在UIViewController中调用方法来定位错误

Question

在我的MainMainViewController我创建了新的UIView（ContentView）。我设置了

DetailViewController *detailView = 
   [[DetailViewController alloc] initWithObject:paAnnotation];
detailView.view.frame = CGRectMake(0, 
                                   0, 
                                   [self getWidthOfScreen], 
                                   [self getWidthOfScreen]);
[contentView addSubview:detailView.view];

它工作正常，但在我的DetailViewController中，我创建了UIButton并设置了目标操作。但是当我点击按钮时它会崩溃并向我显示错误。你能告诉我哪里可以出问题吗？

- (id)initWithObject:paAnnotation {

    if ((self = [super init])) {
        self.annotation = paAnnotation;
    }

    return self;
}    

- (void)viewDidAppear:(BOOL)animated {

        UIButton *closeButton = [[UIButton alloc] initWithFrame:CGRectMake(50, 50, 50, 50)];
        closeButton.backgroundColor = [UIColor redColor];
        [closeButton addTarget:self 
                        action:@selector(closeContent) 
              forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview:closeButton];

}

- (void)closeContent {
    NSLog(@"Test");
}

ERROR：

-[GEOVectorTile closeContent]: unrecognized selector sent to instance 0x19d0a1e0

Answer 1

在MainMainViewController中，尝试在初始化时保留detailView。或者在MainMainViewController中将detailView创建为retain属性，然后使用它。