I know there are some questions about how to show a toolbar above keyboard.
I read some of them. But, I could not make the toolbar which have TextView like message app. I want to make a toolbar which is showed when button tapped.
I also use IB to create a toolbar because I need some adjustment to appearance.
The code now I make is below.
#interface ViewController ()
#property (weak, nonatomic) IBOutlet UIToolbar *ibToolbar;
// this text view is subview of ibToolbar
#property (weak, nonatomic) IBOutlet UITextView *barTextView;
#end
- (void)viewDidLoad {
[super viewDidLoad];
[self.ibToolbar removeFromSuperview];
self.barTextView.inputAccessoryView = self.ibToolbar;
}
- (IBAction)buttonPushed:(id)sender {
[self.barTextView becomeFirstResponder];
}
When I tap the button, I want to look at toolbar above keyboard to put text on textView.
But, nothing happened when I push the button.
I think that why this code does not work, also because the viewController's view does not parent view of the toolbar,so [self.barTextView becomeFirstResponder] can not be effective.
I think that something else which I did is needed to work the things.
If anyone know do the things work, please tell me.
I'm currently creating a "slide-show" of pictures that the user can scroll through. Following a guide, I made it so that the UIScrollView I am using shows the edges of the previous and next pictures as the user scrolls along. This comes with a side-effect of the user not being able to scroll if he touches on one of the edges of the pictures, because these edges are technically not within the border of the UIScrollView itself. In order to compensate for this, I am going to create a UIView in which I will embed the UIScrollView. The UIVew will be extend the entire width of the page so that the user can scroll when touching the edges of the pictures. To do this, I need to connect the UIScrollView to the code of the UIView through an IBOutlet. Usually this is simply accomplished by Ctrl-clicking on the UIScrollView and dragging to the code. However, this does not seem to work for me and I am stumped as to why.
Here is a screenshot of the environment I am dealing with when I try to ctrl-click on the UIScrollView and drag to the code to create an IBOutlet (it simply doesn't give the option to create anything).
Here is a screenshot of what running the simulator produces. If i try to click and drag where my mouse currently is, it doesn't scroll, which is the problem I am trying to correct.
It is because you should link your storyboard view to UIView class. You can choose your ScrollViewController class in custom class settings. I added the sample jpg
what you are looking for is not that 'easy' by just connecting the two.
There are two options:
1) In the future you should use a UICollectionView and implement the paging behaviour yourself, that is the cleanest code I think.
NEVER MIND THE SECOND OPTION - I DIDN'T SEE YOU ACTUALLY ALREADY USED THIS
2) To directly answer your question:
You have to subclass the UIView that contains the UIScrollView like this:
header:
#import <UIKit/UIKit.h>
#interface SCTouchForwardView : UIView
#property (nonatomic, weak) IBOutlet UIView* receiver;
#property (nonatomic, assign) BOOL force;
#end
Implementation:
#import "SCTouchForwardView.h"
#implementation SCTouchForwardView
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
UIView* result = [super hitTest:point withEvent:event];
if (![result isKindOfClass:[SCTouchForwardView class]]) {
return result;
}
if (result==self) {
UIView *result = [self.receiver hitTest:[self convertPoint:point toView:self.receiver] withEvent:event];
if (result) {
return result;
}else{
if (self.force) {
return self.receiver;
}
return nil;
}
}
return nil;
}
#end
When you want to use this, you just have to Right-Click-Drag from the container to the UIScrollview and select 'receiver' and what you tried to do will work!
Could anyone please help me. When I zoom an image button changes its position. Do not know how to heal it.. I assume that might be because they are under "ScrollView" but when I add buttons to "View" they don't respond, they only respond in "ScrollView".
*.h
#interface ViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate, UIScrollViewDelegate> {
UIImageView *imageView;
UIButton *addImageBtn;
}
#property (nonatomic, retain) IBOutlet UIButton *addImageBtn;
*.m
#synthesize addImageBtn;
Thanks in advance!
Do you really need the buttons inside the scroll? Is autolayout on ? Attach the buttons to the bottom of the container view and put it outside the scroll
I am having a problem with my UITableView in iOS7. Initially, the data loads in just fine, and I get output in my console that proves that the cells are speaking to the data source correctly, but as soon as I tap anywhere on the table, the cells disappear and the table goes blank. The height of the cells in the empty UITableView seem to be honoring the height my custom prototype cell (410px), but all the data in the cells vanish, and the empty table view acts like it only has one cell in it (like its default state before it gets hooked up to the delegate).
I am using Storyboards for this app.
