When I touch the button at that time I want to change image & when i release the touch button image is as it is.
I want to apply below code but it's not with my expectation.
please give me any suggestion.....
-(IBAction)actionEnter:(id)sender{
if ([sender isSelected]) {
[sender setImage:[UIImage imageNamed:#"enter-hover.png"]
forState:UIControlStateNormal];
[sender setSelected:NO];
} else {
[sender setImage:[UIImage imageNamed:#"enter.png"]
forState:UIControlStateSelected];
[sender setSelected:YES];
}
You can use UIControlStateHighlighted for this.
[myButton setImage:[UIImage imageNamed:#"enter-hover.png"]
forState:UIControlStateHighlighted];
You can also set this from interface builder by setting the image for highlighted state.
I think this should do it. Set the images after creating the button
[yourButton setImage:[UIImage imageNamed:#"enter-hover.png"]
forState:UIControlStateSelected];
[yourButton setImage:[UIImage imageNamed:#"enter.png"]
forState:UIControlStateNormal];
and do this
- (IBAction)actionEnter:(id)sender{
UIButton *button = (UIButton *)sender;
button.selected = !button.selected;
}
In Swift:
button.setImage(UIImage(named: "enter.png"), forState: [.Selected, .Highlighted])
I think, you could set the image in the beginning for normal and selected state ..
Try with below when you create the UIButton object. [Use the images as per your requirement]
[myButton setImage:[UIImage imageNamed:#"enter.png"]
forState:UIControlStateNormal];
[myButton setImage:[UIImage imageNamed:#"enter-hover.png"]
forState:UIControlStateSelected];
#7KV7 got me thinking. I have favorite and ignore buttons that I want to use to mark favorite pictures and pictures that I never want to see again. I used his method to initialize the buttons and then slightly modified his method to toggle the buttons on and off.
In this example, if you mark a picture as a favorite, you want to turn off the ignore button and vice versa. The delegate handles the database stuff.
self.favoriteButton = [UIButton buttonWithType:UIButtonTypeCustom];
self.ignoreButton = [UIButton buttonWithType:UIButtonTypeCustom];
[self.favoriteButton setImage:[UIImage imageNamed:#"Favorite-Selected"]
forState:UIControlStateSelected];
[self.favoriteButton setImage:[UIImage imageNamed:#"Favorite"]
forState:UIControlStateNormal];
[self.ignoreButton setImage:[UIImage imageNamed:#"Ignore-Selected"]
forState:UIControlStateSelected];
[self.ignoreButton setImage:[UIImage imageNamed:#"Ignore"]
forState:UIControlStateNormal];
If you are just toggling a button on or off, you won’t need to make it a property, since the buttonPressed sender knows which button has been pressed. I need to have them be property since I need to tell the opposite button to turn its highlight off.
- (void)favoriteIgnore:(UIButton *)buttonPressed {
// Toggle the tapped button
buttonPressed.selected = ( buttonPressed.selected) ? NO : YES;
id <ScoringToolbarDelegate> TB_delegate = _delegate;
// Turn off the other button and call the delegate
if ([buttonPressed.currentTitle isEqualToString:#"favorite"]) {
self.ignoreButton.selected = NO;
[TB_delegate favoriteButtonPressed];
} else {
self.favoriteButton.selected = NO;
[TB_delegate ignoreButtonPressed];
}
}
to change the image immediately use the backgroundImage property.
Related
i have 2 buttons that keep with the pressed image even when they are released, until the other button is pressed, then the image returns to the normal image my code is this:
- (IBAction)button1_touch:(UIButton *)sender
{
[Button2 setImage:[UIImage imageNamed:#"b2Released.png"] forState:UIControlStateNormal];
[Button1 setImage:[UIImage imageNamed:#"b1Pressed.png"] forState:UIControlStateNormal];
}
- (IBAction)button2_touch:(UIButton *)sender
{
[Button1 setImage:[UIImage imageNamed:#"b1Released.png"] forState:UIControlStateNormal];
[Button2 setImage:[UIImage imageNamed:#"b2Pressed.png"] forState:UIControlStateNormal];
}
the code above works fine when the app starts, the behavior is the expected pressing both buttons, images change correctly, but when i press other button than those two, the "Button2" once it gets the "B2Pressed.png" image, it never returns to its released image, i wrote a nslog in button1_touch and it gets printed as expected, and the Button1 gets its pressed image, but the Button2 is not getting its released image, is like the method setImage of UiButton gets broken when i press other button than those two, other buttons are independent from those two, for me this behavior has absolutely no sense at all, could it be xcode broken? i am working on xcode 7.2
EDIT:
the problem occurs when i press another button only if that button has a action selector assigned to it (UIControlEventTouchUpInside).
