IOS_NavigationBar full transparency, ios_navigationbar

IOS_NavigationBar full transparency, ios_navigationbar

First:

1. First, set a pure transparent png image as the background of navigationBar.

[Self. navigationController. navigationBarsetBackgroundImage: [UIImageimageNamed: @ "-1.png"] forBarMetrics: UIBarMetricsDefault];

2. After executing the above line of code, it is found that the navigationBar is set to transparent, but there is a line below the Bar ". That is.

To achieve thorough transparency, you need to add a few lines of code:

If ([self. navigationController. navigationBarrespondsToSelector: @ selector (setBackgroundImage: forBarMetrics :)]) {

NSArray * list = self. navigationController. navigationBar. subviews;

For (id objin list ){

If ([obj isKindOfClass: [UIImageViewclass]) {

UIImageView * imageView = (UIImageView *) obj;

ImageView. hidden = YES;

}

}

}

If you have any questions, please leave a message ~