Ios 按钮在添加背景时被禁用

我正在使用Parse anypic教程，我想创建一个不同的UI。但是我有一些麻烦

因此，我的ViewController是：

@interface PAPHomeViewController ()
@property (nonatomic, strong) PAPSettingsActionSheetDelegate *settingsActionSheetDelegate;
@property (nonatomic, strong) UIView *blankTimelineView;
@end

@implementation PAPHomeViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    NSLog(@"LoadView is called");

    // Present Anypic UI
    [self presentUI];

}

-(void) presentUI {

/*UIImageView *backgroundImageView = [[UIImageView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
        [backgroundImageView setImage:[UIImage imageNamed:@"DefaultAnypic.png"]];
        self.view = backgroundImageView;*/

    // Settings button
    self.settingsButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [self.settingsButton addTarget:self
               action:@selector(settingsButtonAction:)
     forControlEvents:UIControlEventTouchUpInside];
    [self.settingsButton setTitle:@"Settings" forState:UIControlStateNormal];
    self.settingsButton.frame = CGRectMake(200.0, 200.0, 100.0, 100.0);
    [self.view addSubview:self.settingsButton];
}

@interface PAPHomeViewController : PAPPhotoTimelineViewController

@end

其.h文件如下所示：

@interface PAPHomeViewController ()
@property (nonatomic, strong) PAPSettingsActionSheetDelegate *settingsActionSheetDelegate;
@property (nonatomic, strong) UIView *blankTimelineView;
@end

@implementation PAPHomeViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    NSLog(@"LoadView is called");

    // Present Anypic UI
    [self presentUI];

}

-(void) presentUI {

/*UIImageView *backgroundImageView = [[UIImageView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
        [backgroundImageView setImage:[UIImage imageNamed:@"DefaultAnypic.png"]];
        self.view = backgroundImageView;*/

    // Settings button
    self.settingsButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [self.settingsButton addTarget:self
               action:@selector(settingsButtonAction:)
     forControlEvents:UIControlEventTouchUpInside];
    [self.settingsButton setTitle:@"Settings" forState:UIControlStateNormal];
    self.settingsButton.frame = CGRectMake(200.0, 200.0, 100.0, 100.0);
    [self.view addSubview:self.settingsButton];
}

@interface PAPHomeViewController : PAPPhotoTimelineViewController

@end

PAPPhotoTimelineViewController也是一个独立的ViewController，Home从中扩展而来，它是一个tableViewController，也称为ViewDidLoad

问题：

通过上面的代码，我看到了我的按钮，我可以点击我的按钮

但是，如果我取消对背景的注释，我确实看到了背景，我确实看到了按钮，但是它不能被点击——这就像没有对按钮的触摸被识别一样

---

我也很困惑，现在我正在扩展另一个同样实现viewDidLoad的ViewController，为什么它们都被调用，按照什么顺序等等。

您不应该将新的

UIView

分配给您的

self.view

而不是

self.view=backgroundImageView，只需像随机视图一样添加它

[self.view addSubview:backgroundImageView];

这样做，您将按照正确的方式添加子视图：您的
backgroundImageView
将显示在您的视图中，您的按钮将添加到它上面。
您保存了我的一天！将在几分钟内接受它将成为合格的。