I have an app where the viewcontroller is switched if a button is pressed. I switch like this:
NewViewController *nv = [[NewViewController alloc] init];
[nv NewButtonTapped:self];
[self.view addSubview:nv.view];
Then in my NewViewController.m:
- (void)NewButtonTapped:(id)sender
{
backgroundImage = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 1024, 748)];
backgroundImage.image = [UIImage imageNamed:#"cubePage.png"];
[self.view addSubview:backgroundImage];
button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(964, 100, 60, 150);
button.enabled = YES;
button.userInteractionEnabled = YES;
[button setTitle:#"D" forState:UIControlStateNormal];
button.backgroundColor = [UIColor blueColor];
[button addTarget:self action:#selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
}
- (void)buttonTapped:(id)sender
{
NSLog(#"Tapped");
}
All images and buttons are loaded and appears fine in the new viewcontroller but the button action buttonTapped: doesn't respond when I'm tapping the button. This code works fine in the first viewcontroller.What's the problem?
Related
This is my UIDatePicker code but in that picker, done and cancle button is not working ...please help me.... i also add here my done and cancle button methods here..Please give me a proper suggessions for how it works properly.
if (textField.tag==Jobdatetxt.tag)
{
[Jobdatetxt resignFirstResponder];
[data.toolbar removeFromSuperview];
UITextField *lagFreeField = [[UITextField alloc] init];
[self.view.window addSubview:lagFreeField];
[lagFreeField becomeFirstResponder];
[lagFreeField resignFirstResponder];
[lagFreeField removeFromSuperview];
//////////////////////////////////////////////// DATE OF JOB////////////////////////////////////////////////
pickerDate = [[UIDatePicker alloc] initWithFrame:CGRectMake(0,result.height - 216, result.width, 216)];
[pickerDate setDatePickerMode:UIDatePickerModeDate];
pickerDate.backgroundColor = [UIColor whiteColor];
[self.view.window addSubview:pickerDate];
toolbar = [[UIToolbar alloc] init];
toolbar.barStyle = UIBarStyleBlackOpaque;
toolbar.frame=CGRectMake(0,result.height - 266,result.width,50);
cancel = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[cancel setTitle:#"Cancel" forState:UIControlStateNormal];
cancel.backgroundColor = [UIColor clearColor];
[cancel.titleLabel setFont:[UIFont boldSystemFontOfSize:18]];
cancel.titleLabel.textColor = [UIColor whiteColor];
[cancel addTarget:self action:#selector(CancelClicked:) forControlEvents:UIControlEventTouchUpInside];
cancel.tag = textField.tag;
cancel.frame = CGRectMake(10, 10, 70, 30);
[toolbar addSubview:cancel];
doneButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[doneButton setTitle:#"Done" forState:UIControlStateNormal];
doneButton.backgroundColor = [UIColor clearColor];
[doneButton.titleLabel setFont:[UIFont boldSystemFontOfSize:18]];
doneButton.titleLabel.textColor = [UIColor whiteColor];
[doneButton addTarget:self action:#selector(DoneClicked:) forControlEvents:UIControlEventTouchUpInside];
doneButton.tag = textField.tag;
doneButton.frame = CGRectMake(result.width - 80, 10, 70, 30);
[toolbar addSubview:doneButton];
[self.view.window addSubview:toolbar];
}
// Done Button method
-(IBAction)DoneClicked:(UIButton *)sender
{
[pickerDate removeFromSuperview];
[toolbar removeFromSuperview];
}
//Cancle Button Method
-(IBAction)CancelClicked:(UIButton *)sender
{
[pickerDate removeFromSuperview];
[toolbar removeFromSuperview];
}
I'm currently trying to add a button to my app. If the user push on it, it should display an alert.
I want to add the button to a section header of a tableview. Here is my code in tableView:viewForHeaderInSection:
UIImageView *headerView = [[[UIImageView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 20)] autorelease];
...
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:CGRectMake(180, 4, 15, 15)];
UIImage *img=[UIImage imageNamed:#"myimg"];
[button setImage:img forState:UIControlStateNormal];
[button addTarget:self action:#selector(showMyAlert) forControlEvents:UIControlEventTouchUpInside];
[headerView addSubview:button];
return headerView;
And in the same class, I have the method :
-(void)showMyAlert{
NSLog(#"HERE SHOW ALERT");
...
}
The button is correctly displayed but the showMyAlert method is never called when I push on it.
Does anyone have an idea of what is wrong with my code ?
Thanks if you could help me :)
Change your UIImageView as UIView and return it as the header view.
UIView *headerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 20)] autorelease];
Make sure img is not nil. If that is nil, your button will have no image and you will see nothing.
