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listenzz / HBDNavigationBar

A custom UINavigationBar for smooth switching between various states, including bar style, bar tint color, background image, background alpha, bar hidden, title text attributes, tint color, shadow hidden...
MIT License
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导航栏背景透明度随 UIScrollView 滚动变化 #98

Open wangyxy opened 4 years ago

wangyxy commented 4 years ago

刚进界面，在viewDidload,设置[self setHbd_barAlpha:0]，导航栏变成完全透明了。随后，滚动视图时，再次设置[self setHbd_barAlpha:1]。结果，导航栏还是全透明，没有变。请问，这是怎么回事

listenzz commented 4 years ago

参考 https://github.com/listenzz/HBDNavigationBar/blob/master/Example/HBDNavigationBar/YPGradientDemoViewController.m#L158

wangyxy commented 4 years ago

恩恩，已解决问题。主要是还需要一句代码设置， [self hbd_setNeedsUpdateNavigationBar];