My app looks like this when you launch it:
On every row except for the top one, I can push a new view controller, and dismiss it, and everything stays the same. However, if I click the Instagram row, and then dismiss the view that is pushed onto it, my screen looks like this:
In the Instagram controller that is pushed, the viewDidLoad looks like this:
- (void)viewDidLoad {
[super viewDidLoad];
self.title = #"Instagram";
UIBarButtonItem *theButton = [[UIBarButtonItem alloc] initWithTitle:#"Post" style:UIBarButtonItemStylePlain target:self action:#selector(doit)];
self.navigationItem.rightBarButtonItem = theButton;
self.downloading = YES;
self.mediaArray = [NSMutableArray arrayWithCapacity:0];
[self.collectionView registerClass:[SBInstagramCell class] forCellWithReuseIdentifier:#"SBInstagramCell"];
[self.collectionView setBackgroundColor:[UIColor whiteColor]];
[self.collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:#"footer"];
[self.navigationController.navigationBar setTranslucent:NO];
[self.view setBackgroundColor:[UIColor whiteColor]];
self.multipleLastEntities = [NSArray array];
self.instagramController = [SBInstagramController instagramControllerWithMainViewController:self];
self.instagramController.isSearchByTag = self.isSearchByTag;
self.instagramController.searchTag = self.searchTag;
[self downloadNext];
self.collectionView.alwaysBounceVertical = YES;
refreshControl_ = [[SBInstagramRefreshControl alloc] initInScrollView:self.collectionView];
[refreshControl_ addTarget:self action:#selector(refreshCollection:) forControlEvents:UIControlEventValueChanged];
loaded_ = YES;
[self showSwitch];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:nil];
}
I get to this view like this:
SBInstagramController *instagram = [SBInstagramController instagram];
instagram.showOnePicturePerRow = YES; //to change way to show the feed, one picture per row(default = NO)
instagram.showSwitchModeView = YES; //show a segment controller with view option
[instagram refreshCollection]; //refresh instagram feed
[self.navigationController pushViewController:instagram.feed animated:YES];
To me, it looks like the UIImageView is being shifted down about 44 pixels, which would be the space of a Navigation Bar, I just can't understand why it would be doing that. I use AutoLayout and have both the UITableView and the UIImageView pinned to the top superview, but it is only the UIImageView that moves.
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I have a uisegementcontrol and a uibarbutton that gets added to the navigation bar of the navigation controller. When I push to the next view, however, I want them to be removed. I tried several approaches, but nothing seems to be removing them. One approach was using viewWillDisappear and having the segementcontrol and the bar button removedFromSuperView. Another was to call the removeFromSuperView from the method that pushes to the next scene. Nothing seems to be working. I've actually been stuck on this for a really long time!
Also, the view controller "X" that has the segement control and the bar button is presented through a presentViewController. X then pushes the other view controller.
Here is the code for the segement control
NSArray *headers = #[#"Tracks", #"Playlists"];
self.savedMusic = [[UISegmentedControl alloc] initWithItems:headers];
CGSize size = self.view.frame.size;
CGRect segFrame = CGRectMake(80, 5, size.width - 140, 35);
self.savedMusic.backgroundColor = [UIColor blackColor];
self.savedMusic.frame = segFrame;
self.savedMusic.tag =1;
[self.savedMusic setTitle:#"Tracks"
forSegmentAtIndex:0];
[self.savedMusic setTitle:#"Playlists"
forSegmentAtIndex:1];
[self.savedMusic addTarget:self
action:#selector(whatToDisplay)
forControlEvents:UIControlEventValueChanged];
self.savedMusic.selectedSegmentIndex = 0;
[self.navigationController.navigationBar addSubview:self.savedMusic];
Here is the code for the viewWillDisapear
[super viewWillDisappear:animated];
self.navigationController.navigationBar.barStyle = UIBarStyleDefault;
self.navigationItem.leftBarButtonItem = nil;
[self.savedMusic removeFromSuperview];
And here is the code for the method that switches to the new view
PlaylistTracksTableViewController *vc = [[PlaylistTracksTableViewController alloc] init];
[self.savedMusic removeFromSuperview];
[[self.navigationController.navigationBar viewWithTag:1] removeFromSuperview];
self.navigationItem.leftBarButtonItem = nil;
[self.navigationController pushViewController:vc animated:YES];
The problem is that what you are doing is not how you manipulate the contents of the navigation bar. Do not talk to self.navigationController.navigationBar. Instead, each view controller should set its own self.navigationItem, and the runtime will use that to populate the navigation bar for that view controller.
