iOS development--Get the viewcontroller of the current screen display

Get the current screen display of the Viewcontroller, and then how to jump on how to jump.

-(Uiviewcontroller *) GETCURRENTVC

{

Uiviewcontroller *result = nil;

UIWindow * window = [[UIApplication sharedapplication] Keywindow];

if (window.windowlevel! = uiwindowlevelnormal)

{

Nsarray *windows = [[UIApplication sharedapplication] windows];

For (UIWindow * Tmpwin in Windows)

{

if (Tmpwin.windowlevel = = uiwindowlevelnormal)

{

window = Tmpwin;

Break

}

}

}

UIView *frontview = [[Window subviews] objectatindex:0];

ID nextresponder = [frontview Nextresponder];

if ([Nextresponder Iskindofclass:[uiviewcontroller class]])

result = Nextresponder;

Else

result = Window.rootviewcontroller;

return result;

}

iOS development--Get the viewcontroller of the current screen display