UIViewController not loading UIView

Question

嘿，我正在玩我的老師提供的基於表格的應用程序的腳本。不過，我似乎無法得到我自己的視圖加載。

文件：

• SubViewOneController（這是一個子畫面，也有筆尖）
• TapViewController（自定義的UIView我創建並要添加到單元格）
• RootViewController的（主控制器，在意見負載）
• SimpleNavAppDelegate

它是如何工作：在該RootViewController的，T這裏是保存它在聲明的NSDictionary對象一個NSArray - （無效）awakeFromNib {}方法

- (void)awakeFromNib { 

// we'll keep track of our views controllers in this array 
views = [[NSMutableArray alloc] init];  // when using alloc you are responsible for it, and you will have to release it. 

// ==================================================================================================== 
// ==================================================================================================== 

// LOADING IN CUSTOM VIEW HERE: 

// allocate a set of views and add to our view array as a dictionary item 
TapViewController *tapBoardView = [[TapViewController alloc] init]; 

//push onto array 
[views addObject:[NSDictionary dictionaryWithObjectsAndKeys: 
        @"Tab Gestures",  @"title", 
        tapBoardView,   @"controller", 
        nil]]; 

[tapBoardView release]; //release the memory 

// ==================================================================================================== 
// ==================================================================================================== 

SubViewOneController *subViewOneController = [[SubViewOneController alloc] init]; 

// This will set the 2nd level title 
subViewOneController.title = @"Swipe Gestures"; //set it's title 

//push it onto the array  
[views addObject:[NSDictionary dictionaryWithObjectsAndKeys: 
        @"Swipe Gestures", @"title", 
        subViewOneController, @"controller", 
        nil]]; 

[subViewOneController release]; //release the memory 

}

後來我設置的表格視圖：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { 

// OUTPUT -- see console 
NSLog(@"indexPath %i", indexPath.row); // OUTPUT: tapController: <TapViewController: 0x3b2b360> 
NSLog(@"view object: %@", [views objectAtIndex:indexPath.row]); // OUTPUT: view object: controller = <TapViewController: 0x3b0e290>; title = "Tab Gestures"; 

// ----- Hardcoding the controller and nib file in does work, so it's not a linkage issue ------ 
// UNCOMMENT TO SEE WORKING -- comment below section. 
//TapViewController *tapContoller = [[TapViewController alloc] initWithNibName:@"TapBoardView" bundle:nil]; 
//NSLog(@"tapController: %@", tapContoller); 
//[self.navigationController pushViewController:tapContoller animated:YES]; 

// ----- Random Tests ----- 
//UIViewController *targetViewController = [[views objectAtIndex: 0] objectForKey:@"controller"];  // DOES NOT WORK 

// LOADS THE SECOND CELL (SubViewOneController) however will not load (TapViewController) 
UIViewController *targetViewController = [[views objectAtIndex: indexPath.row] objectForKey:@"controller"]; 
NSLog(@"target: %@", targetViewController); // OUTPUT: target: <TapViewController: 0x3b0e290> 

[self.navigationController pushViewController:targetViewController animated:YES]; 

}

閱讀你應該能夠看到硬編碼視圖的註釋，但是試圖從View NSArray加載視圖不起作用。但它確實包含了內存中的對象，看到NSLog證明了這一點。

所有內容都在TapViewController nib文件中鏈接和工作。所以，雅，我有點卡在這一個，任何幫助將是偉大的！

謝謝你們

Answer 1

您使用在頂部TapViewController錯誤的初始化方法。視圖控制器上的普通舊init不會加載筆尖。假設你的筆尖正確連接（如你所說），如果你沒有加載筆尖，那麼視圖控制器的view屬性永遠不會被設置爲任何東西。所以view財產是零。所以你的視圖控制器沒有任何視圖來顯示你的應用程序何時使用它。

TapViewController *tapBoardView = [[TapViewController alloc] init]; 

而你使用正確的你 「硬編碼」 一節中：

TapViewController *tapContoller = [[TapViewController alloc] initWithNibName:@"TapBoardView" bundle:nil];