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嘗試以模態方式呈現UIViewController,但它僅與pushviewconttoller語句一起工作。UIViewController嘗試以模態呈現
[navigationController pushViewController:_viewController animated:YES];
隨着presentModalViewController聲明它只顯示導航欄是它沒有完成按鈕甚至不是UIView的
[navigationController presentModalViewController:self.viewController animated:YES];
這是爲什麼?