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na.topViewController 和 na.visib

na.topViewController 和 na.visib

作者: __May__ | 来源:发表于2019-04-23 19:47 被阅读0次

UINavigationController *na
na.rootVC = vcA;
vcA push vcB;
vcB present vcC;
vcC present vcD;

这时
na.topViewController = vcB;
na.visibleViewController = vcC;
vcD.presentedViewController = nil;
vcD.presentingViewController = vcC;

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