iOS开发笔记--去掉Navigation下方的黑线(分割线)

[objc] view
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if ([self.navigationController.navigationBar respondsToSelector:@selector( setBackgroundImage:forBarMetrics:)]){

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

for (id obj in list) {

if ([obj isKindOfClass:[UIImageView class]]) {

UIImageView *imageView=(UIImageView *)obj;

NSArray *list2=imageView.subviews;

for (id obj2 in list2) {

if ([obj2 isKindOfClass:[UIImageView class]]) {

UIImageView *imageView2=(UIImageView *)obj2;

imageView2.hidden=YES;

}

}

}

}

}