To get a little context, this app is similar to the iphone Instagram app, and I am using this application as way to learn iOS 7 development. I have been banging my head up against a wall trying to solve this issue, and I can't find any online resources that can help me solve this, so I wanted to ask all the smart peeps on Stack Overflow.
I have prepared a graphic that helps you see the problem
higher resolution version here
Here is my TableViewController code:
#interface PA_PhotoTableViewController ()
#property (nonatomic, copy) NSArray *photos;
#end
#implementation PA_PhotoTableViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.photos = [[PA_PhotoStore sharedPhotoStore] allPhotos];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [[[PA_PhotoStore sharedPhotoStore] allPhotos] count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
PA_PhotoCell *cell = [tableView dequeueReusableCellWithIdentifier:#"PhotoCell" forIndexPath:indexPath];
PA_Photo *photo = (self.photos)[indexPath.row];
cell.photoTitle.text = photo.title;
cell.photoOwnerName.text = [NSString stringWithFormat:#"%#", photo.owner];
cell.photoLikes.text = #"99";
// Photo Image URL
NSURL *photoImageURL = [NSURL URLWithString:photo.image_full_url];
[cell.photoImage sd_setImageWithURL:photoImageURL placeholderImage:[UIImage imageNamed:#"lightGraySpinningLoader.gif"]];
// Photo Owner Image
[cell.photoOwnerImage sd_setImageWithURL:photoImageURL placeholderImage:[UIImage imageNamed:#"lightGraySpinningLoader.gif"]];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
// This code never gets called when I try to tap on a cell
NSLog(#"A row was selected");
}
- (void)dealloc {
NSLog(#"dealloc called in PA_PhotoTableViewController");
}
and here is the custom cell code PA_PhotoCell (consolidated .h & .m files):
#interface PA_PhotoCell : UITableViewCell
#property (nonatomic, weak) IBOutlet UIImageView *photoImage;
#property (nonatomic, weak) IBOutlet UILabel *photoTitle;
#property (nonatomic, weak) IBOutlet UILabel *photoOwnerName;
#property (nonatomic, weak) IBOutlet UIImageView *photoOwnerImage;
#property (nonatomic, weak) IBOutlet UILabel *photoLikes;
#property (nonatomic, weak) IBOutlet UILabel *photoTimestamp;
#property (nonatomic, weak) IBOutlet UILabel *photoComments;
#end
#implementation PA_PhotoCell
- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated];
NSLog(#"in set selected");
}
-(void)setHighlighted:(BOOL)highlighted {
NSLog(#"in set highlighted");
}
You can see a few NSLog() calls to help me see if anything is getting called.
Where am I going wrong? The end goal is to click on one of the TableViewCell instances and launch a UINavigationController, I know how to do that, but I can't move on to that step until I figure out why my UITableView won't scroll, and why it disappears when I click on it!
EDIT: After much testing, debugging and experimentation, I have been able to conclude that the problem is actually not with the UITableView at all, and it is, in fact, a problem with how the UITableView is being loaded into its parent view. I still haven't found a solution to my problem, but I am getting closer to finding the cause. Here is what I have discovered:
First, when any of the UIButtons at the bottom of the screen are tapped (see photo reference), it loads the relevant instance of UIViewController into a UIView called placeholderView. When I run my problematic UITableView OUTSIDE of this UIView (where the UITableViewController is acting on its own, not embedded within another UIView) then the table works perfectly, it scrolls, it revives click events, and so on. So as soon as I load the UITableView into the UIView, the UITableView becomes unresponsive (it doesn't scroll or receive tap events) and any attempt to interact with it, the UITableView goes completely blank. My debugging session concludes that the NSArray *photos never gets reset to nil, or manipulated in anyway, the table just goes blank.
So does anyone have any ideas on what would cause a UITableView to do this when being loaded into a generic UIView? All the other views that get loaded into this generic UIView are responsive, and behave as expected. Its just this UITableView that is giving me problems.
If you review the graphic I attached to this post (above), you will see that I am using what appears to be a UITabBarView, but it is, in fact, just a generic view with UIButtons inside. The reason I decided to craft my own "UITabBarView look-alike" instead of using the ready-made UITAbBarView class was because I wanted to give custom functionality to the "menu" button on the bottom left (I want a nice UIView to slide in from the left, and stop about 60 pixels from the right of the screen when the "menu" button is tapped, and I can't figure out how to customize the behavior of the UITabBarView, so I opted for this approach.
