I have declared a method at the selector and I created a method with the same name. Yet, the method says it is not recognisable. The error messages:
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
UIImage *btnImage = [UIImage imageNamed:#"ic_favorite_border_48pt.png"];
UIButton *heart = [UIButton buttonWithType:UIButtonTypeCustom];
// get the image size and apply it to the button frame
CGRect listButtonFrame = heart.frame;
listButtonFrame.size = btnImage.size;
heart.frame = listButtonFrame;
[heart setImage:btnImage forState:UIControlStateNormal];
[heart addTarget:self.navigationController.parentViewController
action:#selector(revealToggle:)
forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *jobsButton =
[[UIBarButtonItem alloc] initWithCustomView:heart];
self.navigationItem.rightBarButtonItem = jobsButton;
-(void)revealToggle:(UIButton *)heart
{
}
You have put the revealToggle method inside your viewDidAppear method. You can't do that. Move it outside.
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
UIImage *btnImage = [UIImage imageNamed:#"ic_favorite_border_48pt.png"];
UIButton *heart = [UIButton buttonWithType:UIButtonTypeCustom];
// get the image size and apply it to the button frame
CGRect listButtonFrame = heart.frame;
listButtonFrame.size = btnImage.size;
heart.frame = listButtonFrame;
[heart setImage:btnImage forState:UIControlStateNormal];
[heart addTarget:self
action:#selector(revealToggle:)
forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *jobsButton =
[[UIBarButtonItem alloc] initWithCustomView:heart];
self.navigationItem.rightBarButtonItem = jobsButton;
}
-(void)revealToggle:(UIButton *)heart
{
}
And since revealToggle is inside this same class, you need to pass self as the target.
Related
I have created a custom UIButton and placed it at the right hand side of the navigation controller. But when I tapped on it, it doesn't trigger the buttonTapped method and printout Testing 123, what have I done wrong?
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
UIImage *btnImage = [[UIImage alloc] init];
BOOL unlike = NO;
if (unlike){
btnImage = [UIImage imageNamed:#"ic_favorite_border_48pt.png"];
}else{
btnImage = [UIImage imageNamed:#"ic_favorite_48pt.png"];
}
UIButton *heart = [UIButton buttonWithType:UIButtonTypeCustom];
CGRect listButtonFrame = heart.frame;
listButtonFrame.size = btnImage.size;
heart.frame = listButtonFrame;
[heart setImage:btnImage forState:UIControlStateNormal];
[heart addTarget:self.navigationController.parentViewController
action:#selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *jobsButton = [[UIBarButtonItem alloc] initWithCustomView:heart];
self.navigationItem.rightBarButtonItem = jobsButton;
}
-(void)buttonTapped:(UIButton*)heart{
NSLog(#"Testing 123");
}
#end
[heart addTarget:self.navigationController.parentViewController
action:#selector(buttonTapped:)
forControlEvents:UIControlEventTouchUpInside];
Probably needs to be
[heart addTarget:self
action:#selector(buttonTapped:)
forControlEvents:UIControlEventTouchUpInside];
When I define the button on .h, it works but when I code the button does not work.
- (void)viewDidLoad
{
[super viewDidLoad];
UIImage *buttonImage = [UIImage imageNamed:#"nl.png"];
//create the button and assign the image
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame=CGRectMake(230,302,32,32);
[button setImage:buttonImage forState:UIControlStateNormal];
//create a UIBarButtonItem with the button as a custom view
//UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
[button addTarget:self action:#selector(clickActionItem) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
}
-(void)btnClicked
{
[self.button Sethidden:YES]:
self.button.hidden=YES;
_button.hidden=YES;
}
But not work
Issue
The problem is that you are creating UIButton on viewDidLoad Method and you don't keep the instance stored so you cannot access it. Another issue is that you are giving another method to selector of the button.
Solution
Change your target at selector and add the UIButton as parameter just like the code below
[button addTarget:self action:#selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
And the method btnClicked take the instance of the button which is passed at button
-(void)btnClicked:(UIButton *)button
{
[button sethidden:YES];
}
This should do the trick.
