In my project i used the below code for a purpose and it is working properly.
My code:
UIView *view = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:#"%d.jpg",index]]] autorelease];
view.frame = CGRectMake(70, 80, 180, 260);
return view;
But here instead of UIImageView i would like to use UIButton,So I replaced the first lin eof above code by:
UIView *view=[[UIButton alloc] setBackgroundImage:(UIImage *)[scrollImages objectAtIndex:index] forState:UIControlStateNormal];
But at this point i am getting an error message as
"Initializing 'UIView*_strong' with an expression of incompatible type 'void'".
Can anyone help me to solve this by replacing UIImageView with UIButton....
You should init the instance of UIButton after created it via `alloc'
UIButton *button = [[UIButton alloc] init];
[button setBackgroundImage:(UIImage *)[scrollImages objectAtIndex:index] forState:UIControlStateNormal];
UIView *view = button;
You must use an init... method to complete the initialization process
- (void)setBackgroundImage:(UIImage *)image forState:(UIControlState)state return nothing (void), it's certainly incompatible type with UIView.
Like this...
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button addTarget:self action:#selector(pressed:) forControlEvents:UIControlEventTouchUpInside];
UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:#"%d.jpg",index]];
[button setImage:image forState:UIControlStateNormal];
button.frame = CGRectMake(70, 80, 180, 260);
[self.view addSubview:button];
Related
I'm trying to add a centered button in my navbar header, confused as to how I can do it
- (void)viewDidLoad {
[super viewDidLoad];
UIImage *meImage = [[UIImage alloc] initWithContentsOfFile:[NSString stringWithFormat:#"%#/me.png", kSelfBundlePath]];
UIBarButtonItem *meButton = [[UIBarButtonItem alloc] initWithImage:meImage style:UIBarButtonItemStylePlain target:self action:#selector(twitterButton)];
[self.titleView //i read this can be used to like set it but i havent been able to figure it out
help would be appreciated, pretty new
check this code
UIView *container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 44)];
container.backgroundColor = [UIColor clearColor];
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
[btn setFrame:CGRectMake(0, 0, 44, 44)];
[btn setBackgroundImage:[UIImage imageNamed:#"button0.png"] forState:UIControlStateNormal];
[btn addTarget:self action:#selector(btnAction:) forControlEvents:UIControlEventTouchUpInside];
[btn setShowsTouchWhenHighlighted:YES];
[buttonContainer addSubview:button0];
//add your spacer images and button1 and button2...
self.navigationItem.titleView = container;
You can try like this way
UIView *topView = [[UIView alloc]initWithFrame:CGRectZero];
UIButton * button = [[UIButton alloc]initWithFrame:CGRectZero];
[button addTarget:self action:#selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
[button setTitle:#"Title here" forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button sizeToFit];
[topView addSubview:button];
[topView sizeToFit];
self.navigationItem.titleView = topView;
-(void)buttonAction:(Id) sender {
NSLog(#"button clicked");
}
I think its pretty straight, you can use titleView property of UINavigationItem :
-(void)addCenterButton {
UIImage *meImage = [[UIImage alloc] initWithContentsOfFile:[NSString stringWithFormat:#"%#/me.png", kSelfBundlePath]];
UIButton *button = [[UIButton alloc] initWithFrame::CGRectMake(0, 0, 40, 20)];
[button setImage:meImage forState:UIControlStateNormal];
[button addTarget:self action:#selector(twitterButton) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.titleView = button;
}
I have a UIButton and the button background is set to an image. Added
an image view on the top right corner of the button and I set it
to different image when the button is clicked to show the selection.
When I try to automate this using instruments. I don’t see any subviews
(image views) in the UIAutomator.logElementTree()method does not show
any image views.
How to identify the image views added as subview in the UIButton?
Here is the code.
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(40, 40, 100, 100);
[button addTarget:self action:#selector(didTapButton:) forControlEvents:UIControlEventTouchUpInside];
[button setBackgroundImage:[UIImage imageNamed:#“testImage.png”] forState:UIControlStateNormal];
UIImageView *imageview = [[UIImageView alloc] initWithImage:image];
imageview.frame = CGRectMake(70,30,20,20);
[button addSubview:imageview];
You have to set the accessibilityEnabled & accessibilityLabel.
