2018最新的设置导航栏透明和渐变色方法,只要一行代码
在你的baseVC中添加如下代码:
#pragma mark 导航栏颜色
//设置导航栏透明
//导航栏渐变色
-(void)setNavigationBarColor:(UIColor *)color alpha:(double)alpha{
[self.navigationController.navigationBar setBarTintColor:[color colorWithAlphaComponent:alpha]];//主题色
//这里包含了一个大的背景imageView 和一个底线imageView
NSArray *barBackgroundSubViews = [[[self.navigationController.navigationBar subviews] objectAtIndex:0] subviews];
for (UIView *subview in barBackgroundSubViews) {
subview.alpha = alpha;
// subview.backgroundColor = color;
}
}
OK,大功告成！
接下来，在需要的页面里添加下面的代码ok了
#pragma mark -life cycle
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
self.navigationController.navigationBar.translucent = YES;
//导航栏透明
[self setNavigationBarColor:[UIColor clearColor] alpha:0.00];
//修改导航栏的颜色
[self scrollViewDidScroll:self.collectionView];
}
-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
self.navigationController.navigationBar.translucent = NO;
//导航栏主题色
[self setNavigationBarColor:k_themeColor alpha:1.00];
}
