The selected device specifies an unsupported architecture 解決辦法

轉載地址：http://stackoverflow.com/questions/24025648/the-selected-device-specifies-an-unsupported-architecture

第一步：

Close simulator if it is opend

第二步：

    Press Command + shift + k (or clean the project by selecting product menu item from xcode menu) and then press Command + r (or run the project)...