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为什么UINavigationBar backButton在iOS7中设置其背景图像后消失？_Ios7_Uinavigationbar_Background Image_Back Button - Fatal编程技术网
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  • 为什么UINavigationBar backButton在iOS7中设置其背景图像后消失？

为什么UINavigationBar backButton在iOS7中设置其背景图像后消失？

ios7

为什么UINavigationBar backButton在iOS7中设置其背景图像后消失？,ios7,uinavigationbar,background-image,back-button,Ios7,Uinavigationbar,Background Image,Back Button,在我为backButton图像设置backgroundImage之后，它将消失 但当我点击它一次，它会再次出现 UIImage *barBackBtnImg = [[UIImage imageNamed:@"btn_back"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 0, 0, 0)]; [self.navigationController.navigationBar setBackIndicatorImage:barBackBtnImg

在我为backButton图像设置backgroundImage之后，它将消失

但当我点击它一次，它会再次出现

UIImage *barBackBtnImg = [[UIImage imageNamed:@"btn_back"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 0, 0, 0)];
[self.navigationController.navigationBar setBackIndicatorImage:barBackBtnImg];
[self.navigationController.navigationBar setBackIndicatorTransitionMaskImage:barBackBtnImg];