iOS 8 & Xcode 6:解決Failed to instantiate the default view controller for UIMainStoryboardFile 'Main'

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把預設Main.storyboard的預設scene(情景)刪除後,拖入新的ViewController,並指定其關聯的ViewController類,運行程式。控制台輸出資訊如下:

Failed to instantiate the default view controller for UIMainStoryboardFile ‘Main‘ - perhaps the designated entry point is not set?

原因是沒設定初始化ViewController。在情境中找到需要充當初始化介面的視圖控制器,在其Attributes Inspector(屬性偵測器)中找到View Controller分區,勾選Is Initial View Controller即可,如所示。

iOS 8 & Xcode 6:解決Failed to instantiate the default view controller for UIMainStoryboardFile 'Main'

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