I have a UIButton which says "complete".
My UIButton resides in a UIView which I insert into a tableview.
However, I also want to update the UIButton's label to say "Incomplete" when the user taps the button.
The button label does not update!
How can you set the button's label?
Thanks!
When you want the button title to change, use the following:
UIButton *myButton;
//
//
//
[myButton setTitle:#"Incomplete" forState:UIControlStateNormal];
Hope this helps.
You need to call setTitle:forState http://developer.apple.com/library/ios/documentation/UIKit/Reference/UIButton_Class/UIButton/UIButton.html#//apple_ref/occ/instm/UIButton/setTitle:forState:
Try something like this:
if([[[button titleLabel] text] isEqualToString:#"complete"]){
[button setTitle:#"Incomplete" forState:UIControlStateNormal];
// do some stuff
}
Related
With normal button you can do
btn.selected = !btn.selected.
How would I pull that out with UIBarButton?
You can create UIBarButtonItem with the custom view
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:normalImage forState:UIControlStateNormal];
[button setImage:selectedImage forState:UIControlStateSelected];
[button addTarget:self action:#selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithCustomView:button];
Then
-(void)btnClick:(id)sender{
UIBarButtonItem *item = (UIBarButtonItem *)sender;
UIButton *button = (UIButton *)item.customView;
[button setIsSelected:YES];
}
You can use a custom Button inside UIBarItem, remain one just do with you button.
UIBarButtonItem *barButton = [[UIBarButtonItem alloc] initWithCustomView:self.yourButton]
[self.navigationItem setRightBarButtonItem:barButton];
Then:
self.yourButton.select = !self.yourButton.select;
Idea 1. If you are creating your interface in IB, try dragging a standard UIButton object into the UIToolbar. This should encapsulate the UIButton inside a UIBarButton.
Set the UIBarButton object to be plain.
Create outlets to everything as usual.
Then you can use the standard button along with all it's lovely standard things like selected state in the toolbar.
Idea 2. I've pretty much given up on using toolbars as the controls are inflexible as you're finding. Now I just replace instances of UIToolbar with UIViews and do the small amount if code it needs to manage rotation, resizing etc... I've found it more flexible and let's me includes other controls more easily.
It is not possible to have the selected property through UIBarButtonItem straight away. But you can achieve this by placing the UIButton and customizing it like a UIBarbutton. This link will be more useful to you...How do I programmatically get the state of UIBarButtonItems?
the .selected and .highlighted properties don't cut it, because for some reason the button looks even more greyed out (darker shade of the non-highlighted image) when highlighted and selected are set to YES.
I need to make my button go off, just as if the user made it go off.
How do I do that?
I now think I understand what you mean. I put a image in my UIButton and tried to change the state of the button on touch down.
- (IBAction)touchDown:(id)sender {
[(UIButton *)sender setHighlighted:FALSE];
[(UIButton *)sender setSelected:FALSE];
}
I noticed that the image does not become darker until you move your finger. If you connect an action to "touch drag inside" and check .highlighted you should see that it has turned TRUE again. You could set it back to FALSE:
- (IBAction)touchMove:(id)sender
{
[(UIButton *)sender setSelected:FALSE];
}
However
If you're only looking for a way to stop the image from turning grey when the user presses it, do this:
button.adjustsImageWhenHighlighted = FALSE;
Setting an image for UIControlStateHighlighted would also remove the greying.
UIImage *image = [UIImage imageNamed:#"img"];
[button setImage:image forState:UIControlStateNormal];
[button setImage:image forState:UIControlStateHighlighted];
If by "go off" you mean you want to disable the button, you can use:
[myButton setEnabled:NO];
Basically I want to customize the background and the button. I want the button to be square. Things like that.
My designers already provide me with this pictures:
A thing I am looking into is to just use UIButton. However, how do I make UIButton to be on switch mode? What should I do so that if button is clicked then it becomes "selected"
The result that I want is this:
This code may help Your query , you have to modify it ..
https://github.com/domesticcatsoftware/DCRoundSwitch
Thanks.
