(转) TabBar/NavBar/Toolbar 自定义背景

方法一

 @implementation UINavigationBar (UINavigationBarCategory)
 - (void)drawRect:(CGRect)rect {
         //加入旋转坐标系代码
     // Drawing code       
         UIImage *navBarImage = [UIImage imageNamed:@"navibar.png"];
         CGContextRef context = UIGraphicsGetCurrentContext();
         CGContextTranslateCTM(context, 0.0, self.frame.size.height);
         CGContextScaleCTM(context, 1.0, -1.0);       
        
         CGPoint center=self.center;


         CGImageRef cgImage= CGImageCreateWithImageInRect(navBarImage.CGImage, CGRectMake(0, 0, 1, 44));
         CGContextDrawImage(context, CGRectMake(center.x-160-80, 0, 80, self.frame.size.height), cgImage);
         CGContextDrawImage(context, CGRectMake(center.x-160, 0, 320, self.frame.size.height), navBarImage.CGImage);
         CGContextDrawImage(context, CGRectMake(center.x+160, 0, 80, self.frame.size.height), cgImage);CGImageRelease(cgImage);
 }
@end

 

方法二

UINavigationController *navi =。。。。

        UIImage *image = [UIImage imageNamed:@"navibar.jpg"];
        UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
        [navi.navigationBar addSubview:imageView];
        [navi.navigationBar sendSubviewToBack:imageView];
        [imageView release];

 

ios 5 

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 50000
    if ([self.navigationController.navigationBar respondsToSelector:@selector(setBackgroundImage:forBarMetrics:)]){
        CLog(@"111");
            [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"navi.png"] forBarMetrics:UIBarMetricsDefault];
    }
#endif

 

方法三，没成功

+ (UIColor *)colorWithPatternImage:(UIImage *)image; //也就是说其实UIColor可以表示的不仅仅是纯色，也可以是一张图片 


 
UIImage *navBarImage = [UIImage imageNamed:@"LOGO_320×44.png"];
UIColor *backgroundColor = [UIColor colorWithPatternImage: navBarImage];//因为是pattern的缘故，所以最好提供和bar一样大小的图片。
UINavigationBar.backgroundColor = backgroundColor;