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(40, 40, 100, 100);
[button addTarget:self action:#selector(didTapButton:) forControlEvents:UIControlEventTouchUpInside];
button.accessibilityEnabled = YES;
button.accessibilityLabel =#"My Button";
[button setBackgroundImage:[UIImage imageNamed:#“testImage.png”] forState:UIControlStateNormal];
UIImageView *imageview = [[UIImageView alloc] initWithImage:image];
imageview.accessibilityEnabled = YES;
imageview.accessibilityLabel = #"My Image";
imageview.frame = CGRectMake(70,30,20,20);
[button addSubview:imageview];
Refer this tutorial
Sweet Angel's answer is enough if you have a single UIImageView subview. However, I would suggest using tags to identify subviews.
imageView.tag = 1346;//Any arbitrary number (I am unsure if there are any limitations to the values you can use, but all 4 digit numbers work fine for me).
Then to get the imageView:
UIImageView* imageView = (UIImageView*)[button viewWithTag:1346];
That's it.
If you want to identify imageview on button taped, try following code :
- (IBAction)didTapButton:(UIButton *)sender
{
for (id view in sender.subviews)
{
if ([view isKindOfClass:[UIImageView class]])
{
NSLog(#"Image view captured.....");
}
}
}
I'm trying to put a picture on fullscreen with buttons on to do actions.
Here is a screenshot of my result:
My problem is that the buttons on the first line (the highest) are not touchable.
It seems to have no action on the top layout.
Here is my code:
- (void)showActionsForGlobalFullScreen:(UIGestureRecognizer *)gestureRecognizer {
//LEFT
UIImage* cancelImage = [UIImage imageNamed:#"cancel.png"];
CGRect frameimg = CGRectMake(3, 3, cancelImage.size.width, cancelImage.size.height);
UIButton *cancelButton = [[UIButton alloc] initWithFrame:frameimg];
UIImage* flagImage = [UIImage imageNamed:#"flag.png"];
CGRect frameimg2 = CGRectMake(3, 40, flagImage.size.width, flagImage.size.height);
UIButton *flagButton = [[UIButton alloc] initWithFrame:frameimg2];
[cancelButton addTarget:self action:#selector(closeFullView:) forControlEvents:UIControlEventAllTouchEvents];
[cancelButton setBackgroundImage:cancelImage forState:UIControlStateNormal];
[flagButton addTarget:self action:#selector(displayFlag:) forControlEvents:UIControlEventAllTouchEvents];
[flagButton setBackgroundImage:flagImage forState:UIControlStateNormal];
//RIGHT
UIImage *exitFullScreenImage = [UIImage imageNamed:#"exitFullScreen.png"];
CGRect frameimg3 = CGRectMake(fullScreenViewFromVC.frame.size.width - 25 , 3, exitFullScreenImage.size.width, exitFullScreenImage.size.height);
UIButton *exitFullScreenButton = [[UIButton alloc] initWithFrame:frameimg3];
UIImage *commentImage = [UIImage imageNamed:#"comment.png"];
CGRect frameimg4 = CGRectMake(fullScreenViewFromVC.frame.size.width - 25 , 40, commentImage.size.width, commentImage.size.height);
UIButton *commentButton = [[UIButton alloc] initWithFrame:frameimg4];
[exitFullScreenButton addTarget:self action:#selector(exitFullScreenPhoto:) forControlEvents:UIControlEventAllTouchEvents];
[exitFullScreenButton setBackgroundImage:exitFullScreenImage forState:UIControlStateNormal];
[commentButton addTarget:self action:#selector(diplayComments:) forControlEvents:UIControlEventAllTouchEvents];
[commentButton setBackgroundImage:commentImage forState:UIControlStateNormal];
//[actionsView addSubview:flagButton];
[fullScreenViewFromVC addSubview:cancelButton];
[fullScreenViewFromVC addSubview:flagButton];
[fullScreenViewFromVC addSubview:exitFullScreenButton];
[fullScreenViewFromVC addSubview:commentButton];
}
Important note:
fullScreenViewFromVC is an own class extending UIView and instantiated on my controller.
