objective-c - 根据数组数量在按钮上设置标题

Question

如何为每个按钮设置标题，以便将按钮标题设置为：1、2、3、4 5 等按钮？

我的按钮：

@interface PregnancyViewController () {
    NSMutableArray *buttons;
}

@end

- (void)viewDidLoad
{
    [super viewDidLoad];

        for( int i = 0; i < 5; i++ ) {
            for( int j = 0; j < 6; j++ ) {
                UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
                button.frame = CGRectMake(j * 50 + 10, i * 50 + 20, 40, 40);

                // Add buttons to my mutable array
                [buttons addObject: button];

                [button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
                [self.view addSubview:button];
            }
        }
}

Answer 1

这个怎么样：

- (void)viewDidLoad
{
    [super viewDidLoad];
    NSUInteger k = 1;
    for( NSUInteger i = 0; i < 5; i++ ) {
        for( NSUInteger j = 0; j < 6; j++ ) {
            UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
            button.frame = CGRectMake(j * 50 + 10, i * 50 + 20, 40, 40);
            NSString* title = [NSString stringWithFormat: @"%@", @(k++)];
            [button setTitle: title forState: UIControlStateNormal]; 
            // Add buttons to my mutable array
            [buttons addObject: button];

            [button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
            [self.view addSubview:button];
        }
    }
}