I have a UIView with two UILabel that I want to reuse in more than one UIViewController. I use storyboard and I assign a custom class alertView:UIView that I declared.
file AlertRemote.h
#interface AlertRemote: UIView
#property (weak, nonatomic) IBOutlet UILabel *label1;
#property (weak, nonatomic) IBOutlet UILabel *label2;
-(void) setTextLabel;
file AlertRemote.m
-(void) setTextLabel{
[ _label1 setText:#"attention..."];
[_label2 setText:#"the program..."];
}
file Controllo.m
//the view present in the storyboard alertView linked to the uiview
#property (strong, nonatomic)IBOutlet AlertRemote *alertView;
#property AlertRemote *alRemView;
[super viewDidLoad];
_alertView=_alRemView; [_alertView setTextLabel];
[_alertView setTextLabel];
if I put some breakpoints inside setTextLabel the code don't works
thanks!!
In order for the custom alert to work, you need to initialise it.
AlertRemote *alRemView;
alRemView = [[AlertRemote alloc]init];
[alRemView setTextLabel];
I think you are not initializing the property alertview. If you are initializing the property alertview then try to set directly with out using alremView.
Related
How to set UILabel text using KVC in iOS ?
Suppose I have following lines of code :
#property (nonatomic, strong) UILabel *nameLabel;
[self setValue:#"someName" forKeyPath:#"nameLabel.text"];
NSLog(#"Using KVC :Output name label - %#",[self valueForKeyPath:#"nameLabel.text"]);
/* Returns nil */
#property (weak, nonatomic) IBOutlet UILabel *nameLabel;
[self setValue:#"Testing123" forKeyPath:#"nameLabel.text"];
See the image below of the storyboard
Seem like I found the fix. UILabel must be on subview, either by dragging and dropping on the storyboard and creating IBOutet or by programatically adding it on the subview.
So, #property (nonatomic, weak) IBOutlet UILabel *nameLabel; did the trick for me.
I currently have a header that displays a name, time, and a couple of buttons. This header should only appear if an appointment is selected in a dashboard, which is irrelevant here. However, once i logout and log back in, with no patient selected, the header view is displayed. I think this is because I did not deallocate the appointment object, and i'm not sure how to do that (i'm new to iOS programming).
Here's my code:
So I have the interface
#interface DashboardVC : CommonVC <UIActionSheetDelegate, HeaderViewDelegate, PracticeServiceDelegate> {
IBOutlet HeaderView *_headerView;
}
And inside the HeaderView object i have these properties:
#property (strong, nonatomic) CCAppointment *appointment;
#property (strong, nonatomic) IBOutlet UIButton *backButton;
#property (strong, nonatomic) IBOutlet UIView *currentPatientView;
#property (strong, nonatomic) IBOutlet UIImageView *avatarImageView;
#property (strong, nonatomic) IBOutlet UILabel *patientNameLabel;
I then, in dashboard VC, want to deallocate, but i'm not sure how... this is what i have:
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
How do I deallocate the properties so that the headerVIew does not show up?
if you want to destroy _headerView try:
[_headerView removeFromSuperview];
_headerView = nil;
So in the storyboard i have a UIViewController class called FormViewController. I set the ViewController in the storyboard to use that:
I then have the three text fields in the header file:
#import <UIKit/UIKit.h>
#interface FormViewController : UIViewController
#property (strong, retain) IBOutlet UITextView *firstName;
#property (strong, retain) IBOutlet UITextView *lastName;
#property (strong, retain) IBOutlet UITextView *email;
- (IBAction) save:(id)sender;
- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender;
#end
However, when i try to connect the ones in the storyboard to the view controller, it doesnt pop up.
Any ideas?
UITextField and UITextView are two very different classes—you have created UITextField instances but your outlets are typed as UITextView.
Just change your outlet types to UITextField and all should be well!
(UITextView, for the record, is a scrolling, often editable field, more like a word processor.)
I would like to modify the text property of a UILabel (nameLbl) but don't know what i am wrong.
I have 2 Views, the first is a ViewController, the second is ProfileViewController. The ProfileViewController fill some field of user profile this data are passed to ViewController and showed in UIlabel.
The issue is I can't show the datas in the ViewController.
What am I get wrong?