You can use selected state of UIButton for this purpose:
- (void)viewDidLoad {
// ...
// the place where you do buttons setup
[button1 setImage:[UIImage imageNamed:#"b1Released"] forState:UIControlStateNormal];
[button1 setImage:[UIImage imageNamed:#"b1Pressed"] forState:UIControlStateSelected];
[button2 setImage:[UIImage imageNamed:#"b2Released"] forState:UIControlStateNormal];
[button2 setImage:[UIImage imageNamed:#"b2Pressed"] forState:UIControlStateSelected];
}
- (IBAction)firstButtonTouch:(UIButton *)sender {
button1.selected = YES;
button2.selected = NO;
}
- (IBAction)secondButtonTouch:(UIButton *)sender {
button1.selected = NO;
button2.selected = YES;
}
Confession: I have been through every possible link I could find, but unfortunately none work for me.
I am creating buttons dynamically. When a button is selected, it should change the color of the selected button and the rest should remain the default color. This way, the user can identify which button is selected.
Suppose there are 3 buttons: all blue in color, and when I select the first one, it should change to white and other two should remain blue. When I select the second, the first one should go back to blue and the second should now be white.
btnCounts data I am fetching from server and would vary.
-(void)createButtons{
for (int i=0; i<btnCounts; i++) {
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn setTag:i];
[btn setFrame:CGRectMake(xVal, 0, width/btnCounts, 40)];
// [btn setImage:[UIImage imageNamed:#"btn_image.png"] forState:UIControlStateNormal];
[btn setBackgroundImage:[UIImage imageNamed:#"blue.png"] forState:UIControlStateNormal];
[btn setBackgroundImage:[UIImage imageNamed:#"white.png"] forState:UIControlStateSelected];
[btn setTitle:name forState:UIControlStateNormal];
[btn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[btn addTarget:self action:#selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
[scrV addSubview:btn];
xVal += self.view.frame.size.width/btnCounts+1;
}
}
Now, in btnClicked: method I am passing the button as a parameter, so that I can use selected button.
-(void)btnClicked:(UIButton *)button
{
int tag = (int)button.tag;
//...
}
Please help me to find what I am missing here.
Thanks.
Create an instance UIButton variable to house the selected button so that you can deselect it when the next button is tapped. If you only pass the currently-tapped button to your btnClicked: method, you won't know which button to deselect (if any).
#implementation ClassName {
UIButton *previousButton;
}
...
- (void)btnClicked:(UIButton *)button
{
if(previousButton)
[previousButton setBackgroundColor:[UIColor blueColor]];
previousButton = button;
[button setBackgroundColor:[UIColor whiteColor]];
// do whatever else you need to do here
}
For that you need to store selected button in temporary object.
Create button in interface(.h) file:
UIButton *selectedButton;
Than add following line in -(void)createButtons method before for loop.
selectedButton = nil;
for() {...}
Here selectedButton is set to nil because initially none of the buttons are selected.
And finally replace your -(void)btnClicked:(UIButton *)button method with following method.
-(void)btnClicked:(UIButton *)button {
if(selectedButton) {
selectedButton.selected = NO;
}
button.selected = YES;
selectedButton = button;
}
If you want to make any button initially selected than assign that button to selectedButton like in btnClicked method.
I have two buttons which is used to display two background image. When i press buttonOne image should appear on it while the image of buttonTwo should disappear and vice-versa.
