liukuiqing/my-code

遇到的一些问题和解决方法

my-code's Issues

导航栏颜色问题

//加一张透明的图片
[self.navigationController.navigationBar setBackgroundImage:[UIImage new]
forBarPosition:UIBarPositionAny
barMetrics:UIBarMetricsDefault];
// 下面1px的线
[self.navigationController.navigationBar setShadowImage:[UIImage new]];

CGRect frame = self.navigationController.navigationBar.frame;

UIView * alphaView = [[UIView alloc] initWithFrame:CGRectMake(0, -20, frame.size.width, frame.size.height+20)];
alphaView.backgroundColor = [[UIColor blueColor] colorWithAlphaComponent:0.5];
alphaView.userInteractionEnabled = NO;
// 必须要把这个alphaView的交互关掉，不然push到下一界面后导航栏的按钮不会响应事件
[self.navigationController.navigationBar insertSubview: alphaView atIndex:0];

// 然后就可以通过改变alphaview 来改变导航栏的颜色