how to random placement of UIButton and value

Question

i have a question view and will show 4 answers, only 1 are correct.

but i do not want the same button to be always the correct answer.

i will like to know how do

Answer 1

I have implemented code for same at my side and it works fine.

-(void)randomAllocation
{
    NSMutableArray* allstring = [[NSMutableArray alloc]initWithObjects:@"Correct",@"Wrong",@"Wrong1",@"Wrong2", nil];

    NSMutableArray* outcomeOFrandom = [[NSMutableArray alloc]init];

    for (int i=0; i<[allstring count]; i++) {
        int temp = 0;

        while (temp==0) {

            int randomInt  =  arc4random()  % 4;


            BOOL result = [outcomeOFrandom containsObject:[allstring objectAtIndex:randomInt]];
            if (result==FALSE ) {

                UIButton* btn = [[UIButton alloc]init];
                [btn setTitle:[allstring objectAtIndex:randomInt] forState:UIControlStateNormal];
                [btn setBackgroundColor:[UIColor blackColor]];

                NSLog(@"tital=%@",[allstring objectAtIndex:randomInt]);

                if (i==0) {
                    [btn setFrame:CGRectMake(5,219,230,45)];
                }
                else if(i==1) 
                    [btn setFrame:CGRectMake(5,273,230,45)];
                }
                else if(i==2) {
                    [btn setFrame:CGRectMake(244,224,230,45)];
                }
                else if(i==3) {
                    [btn setFrame:CGRectMake(244,273,230,45)];
                }

                [outcomeOFrandom addObject:[allstring objectAtIndex:randomInt]];
                [self.view addSubview:btn];
                [btn release];

                temp=1;
                break;
            }

        }

    }

}