I am trying to create a back button on my iPhone app and I would like to go back to my landing view .. I am using this code but it did not work
UIButton *back = [UIButton buttonWithType:UIButtonTypeCustom];
[back setFrame:CGRectMake(0, 0, 24, 24)];
[back setImage:[UIImage imageNamed:#"back.png"] forState:UIControlStateNormal];
[back addTarget:self action:#selector(goback) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *btnBack = [[UIBarButtonItem alloc] initWithCustomView:back];
self.navigationItem.hidesBackButton= YES;
navEng.leftBarButtonItem = btnBack;
-(void)goback{ [self.navigationController popToRootViewControllerAnimated:YES]; }
try this .... just changed last line code
UIButton *back = [UIButton buttonWithType:UIButtonTypeCustom]; [back setFrame:CGRectMake(0, 0, 24, 24)]; [back setImage:[UIImage imageNamed:#"back.png"] forState:UIControlStateNormal];
[back addTarget:self action:#selector(goback) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *btnBack = [[UIBarButtonItem alloc] initWithCustomView:back];
self.navigationItem.hidesBackButton= YES;
self.navigationItem.leftBarButtonItem = btnBack;
-(void)goback
{
[self.navigationController popToRootViewControllerAnimated:YES];
}
navEng is declared as IBoutlet UINavigationItem in header file and the back button appears and the action handled correctly but the navigation to the previous ViewController did not worked
#property (nonatomic, strong) IBOutlet UINavigationItem *navEng;
UIButton *back = [UIButton buttonWithType:UIButtonTypeCustom];
[back setFrame:CGRectMake(0, 0, 24, 24)];
[back setImage:[UIImage imageNamed:#"back.png"] forState:UIControlStateNormal];
[back addTarget:self action:#selector(goback) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *btnBack = [[UIBarButtonItem alloc] initWithCustomView:back];
self.navigationItem.hidesBackButton= YES;
navEng.leftBarButtonItem = btnBack;
-(void)goback{
NSLog(#"back");
[self.navigationController popViewControllerAnimated:YES];
}
Related
On a view controller, I have a back button with custom image via this code
UIButton *backButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 32, 32)];
[backButton setImage:[UIImage imageNamed:#"left207.png"] forState:UIControlStateNormal];
[backButton addTarget:self action:#selector(goToParent) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *backBtn = [[UIBarButtonItem alloc] initWithCustomView:backButton];
self.navigationItem.leftBarButtonItem = backBtn;
self.navigationItem.rightBarButtonItem = rightButton;
But when I run the app, there is no pushed sort of effect. It doesn't turn dark for a second.
You need to set another image for highlighted state:
[backButton setImage:[UIImage imageNamed:#"highlightedButton"] forState:UIControlStateHighlighted];
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 create UIView and then I add UIButton as subview with action, but this action is never called.
Does anybody know why?
Here is my code:
- (void)viewDidLoad{
UIView *roundResultView = [[UIView alloc] initWithFrame:CGRectMake(10, 10, 200, 150)];
UIImageView *_popUpBg = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"NotificationBg.png"]];
_popUpBg.frame = CGRectMake(0, 0, roundViewWidth, roundViewHeight);
UIButton *closeButton = [[UIButton alloc]initWithFrame:CGRectMake(30, 30, 100, 30)];
[closeButton addTarget:self action:#selector(closeAndBack) forControlEvents:UIControlEventTouchUpInside];
[closeButton setTitle:#"Back") forState:UIControlStateNormal];
[roundResultView addSubview:_popUpBg];
[roundResultView addSubview:closeButton];
[self.view addSubview:roundResultView];
}
-(void)closeAndBack{
NSLog(#"closeAndBack"); //never called
}
I have checked this:
NSLog(#"%#", [closeButton allControlEvents]);
NSLog(#"%#", [closeButton allTargets]);
and it prints:
... Sedmica[2192:14f03] 64
... Sedmica[2192:14f03] {(
<ViewController: 0x8631e10>
)}
Update your code with this and kindly let me know :
UIButton *closeButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[closeButton addTarget:self
action:#selector(closeAndBack:)
forControlEvents:UIControlEventTouchDown];
[closeButton setTitle:#"Back"
forState:UIControlStateNormal];
closeButton.frame = CGRectMake(30.0, 30.0, 100.0, 30.0);
[self.view addSubview:closeButton];
- (IBAction)closeAndBack:(UIButton *)button{
NSLog(#"Button clicked.");
}
If I change it to be a subview of timerView it works fine but nothing else works.
timerView = [[UIView alloc] initWithFrame:CGRectMake(0, 278, 105, 33)];
[self.view addSubview:timerView];
UIImageView *changerBackground = [[UIImageView alloc] init];
[changerBackground setImage:[UIImage imageNamed:#"speedbackground.png"]];
changerBackground.frame = CGRectMake(-12 , -16, 105, 33);
[timerView addSubview:changerBackground];
UIButton *normal = [UIButton buttonWithType:UIButtonTypeCustom];
normal.frame = CGRectMake(40, 8, 22, 22);
[normal setBackgroundImage:[UIImage imageNamed:#"normalwhite.png"] forState:UIControlStateNormal];
[normal setBackgroundImage:[UIImage imageNamed:#"normalred.png"] forState:UIControlStateHighlighted];
[normal addTarget:self action:#selector(quickTest:) forControlEvents:UIControlEventTouchUpInside];
[changerBackground addSubview:normal];
[changerBackground setUserInteractionEnabled:YES];
will solve your issue. As the UIImageView disables the user interaction by default.
is there any way to change the button image inside UIToolbar?
I am actually using this way but it doesn't work.
[myButton setImage:[UIImage imageNamed:#"blue.png"]];
For your information, "myButton" is an IBOulet UIBarButtonItem.
#property (nonatomic, strong) IBOutlet UIBarButtonItem *myButton;
Use the following cole. i hope it will use to you.
UIImage *image = [UIImage imageNamed:#"buttonImage.png"];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.bounds = CGRectMake( 0, 0, image.size.width, image.size.height );
[button setImage:image forState:UIControlStateNormal];
[button addTarget:myTarget action:#selector(myAction) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *barButtonItem = [[UIBarButtonItem alloc] initWithCustomView:button];
Thanks,.
// add images to bar button item of toolbar in iphone
to set button type as custum:
button=[UIButton buttonWithType: UIButtonTypeCustom];
[button setImage:[UIImage imageNamed:#"myImage.png"] forState:UIControlStateNormal];
[button addTarget:self action:#selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
[button setFrame:CGRectMake(0, 0, 40, 40)];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:button];
// add the image on toolbar:
[toolbar insertSubview:[[[UIImageView alloc]
initWithImage:[UIImage imageNamed:#"image.png"]] autorelease] atIndex:1];