---ViewController.h---
#interface ViewController : UIViewController
{
IBOutlet ViewController *profile;
IBOutlet UILabel *nameLbl, *celLbl, *cfLbl;
IBOutlet UITextField *nameTF;
}
#property (nonatomic, retain) IBOutlet ViewController *profile;
#property (retain, nonatomic) IBOutlet UILabel *nameLbl, *celLbl, *cfLbl;
#property (nonatomic, retain) IBOutlet UITextField *nameTF;
-(void) setUser: (NSString *) name:(NSString *) cel:(NSString *) cf;
#end
---ViewController.m---
#synthesize nameLbl, celLbl, cfLbl;
-(void) setUser:(NSString *)name:(NSString *)cel:(NSString *)cf
{
nameLbl = [[UILabel alloc] init];
[nameLbl setText:name];
}
this is the connection inspector
https://drive.google.com/file/d/0Bz7WcQmZNuFLMWt3QUo1Tk5XUW8/edit?usp=sharing
Remove
nameLbl = [[UILabel alloc] init];
from your code it seems that the nameLbl UILabel has already been initialized from nib, and you are creating a new memory reference, so its not working.
I have a view controller alertForNeedsClassification as a property in another class, as such:
#interface SCAAppDelegate()
{
HomeScreenViewController * _homeScreenViewController;
NSInteger SCAStatus;
}
#property (strong, nonatomic) PromptClassifyViewController * alertForNeedsClassification;
#end
#implementation SCAAppDelegate
#synthesize alertForNeedsClassification;
#synthesize window = _window;
PromptClassifyViewController's interface looks like this:
#interface PromptClassifyViewController : UIViewController
#property (weak, nonatomic) IBOutlet UILabel *headerTitle;
#property (weak, nonatomic) IBOutlet UITextView *message;
#property (weak, nonatomic) IBOutlet UIButton *notNowButton;
#property (weak, nonatomic) IBOutlet UIButton *classifyButton;
#property (weak, nonatomic) IBOutlet UIImageView *backgroundImageView;
#property (weak, nonatomic) IBOutlet UIView *alertView;
#property NSUInteger tag;
#property (weak, nonatomic) IBOutlet id<PromptClassifyViewControllerDelegate> delegate;
- (void)show;
- (void)showFromView:(UIView *)view;
- (IBAction)show:(id)sender;
- (IBAction)dismiss:(id)sender;
- (IBAction)buttonWasPressed:(id)sender;
- (void)setHeaderTitleWithText:(NSString *)text;
#end
I am trying to change the values of IBOutlets message and headerTitle text, like this:
alertForNeedsClassification = [[PromptClassifyViewController alloc] initWithNibName:#"PromptClassifyViewController" bundle:nil];
//[alertForNeedsClassification setDelegate:self];
self.alertForNeedsClassification.headerTitle.text = #"A title";
alertForNeedsClassification.message.text = #"A message";
Then I show alertForNeedsClassification calling a show method (it's like a custom uialertview, but it doesn't subclass from uialertview).
Thing is, no matter how I change it, the text on alertForNeedsClassification.view is always that which is defined in the nib, ie. I can't change it programmatically.
My custom alert view is based on Jeff LaMarche's design: http://iphonedevelopment.blogspot.com/2010/05/custom-alert-views.html
Any ideas what might be going on?
Please be careful when you allocate and initialize the UIView object, especially if you trying to mix using Nib and dynamically generating objects. The best place is within -(void)awakeFromNib or -(void)viewDidLoad
Also, make sure these methods are called. By using -(id)initWithNibName:bundle: only cannot make sure your view to be loaded. Try -(void)addChildViewController and -(void)addSubview: on parentViewController's view to make sure view is loaded after being initialized.
If the text had to be prepared before being loaded, assign it to separate NSString property within PromptClassifyViewController class. Since this property is independent from view being loaded, you can change it's value BEFORE view is appeared. Make sure this text is used and applied to the headerTitle within -(void)show method.
Since you allocate PromptClassifyViewController and access weak referenced headerTitle from self. alertForNeedsClassification, make sure it's not deallocated right afterward.
Usually, weak option is not used for IBOutlet properties. Though it is used when generating outlet connection code by dragging objects from Interface Builder. Try testing your code using strong.
I was assigning values to the IBOutlets before they were alloc'd/initialized. The solution I implemented was to set the values I needed to non-IBOutlet properties (NSStrings in this case) and assign those where needed, in Prompt...Controller's viewDidLoad;