Basically I'm called the fullscreen method from a picture on a UITableViewCell
I'm using this fullScreenViewFromVC variable to store my data from the current selected cell to my controller.
Thank you for your help.
Finally it was because of another view that I had to hide.
I thought that changing de zPosition of my view in fullscreen should be enough but it did not.
Problem solved.
I don't understand why I'm getting "[UIScrollView imageView]: unrecognized selector sent to instance"
for (int i=0;i<[imagesForGame count];i++)
{
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(i*310, 0, 310, 200);
[button setImageWithURL:[NSURL URLWithString:[imagesForGame objectAtIndex:i]] forState:UIControlStateNormal];
[button addTarget:self action:#selector(openFullPic:) forControlEvents:UIControlEventTouchUpInside];
[_myScroller addSubview:button];
}
-(void)openFullPic:(UIButton *)sender
{
UIButton *random = (UIButton *)[_myScroller viewWithTag:sender.tag];
UIImageView *test = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 300, 300)];
test.image = random.imageView.image; // <-- Error
...
}
The sender will be a button anyway, so use it instead.
-(void)openFullPic:(UIButton *)sender
{
UIButton *random = (UIButton *)sender;
UIImageView *test = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 300, 300)];
test.image = random.imageView.image; // <-- No more error.
...
}
Because you never set the tag for the button.
Do in the first loop, button.tag = i;
You have UIButtons instance in sender variable so you don't need to use viewWithTag at all ;-)
In my ios application i create uiimageviews programmatically like that,
for (int i=0; i<20; i++) {
productID=[products objectAtIndex:i];
UIButton * button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setFrame:CGRectMake(column*197+38 , row*350+8, 159, 45)];
//[button setImage:redButtonImage forState:UIControlStateNormal];
[button addTarget:self
action:#selector(buttonAction:)
forControlEvents:UIControlEventTouchUpInside];
button.tag = productID;
[scrollView addSubview:button];
UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(column*197+170, row*350+25, 13, 13)];
imageView.tag=productID;
UIImage *image = [UIImage imageNamed:#"redImage.png"];
[imageView setImage:image];
[scrollView addSubview:imageView];
}
in my buttonActon, i want to change that uiimageview's image to another image. But i can not do that. Can anyone help me? Thank You.
try like this ,
for (int i=0; i<20; i++) {
productID=[products objectAtIndex:i];
UIButton * button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setFrame:CGRectMake(column*197+38 , row*350+8, 159, 45)];
//[button setImage:redButtonImage forState:UIControlStateNormal];
[button addTarget:self
action:#selector(buttonAction:)
forControlEvents:UIControlEventTouchUpInside];
button.tag = 100+productID;
[scrollView addSubview:button];
UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(column*197+170, row*350+25, 13, 13)];
imageView.tag=productID;
UIImage *image = [UIImage imageNamed:#"redImage.png"];
[imageView setImage:image];
[scrollView addSubview:imageView];
}
keep this one in button action method and pass the imageview tag in the place of imgview.tag
UIImageView *img=(UIImageView *)[scrollView viewWithTag:imgview.tag];
img.image=[UIImage imageNamed:#"name.png"];
Instead of this:
imageView.tag=UrunId;
Write:
imageView.tag = productID + 100;
Because you need a unique tag for each Image View.
Then implement the buttonAction: like:
- (void)buttonAction:(UIButton *)sender
{
UIImageView *imageView = (UIImageView *)[scrollView viewWithTag:(sender.tag+100)];
[imageView setImage:yourImage];
}
Please try to use this one
You should have different tag for button and image.So please give first different tag like this....
UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(column*197+170, row*350+25, 13, 13)];
imageView.tag=button.tag+1;
UIImage *image = [UIImage imageNamed:#"redImage.png"];
[imageView setImage:image];
[scrollView addSubview:imageView];
After that do this...
- (void)buttonAction:(UIButton *)sender
{
UIImageView *imageView = (UIImageView *)[scrollView viewWithTag:sender.tag+1];
imageView.image=[UIImage imageNamed:#"imageName"];
}