I have custom UIBarButton items added to UINavigationBar as rightbarbuttonitems. I add two more items in UIBarButton when device goes to landscape mode. I am getting rotation call and I am correctly removing items from UIBarbuttons array based on device orientation, but my navigationbar item set never gets updates.
If i start with portrait mode, it shows what it suppose to. When I rotate to landscape new items are not added to navigation bar and vice versa extra item won't go when device go to portrait.
I am not sure how I can change navigationbaritems on device rotation. Per me I am doing all things correct.
-(void)setUpOnRotation:(BOOL)toPortrait{
_searchMessage = [[UILabel alloc] initWithFrame:CGRectMake(3.0, 0, 110, 20)];
_searchMessage.numberOfLines = 2;
_searchMessage.textColor = [UIColor blackColor];
_searchMessage.font = [UIFont systemFontOfSize:8.0];
_searchMessage.text = #"";
_searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 15, 130, 25)];
_searchBar.delegate = self;
_searchBar.showsCancelButton = NO;
UIBarButtonItem* doneButton = [BarButtons doneButtonWithTarget:self action:#selector(cancel)];
UIBarButtonItem *searchActivityItem = [[UIBarButtonItem alloc] initWithCustomView:_searchMessage];
UIBarButtonItem *searchItem = [[UIBarButtonItem alloc] initWithCustomView:_searchBar];
UIBarButtonItem *in = [BarButtons nativeButtonNamed:#"In"
title:#"In"
target:self
action:#selector(In)];
UIBarButtonItem *out = [BarButtons nativeButtonNamed:#"Out"
title:#"Out"
target:self
action:#selector(Out)];
NSMutableArray *itemsSet;
itemsSet = [NSMutableArray arrayWithObjects:in,
out,
searchItem,
searchActivityItem,
doneButton, nil];
if (toPortrait) {
if ([itemsSet containsObject:searchItem] || [itemsSet containsObject:searchActivityItem]) {
[itemsSet removeObject:searchActivityItem];
[itemsSet removeObject:searchItem];
}
}
[_searchBar release];
[searchItem release];
[_searchActivity release];
[_searchMessage release];
[searchActivityView release];
self.navigationItem.rightBarButtonItems = itemsSet;
}
- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
[self setUpOnRotation:UIInterfaceOrientationIsPortrait(toInterfaceOrientation)];
} -(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:NO animated:animated];
[self setUpOnRotation:UIInterfaceOrientationIsPortrait(self.interfaceOrientation)];}
Note: setUpOnRotaion method is called from willAnimateRotationToInterfaceOrientation and viewWillAppear with UIInterfaceOrientationIsPortrait(self.intefaceOrientation) and it does give me correct result. I have debugged.
In willAnimateRotationToInterfaceOrientation change cehck for orientation
if([uidevice orientaiton]statusbarorientation]){
self.naviogationite.rightbarbuttonitems = #[btn1,btn2,btn3];
}
else{
self.naviogationite.rightbarbuttonitems = #[abtn1,abtn2,abnt3];
}
u can do like this
can u do like this
NSMutableArray *itemsSet;
if(!toPortrait){
itemsSet = [NSMutableArray arrayWithObjects:in,
out,
searchItem,
searchActivityItem,
doneButton, nil];
}
if (toPortrait) {
itemsSet = [NSMutableArray arrayWithObjects:in,
out,
doneButton, nil];
}
I have a segmented controll with two cells defined programmatically. When I go into my app both cells perform the same action. The first should open a webpage in Safari, the second opens an image and covers the current view for 5 seconds. Any pointers?
