How to create a radioGroup in Android inside a Scrollview?

Here is a sample code that creates a radiobutton group inside a scrollview.
Please make sure you have a scrollview in your UI and its linked.

// This function adds the radio buttons inside the scrollview.
Here I am using some of my variables to generate the count of radio buttons.
Please make sure to change it before using it in your code.

NSString *const CHECKED_IMAGE = @"radiochecked.png";
NSString *const UNCHECKED_IMAGE = @"radiounchecked.png";

int y=0;
    
    for(int optionCount = 0; optionCount < [pracObj.answers count]; optionCount++){
        
        UIButton *answerCheckBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [answerCheckBtn addTarget:self action:@selector(answerSelected:)
                                       forControlEvents:UIControlEventTouchDown];
        [answerCheckBtn setTitle:@"" forState:UIControlStateNormal];
        
        //set background image for button
        answerCheckBtn.backgroundColor = [UIColor clearColor];
        answerCheckBtn.frame = CGRectMake(1.0, y+2, 20,20);
        UIImage *buttonImageNormal = [UIImage imageNamed:UNCHECKED_IMAGE];
        UIImage *strechableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0];
        [answerCheckBtn setBackgroundImage:strechableButtonImageNormal forState:UIControlStateNormal];
        
        answerCheckBtn.tag = optionCount + ANSWERTAG_STARTING;
        
        UILabel *answerLabel = [UILabel new];
        answerLabel.tag =  optionCount+100;
        answerLabel.text = [[pracObj.answers objectAtIndex:optionCount] stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceCharacterSet]];
        answerLabel.lineBreakMode = NSLineBreakByWordWrapping;
        answerLabel.numberOfLines = 1;       
        answerLabel.frame = CGRectMake(30, y+2, 300.0, 20.0);
        
        [answerLabel sizeToFit];
        y+=answerLabel.frame.size.height;
        
        [answerLabel setFont:[UIFont systemFontOfSize:10]];
        [answersScrollView addSubview:answerCheckBtn];
        [answersScrollView addSubview:answerLabel];
    }

And click of each radio button you can cal this function to reset the image.

-(IBAction)answerSelected:(id)sender
{
    UIButton *curBtn = (UIButton*) sender;
    NSLog(@"DYN MEthod Clckd %d", curBtn.tag);
    
    UIImage *buttonImageNormal = [UIImage imageNamed:CHECKED_IMAGE];
    UIImage *strechableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0];
    [curBtn setBackgroundImage:strechableButtonImageNormal forState:UIControlStateNormal];
    
    
    [self clearButtons:curBtn.tag];
}

-(void) clearButtons:(int) curTag
{
    int totalAnsCount = [curPracticeQuestionObj.answers count];
    
    for (int y = ANSWERTAG_STARTING; y < (ANSWERTAG_STARTING + totalAnsCount); y++) {
        if (y != curTag) {
            
            UIButton *otherButton = (UIButton *)[answersScrollView viewWithTag:y];
            UIImage *buttonImageNormal = [UIImage imageNamed:UNCHECKED_IMAGE];
            UIImage *strechableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0];
            [otherButton setBackgroundImage:strechableButtonImageNormal forState:UIControlStateNormal];
            
        }
    }
    
}