UINavigationBar自定义导航栏

 

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

此方法可以通过Apple审核，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  

1. //CustomNavigationBar.h   
2. @interface UINavigationBar (UINavigationBarCategory)   
3. UIImageView *backgroundView;   
4. - (void)setBackgroundImage:(UIImage*)image;   
5. - (void)insertSubview:(UIView *)view atIndex:(NSInteger)index;   
6. @end   
7.   
8. //CustomNavigationBar.m   
9. @implementation UINavigationBar (UINavigationBarCategory)   
10. -(void)setBackgroundImage:(UIImage*)image   
11. {   
12.     if(image == nil)   
13.     {   
14.         [backgroundView removeFromSuperview];   
15.     }   
16.     else   
17.     {   
18.         backgroundView = [[UIImageView alloc] initWithImage:image];   
19.         backgroundView.tag = 1;   
20.         backgroundView.frame = CGRectMake(0.f, 0.f, self.frame.size.width, self.frame.size.height);   
21.         backgroundView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;   
22.         [self addSubview:backgroundView];   
23.         [self sendSubviewToBack:backgroundView];   
24.         [backgroundView release];   
25.     }   
26. }   
27.   
28. //for other views   
29. - (void)insertSubview:(UIView *)view atIndex:(NSInteger)index   
30. {   
31.     [super insertSubview:view atIndex:index];   
32.     [self sendSubviewToBack:backgroundView];   
33. }   
34. @end   
35.   
36. //YourViewController.m   
37. - (void)viewWillAppear:(BOOL)animated   
38. {   
39.     [super viewWillAppear:animated];   
40.     [self.navigationController.navigationBar   
41.         setBackgroundImage:[UIImage imageNamed:@"navigation_bar_bg.png"]];   
42. }  

//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"]];
}

• CustomNavigationBar.zip (54.1 KB)