Modified below lines of code, Try like this:-
[button addTarget:self action:#selector(showMyAlert:) forControlEvents:UIControlEventTouchUpInside];
-(IBAction)showMyAlert:(id)sender{
NSLog(#"HERE SHOW ALERT");
...
}
Try this, in viewDidLoad,
-(void)viewDidLoad
{
UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(XXX, YYY, XXX, YYY)];
UIImageView *imageView = [[[UIImageView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 20)] autorelease];
[headerView addSubview:imageView];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:CGRectMake(180, 4, 15, 15)];
UIImage *img=[UIImage imageNamed:#"myimg"];
[button setImage:img forState:UIControlStateNormal];
[button addTarget:self action:#selector(showMyAlert) forControlEvents:UIControlEventTouchUpInside];
[headerView addSubview:button];
self.tableView.tableHeaderView = headerView;
}
I downloaded from a free icon DB a thumb up icon, its size is too large for a button and it had white background.I decided to open it in pixelmator resized the icon and removed the background. when opening it with preview it looks great but when its set to be the button's image in xcode it appears as a white circle.
here is the icon after edit (30x30 png)
and this is how it looks on the button
what should I do to fix this?
edit/ upadte:
I tried #yunas code and it works in the navigation bar not for the toolbar (didn't even show the button).
Trying this code:
UIImage* image = [UIImage imageNamed:#"imageName"];
UIBarButtonItem *likeBtn = [[UIBarButtonItem alloc] initWithImage:image style:UIBarButtonItemStylePlain target:self action:#selector(action_clicked:)];
NSArray* toolbarItems = [NSArray arrayWithObjects:likeBtn,nil];
self.toolbarItems = toolbarItems;
self.navigationController.toolbarHidden = NO;
resulted again in a button with the white drawing
So I was wondering: Is it even possible to have colored buttons in the toolbar? maybe i'm trying the imposible...
edit/ upadte II - the solution: wrapping a UIButton inside a UIBarButtonItem
#interface StatusUIBarButtonItem : UIBarButtonItem
- (id) initWithStatus: (enum StatusEnum)p_statusEnum;
#end
#implementation StatusUIBarButtonItem
- (instancetype)initWithStatus:(enum StatusEnum)p_statusEnum
{
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:[self getStatusImage] forState:UIControlStateNormal];
[button addTarget:self action:#selector(status_Clicked:) forControlEvents:UIControlEventTouchUpInside];
[button setFrame:CGRectMake(0, 0, 20, 20)];
self = [super initWithCustomView:button];
if (self)
{
self.statusButton = button;
}
return self;
}
#end
then in the ViewController class:
-(void) viewDidLoad
{
StatusUIBarButtonItem* stausBtn = [[StatusUIBarButtonItem alloc] initWithStatus:self.status];
NSArray* toolbarItems = [NSArray arrayWithObjects: stausBtn, nil];
self.toolbarItems = toolbarItems;
self.navigationController.toolbarHidden = NO;
}
I hope this will help others that like me want colored images in the toolbar
UIImage *buttonImage = [UIImage imageNamed:#"imageName.png"];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:buttonImage forState:UIControlStateNormal];
button.adjustsImageWhenDisabled = NO;
button.frame = CGRectMake(0, 0, buttonImage.size.width, buttonImage.size.height);
[button addTarget:self action:#selector(action:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
self.navigationItem.rightBarButtonItem = customBarItem;
First: Sorry for my bad English!
I have a class in which I create UIButton. The UIButton I add a UIView. In the ViewController I would like to add these custom tabbar. This works well so far. However, there are problems with addTarget: action: forControlEvents: - How can I run from the ViewController an instance method in the class? The class is of type NSObject. My code:
TabBar *tabBar = [[TabBar alloc] init];
[tabBar tabBarButton];
[tabBar.home addTarget:tabBar action:#selector(switchView) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:tabBar.tabView];
And here is my Class:
#implementation TabBar
#synthesize tabView, home, list, charts, favorits, more;
-(void)tabBarButton{
tabView = [[UIView alloc] initWithFrame:CGRectMake(0, 360, 320,56)];
home = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 43, 56)];
list = [[UIButton alloc] initWithFrame:CGRectMake(63, 0, 40, 56)];
charts = [[UIButton alloc] initWithFrame:CGRectMake(123, 0, 49, 56)];
favorits = [[UIButton alloc] initWithFrame:CGRectMake(192, 0, 66, 56)];
more = [[UIButton alloc] initWithFrame:CGRectMake(278, 0, 42, 56)];
[home setImage:[UIImage imageNamed:#"home.png"] forState:UIControlStateNormal];
[list setImage:[UIImage imageNamed:#"liste.png"] forState:UIControlStateNormal];
[charts setImage:[UIImage imageNamed:#"charts.png"] forState:UIControlStateNormal];
[favorits setImage:[UIImage imageNamed:#"favorites.png"] forState:UIControlStateNormal];
[more setImage:[UIImage imageNamed:#"more.png"] forState:UIControlStateNormal];
home.tag = 1;
list.tag = 2;
charts.tag = 3;
favorits.tag = 4;
more.tag = 5;
[tabView addSubview:home];
[tabView addSubview:list];
[tabView addSubview:charts];
[tabView addSubview:favorits];
[tabView addSubview:more];
}
-(void)switchView{
NSLog(#"hi");
}
When I start the app, it crashes immediately when I press one button.
