在做輪播圖的時候,有點輪播圖展示的是廣告,有的是活動,等等還有其他的
當前點擊某個輪播的時候要跳轉到不同的控制器,點擊事件是在控制器寫的,爲了避免控制器代碼過多,顯示的臃腫
我創建了一個UIWindow的分類,暫且叫Model (GetCurrentVC)
谷歌還有很多方法,我這個方法親測有效,其他方法後續再測試
一:
@interface UIWindow (GetCurrentVC)
- (UIViewController *)getCurrentVC;
@end
二:
#import "UIWindow+GetCurrentVC.h"
@implementation UIWindow (GetCurrentVC)
- (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;
}
@end