Here is the code that is actually loading the UITableViewController into the subview (via a CustomStoryboardSegway):
// PA_HomeViewCustomStoryboardSegue.m
#import "PA_HomeViewCustomStoryboardSegue.h"
#import "PA_HomeViewController.h"
#implementation PA_HomeViewCustomStoryboardSegue
// to create a custom segue, you have to override the perform method
-(void)perform {
// get the source and destination view controllers
PA_HomeViewController *segueSourceController = (PA_HomeViewController *)[self sourceViewController];
UIViewController *destinationController = (UIViewController *)[self destinationViewController];
for (UIView *view in segueSourceController.placeholderView.subviews){
[view removeFromSuperview];
}
segueSourceController.currentViewController = destinationController;
[segueSourceController.placeholderView addSubview:destinationController.view];
}
#end
and here is the header file for my PA_HomeViewController (the view the contains the "placeholderView" which is the target view that loads the various UIViewControllers after the user has tapped the UIButtons at the bottom of the view (similar to a TabBarView) :
#interface PA_HomeViewController : UIViewController
#property (weak, nonatomic) IBOutlet UIView *placeholderView;
#property (weak, nonatomic) UIViewController *currentViewController;
#end
I am hoping that I am just missing something obvious in the way that I am loading the UITableView into the placeholderView, and something in there is causing the UITableView to go completely blank.
When you display the UITableView in a different view, you must always make sure that the view controller which "hosts" the UITableView has a strong reference to its controller. In your case, the data source for the UITableView seems to be deallocated after adding the UITableView as subview.
Changing the currentViewController property from weak to strong should fix your problem.
In swift you need to declare viewcontroller object globally that would result in Strong, in case if you declare locally it results in keep disappearing the cells.
e.g.
var refineViewController : RefineViewController?
then you can access that controller using below code that would not result in disappearing cells.
func showRefineView(isFindHomeTab isFindHomeTab : Bool){
refineViewController = RefineViewController(nibName: String(BaseGroupedTableVC),bundle : nil)
refineViewController!.refineSearchDelegate = self
refineViewController!.view.frame = CGRectMake(0, -490, self.view.frame.size.width, self.view.frame.size.height)
UIView.animateWithDuration(0.3, delay: 0.0, options: .CurveEaseOut, animations:
{
self.refineViewController!.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)
self.refineViewController!.isFindHomeTab = isFindHomeTab
}, completion: nil)
self.view.addSubview(refineViewController!.view)
}
I experienced the exact same problem. The issue was that I was using a custom datasource class (called tableVCDataSource), and was setting the tableView's dataSource incorrectly in the ViewController class. I was doing:
override func viewDidLoad() {
mainTableView.dataSource = TableVCDataSource()
}
when I should have been doing:
fileprivate var tableVCDataSource: TableVCDataSource?
override func viewDidLoad() {
tableVCDataSource = TableVCDataSource()
mainTableView.dataSource = tableVCDataSource
}
This solved my issue.
So I have this little project in which the user goes from one view to another as they click buttons, and the text on the last button they've clicked should show up in a label in the top of the screen. I figured out how to have the variables accessible from anywhere in the app, and also how to change it as the user presses the buttons. Yet, I can only make the label's text change once a button is hit, and I wanted it to happen automatically (the view to appear with the label already containing the correct text).
For that I set the label in two different ways (which I found online):
#interface ViewMateria : UIViewController
{
IBOutlet UILabel *materiaLabel;
}
#end
and
#interface ViewMateria : UIViewController
#property (weak, nonatomic) IBOutput UILabel *materiaLabel;
#end
Still, for both of this I can not access the label by a simple materiaLabel.text or anything like that, and can't find a way to do it without the need for the press of a button.
I've been looking for an answer for this for a while now, and nothing that I found seemed to be of use for me (since most of the links I found taught how to change a label text with the press of a button).
This is my first project with Objective-C and Xcode, and I don't really know the answer, so maybe I am missing something quite obvious, but still, if anyone could point me in the right direction, that would be of much help.
Put this in your .h file for the view controller:
#property (weak, nonatomic) IBOutput UILabel *materiaLabel;
When you are about to present the view controller, access it like this:
your_ViewMateria_object.materiaLabel.text = #"";
Then present it..
Are you using segues?
If yes, its another story..
UPDATE:
For segues use this, with the .h property value I just mentioned:
-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
ViewMateria *vm = [segue destinationViewController];
vm.materiaLabel.text = #"Whatever";
}
You should be good to go now ;D
Did it work?
UPDATE
In second view controller .h file
#property (strong, nonatomic) NSString *buttonName;
.m file
self.materiaLabel.text = self.buttonName;
In first view controller .m file
inside IBAction
secondviewcontrollerObject.buttonName = [(UIButton *)sender currentTitle];