If you're getting an unrecognized selector error, you might try:
[tabBar.home addTarget:tabBar action:#selector(switchView:) forControlEvents:UIControlEventTouchUpInside];
Note the colon behind action:#selector(switchView:)
How to create a UIButton With two actions.
I know by using UILongPressGestureRecognizer we can perform Longpress.
But my requirement is,When I Long Press UIButton,it has to perform one action and when touch
up inside it, it has to perform another action.
Thanks.
Below is my code.
UIImage *redImage = [UIImage imageNamed:#"TabFav2.png"];
tabRedbutton = [UIButton buttonWithType:UIButtonTypeCustom];
[tabRedbutton setImage:redImage forState:UIControlStateNormal];
tabRedbutton.frame = CGRectMake(0.0, 0.0, 50,35);
redTAb = [[UIBarButtonItem alloc] initWithCustomView:tabRedbutton];
[tabRedbutton addTarget:self action:#selector(redbottonmethod) forControlEvents:UIControlEventTouchUpInside];
longpressGesture1 = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(longPressHandler:)];
longpressGesture1.minimumPressDuration =0.1;
[longpressGesture1 setDelegate:self];
longpressGesture1.cancelsTouchesInView = NO;
[tabRedbutton addGestureRecognizer:longpressGesture1];
[longpressGesture1 release];
- (void)longPressHandler:(UILongPressGestureRecognizer *)gestureRecognizer {
if (longpressGesture.state == UIGestureRecognizerStateBegan)
{
NSlog(#"Long press");
}
}
-(void)redbottonmethod
{
NSlog(#"single tapped");
}
For the tap you can use UIButton's "addTarget:..." method and for the longpress you can add a gesture recognizer:
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(100.0, 100.0, 100.0, 20.0);
[btn setTitle:#"Test" forState:UIControlStateNormal];
[btn addTarget:self action:#selector(userTapped:) forControlEvents:UIControlEventTouchUpInside];
UILongPressGestureRecognizer *gr = [[UILongPressGestureRecognizer alloc] init];
[gr addTarget:self action:#selector(userLongPressed:)];
[btn addGestureRecognizer:gr];
[gr release];
[self.view addSubview:btn];
Of course you need to implement the 2 methods that will be called:
- (void)userTapped:(id)sender {
NSLog(#"user tapped");
}
- (void)userLongPressed:(id)sender {
NSLog(#"user long pressed");
}
Hope that helps.
=========
EDIT: It seems that you are using your button as a BarButtonItem inside a UIToolbar. So I changed my code to do the same:
- (void)viewDidLoad {
[super viewDidLoad];
// set up the button
UIImage *redImage = [UIImage imageNamed:#"TabFav2.png"];
UIButton *tabRedbutton = [UIButton buttonWithType:UIButtonTypeCustom];
tabRedbutton.backgroundColor = [UIColor redColor];
[tabRedbutton setImage:redImage forState:UIControlStateNormal];
tabRedbutton.frame = CGRectMake(0.0, 0.0, 50,35);
// set up a bar button item with the button as its view
UIBarButtonItem *redTab = [[UIBarButtonItem alloc] initWithCustomView:tabRedbutton];
// set up toolbar and add the button as a bar button item
UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0.0, 100.0, 768.0, 40.0)];
toolbar.barStyle = UIBarStyleBlack;
NSArray *items = [NSArray arrayWithObject:redTab];
[toolbar setItems:items];
[self.view addSubview:toolbar];
[toolbar release];
// add tap handler to button for tap
[tabRedbutton addTarget:self action:#selector(redbottonmethod) forControlEvents:UIControlEventTouchUpInside];
// add gesture recognizer to button for longpress
UILongPressGestureRecognizer *longpressGesture1 = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(longPressHandler:)];
longpressGesture1.minimumPressDuration =0.1;
[tabRedbutton addGestureRecognizer:longpressGesture1];
[longpressGesture1 release];
}
And the two methods that get called:
- (void)longPressHandler:(UILongPressGestureRecognizer *)gestureRecognizer {
NSLog(#"Long press");
}
-(void)redbottonmethod {
NSLog(#"single tapped");
}
This code definitely works.
By the way: I noticed that in your code in the 2 methods that get called you have typo: You must use NSLog() and not NSlog(). Could that be the problem?