Question

I’m diving into iOS development and I’m trying to figure out how to control the size and layout of multiple child views (in this case, two child views). I posted this question in a different context and my question wasn’t getting it answered, so I’m reposting it as a much simpler question. I’m attempting to add to children view and position them at (0, 0) and (100, 100) respectively, but the first view (master) I add ends up filling the whole screen. My code is very simple, what am I doing wrong that is preventing me from controlling the size and position of the two children views?

MySplitViewController.m

#import "MySplitViewController.h"
#import "MasterViewController.h"
#import "DetailViewController.h"

@interface MYSplitViewController (){}

@property (nonatomic, strong) MasterViewController *masterViewController;
@property (nonatomic, strong) DetailViewController *detailViewController;

@end

@implementation MySplitViewController

- (id)initWithCoder:(NSCoder *)aDecoder{
    self = [super initWithCoder:aDecoder];
    if (self) {
      self.masterViewController = [[MasterViewController alloc] initWithNibName:nil bundle:nil];
      self.detailViewController = [[DetailViewController alloc] initWithNibName:nil bundle:nil];
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.view.frame = CGRectMake(0, 0, 768, 1004);
    [self.view addSubview:self.masterViewController.view];
    [self.masterViewController viewDidLoad];
    [self.view addSubview:self.detailViewController.view];
    [self.detailViewController viewDidLoad];
}

@end

MasterViewController.m

#import "MasterViewController.h"

@interface MasterViewController ()

@end

@implementation MasterViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
    }
    return self;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    UITableView *table = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, 100, 1004) style:UITableViewStylePlain];
    table.dataSource = self;
    table.delegate = self;
    [self.view addSubview:table];
}

@end

DetailViewController.m

#import "DetailViewController.h"

@interface DetailViewController ()

@end

@implementation DetailViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
    }
    return self;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    UIView *uiview = [[UIView alloc] initWithFrame:CGRectMake(100, 0, 668, 1004)];
    [self.view addSubview:uiview];
}

@end

Thanks so much in advance for your wisdom!

Answer 1

Try setting the frames for self.masterViewController.view and self.detailViewController.view before adding as subview to self.view.

For eg:-

self.masterViewController.view.frame = CGRectMake(0, 0, 100, 100);
self.detailViewController.view.frame = CGRectMake(100, 100, 200, 200);

And you are not supposed to call viewDidLoad method directly. It gets called automatically once the view is loaded on the screen.