調用方法來定位錯誤

Question

在我MainMainViewController我創造了新的UIView（ContentView）。我設置了

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，我創建了UIButton並設置了目標操作。但是當我點擊按鈕時，它崩潰並顯示錯誤。你能告訴我哪裏可以解決問題嗎？

- (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"); 
} 

錯誤：

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

Answer 1

在你MainMainViewController，嘗試當你初始化它保留您的DetailView。或者在MainMainViewController中創建detailView作爲retain屬性，然後使用它。