringSize = [self.text sizeWithFont:self.font constrainedToSize:CGSizeMake(finalWidth, finalHeight) lineBreakMode:self.lineBreakMode];
int newLinesToPad = (finalHeight - theStringSize.height) / fontSize.height;
for(int i=0; i<newLinesToPad; i++)
self.text = [NSString stringWithFormat:#" \n%#",self.text];
}
- (void)awakeFromNib
{
[super awakeFromNib];
[self setFont:[UIFont fontWithName:#"KievitPro-Regular" size:12.0]];
}
-(id)initWithFrame:(CGRect)frame
{
id result = [super initWithFrame:frame];
if (result) {
[self setFont:[UIFont fontWithName:#"KievitPro-Regular" size:12.0]];
}
return result;
}
#end

I found a solution for my problem on my own:
I must remove the following lines from the overwritten UILabel:
- (void)awakeFromNib
{
[super awakeFromNib];
[self setFont:[UIFont fontWithName:#"KievitPro-Regular" size:12.0]];
}
-(id)initWithFrame:(CGRect)frame
{
id result = [super initWithFrame:frame];
if (result) {
[self setFont:[UIFont fontWithName:#"KievitPro-Regular" size:12.0]];
}
return result;
}
Maybe someone can explain me, why this lines change the text color of the badge value, before we can close this post?

Instead of setting the default UILabel font using a category, use the UILabel's appearance method to set the font:
[[UILabel appearance] setFont:[UIFont fontWithName:#"KievitPro-Regular" size:12.0]];
When I tested this the text for the badge appeared as the normal white color.

Related

how to change UISearchBar textfield background color and text color in ios8

I used below code for changing UISearchBar textfield background color.
[[UITextField appearanceWhenContainedIn:[UISearchBar class], nil] setDefaultTextAttributes:#{
NSForegroundColorAttributeName : [UIColor redColor],
NSFontAttributeName : [UIFont systemFontOfSize:15]
}];
but it does not work for me, can any one give solution.
thanks in advance
Try this:
UITextField *searchField = [self.searchBar valueForKey:#"searchField"];
// To change background color
searchField.backgroundColor = [UIColor blueColor];
// To change text color
searchField.textColor = [UIColor redColor];
// To change placeholder text color
searchField.attributedPlaceholder = [[NSAttributedString alloc] initWithString:#"Some Text"];
UILabel *placeholderLabel = [searchField valueForKey:#"placeholderLabel"];
placeholderLabel.textColor = [UIColor grayColor];
Just try this code
[[UITextField appearanceWhenContainedIn:[UISearchBar class], nil] setBackgroundColor:[UIColor grayColor]];
OR
Try this
- (void)viewDidLoad
{
[super viewDidLoad];
//change the background color
[[self searchViewForTextFieldBg:self.searchTextfield] setBackgroundColor:[UIColor grayColor]];
//change the textcolor
self.searchTextfield.textColor =[UIColor greenColor];
}
- (UITextField*)searchViewForTextFieldBg:(UIView*)view
{
if ([view isKindOfClass:[UITextField class]]) {
return (UITextField*)view;
}
UITextField *searchTextField;
for (UIView *subview in view.subviews) {
searchTextField = [self searchViewForTextFieldBg:subview];
if (searchTextField) {
break;
}
}
return searchTextField;
}

