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2014/10/15 ¤U¤È 10:11:10
iphone Programming Glossary: loginscreenviewcontrollerShow a login screen before a Tab Bar Controller http://stackoverflow.com/questions/6034893/show-a-login-screen-before-a-tab-bar-controller prefs NSUserDefaults standardUserDefaults NSString test prefs objectForKey @ username if test @ null test nil LoginScreenViewController login LoginScreenViewController alloc initWithNibName @ LoginScreenViewController bundle nil self.window addSubview login.view.. NSString test prefs objectForKey @ username if test @ null test nil LoginScreenViewController login LoginScreenViewController alloc initWithNibName @ LoginScreenViewController bundle nil self.window addSubview login.view self.window makeKeyAndVisible.. @ username if test @ null test nil LoginScreenViewController login LoginScreenViewController alloc initWithNibName @ LoginScreenViewController bundle nil self.window addSubview login.view self.window makeKeyAndVisible else self.window addSubview tabBarController.view..
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