Showing Selected Buttons if Back button is Pressed [closed] - ios

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On first Page i am having some buttons , if i press any button it will move to Second page , here if i press back button in the navigation bar it will move to first page
i have created the buttons dynamically based on the array count ,i want to show the selected button when i move back to first page , how can i do this ?Please help me to do this .here is the code that i have used for creating buttons
int buttonheight = 30;
int horizontalPadding = 20;
int verticalPadding = 20;
int totalwidth = self.view.frame.size.width;
int x = 10;
int y = 150;
for (int i=0; i<array.count; i++)
{
NSString* titre = [array objectAtIndex:i];
//
CGSize contstrainedSize = CGSizeMake(200, 40);//The maximum width and height
NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
[UIFont systemFontOfSize:20.0], NSFontAttributeName,
nil];
CGRect frame = [titre boundingRectWithSize:contstrainedSize options:NSStringDrawingUsesLineFragmentOrigin attributes:attributesDictionary context:nil];
int xpos = x + CGRectGetWidth(frame);
if (xpos > totalwidth) {
y =y +buttonheight+ verticalPadding;
x = 10;
}
UIButton * word= [UIButton buttonWithType:UIButtonTypeRoundedRect];
self.word = word;
NSLog(#"%#", NSStringFromCGRect(frame));
word = [UIButton buttonWithType:UIButtonTypeRoundedRect];
word.frame = CGRectMake(x, y, CGRectGetWidth(frame)+5, CGRectGetHeight(frame));
[word setTitle:titre forState:UIControlStateNormal];
word.backgroundColor = [UIColor colorWithRed:30.0/255.0 green:134.0/255.0 blue:255.0/255.0 alpha:1.0];
[word setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[word setTag:i];
[word addTarget:self action:#selector(btn1Tapped:) forControlEvents:UIControlEventTouchUpInside];
word.layer.borderColor = [UIColor blackColor].CGColor;
word.layer.borderWidth = 1.0f;
word.layer.cornerRadius = 5;
[self.view addSubview:word];
x =x+horizontalPadding+CGRectGetWidth(frame);
}
- (IBAction)btn1Tapped:(id)sender {
NSString *btnTitle;
btnTitle = [(UIButton *)sender currentTitle];
NSLog(#"%#",self.title);
ReasonViewController *ReasonVC = [self.storyboard instantiateViewControllerWithIdentifier:#"ReasonVC"];
ReasonVC.btnTitle = btnTitle;
NSLog(#"%#",self.imageArray);
ReasonVC.imageArray1 = self.imageArray;
[self.navigationController pushViewController:ReasonVC animated:YES];
}

Answer 1

=====Appdelegate.h========
#property (assign, nonatomic) long int btnTag;
=======CategoryViewController.h============
import "AppDelegate.h"
#interface CategoryViewController : UIViewController
{
AppDelegate *appdel;
}
===========CategoryViewController.m=======
add code
if(appdel.btnTag == word.tag)
{
word.selected = YES;
}
below [word setTag:i]; code
then add
UIButton *btn = (UIButton *) sender;
appdel.btnTag = btn.tag;
in - (IBAction)btn1Tapped:(id)sender method

Answer 2

The UIButton object has different states included the "Selected state". You can set different background image or title for each state you want. When you press it you can change its state like this:
//After you inited your UIButton Object do this:
[button setBackgroundImage:selectedBGImage forState:UIControlStateSelected];
[button setBackgroundImage:deselectedBGImage forState:UIControlStateNormal];
//You can also find the title change method for state accordingly
- (void)buttonAction:(UIButton *)sender
{
sender.selected = !sender.selected;
//TODO
}
So, when you pop back, the button will keep its "selected" state.

Answer 3

You have to store button tag in appdelegate and while creating button check with button tag/i values and do selected. please see below code
in AppDelegate.h
#property (assign, nonatomic) int btnTag;
create an object of AppDelegate on your current ViewController then
AppDelegate *appdel = (AppDelegate *)[[UIApplication sharedApplication] delegate];
int buttonheight = 30;
.
.
.
[word setTag:i];
if(word.tag == appdel.btnTag)//appdel is object of AppDelegate
{
word.selected = YES;
}
[word addTarget:self action:#selector(btn1Tapped:) forControlEvents:UIControlEventTouchUpInside];
word.layer.borderColor = [UIColor blackColor].CGColor;
word.layer.borderWidth = 1.0f;
word.layer.cornerRadius = 5;
[self.view addSubview:word];
x =x+horizontalPadding+CGRectGetWidth(frame);
}
- (IBAction)btn1Tapped:(id)sender {
UIButton *btn = (UIButton *) sender;
appdel.btnTag = btn.tag;
NSString *btnTitle;
btnTitle = [(UIButton *)sender currentTitle];
NSLog(#"%#",self.title);
ReasonViewController *ReasonVC = [self.storyboard instantiateViewControllerWithIdentifier:#"ReasonVC"];
ReasonVC.btnTitle = btnTitle;
NSLog(#"%#",self.imageArray);
ReasonVC.imageArray1 = self.imageArray;
[self.navigationController pushViewController:ReasonVC animated:YES];
}
enter image description here
I am getting like below screenshot , if i tapped any button it will move to next page and the backgroundcolor is changed to red color,and come back to same page by clicking back and now i tapped another button it is also showing in red color.
I have use this two lines in button action method :
UIButton *btn = (UIButton *) sender;
[btn setBackgroundColor:[UIColor redColor]];