In the .m file
#property UISegmentedControl *segment;
- (void)viewDidLoad
{
UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:#"Publication", #"About", nil]];
self.tableView.tableHeaderView = segment;
[segment addTarget:self action:#selector(segmentPressed:) forControlEvents:UIControlEventValueChanged];
[self.tableView registerClass:[UITableViewCell class]
forCellReuseIdentifier:#"UITableViewCell"];
}
- (void)segmentPressed:(id)sender {
if (_segment.selectedSegmentIndex ==0) {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"******"]];
}else if(_segment.selectedSegmentIndex ==1){
UIImageView *imageView = [[UIImageView alloc] initWithFrame: CGRectMake(0, 0, 320, 480)];
imageView.backgroundColor = [UIColor redColor];
[imageView setImage: [UIImage imageNamed:#"MACSLoad#2x.png"]];
[self.view addSubview: imageView];
sleep(5);
imageView.hidden = YES;
}
}
You get that result because _segment is nil. You never assigned the segmented control you created to your property -- you assigned it to a local variable. So change this line,
UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:#"Publication", #"About", nil]];
to,
self.segment = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:#"Publication", #"About", nil]];
Another way to do it, would be to get rid of the property all together, leave the code in viewDidLoad as it is, and change this,
- (void)segmentPressed:(id)sender {
if (_segment.selectedSegmentIndex ==0) {
to this,
- (void)segmentPressed:(UISegmentedControl *)sender {
if (sender.selectedSegmentIndex ==0) {
Unless you need to access the segmented control outside of its action method, there's no reason to create the property. It's better in any case to use the sender argument rather than a property (even if you have one) inside the action method.
i have asked this question here also but i didn't get any solution.so i am asking here again with the full explanation.
I downloaded EPub Reader library from here. When i run this library,first comes a table view which contain four rows having values EPUB ,PDF etc and after clicking on the "EPUB" row
book appears successfully with the top toolbar. Because i have to load the book first in start instead of showing the toolbar i did some changes with the code. copied some code from didSelectRowAtIndexPath and added that code into delegate.m. so now the problem is book is successfully loading but the toolbar is not showing up
here is my code
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
NSArray *languages = [userDefaults objectForKey:#"AppleLanguages"];
EPubViewController *epubView = [[EPubViewController alloc] init];
[epubView loadEpub:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:#"AtoZbook" ofType:#"epub"]]];
self.navigationController = [[UINavigationController alloc]initWithRootViewController:epubView];
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];
return YES;
}
the code of loading epubView was in RootViewController.m in the original library
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
switch (indexPath.row) {
//TXT
case 0:{
//txt
}
break;
//PDF
case 1:{
//PDF
}
break;
//EPUB
case 2:{
epubView = [[EPubViewController alloc] init];
[epubView loadEpub:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:#"The Chessmen of Mars" ofType:#"epub"]]];
epubView.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentModalViewController:epubView animated:YES];
[epubView release];
}
break;
case 3:{
//another book
}
break;
default:
break;
}
}
here is my view didLoadMethod of EpubViewController
- (void)viewDidLoad {
[super viewDidLoad];
loadingIndicator = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
loadingIndicator.center = CGPointMake(toolbar.frame.size.width/2 ,toolbar.frame.size.height/2);
[loadingIndicator startAnimating];
toolbar.alpha = 0.8;
[self.toolbar addSubview:loadingIndicator];
[webView setDelegate:self];
UIScrollView* sv = nil;
for (UIView* v in webView.subviews) {
if([v isKindOfClass:[UIScrollView class]]){
sv = (UIScrollView*) v;
sv.scrollEnabled = NO;
sv.bounces = NO;
}
}
currentTextSize = 100;
//Webview
UISwipeGestureRecognizer* rightSwipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(gotoNextPage)] ;
[rightSwipeRecognizer setDirection:UISwipeGestureRecognizerDirectionLeft];
UISwipeGestureRecognizer* leftSwipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(gotoPrevPage)] ;
[leftSwipeRecognizer setDirection:UISwipeGestureRecognizerDirectionRight];
[webView addGestureRecognizer:rightSwipeRecognizer];
[webView addGestureRecognizer:leftSwipeRecognizer];
[self performSelector:#selector(stratRolling)];
}
here are the images
i want to say again that the toolbar works fine when i show the epubViewController from the Case 2 i mean by clicking the row if i have to show the table view first.
