I have a button in my main interface. I did a ctl + drag from the button in the storyboard to the InterfaceController.m I then put an NSLog in the resulting method. This is what the code looks like
#import "InterfaceController.h"
#interface InterfaceController()
#end
#implementation InterfaceController
- (void)awakeWithContext:(id)context {
[super awakeWithContext:context];
NSLog(#"awakeWithContext!");
// Configure interface objects here.
}
- (IBAction)Alarm {
NSLog(#"Alarm!");
}
- (void)willActivate {
// This method is called when watch view controller is about to be visible to user
[super willActivate];
NSLog(#"willActivate!");
}
- (void)didDeactivate {
// This method is called when watch view controller is no longer visible
[super didDeactivate];
NSLog(#"didDeactivate!");
}
#end
I also took a screenshot with the logs appearing. No log occurs when a I press the Alarm button in the emulator.
UPDATE
I just followed the example in this video.
"How to connect a WKInterfaceButton to an action in the code using Xcode" https://www.youtube.com/watch?v=CuCuL-a608w
I added this to the header - (IBAction)alarmPressed:(id)sender;
I put this in the view controller
- (IBAction)alarmPressed:(id)sender
{
NSLog(#"alarmPressed!");
}
I dragged the sent action select to the Interface Controller and selected alarmPressed. This still does not produce logs when pressed. Also traits includes "User Interaction Enabled"
Unfortunately the watchKit doesn't support the :(id)sender argument. so your IBAction should just read
-(IBAction)alarmPressed{
NSLog(#"alarmPressed!"):
}
also make sure that this dot is filled in. if it isn't that means you need to click on the hollow dot and drag it to your button.
Related
I stumbled across a lovely ui concept. I am wondering how could we create a "pop up" window like this in iOS(iPhone).
I have 3 questions:
How do we achieve that pop up style window?
What is the best approach to do that?
Thank you
EDIT: I would like to create a custom control like this.
It seems that the better way is to:
1- Create a class that inherits UIView and has a delegate class too.
your .h file should be something like this:
#import <UIKit/UIKit.h>
#class MYPopUpView;
//Your delegate class
#protocol PopUpViewDelegate <NSObject>
- (void) popUpView:(MYPopUpView *)popUpView clickedButtonAtIndex:(NSInteger) index;
#end
//Your view interface
#interface LIPopUpView : UIView{
NSObject<LIPopUpViewDelegate> *_delegate;
}
//Your methods and properties
#end
2- In the initializer of your .m file implement the UI of your PopUpView
3- For the circle you can use UILayer or even a custom button and when user clicks it fire your delegate methods.
4- Define a show methods with following code for showing the popUp:
- (void) show
{
UIWindow *window = [UIApplication sharedApplication].windows.lastObject;
[window addSubview:self];
[window bringSubviewToFront:self];
}
5- Fire the show method of you popUp object to show the popUp
6- For hiding it, define the close methods like below and fire it from the caller class.
- (void) close
{
[self removeFromSuperview];
}
Sounds to me the following will do:
Create a view controller whose view has sub-views look like the register window in the screenshot. For the non-rectangle shape, mask of the view layer may needs to be properly set.
Add the view of the view controller to the key window.
I have recently added a Widget to my application, or have tried to. When I run it the widget shows in the notification center but it appears collapsed. I have confirmed the viewDidLoad is not being called by using NSLog. Any ideas why its not loading? Thanks.
Edit: it seems the problem is the label won't be added I had to create everything in the interface builder.
.h file
#import <UIKit/UIKit.h>
#import <NotificationCenter/NotificationCenter.h>
#interface TodayViewController : UIViewController {
UILabel *lblCurrentLocation;
}
#define SCREEN ([[UIScreen mainScreen] bounds])
#end
.m file
#import "TodayViewController.h"
#interface TodayViewController () <NCWidgetProviding>
#end
#implementation TodayViewController
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
lblCurrentLocation = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 50)];
lblCurrentLocation.text = #"Current Location: Unknown";
[self.view addSubview:lblCurrentLocation];
NSLog(#"Set up");
}
- (void)widgetPerformUpdateWithCompletionHandler:(void (^) (NCUpdateResult))completionHandler {
// Perform any setup necessary in order to update the view.