Adding non editable NSTextField as a label into another NSTextField

I am trying to implement a custom NSTextField that a) changes color when active and b) has a label in the top left hand corner.
I have the following implementation:
In TestTextField.h
#interface TestTextField : NSTextField
- (id)initFullWidthWithLabel:(NSString *)label andPreset:(NSString *)preset;
...
#end
In TestTextField.m
#interface TestTextField() {
BOOL _thisFieldIsActive;
}
#property (nonatomic, strong) NSTextField *label;
#end
#implementation TestTextField
- (id)initFullWidthWithLabel:(NSString *)label andPreset:(NSString *)preset {
self = [super initWithFrame:NSZeroRect];
if (self) {
_thisFieldIsActive = NO;
[self setFocusRingType:NSFocusRingTypeNone];
// small label top left
_label = [[NSTextField alloc] initWithFrame:NSZeroRect];
_label.stringValue = label;
if (preset) {
self.stringValue = preset;
}
else {
self.stringValue = #"0";
}
[self layoutUI];
}
return self;
}
- (void)turnActiveOff {
[self toggleActive:NO];
}
- (void)toggleActive:(BOOL)active {
_thisFieldIsActive = active;
if (_thisFieldIsActive) {
self.backgroundColor = [NSColor blueColor];
self.textColor = [NSColor whiteColor];
_label.textColor = [NSColor whiteColor];
}
else {
self.backgroundColor = [NSColor clearColor];
self.textColor = [NSColor blackColor];
_label.textColor = [NSColor grayColor];
}
}
- (BOOL)becomeFirstResponder {
NSLog(#"BecomeFirstResponder");
[self selectText:self];
[self toggleActive:YES];
return [super becomeFirstResponder];
}
- (void)textDidEndEditing:(NSNotification *)notification {
NSLog(#"DidEndEditing");
[self toggleActive:NO];
[super textDidEndEditing:notification];
}
- (void)layoutUI {
self.alignment = NSRightTextAlignment;
self.font = [NSFont fontWithName:#"HelveticaNeue-Light" size:32.0f];
self.layer.borderColor = [NSColor whiteColor].CGColor;
self.layer.borderWidth = 1.0f;
[self.layer setCornerRadius:4.0f];
// small label top left
_label.font = [NSFont fontWithName:#"HelveticaNeue-Light" size:12.0f];
_label.alignment = NSLeftTextAlignment;
_label.textColor = [NSColor grayColor];
_label.stringValue = [_label.stringValue uppercaseString];
_label.selectable = NO;
_label.editable = NO;
_label.drawsBackground = NO;
_label.bezeled = NO;
[self addSubview:_label];
NSDictionary *metrics = #{#"borderPadding": #5};
_label.translatesAutoresizingMaskIntoConstraints = NO;
[self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:#"H:|-(borderPadding)-[_label(100)]" options:0 metrics:metrics views:#{ #"_label" : _label }]];
[self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:#"V:|-(borderPadding)-[_label(30)]" options:0 metrics:metrics views:#{ #"_label" : _label }]];
}
In my ViewController I implement these TestTextFields by simply calling the custom initFullWidthWithLabel:andPreset: method and adding them as a subview to the VCs view
I can see that the label gets positioned correctly, however as soon as the the field becomes active and the backgroundColor is set, it seems to cover up the label. How can I make sure the label stays on top?
Even when the backgorund coloring is turned off, the label remains hidden.
Thanks
The core of the solution was to use a custom subclassed NSTextFieldCell with one method:
- (NSRect)drawingRectForBounds:(NSRect)rect {
NSRect rectInset = NSMakeRect(rect.origin.x + 100.0f, rect.origin.y, rect.size.width - 100.0f, rect.size.height);
return [super drawingRectForBounds:rectInset];
}

Blue Highlight around Custom NSButton

I want to make a custom NSButton with a solid color for its background but there is this blue highlight around the button that I can't figure out how to get rid of. Does anyone know how to get rid of it?
Thanks!
EDIT:
Here's the code for the button:
#implementation ZDButton
- (id)init {
if (self = [super init]) {
self.title = #"";
self.isSelected = false;
[self setBordered:NO];
[self setBackgroundColor:[NSColor whiteColor]];
}
return self;
}
- (void)drawRect:(NSRect)dirtyRect {
[super drawRect:dirtyRect];
[[NSColor colorWithCalibratedRed:arc4random_uniform(100) / 100.0
green:arc4random_uniform(100) / 100.0
blue:arc4random_uniform(100) / 100.0
alpha:1.0] set];
NSRectFill(dirtyRect);
NSDictionary *att = nil;
NSMutableParagraphStyle *style =
[[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[style setLineBreakMode:NSLineBreakByWordWrapping];
[style setAlignment:NSLeftTextAlignment];
att = [[NSDictionary alloc] initWithObjectsAndKeys:
style, NSParagraphStyleAttributeName,
[NSColor whiteColor],
NSForegroundColorAttributeName, nil];
int width = [self.title sizeWithAttributes:att].width;
int height = [self.title sizeWithAttributes:att].height;
int x = (dirtyRect.size.width - width) / 2;
int y = (dirtyRect.size.height - height) / 2;
NSRect centeredText = NSRectFromCGRect(CGRectMake(x, y, width, height));
[self.title drawInRect:centeredText withAttributes:att];
}
#end