your tool bar is hiding being navigation bar since navigation bar is always on top you can add your tool bar as sub view of navigation bar i m not sure if it will work though best approch is use navigation bar and add item it it like left button right button and title stuff or you can add a view as subview of navigation bar i have done that before sample code
navBar=self.navigationController.navigationBar;
[navBar addSubview:statusBar];
statusBar.frame=f;
self.navigationController.navigationBar.translucent = YES;
here statusBar was a view was set up like your tool bar same size.
When initiating a view from a UIActionSheet button, upon returning to the view via the navigationBar back button, the toolbar while still visible does not have any of the buttons that were previously on it. This error has arisen since updating to iOS 6 and occurs while testing it on the simulator and a device running iOS 6 only. If I comment out the code that hides the toolbar on the view pushed by the UIActionSheet the buttons are added when going back.
I'm making my toolbar items programatically in viewWillAppear and showing the UIActionSheet from the toolbar which I'm accessing via self.navigationController.toolbar.
Any idea what is causing this problem? It's only happened since iOS 6 has come around so is there any changes that I need to take into account regarding viewWillAppear?
This is how the view is pushed from the actionSheet:
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
if (actionSheet.tag == 2) {
if (buttonIndex == 0) {
[self dismissAllTips];
self.actionNoteAddView= [[self.storyboard instantiateViewControllerWithIdentifier:#"IDActionNoteAddView"] retain];
actionNoteAddView.note_id = 0;
actionNoteAddView.iscompleted=0;
[[NSUserDefaults standardUserDefaults] setBool:NO forKey:#"tool_tips"];
[self.navigationController pushViewController:actionNoteAddView animated:TRUE];
[actionNoteAddView release];
}else if(buttonIndex == 1){
...
These are the view methods for the pushed view:
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
self.navigationItem.hidesBackButton = NO;
[self.navigationController setToolbarHidden:YES];
txtcontent.layer.cornerRadius = 10.0f;
}
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
}
These are the view methods for the view that pushed the view using the actionSheet:
- (void) viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
self.navigationItem.hidesBackButton = YES;
[self.navigationController setToolbarHidden:NO];
self.navigationController.navigationBarHidden=NO;
self.navigationController.navigationBar.barStyle = UIBarStyleBlackOpaque;
self.navigationController.navigationBar.tintColor = [UIColor colorWithRed:0.8 green:0.45 blue:0.2 alpha:1];
self.navigationController.toolbar.barStyle = UIBarStyleBlackOpaque;
self.navigationController.toolbar.tintColor = [UIColor colorWithRed:0.8 green:0.45 blue:0.2 alpha:1];
UIImage *actionButtonImage = [UIImage imageNamed:#"31-circle-plus#2x.png"];
UIBarButtonItem *actionButton = [[UIBarButtonItem alloc] initWithImage:actionButtonImage style:UIBarButtonItemStylePlain target:self action:#selector(actionPressed:)
];
UIImage *dashButtonImage = [UIImage imageNamed:#"19-gear.png"];
UIBarButtonItem *dashButton = [[UIBarButtonItem alloc] initWithImage:dashButtonImage style:UIBarButtonItemStylePlain target:self action:#selector(settingsPressed:)];
UIBarButtonItem *flexItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
target:nil
action:nil];
NSArray *toolitems = [NSArray arrayWithObjects:dashButton, flexItem, actionButton, flexItem, nil];
[self setToolbarItems:toolitems];
self.title = #"Dashboard";
defaultProfile.text = [[NSUserDefaults standardUserDefaults] stringForKey:#"default_profile"];
BOOL dailyProcess = [[NSUserDefaults standardUserDefaults] boolForKey:#"daily_process"];
if(dailyProcess){