// If an error is encountered, use NCUpdateResultFailed
// If there's no update required, use NCUpdateResultNoData
// If there's an update, use NCUpdateResultNewData
completionHandler(NCUpdateResultNewData);
}
#end
Happens to me too (a lot). As far as I know there are a lots of troubleshooting while debugging the widget.
Try the following steps :
Stop the widget from running.
Remove the widget from Today view in notification center, by tapping on "Edit" button on the bottom of notification center.
Close the notification center.
Run the widget again.
Please check class name TodayViewController assign to your main interface builder.
In case of Today extension, it is normal that viewDidLoad is not getting called everytime. But, viewWillAppear and viewDidAppear get called everytime. For loading new data, you should put the code in this method:
func widgetPerformUpdate(completionHandler: ((NCUpdateResult) -> Void))
Commonly, in case of today extension, we use above method in place of viewDidLoad for getting and setting data. This method is going to be called whenever new data required.(It commonly called everytime, but if you are switching NotificationCenter frequently, this one only going to called first time). So, depending on your need use required method.
For further details, you can refer: https://developer.apple.com/library/archive/documentation/General/Conceptual/ExtensibilityPG/Today.html
I have a UITableView that i would like to hide until the user taps the button searchButtonTapped. (I'm also using this button as an IBAction.)
Originally i'm hiding the table view as you see in the viewDidLoad, and i wanna show it after the button was tapped, but it does not shown up after i tap the search button. Do i missed something? For me, it seems it should be work properly, after the button was tapped i refresh the table view.
my .h file
#property (weak, nonatomic) IBOutlet UIButton *searchButtonTapped;
- (IBAction)searchButton:(id)sender;
.m file
- (void)viewDidLoad
{
[super viewDidLoad];
self.tableView.hidden = YES;
}
- (void)buttonTapped:(id)sender {
if (sender == self.searchButtonTapped) {
self.tableView.hidden = NO;
[self.tableView reloadData];
}
}
- (IBAction)searchButton:(id)sender {
[self searchSetup];
}
It's impossible to tell from the little bit of code that you posted. Add NSLog statements in your buttonTapped method that show entering the method, entering the if statement, the value of searchButtonTapped, and the value of self.tableView.
Then you can tell if the method is getting called, if the if statement is evaluating as true, and if the table view is non-nil. One of those things is likely to be the cause of your problem.
I'm guessing that the if statement is wrong. what type is the property self.searchButtonTapped? Post the code that declares that property.
Based on the name I would guess that searchButtonTapped is a boolean?
you have declared only one IBAction, which is for the method searchButton.
This method call the searchSetup´s method. What is the purpose of it?
- (IBAction)searchButton:(id)sender {
[self searchSetup];
}
So you must have another IBAction for buttonTapped method witch is currently a "void" method and not a IBAction. Or you make that connection from the storyBoard, or you must declare it programaticly like:
[self.searchButtonTapped addTarget:self action:#selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside]
I'm using the TapJoy SDK for a game application on iOS. The SDK has a way to display a view on top of the application: http://knowledge.tapjoy.com/integration-8-x/ios/pb/featured-app
I can give the function a UIVIewController argument, so I can manage the show/hide by myself.