#implementation YourView{
UIButton *button;
}
- (void)viewDidLoad
{
[super viewDidLoad];
UIImage *buttonImage = [UIImage imageNamed:#"nl.png"];
//create the button and assign the image
button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame=CGRectMake(230,302,32,32);
[button setImage:buttonImage forState:UIControlStateNormal];
//create a UIBarButtonItem with the button as a custom view
//UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
[button addTarget:self action:#selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
}
-(void)btnClicked
{
[button setHidden:YES];
}
Your code did not give sufficient information for to see what you intend to do. Can you also provide the header file?
I need to detect selected image of uiimage which is placed inside scrollview.
My code is here:
int newscrollviewY = 40;
for(int i = 0; i<1; i++)
{
scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(5, newscrollviewY, 310, 100)];
scrollView.showsVerticalScrollIndicator = YES;
scrollView.scrollEnabled = YES;
scrollView.userInteractionEnabled = YES;
scrollView.backgroundColor = [UIColor clearColor];
scrollView.delegate=self;
int imgx = 1;
for(int img=0; img<[images count]; img++)
{
UIImageView *imageView1 = [[UIImageView alloc]initWithFrame:CGRectMake(imgx,0,100,100)];
imageView1.backgroundColor = [UIColor whiteColor];
imageView1.image = [images objectAtIndex:img];
imageView1.contentMode = UIViewContentModeScaleAspectFit;
[imageView1 setNeedsDisplay];
[imageView1 setUserInteractionEnabled:YES];
[imageView1 setMultipleTouchEnabled:YES];
[scrollView addSubview:imageView1];
imageButton = [UIButton buttonWithType:UIButtonTypeCustom];
imageButton.frame = CGRectMake(imgx,0,100,100);
[imageButton addTarget:self action:#selector(buttonClicked) forControlEvents:UIControlEventTouchUpInside];
imageButton.tag = img;
[scrollView addSubview:imageButton];
imgx = imgx + 103;
}
Please help to detect selected image using imageButton or something else.
Replace your selector with buttonClicked:
be Sure that you are adding ":" after selector method. follow or replace the code below:
[imageButton addTarget:self action:#selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
then Add the selector definantion in .m file
- (void) buttonClicked: (id) sender
{
// here you can get the tag of button.
NSInteger tag = ((UIButton *)sender).tag;
// do your implementation after this
}
Hope this will solve your issue. Enjoy Coding..!!
They way you have set it up the tag of the 'button' is already the number of the image in your array of images. So all you need to do is get the tag from the 'button'.
Make sure the button clicked function retrieves the tag from the sender(id) that you receive.
For example a bit like this:
- (IBAction)buttonClicked:(id)sender {
UIButton *button = (UIButton *)sender;
UIImage selectedImages = [images objectForKey: [button tag]];
}
As par you question if you are using UIImageview you have to use UITapGestureRecognizer that same like Button. you just need to add UITapGestureRecognizer like:-
for(int img=0; img<[images count]; img++)
{
UIImageView *imageView1 = [[UIImageView alloc]initWithFrame:CGRectMake(imgx,0,100,100)];
imageView1.backgroundColor = [UIColor whiteColor];
UITapGestureRecognizer *frameTapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(frameTapGesture:)];
frameTapGesture.numberOfTapsRequired=1;
imageView1.image = [images objectAtIndex:img];
imageView1.contentMode = UIViewContentModeScaleAspectFit;
[imageView1 setNeedsDisplay];
[imageView1 setUserInteractionEnabled:YES];
[imageView1 setMultipleTouchEnabled:YES];
imageView1.tag=img;
[_imgView addGestureRecognizer:frameTapGesture];
[scrollView addSubview:imageView1];
}.