How to fade BOTH status bar and navigation bar LIKE Photos.app, on iOS 7

Basically, it's a very simple demand, but I've tried several methods and none of them works as expected. The closest functioning snippet is:
#import "ViewController.h"
#implementation ViewController
- (void)dealloc
{
[scrollView release];
scrollView = nil;
[super dealloc];
}
- (id)init
{
if (self = [super init])
{
self.title = #"Pictures";
scrollView = [[UIScrollView alloc] init];
scrollView.delegate = self;
scrollView.frame = CGRectMake(0.0f, 0.0f, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height);
scrollView.contentSize = CGSizeMake([UIScreen mainScreen].bounds.size.width * 10, scrollView.bounds.size.height);
scrollView.showsVerticalScrollIndicator = NO;
scrollView.showsHorizontalScrollIndicator = NO;
scrollView.pagingEnabled = YES;
scrollView.userInteractionEnabled = YES;
scrollView.backgroundColor = [UIColor blackColor];
self.wantsFullScreenLayout = YES;
self.automaticallyAdjustsScrollViewInsets = NO;
isHidden = NO;
}
return self;
}
- (void)viewDidLoad
{
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tap:)];
[scrollView addGestureRecognizer:tapGesture];
[tapGesture setNumberOfTapsRequired:1];
[tapGesture release];
for (int i = 0; i < 10; i++)
{
UIImage *image = [[UIImage alloc] initWithContentsOfFile:[NSString stringWithFormat:#"/path/to/%d.png", i + 1]];
UIImageView *imageView= [[UIImageView alloc] initWithFrame:CGRectMake([UIScreen mainScreen].bounds.size.width * i, 0.0f, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height)];
imageView.contentMode = UIViewContentModeScaleAspectFit;
imageView.image = image;
[scrollView addSubview:imageView];
[image release];
[imageView release];
}
[self.view addSubview:scrollView];
}
- (void)tap:(UITapGestureRecognizer *)gesture
{
[UINavigationBar setAnimationDuration:1.0];
[UINavigationBar beginAnimations:#"HideTopBars" context:nil];
isHidden = !isHidden;
// [self setNeedsStatusBarAppearanceUpdate];
self.navigationController.navigationBar.alpha = isHidden ? 0.0f : 1.0f;
[UINavigationBar commitAnimations];
}
- (void)scrollViewDidScroll:(UIScrollView *)view
{
// further operation
}
- (BOOL)prefersStatusBarHidden
{
return isHidden;
}
#end
Without "[self setNeedsStatusBarAppearanceUpdate]", navigation bar does fade as expected, but texts on status bar remain visible, which I guess is because status bar takes navigation bar as it's background image and status bar itself doesn't fade; With "[self setNeedsStatusBarAppearanceUpdate]", the texts also fade, but navigation bar's animation becomes sliding in/out from the top of the screen along with fade effect. I've also tried to move "[self setNeedsStatusBarAppearanceUpdate]" into prefersStatusBarHidden, but that just made navigation bar visible forever. I believe this is not an odd demand, so I bet there're better and simpler solutions. Any idea?

UIRefreshControl incorrect title offset during first run and sometimes title missing