I have created the following UIViewVontroller:
#interface MyViewController : UIViewController
- (void) viewDidLoad;
- (void) viewDidUnload;
- (void) viewWillLoad;
- (void) viewWillUnload;
- (void)viewWillAppear:(BOOL)animated;
- (void)viewDidAppear:(BOOL)animated;
- (void)viewWillDisappear:(BOOL)animated;
- (void)viewDidDisappear:(BOOL)animated;
#end
#implementation MyViewController
- (void) viewDidLoad
{
self.view = GRAPHIC_SYSTEM::GetGlView();
NSLog(#"viewDidLoad");
}
- (void) viewDidUnload
{
NSLog(#"viewDidUnload");
}
- (void) viewWillLoad
{
NSLog(#"viewWillLoad");
}
- (void) viewWillUnload
{
NSLog(#"viewWillUnload");
}
- (void)viewWillAppear: (bool)animated
{
NSLog(#"viewWillAppear");
}
- (void)viewDidAppear:(BOOL)animated
{
NSLog(#"viewDidAppear");
}
- (void)viewWillDisappear:(BOOL)animated
{
NSLog(#"viewWillDisappear");
}
- (void)viewDidDisappear:(BOOL)animated
{
NSLog(#"viewDidDisappear");
}
#end
When I'm notified by TapJoy that a feature app is available, I show it using my view controller:
[TapjoyConnect showFeaturedAppFullScreenAdWithViewController: [[MyViewController alloc] init]];
The TapJoy view is successfully displayed on top of my game.
There are 2 problems:
Only the viewDidLoad log is printed in the console. None of the other log messages are printed
I would like to know when the user has closed the TapJoy view, so I can add some processing at that time, but none of the other functions of the view controller are called.
I've seen here on SO that some users recommend to use the Notifications. Unfortunately, as I don't have access to the source code of the TapJoy SDK, I need to find another way.
Do you have any ideas?
Thanks in advance
Mike
Well I could fix the issue by creating a custom UIView, which I set as the UIViewController view.
Next, I have then overriden the willRemoveSubview function of this custom view.
And with the viewDidLoad function of the UIViewController, I know when the view is displayed, AND when the TapJoy view is removed, so I can remove my custom view too.
I've just started with xcode and objective-c and did some very basic apps, but what i'm having problem with is very basic this. the keyboard return button not hiding the keyboard.
I've searched the internet for the solution and all they say is to connect delegate to the file's owner and add the function and it should work, i did that and nothing is working.
I have an ok button and it is working and also clicking on any free space on the screen is working, just the return button....
I am using the simulator, not testing on iphone yet. (xcode 3.2.5 64 bit with the 4.2 simulator).
This is the line of code that should connect the delegate to every textFiled.
1. i've tried already to return both YES and NO, didn't work.
2. i've tried both a specific object name for the textField and this general way, didn't work.
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
return NO;
}
In the: basic view controller connection -> connections -> outlets, i have the: delegate -- File's Owner. and in the file's owner in referencing outlets there is: delegate - Round style text.....
EDIT - i forgot to mention before, i've check and the method isn't being called!!!
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
NSLog(#"Working!!!");
[textField resignFirstResponder];
return YES;
}
what should i do to make it happen? that is why people say to connect the delegate, but in my case it is connected and not triggering the function...i know it is kind of dumb question but for a nobie like me the solution is not obvious...
OK, another Edit - with all my code: just can't understand what to do....
This is: basicViewController.h:
#import <UIKit/UIKit.h>
#interface basicViewController : <#superclass#> <UITextFieldDelegate>
#interface basicViewController : UIViewController <UITextFieldDelegate> {
//every object that we want to interact with (like text field or lable) is call an outlet!!!!
//here we define the outlets for our program
IBOutlet UITextField *txtName;
IBOutlet UILabel *lblMessage;
}
//here are the getters and setter for our outlets
#property (nonatomic, retain) IBOutlet UITextField *txtName;
#property (nonatomic, retain) IBOutlet UILabel *lblMessage;
//method decleration for the OK button action
- (IBAction) doSomething;
//method for hiding the keyboard when clicking on empty area in the app
//we will put an invisible button on all area and clicking on it will make keyboard disapear
- (IBAction) makeKeyboardGoAway;
#end
This is basicViewController.m:
#import "basicViewController.h"
#implementation basicViewController
//synthesizeing the objects that we made' this will create the getter and setters automaticly
#synthesize txtName;
#synthesize lblMessage;
- (IBAction) doSomething{
// makeing keyboard disapear when pressing ok button (doing that form the text field)
//when pressing the OK button, the keyboard will disapear and when clicking in the text field it will show again
[txtName resignFirstResponder];
NSString *msg = [[NSString alloc] initWithFormat:#"Hello, %#",txtName.text];
//the objective-c way for setting the test in the text field
[lblMessage setText:msg];
//the regular object oriented way
//lblMessage.text = msg;
[msg release];
}
- (IBAction) makeKeyboardGoAway{
[txtName resignFirstResponder];
}
//when clicking the return button in the keybaord
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
NSLog(#"Working!!!");
[textField resignFirstResponder];
return YES;
}
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}
#end
Maybe now i am more clear, sorry i didn't do it before.