-(IBAction)buttonOne:(UIButton *)sender{
[sender setBackgroundImage:myimage1 forState:UIControlStateNormal];
};
-(IBAction)buttonTwo:(UIButton *)sender{
[sender setBackgroundImage:myimage2 forState:UIControlStateNormal];
};
I can't put code this way
-(IBAction)buttonTwo:(UIButton *)sender{
[sender setBackgroundImage:myimage2 forState:UIControlStateNormal];
[buttonOne setBackgroundImage:nil forState:UIControlState Normal];
};
Obviously i can't put sender in place of buttonOne in place of sender.
putting buttonOne makes it unusable to use same code in every button, so i need a reusable code in place of buttonOne.
To add more, i have 25 buttons so which button's background i want to set nil depends on my code;
Try this:
-(IBAction)buttonOne:(UIButton *)sender{
[sender setBackgroundImage:myimage1 forState:UIControlStateNormal];
[btn_2 setHidden:NO];
[btn_1 setHidden:YES];
};
-(IBAction)buttonTwo:(UIButton *)sender{
[sender setBackgroundImage:myimage2 forState:UIControlStateNormal];
[btn_1 setHidden:NO];
[btn_2 setHidden:YES];
};
You can do that by giving different tag to both button and code as bellow
if(sender.tag == buttonOne.tag)
{
[buttonOne setBackgroundImage:myimage1 forState:UIControlStateNormal];
[buttonTwo setBackgroundImage:nil forState:UIControlStateNormal];
}
else if(sender.tag == buttonTwo.tag)
{
[buttonOne setBackgroundImage:nil forState:UIControlStateNormal];
[buttonTwo setBackgroundImage:myimage2 forState:UIControlStateNormal];
}
I have a UIButton in the footer of UITableView. It has an empty checkbox as its unselected state, and a checked box as its selected state. It works perfectly in portrait, but if the view ever rotates to landscape, the button's image is frozen in whatever state it was when it rotated. The button still sends messages correctly after rotation, but the image does not change.
self.theButton = [UIButton buttonWithType:UIButtonTypeCustom];
[self.theButton setImage:checkbox
forState:UIControlStateNormal];
[self.theButton setImage:checkedBox
forState:UIControlStateSelected];
This code appears in the tableView:viewForFooterInSection: of my view controller. In the action linked to the button, I set self.theButton.selected = !self.theButton.selected;
What's going on?
You can do this in your button action
- (void)didTapCheckbox:(id)sender {
UIButton *btn =(UIButton *)sender;
if (btn.selected == YES) {
[btn setSelected:NO];
}
else{
[btn setSelected:YES];
}
}
instead of your code just do this
if(self.theButton == nil){
self.theButton = [UIButton buttonWithType:UIButtonTypeCustom];
[self.theButton setImage:checkbox
forState:UIControlStateNormal];
[self.theButton setImage:checkedBox
forState:UIControlStateSelected];
}
I'm to trying change the button image after tapping on it but its not working.
- (IBAction)click:(id)sender {
UIButton *btn = (UIButton*)sender;
[btn setBackgroundImage:[UIImage imageNamed:#"vv.png"] forState:UIControlStateHighlighted];
}
I have seen the many solutions which given here its not working for me please tell me is there any other way to make it done.
Try UIControlStateNormal
[btn setBackgroundImage:[UIImage imageNamed:#"vv.png"] forState:UIControlStateNormal];
Try this
[btn setBackgroundImage:[UIImage imageNamed:#"vv.png"] forState:UIControlStateNormal];
If you are after something like "toggle button" you can use the following code
- (IBAction)click:(id)sender {
UIButton *btn = (UIButton*)sender;
btn.selected = !btn.selected;
}
previously setting up the image for the selected state in nib/storyboard or programmatically:
- (void)viewDidLoad {
[super viewDidLoad];
[self.btn setBackgroundImage:[UIImage imageNamed:#"vv.png"] forState:UIControlStateSelected];
}
This way if you press the button again it will get back to the original image.
If you want to change image to "vv.png" for good then just use:
[btn setBackgroundImage:[UIImage imageNamed:#"vv.png"] forState:UIControlStateNormal];
use
(IBAction)click:(UIButton *)sender
instead of
(IBAction)click:(id)sender
Try this
- (IBAction)click:(id)sender {
UIButton *btn = (UIButton*)sender;
[btn setImage:[UIImage imageNamed:#"vv.png"] forState:UIControlStateNormal];
}