I create a button like this, but when I click on it there's no changing effect.
UIButton *button = [[UIButton alloc] init];
button.translatesAutoresizingMaskIntoConstraints = NO;
[button setTitle: #"xxxxx" forState: UIControlStateNormal];
[button setTitleColor: [UIColor colorWithRed:0.98 green:0.44 blue:0.05 alpha:1] forState: UIControlStateNormal];
I'm not going to use two images, I just want the text to change a bit. Just like a fresh button dragged to the UIViewController.
What did I miss?
You have to set a title and a title color when the button is clicked.
[button setTitle: #"clicked" forState: UIControlStateHighlighted];
[button setTitleColor: [UIColor redColor] forState: UIControlStateHighlighted];
See UIControl Class Reference
Related
I have a hyperlink label in my application.Clicking on it opens the application i want.
The problem is after i click on it the font size of the label shrinks automatically.
Is there a way to avoid this??
Please suggest a solution for this issue. Thanks in advance
I would suggest you to use UIButton with UIButtonTypeCustom and clear background instead of UILabel. It will look like UILabel and in the action method you can perform any task.
UIButton *btn = [[UIButton alloc] initWithFrame:btn_frame];
[btn setBackgroundColor:[UIColor clearColor]];
[btn addTarget:self action:#selector(DoSomething) forControlEvents:UIControlEventTouchUpInside];
[btn setTitle: #"Button_Title" forState: UIControlStateNormal];
[btn setTitleColor: #your_choice forState:UIControlStateNormal];
[btn setTitleColor: #your_choice forState:UIControlStateHighlighted];
btn.titleLabel.font = #your_choice
btn.titleLabel.textAlignment = #your_choice;
btn.contentVerticalAlignment = #your_choice;
if still you want UILabel here is link might help you..
Attributed Label
I want my UIButton to show up the highlighted state when I click over a button that is already selected.
Basically in the highlighted state I apply a *.png image as my UIButton backgroundImage to give a pressed down effect.
But if the button is already in the Selected State When I click over it again I just can't see the highlighted state but it goes straight to the normal state!
Watch the Issue--> Video of the Issue!
Help please
//0 init UIButton
UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(x, y, aSide, aSide)];
//1 Give it a backgroundColor
[button setBackgroundColor:aColor];
[..]
//2 Set titleLabel and its style
[button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[button setTitleColor:[UIColor redColor] forState:UIControlStateSelected];
[button setTitleColor:[UIColor grayColor] forState:UIControlStateHighlighted];
UIImage *shadowImage = [UIImage imageNamed:kBtnShadow];
shadowImage = [shadowImage stretchableImageWithLeftCapWidth:floorf(shadowImage.size.width/2) topCapHeight:floorf(shadowImage.size.height/2)];
[button setBackgroundImage:shadowImage forState: UIControlStateHighlighted];
[button setTitle:aLabel forState: UIControlStateNormal];
//3 Assign tag and Action
[button setTag:tag];
[button addTarget:target action:a forControlEvents:UIControlEventTouchUpInside];
The various states: UIControlStateNormal, UIControlStateSelected, and (UIControlStateSelected | UIControlStateHighlighted) are all actually distinct. If you want your shadowImage to apply both in the (only) highlighted state and in the highlighted+selected state, you must also set:
[button setBackgroundImage:shadowImage forState:(UIControlStateHighlighted | UIControlStateSelected)]
In swift this would be:
button.setBackgroundImage(shadowImage, forState: UIControlState.Selected.union(UIControlState.Highlighted))
In Swift v3 (Nov. 2016):
button.setBackgroundImage(shadowImage, for: UIControlState.selected.union(UIControlState.highlighted))
Swift 4.2
Applicable programmatically only.
aButton.setImage(UIImage(named: "your_image"), for: [.selected, .highlighted])
I need a quick way to change the color of an UIButton live (in response to a delegate call) . So the button is drawn with a white background (standard) then when a delegate call comes it needs to change to a blue/red background.
I tried :
btn.backgroundColor = [UIColor redColor];
[btn setNeedsDisplay];
This doesn't work...
Also it would be a good ideea to change the color of the button text... How is this done????
Try using it like this :
[button setBackgroundColor:someColor forState:UIControlStateNormal];
Did it work for you .. ? I am assuming you have made your button a custom button type.
If it worked, you may want to consider, accepting the answer
First make your UIButton type Custom..
UIButton* myButton = [UIButton buttonWithType:UIButtonTypeCustom];
[myButton setbackgroundColor:[UIColor blueColor] forState: UIControlStateNormal];
[myButton setTitleColor:[UIColor blueColor] forState: UIControlStateNormal];
I am using xcode 4.6 to develop an app. Here i want to add UIButton programmatically to UIscrollview. This is the code i follow.