UIButton *switchButton = [[UIButton alloc] init];
[switchButton setBackgroundImage:offImage forState:UIControlStateNormal];
[switchButton setBackgroundImage:onImage forState:UIControlStateSelected];
When you want the button to look "on", just do: switchButton.selected = YES; after it has been tapped or whenever else you want to set it to that state.
I created a button on my view controller which has a predefined background image. I created an action and an outlet for this button. I want when the user taps the button to change the background image of this button. How can i do that?
I tried to put into the action method of the button something like this:
snapshotCheckbox.image = [UIImage imageNamed:#"snapshot.png"];
but i guess this method is for UImageViews. How can i do the same thing for a button?
Thank you very much for reading my post :D
you can set the image for a given state of the button in the viewDidLoad:
[myButton setBackgroundImage:[UIImage imageNamed:#"myBackgroundImage.png"] forState:UIControlStateHighlighted];
A button has two properties image and backgroundImage..
For setting image use
button.currentImage = image (or)
[button setImage:image ForState:UIControlStateNormal];
For setting backgroundImage use
button.currentBackgroundImage = image (or)
[button setBackgroundImage:image ForState:UIControlStateNormal];
First set the tybe of the button to
button = [UIButton buttonWithType :UIButtonTypeCustom];
then use
[button setImage:[UIImage imageNamed:#"imagename.type"] ForState:UIControlStateNormal];
One solution to do this would be to display the image in a UIImageView and put a transparent UIButton on top of the UIImageView. In Interface Builder you can change a UIButton to "custom".
This would allow you to change the image displayed in the UIImageView easily when handling the action triggered when the UIButton is pushed.
Hope this helps.
You have the setBackgroundImage:forState: method on the button object. See Setting an image for a UIButton in code for more information (seconds answer).
Also, UIButtons automatically change the image when pressed if you set an image for the UIControlStateHighlighted state (though only as long as the user keeps pressing on the button).
Setbutton
if u need image while clicking
[snapshotCheckbox setImage:[UIImage imageNamed:#"snapshot.png"] forState:UIControlStateHighlighted];
or if u want image after Selecting it
[snapshotCheckbox setImage:[UIImage imageNamed:#"snapshot.png"] forState:UIControlStateSelected];
and on that onclick function mention
as
snapshotCheckbox.Selected=YES;
To set an image on a button, just press the button you want an image to in Main.storyboard, then, in the utilities bar to the right, press the attributes inspector and set the background to the image you want! Make sure you have the picture you want in the supporting files to the left.
I have this working in C#, but don't know where to go with Objective C (Xcode specifically).
I have 8 buttons
Stack1, Stack2, etc.
I want to choose Stack(variable) and change the image.
In C# I used
Button Stacks = this.Controls["Stack" + StackNumber.ToString()] as Button;
Stacks.BackgroundImage = .....
Can I do this in Objective C also?
I hope I understand your question correctly. You want to change button's image by clicking on another button. You can assign tag property to your different buttons like stack1.tag = 1001; , stack2.tag = 1002; , stack3.tag = 1003;
Now in your button click method :
- (IBAction)buttonStack1Click:(id)sender // for stack1 button
{
UIButton *tempStack = (UIButton *)[self.view viewWithTag:1003]; //to change image of stack3 button
// Now change the image of stack3 button
[tempStack setImage:[UIImage imageNamed:#"su.png"] forState:UIControlStateNormal];
}
Hope it gives an idea...
Take help of for loop and implement the code below :
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self
action:#selector(aMethod:)
forControlEvents:UIControlEventTouchDown];
[button setTitle:#"Show View" forState:UIControlStateNormal];
button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
[view addSubview:button];
Any query arises,you can tell me.. hope that helps you.
If you want to perform certain function when a button is clicked then there are two ways..
One is Sarah way:Creating Button programmatically
The Other ways is if you are designing buttons in your interface builder :
Then :
1) Make those Buttons an IBOutlet..Also Make IBAction(Lots of tutorials available online..google them)
2) The IBAction will be something like this : - (IBAction)StackButton(YourNumber)Clicked:(id)sender {
In that function change the image of the button you want.
Like
[StackButton1 setImage:MyImage forState: UIControlStateNormal];