The text is offset wrong by the first launch of UIRefreshControl... later sometimes the refresh text doesn't show up at all and just the spiny is visible
I don't think i had this issue with iOS6... might be related to iOS7
Is in a UITableViewController added as a child to a VC, which resides in a modal presented UINavigationController
- (void)viewDidLoad {
[super viewDidLoad];
[self setRefreshControlText:#"Getting registration data"];
[self.refreshControl beginRefreshing];
}
- (void)setRefreshControlText:(NSString *)text {
UIFont * font = [UIFont fontWithName:#"Helvetica-Light" size:10.0];
NSDictionary *attributes = #{NSFontAttributeName:font, NSForegroundColorAttributeName : [UIColor blackColor]};
self.refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:text attributes:attributes];
}
This is definitely an iOS 7 bug, but I haven't figured out exactly what caused it. It appears to have something to do with the view hierarchy — adding my UITableViewController as a child view to a wrapper view controller appeared to fix it for me at first, although the bug is back since iOS 7 GM.
It looks like adding the following code to your UITableViewController after creating the refresh view fixes the positioning issue for good:
dispatch_async(dispatch_get_main_queue(), ^{
[self.refreshControl beginRefreshing];
[self.refreshControl endRefreshing];
});
calling endRefreshing under viewWillAppear did it for me:
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.refreshControl endRefreshing];
}
Under iOS7 with a custom UITableViewController inside a UINavigationController
I had the same problem and for me it worked with layoutIfNeeded after setting the attributedTitle:
- (void)setRefreshControlText:(NSString *)text
{
UIColor *fg = [UIColor colorWithWhite:0.4 alpha:1.0];
NSDictionary *attrsDictionary = #{NSForegroundColorAttributeName: fg};
self.refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:text attributes:attrsDictionary];
[self.refreshControl layoutIfNeeded];
}
Cédric suggested to use [self.refreshControl setNeedsLayout], but this does not force an immediate update of the view, so you must use layoutIfNeeded.
I finally found the holy grail on this, which looks working in all cases
note : UIRefreshControl is added to a UITableViewController (note, never add UIRefreshControl just as subview to a normal UIVIewController's UITableView) (best to add UITableViewController as a child VC inside a UIViewController if you must)
note : that this also fixes the problem, that the UIRefreshControl is not vissible at first refresh (link)
Add to you .h
#interface MyViewController ()
#property (nonatomic, assign) BOOL refreshControlFixApplied;
- (void)beginRefreshing;
- (void)beginRefreshingWithText:(NSString *)text;
- (void)endRefreshing;
- (void)endRefreshingWithText:(NSString *)text;
#end
Add to you .m
////////////////////////////////////////////////////////////////////////
#pragma mark - UIRefreshControl Fix (peter#min60.com) https://stackoverflow.com/questions/19121276/uirefreshcontrol-incorrect-title-offset-during-first-run-and-sometimes-title-mis/
////////////////////////////////////////////////////////////////////////
- (void)beginRefreshingWithText:(NSString *)text {
[self setRefreshControlText:text];
[self beginRefreshing];
}
- (void)endRefreshingWithText:(NSString *)text {
[self setRefreshControlText:text];
[self.refreshControl endRefreshing];
}
- (void)beginRefreshing {
if (self.refreshControl == nil) {
return;
}
if (!self.refreshControlFixApplied) {
dispatch_async(dispatch_get_main_queue(), ^{
if ([self.refreshControl.attributedTitle length] == 0) {
[self setRefreshControlText:#" "];
}
[self.refreshControl beginRefreshing];
dispatch_async(dispatch_get_main_queue(), ^{
[self.refreshControl endRefreshing];
dispatch_async(dispatch_get_main_queue(), ^{
// set the title before calling beginRefreshing
if ([self.refreshControl.attributedTitle length] == 0) {
[self setRefreshControlText:#" "];
}
if (self.tableView.contentOffset.y == 0) {
self.tableView.contentOffset = CGPointMake(0, -self.refreshControl.frame.size.height);
}
[self.refreshControl beginRefreshing];
self.refreshControlFixApplied = YES;
});
});
});
} else {
if (self.tableView.contentOffset.y == 0) {
self.tableView.contentOffset = CGPointMake(0, -self.refreshControl.frame.size.height);
}
[self.refreshControl beginRefreshing];
}
}
- (void)endRefreshing {
if (self.refreshControl == nil) {
return;
}
if (!self.refreshControlFixApplied) {
dispatch_async(dispatch_get_main_queue(), ^{
[self endRefreshing];
});
} else {
if (self.tableView.contentOffset.y < 0) {
self.tableView.contentOffset = CGPointMake(0, 0);
}
[self.refreshControl endRefreshing];
}
}
- (void)setRefreshControlText:(NSString *)text {
UIFont * font = [UIFont fontWithName:#"Helvetica-Light" size:10.0];
