以编程方式将UIButton添加到自定义ViewController的情节提要

Question

I've successfully implemented walkthrough screens by following AppCoda's Create UIPageViewController Using Storyboard tutorial . At the end of the example a UIPageControl is created in code and now I'm trying to add a UIButton the same way, programmatically.

The button appears if added via storyboard but otherwise none of these have worked for me when (individually) added to my viewDidLoad :

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setTitle:@"Show View" forState:UIControlStateNormal];
button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
// [self.view addSubview:button];
// [self.view bringSubviewToFront:button];
// [self.view insertSubview:button atIndex:0];
// [self.view insertSubview:button atIndex:[self.view subviews].count + 1];
// [self.view insertSubview:button aboveSubview:self.view];
// [self initButton:button];

There's got to be something relatively simple that I'm missing. Should I just stick to Android?

Answer 1

Just uncomment [self.view addSubview:button]; line and it should work. If it doesn't work I believe you have some other view added on top of self.view which hover over your button.