[[NSUserDefaults standardUserDefaults] setBool:NO forKey:#"daily_process"];
[[NSUserDefaults standardUserDefaults] synchronize];
loading = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
labelProcess = [[UILabel alloc]initWithFrame:CGRectMake(60, 105, 240, 30)];
labelProcess.text = #"Processing...";
labelProcess.backgroundColor = [UIColor clearColor];
labelProcess.textColor=[UIColor colorWithRed:0.8 green:0.45 blue:0.2 alpha:1];
[labelProcess setFont:[UIFont systemFontOfSize:20]];
loading.opaque = NO;
loading.backgroundColor = [UIColor colorWithWhite:0.0f alpha:0.6f];
indicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
[indicator setHidesWhenStopped:YES];
indicator.center = self.view.center;
[self.view addSubview:loading];
[self.view addSubview:indicator];
[self.view addSubview:labelProcess];
[indicator startAnimating];
}
}
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
CGRect frame = CGRectMake(157, 365, 10, 10);
UIView *viewToPointAt = [[UIView alloc] initWithFrame:frame];
[self.view addSubview:viewToPointAt];
BOOL willies = [[NSUserDefaults standardUserDefaults] boolForKey:#"tool_tips"];
if(willies==YES){
if(popTip == nil) {
popTip = [[[CMPopTipView alloc] initWithMessage:#"Step 1/3: This is the Action Button. You can create, view and auto-fill notes which are then added to your timeline.(Click for step 2)."] autorelease];
popTip.delegate = self;
[popTip presentPointingAtView:viewToPointAt inView:self.view animated:YES];
popTip.backgroundColor = [UIColor colorWithRed:0.8 green:0.45 blue:0.2 alpha:1];
popTip.textColor = [UIColor whiteColor];
}
}
[viewToPointAt release];
}
Tried a lot of different techniques and eventually sorted it by showing it in one view method and hiding it in the next. It's one fo the strangest bugs I have encountered and this is hardly a fix, but I hate having unanswered questions.
You may solve this by hiding the toolbar in the next view, but that is not a very good solution, as other views that can be possibly opened from the view that contains the toolbar will all have to hide the toolbar when needed, this is annoying.
Another solution is to hide the toolbar in viewDidDisappear but there is another problem, let's say another new view needs the toolbar as well, and it sets the toolbar visible in its own viewWillAppear then the problem is that the viewWillAppear for the new view will be called actually before viewDidDisappear of the previous view, so in that case the toolbar disappear even the new view desires it.
Anyway, I'm not sure if this is a bug of iOS6 as it works fine for iOS5, what worked for me was to wrap the code that opens the new view into dispatch_async(dispatch_queue_t queue, dispatch_block_t block), my understanding is that by doing this the action sheet will be dismissed before the new view is shown as you put the code that opens the new view to the end of the main queue(like what we did for viewDidDisappear, but this happens before the call to viewWillAppear of next view so it works perfect).
Got the solution, and I think it is an Apple bug in iOS 6.0 and above.
In the NavigationController view stack if any view hides the toolbar, e.g. self.navigationController.toolbarHidden = YES, then since that point on all the Views that had already created a toolBar with buttons, will loose the buttons.
So, my solution to this problem was to keep the toolBar in all the Views(had to compromise on the UI, but in my app pikSpeak, the functionality was very important.)
This is an ancient thread, I know, but I just recently ran into this problem. The clue to my solution was that some delay was needed between pushing a new view and closing the action sheet. I changed from using clickedButtonAtIndex to didDismissWithButtonIndex so that the push would occur after the action sheet was gone. Problem solved!