NSDictionary *attributes = #{NSFontAttributeName : font, NSForegroundColorAttributeName : [UIColor colorWithHex:0x00B92E]};
self.refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:text attributes:attributes];
}
Use only methods
- (void)beginRefreshing;
- (void)beginRefreshingWithText:(NSString *)text;
- (void)endRefreshing;
- (void)endRefreshingWithText:(NSString *)text;
UIRefreshControl seems to still be broken on IOS9.3 when you change the attributedTitle while the tableView is pulled down. What seems to work is to subclass UIRefreshControl and force update its layout once the (attributed) title is changed.
The core fix is to trigger a change to the tableView contentOffset (causing some hidden magic in the _update method which layouts the spinner and text subviews) and additionally forcing the frame height to its expected value ensuring the background color fills up the pulled down region.
#implementation MEIRefreshControl
{
__weak UITableView* _tableView;
}
- (instancetype)initWithTableView:(UITableView*)tableView
{
self = [super initWithFrame:CGRectZero];
if (self)
{
_tableView = tableView;
}
return self;
}
#synthesize title = _title;
- (void)setTitle:(NSString *)title
{
if (!PWEqualObjects(_title, title))
{
_title = title;
self.attributedTitle = [[NSAttributedString alloc] initWithString:_title ? _title : #""];
[self forceUpdateLayout];
}
}
- (void)forceUpdateLayout
{
CGPoint contentOffset = _tableView.contentOffset;
_tableView.contentOffset = CGPointZero;
_tableView.contentOffset = contentOffset;
CGRect frame = self.frame;
frame.size.height = -contentOffset.y;
self.frame = frame;
}
#end
This is the code that seems to fix all the issues. Many of the others that involved beginning or ending refreshing where interfering with other parts of the control.
//This chunk of code is needed to fix an iOS 7 bug with UIRefreshControls
static BOOL refreshLoadedOnce = NO;
if (!refreshLoadedOnce) {
__weak typeof(self) weakself = self;
[UIView animateWithDuration:0.25 delay:0 options:UIViewAnimationOptionBeginFromCurrentState animations:^(void){
self.tableView.contentOffset = CGPointMake(0, -weakself.refreshControl.frame.size.height);
} completion:^(BOOL finished) {
weakself.refreshControl.attributedTitle = self.refreshControl.attributedTitle;
[weakself.refreshControl setNeedsUpdateConstraints];
[weakself.refreshControl setNeedsLayout];
refreshLoadedOnce = YES;
}];
}
//End of bug fix
I had the same problem, I did solve it by setting attributed text with space string to refresh control directly after init refresh control
_refreshControl = [[UIRefreshControl alloc]init];
[_refreshControl setAttributedTitle:[[NSAttributedString alloc]initWithString:#" "]];
After that, setting new attributed text to refresh control was without any problems.
[[self refreshControl] setAttributedTitle:[[NSAttributedString alloc]initWithString:[NSString stringWithFormat:#"Последнее обновление: %#", [dateFormat stringFromDate:[_post dateUpdated]]]]];
UPDATE
I noticed that problem come back when I use attrsDictionary:
this code works fine
NSAttributedString* attributedString = [[NSAttributedString alloc]initWithString:string];
[[self refreshControl] setAttributedTitle: attributedString];
and this make refreshControl's title appear directly after view loaded
NSAttributedString* attributedString = [[NSAttributedString alloc]initWithString:string attributes:attrsDictionary];
[[self refreshControl] setAttributedTitle: attributedString];
I didn't find solution yet.
UPDATE
Finally found solution, after refreshcontrol init set attributed string also with attributes:attrsDictionary
NSDictionary *attrsDictionary = [NSDictionary dictionaryWithObjects:
[NSArray arrayWithObjects:[UIColor appDarkGray], [UIFont fontWithName:#"OpenSans-CondensedLight" size:14.0f], nil] forKeys:
[NSArray arrayWithObjects:NSForegroundColorAttributeName, NSFontAttributeName, nil]];
[_refreshControl setAttributedTitle:[[NSAttributedString alloc]initWithString:#" " attributes:attrsDictionary]];
so after that there is no problem to set new refreshcontrol's title.
The solution for me was to set a text in viewDidAppear, no need to call
beginRefreshing or endRefreshing on the mainQueue
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"d MMM, HH:mm"];
NSString *lastUpdated = [NSString stringWithFormat:NSLocalizedString(#"refresh_last_updated", nil),[formatter stringFromDate:[NSDate dateWithTimeIntervalSince1970:[[[DatabaseController sharedInstance] getCurrentSettings].lastTimeStamp doubleValue]]]];
UIFont *font = [UIFont fontWithName:FONT_LATO_LIGHT size:12.0f];
NSAttributedString *attrString = [[NSAttributedString alloc] initWithString:lastUpdated attributes:#{NSFontAttributeName:font}];
_refreshControl.attributedTitle = attrString;
}