- (void)frameTapGesture:(UITapGestureRecognizer*)sender
{
UIView *view = sender.view; //cast pointer to the derived class if needed
NSLog(#"%d", view.tag);
}
Reduce your code There are No need to add Button with same Frame of ImageView For getting Click Event or you can also set Image of UIButton for you want to like use UIBUtton then remove UIImageview Code else you simply use UITapGestureRecognizer with getting click event using - (void)frameTapGesture:(UITapGestureRecognizer*)sender
Please try this code
for(int img=0; img<[images count]; img++)
{
imageButton = [UIButton buttonWithType:UIButtonTypeCustom];
[imageButton setImage:[UIImage imageNamed:[images objectAtIndex:i]] forState:UIControlStateNormal];
imageButton.frame = CGRectMake(imgx,0,100,100);
[imageButton addTarget:self action:#selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
imageButton.tag = img;
[scrollView addSubview:imageButton];
imgx = imgx + 103;
}
- (void) buttonClicked: (id) sender
{
UIButton *button = (UIButton *)sender;
UIImage selectedImage = button.currentImage;
}
set button target
[button addTarget:self action:#selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
// get Button Action
-(void) buttonAction:(UIButton *)sender
{
NSLog(#"%dl",sender.tag);
// do your implementation after this
}
I am trying to add custom back button on navigation bar but it is not working below is my code
-(void)addLeftButton
{
UIImage *buttonImage = [UIImage imageNamed:#"btn_back.png"];
UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom];
[aButton setBackgroundImage:buttonImage forState:UIControlStateNormal];
aButton.frame = CGRectMake(0.0, 0.0, buttonImage.size.width, buttonImage.size.height);
UIBarButtonItem *aBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:aButton];
[aButton addTarget:self action:nil forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.backBarButtonItem = aBarButtonItem;
}
Please tell what's wrong with this code
Try this.
-(void)addLeftButton
{
UIImage *buttonImage = [UIImage imageNamed:#"btn_back.png"];
UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom];
[aButton setBackgroundImage:buttonImage forState:UIControlStateNormal];
aButton.frame = CGRectMake(0.0, 0.0, buttonImage.size.width, buttonImage.size.height);
UIBarButtonItem *aBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:aButton];
[aButton addTarget:self action:nil forControlEvents:UIControlEventTouchUpInside];
[self.navigationItem setLeftBarButtonItem:aBarButtonItem];
}
Here is the code that i have used to create custom backbutton
- (void)viewDidLoad
{
[super viewDidLoad];
// Set the custom back button
//add the resizable image
UIImage *buttonImage = [[UIImage imageNamed:#"backbtn.png"]
resizableImageWithCapInsets:UIEdgeInsetsMake(0, 13, 0, 5)];
//create the button and assign the image
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setBackgroundImage:buttonImage forState:UIControlStateNormal];
MSLabel *lbl = [[MSLabel alloc] initWithFrame:CGRectMake(12, 4, 65, 28)];
lbl.text = #"Settings";
lbl.backgroundColor = [UIColor clearColor];
//lbl.font = [UIFont fontWithName:#"Helvetica" size:12.0];
lbl.numberOfLines = 0;
lbl.lineHeight = 12;
lbl.verticalAlignment = MSLabelVerticalAlignmentMiddle;
lbl.font = [UIFont fontWithName:#"Helvetica" size:12];
[button addSubview:lbl];
//set the frame of the button to the size of the image (see note below)
button.frame = CGRectMake(0, 0, 70, buttonImage.size.height);
[button addTarget:self action:#selector(back) forControlEvents:UIControlEventTouchUpInside];
//create a UIBarButtonItem with the button as a custom view
UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
self.navigationItem.leftBarButtonItem = customBarItem;
}
-(void)back {
// Tell the controller to go back
[self.navigationController popViewControllerAnimated:YES];
}
This code will resize your image so it can fit the text.
You can also put this button in any method.
You didn't add action to your button. So you need to add action to your button. For more info see in the below code..