UIButton *bt =[[UIButton alloc]initWithFrame:frame];
bt=[UIButton buttonWithType:UIButtonTypeCustom];
[bt setTitle:#"Custom Button" forState:UIControlStateNormal];
[bt addTarget:self action:#selector(userTappedOnLink:) forControlEvents:UIControlEventTouchUpInside];
bt.backgroundColor = [UIColor grayColor];
bt.titleLabel.textColor=[UIColor blueColor];
[self.mainscrollview addSubview:bt];
[self.mainscrollview bringSubviewToFront:bt];
Now the problem is that Button gets disappeared (technically its textcolor becomes white) on click. I checked keeping UIscrollview color to red that th button was still in the view but i cant get the reason why its text color changed and how do i undo dis.
Basically I wan to create a clickable link using UIbutton.
I know uitextview approach (datadetectortype) but its of no use as i want to show different text in the label for the link and the actual link.
Note: The textcolor doesnt change back to blue and remains white only.
Thanks in advance.
Try the below code
UIButton *bt =[UIButton buttonWithType:UIButtonTypeCustom];
bt.frame = CGRectMake(50.0, 50.0, 100.0, 50.0);
[bt setTitle:#"Custom Button" forState:UIControlStateNormal];
[bt addTarget:self action:#selector(userTappedOnLink:) forControlEvents:UIControlEventTouchUpInside];
bt.backgroundColor = [UIColor grayColor];
bt.titleLabel.textColor=[UIColor blueColor];
[self.scrollTest addSubview:bt];
-(void)userTappedOnLink:(UIButton*)sender
{
NSLog(#"Test ..");
[self performSelector:#selector(changeBtnTextColor:) withObject:sender afterDelay:1.0];
}
-(void)changeBtnTextColor:(UIButton*)btn
{
btn.titleLabel.textColor=[UIColor blueColor];
}
hope it will work for you.
use below code you will get your solution
UIButton *bt =[[UIButton alloc]initWithFrame:frame];
bt=[UIButton buttonWithType:UIButtonTypeCustom];
[bt setTitle:#"Custom Button" forState:UIControlStateNormal];
[bt addTarget:self action:#selector(userTappedOnLink:) forControlEvents:UIControlEventTouchUpInside];
[bt setBackgroundColor:[UIColor grayColor]];
[bt setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
[self.mainscrollview addSubview:bt];
[self.mainscrollview bringSubviewToFront:bt];
Use the below code:
[bt setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
Problem is you are set Title to titleLabel and you are changing textColor of buttonTitle color.
All the best !!!
check Button's Fram .. is it valid or not ??
and remove bt=[UIButton buttonWithType:UIButtonTypeCustom]; line from your code.
In my application I have created 20 buttons with in a scroll view, now problem is that I was not able to highlight the selected button.
My intention is to show the pressed button with a different look than normal. When another button is pressed the previous one should become normal:
UIButton *Abutton = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];
[Abutton setTag:i-1];
Abutton.frame = CGRectMake(30.0, 0+j, 40.0, 40.0);
[Abutton setTitle:#"" forState:UIControlStateNormal];
Abutton.backgroundColor = [UIColor clearColor];
[Abutton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal ];
UIImage *buttonImageNormal = [UIImage imageNamed:#"image1.png"];
UIImage *strechableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0];
[Abutton setBackgroundImage:strechableButtonImageNormal forState:UIControlStateNormal];
UIImage *buttonImagePressed = [UIImage imageNamed:#"image2.png"];
UIImage *strechableButtonImagePressed = [buttonImagePressed stretchableImageWithLeftCapWidth:12 topCapHeight:0];
[Abutton setBackgroundImage:strechableButtonImagePressed forState:UIControlStateHighlighted];
[Abutton addTarget:self action:#selector(buttonpressed:) forControlEvents:UIControlEventTouchUpInside];
[scrollview addSubview:Abutton];
Finally I created the method for Abutton pressed as below:
-(IBAction)buttonpressed:(id)sender{
Abutton.highlighted=YES;
//.....
//.....
}
If do it like this then only the last button created dynamically gets highlighted. That's not exactly what I wanted.
I think you should replace your current code for the button pressed:
-(IBAction)buttonpressed:(id)sender{
UIButton *b = (UIButton *)sender;
b.highlighted = YES;
//.....
//.....
}
In your example you are specifically highlighting "AButton". This code highlights the button being pressed.
Solution 1:
Create an NSSet with references to all the buttons. In your buttonPressed method, call makeObjectsPerformSelector on the NSSet's buttons, setting them to the unhighlighted state.
Solution 2:
Use a UISegmentedControl. That seems like what you should be doing in this case anyway.