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UINavigationBar自定义导航栏背景…

2013-12-20 13:00 253 查看
UINavigationBar自定义导航栏背景和按钮，完美支持横屏竖屏旋转，视图控制器可以分别使用自己的导航栏

导航上的按钮背景需要做，否则看起来不那么和之又谐

Objective-c代码

//CustomNavigationBar.h

@interface UINavigationBar (UINavigationBarCategory)

UIImageView *backgroundView;

- (void)setBackgroundImage:(UIImage*)image;

- (void)insertSubview:(UIView *)view
atIndex:(NSInteger)index;

@end

//CustomNavigationBar.m

@implementation UINavigationBar (UINavigationBarCategory)

-(void)setBackgroundImage:(UIImage*)image

{

if(image == nil)

{

[backgroundView removeFromSuperview];

}

else

{

backgroundView = [[UIImageView alloc] initWithImage:image];

backgroundView.tag = 1;

backgroundView.frame = CGRectMake(0.f, 0.f, self.frame.size.width,
self.frame.size.height);

backgroundView.autoresizingMask = UIViewAutoresizingFlexibleWidth |
UIViewAutoresizingFlexibleHeight;

[self addSubview:backgroundView];

[self sendSubviewToBack:backgroundView];

[backgroundView release];

}

}

//for other views

- (void)insertSubview:(UIView *)view atIndex:(NSInteger)index

{

[super insertSubview:view atIndex:index];

[self sendSubviewToBack:backgroundView];

}

@end

//YourViewController.m

- (void)viewWillAppear:(BOOL)animated

{

[super viewWillAppear:animated];

[self.navigationController.navigationBar

setBackgroundImage:[UIImage
imageNamed:@"navigation_bar_bg.png"]];

}

 
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