-(void)addLeftButton
{
UIImage *buttonImage = [UIImage imageNamed:#"btn_back.png"];
UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom];
[aButton setBackgroundImage:buttonImage forState:UIControlStateNormal];
aButton.frame = CGRectMake(0.0, 0.0, buttonImage.size.width, buttonImage.size.height);
UIBarButtonItem *aBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:aButton];
[aButton addTarget:self action:#selector(backBtnPressed) forControlEvents:UIControlEventTouchUpInside]; // -------- Edit here -----
self.navigationItem.backBarButtonItem = aBarButtonItem;
}
-(void)backBtnPressed
{
[self.navigationController popViewControllerAnimated:YES];
}
I have a single button toggling between play and pause for audio playback. When I was using the standard play/pause buttons (e.g., initWithBarButtonSystemItem:UIBarButtonSystemItemPlay), I got a nice white flash animation effect over the buttons as they toggled back and forth. But now that I am using custom images, I no longer get that effect. How can I get it back?
Also would very much appreciate any tips to simplify this as it seems heavyweight. I saw https://stackoverflow.com/a/9104587/1462372 but am not clear whether that is applicable in this case (in button bar).
Here is the code:
- (void) setAsPlaying:(BOOL)isPlaying
{
self.rootViewController.playing = isPlaying;
// we need to change which of play/pause buttons are showing, if the one to
// reverse current action isn't showing
if ((isPlaying && !self.pauseButton) || (!isPlaying && !self.playButton))
{
UIBarButtonItem *buttonToRemove = nil;
UIBarButtonItem *buttonToAdd = nil;
if (isPlaying)
{
buttonToRemove = self.playButton;
self.playButton = nil;
UIImage *pauseButtonImage = [UIImage imageNamed:#"icon_pause.png"];
UIButton *pauseButton = [UIButton buttonWithType:UIButtonTypeCustom];
[pauseButton addTarget:self action:#selector(pauseAudio:) forControlEvents:UIControlEventTouchUpInside];
pauseButton.bounds = CGRectMake(0, 0, pauseButtonImage.size.width, pauseButtonImage.size.height);
[pauseButton setImage:pauseButtonImage forState:UIControlStateNormal];
self.pauseButton = [[UIBarButtonItem alloc] initWithCustomView:pauseButton];
buttonToAdd = self.pauseButton;
}
else
{
buttonToRemove = self.pauseButton;
self.pauseButton = nil;
// this was the way I was doing it before:
// self.playButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemPlay target:self action:#selector(playAudio:)];
UIImage *playButtonImage = [UIImage imageNamed:#"icon_play.png"];
UIButton *playButton = [UIButton buttonWithType:UIButtonTypeCustom];
[playButton addTarget:self action:#selector(playAudio:) forControlEvents:UIControlEventTouchUpInside];
playButton.bounds = CGRectMake(0, 0, playButtonImage.size.width, playButtonImage.size.height);
[playButton setImage:playButtonImage forState:UIControlStateNormal];
self.playButton = [[UIBarButtonItem alloc] initWithCustomView:playButton];
buttonToAdd = self.playButton;
}
// Get the reference to the current toolbar buttons
NSMutableArray *toolbarButtons = [[self.toolbar items] mutableCopy];
// Remove a button from the toolbar and add the other one
if (buttonToRemove)
[toolbarButtons removeObject:buttonToRemove];
if (![toolbarButtons containsObject:buttonToAdd])
[toolbarButtons insertObject:buttonToAdd atIndex:5];
[self.toolbar setItems:toolbarButtons];
}
}
Try this code might be helpful to you...
UIImage* image = [UIImage imageNamed:#"facebook.png"];
CGRect frame = CGRectMake(0, 0, image.size.width, image.size.height-10);
UIButton *rightbtnItem = [[UIButton alloc] initWithFrame:frame];
[rightbtnItem setBackgroundImage:image forState:UIControlStateNormal];
[rightbtnItem setShowsTouchWhenHighlighted:YES];
Copy and paste it in your viewDidload and see glow effect on touch.
UIButton *button=[UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:[UIImage imageNamed:#"ar.png"] forState:UIControlStateNormal];
[button setFrame:CGRectMake(0, 0, 30, 30)];
button.center=self.view.center;
[button setBackgroundImage:[UIImage imageNamed:#"RS2kQ.png"] forState:UIControlStateHighlighted];
Get Image from here ar.png and RS2kQ.png