Any one has an idea what am i doing wrong? it should be pretty strait forward.....
EDIT - Adding an image of all the elements, i hope that will help to help me :-)
10x a lot for every one that is trying to help....i really like this framework, it is so great after c++ and java, python and many other...and i am working with a book, but it is for ios 3.1, maybe that is the problem.....
Firstly you should check if textFieldShouldReturn: is actually being called by adding an NSLog statement or breakpoint at the beginning of the method.
Once that's out of the way, try an manually declare that your view controller conforms to <UITextFieldDelegate> protocol in your interface file:
#interface YourClass : ... <UITextFieldDelegate>
Also declare a property & outlet for your UITextField, make the appropriate connections in IB and manually declare self as the UITextField delegate with:
self.yourUITextFieldObject.delegate = self;
Once that's done see if your method above is now being called and make sure you return YES.
Just write one line in the
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
}
before return YES;
the final version will be as given below:
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
[textField resignFirstResponder];
return YES;
}
-(void)textFieldDidEndEditing:(UITextField *)textField{
NSLog(#"%#",textField.text);
}
You need to assign the delegate of the textfields to your file owner. The textfields are sending the message, but doesn't have a delegate to respond to it.
Use the interface builder to do that.
You have to implement this method..
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
Like Rog said, don't forget to register the textfield to the delegate, you can do this manually as he said but in Storyboard you can just control drag from all of your textfields to the view controller and register the delegate (choose delegate). Only the textfields that are registered can make use of all those methods.
So this line is important:
self.yourUITextFieldObject.delegate = self;
Or even more easy these days is to just use the storyboard:
textfield is in a subview? in this case, make sure textfield have as delegate the FileOwner.
put a log at the
- (IBAction) makeKeyboardGoAway
function. I think its this method everytime anything is tapped on the screen. In that case, you will need to send the touch event to the text field. Not sure how this is done but that should do it.
Else try removing the which takes care of tap(click) all over the view and try to do what you are doing.
Most likely the problem is that your actual view controller in the running application is not a "basicViewController" but a UIViewController that does not implement the UITextFieldDelegate-protocol.
What you've done in the interface builder by selecting your class "basicViewController" as the FilesOwner is just declaring the FilesOwner-object in your running application to be of type basicViewController; the actual object is not instantiated by this declaration and in your case it is not in the xib / nib.
Some other part of your code actually instantiates a view controller object and loads the xib / nib file. At that place, I guess your code is instantiating a UIViewController (typically by auto-generated code) and not an instance of your basicViewController; you simply have to change the class there.
Furthermore, this error often happens when using a UINavigationController or UITabBarController in the Interface Builder that is (should be) configured to instantiate and load other custom views. If you use such a higher-level controller, double-check that it is actually configured to use your basicViewController, not UIViewController when loading your view from the xib / nib.
Hope, that solves the issue!
Can you try this..
#interface ClassName : SuperClass < UITextFieldDelegate >
Use like this...
textfield.delegate=self;
and use the UITextFieldDelegate in .h class
You can always dismiss the keyboard when you don’t even know which view the text field is in by using:
Objective-C:
[[UIApplication sharedApplication] sendAction:#selector(resignFirstResponder)
to:nil
from:nil
forEvent:nil];
Swift:
UIApplication.sharedApplication().sendAction("resignFirstResponder",
to:nil,
from:nil,
forEvent:nil)