Perform three different action for a single button - ios

Question

I want to perform three different actions for a single button. I surfed in google also it shows some different options but those are not helpful.
I have declared NSInteger inside CustomUIButton i.e. click and initialize inside IBAction to 0.
Here is the code.
-(void)changeStudentAction:(id)sender
{
CustomUIButton *button=sender;
NSInteger flag = 0;
button.click=0;
if(button.click==0)
{
button.click=1;
[button setSelected:NO];
[button setBackgroundImage:[UIImage imageNamed:#"Absent_on_coloured.png"] forState:UIControlStateNormal];
flag=0;
}
else if (button.click==1)
{
button.click=2;
[button setSelected:YES];
[button setBackgroundImage:[UIImage imageNamed:#"Present_on_coloured.png"] forState:UIControlStateNormal];
flag=1;
}
else if (button.click==3)
{
button.click=0;
[button setBackgroundImage:[UIImage imageNamed:#"Late_on_coloured.png"] forState:UIControlStateNormal];
[button setSelected:YES];
flag=3;
}
}
But it is not working. Can someone tell me where I am doing wrong.

Answer 1

Define button.click=0; globally so initially its value will be zero and after that it will increase.
#interface yourclass : superclass
{
int click;
}
- (void)viewDidLoad{
click=0;
}
-(void)changeStudentAction:(id)sender
{
CustomUIButton *button=sender;
NSInteger flag = 0;
if(click==0)
{
click=1;
[button setSelected:NO];
[button setBackgroundImage:[UIImage imageNamed:#"Absent_on_coloured.png"] forState:UIControlStateNormal];
flag=0;
}
else if (button.click==1)
{
click=2;
[button setSelected:YES];
[button setBackgroundImage:[UIImage imageNamed:#"Present_on_coloured.png"] forState:UIControlStateNormal];
flag=1;
}
else if (button.click==3)
{
click=0;
[button setBackgroundImage:[UIImage imageNamed:#"Late_on_coloured.png"] forState:UIControlStateNormal];
[button setSelected:YES];
flag=3;
}
}

Answer 2

You are setting the button.click = 0 for every action.
So every time you click it is being set to zero.
You can instead keep a separate variable to count in your view controller than having a click property on button. Hope this helps :-)

Answer 3

According to your code,
it was always goes on
if(button.click==0)
{
button.click=1;
[button setSelected:NO];
[button setBackgroundImage:[UIImage imageNamed:#"Absent_on_coloured.png"] forState:UIControlStateNormal];
flag=0;
}
I will give you better suggestion instead of "click" you can use "tag" option which was the one property of uibutton.
First you have to define a custom button on .h file and then set the tag = 0 in - (void)viewDidLoad
method.

Answer 4

CustomUIButton *button;
NSInteger flag = 0;
button.click=0;
use it this way or as simple from all such problems use some other variable as
because every time this function is call its zero every time so make it outside this function and use it
NSInteger flag = 0;
int counter = 0;
-(void)changeStudentAction:(id)sender
{
if(counter ==0)
{
counter =1;
[button setSelected:NO];
[button setBackgroundImage:[UIImage imageNamed:#"Absent_on_coloured.png"] forState:UIControlStateNormal];
flag=0;
}
else if (counter ==1)
{
counter =2;
[button setSelected:YES];
[button setBackgroundImage:[UIImage imageNamed:#"Present_on_coloured.png"] forState:UIControlStateNormal];
flag=1;
}
else if (counter ==3)
{
counter =0;
[button setBackgroundImage:[UIImage imageNamed:#"Late_on_coloured.png"] forState:UIControlStateNormal];
[button setSelected:YES];
flag=3;
}
}

Answer 5

in start button tag to zero then change as following
-(void)changeStudentAction:(id)sender{
CustomUIButton *button=sender;
NSInteger flag = 0;
if(button.tag==0)
{
button.tag=1;
}
else if (button.tag==1)
{
button.tag=2;
}
else if (button.click==3)
{
button.tag=0;
}
}

Answer 6

Please try following code may be solve your problem.
-(void)changeStudentAction:(id)sender
{
CustomUIButton *button=sender;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.2];
[button setBackgroundImage:[UIImage imageNamed:#"Absent_on_coloured.png"] forState:UIControlStateNormal];
[UIView setAnimationDuration:0.4];
[button setBackgroundImage:[UIImage imageNamed:#"Present_on_coloured.png"] forState:UIControlStateNormal];
[UIView setAnimationDuration:0.6];
[button setBackgroundImage:[UIImage imageNamed:#"Late_on_coloured.png"] forState:UIControlStateNormal];
[UIView commitAnimations];
}