#import "UINavigationBar+CustomImage.h"

@implementation UINavigationBar (CustomImage)

-(UIImage *)drawImage:(NSString *)imageName

{

    UIImage *image = [UIImageimageNamed:imageName];

    CGSize ssySize = CGSizeMake(320, (IOS_VERSION_7)?64:44);

    UIGraphicsBeginImageContext(ssySize);

    [image drawInRect:CGRectMake(0, 0, ssySize.width, ssySize.height)];

    UIImage *reImage = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    return reImage;

}

- (UIImage *)barBackground

{

    return [UIImageimageNamed:@"live_bg_yellow.png"];

}

- (void)didMoveToSuperview

{

    //iOS5 only

    if ([selfrespondsToSelector:@selector(setBackgroundImage:forBarMetrics:)])

    {

        [selfsetBackgroundImage:[selfdrawImage:@"live_bg_yellow.png"] forBarMetrics:UIBarMetricsDefault];

        // 自定义导航栏字体颜色大小

        [selfsetTitleTextAttributes:@{

                                       NSForegroundColorAttributeName: [UIColorredColor],

                                       NSFontAttributeName: [UIFontboldSystemFontOfSize:14],

                                       }];

//        [[UINavigationBar appearance] setTitleTextAttributes:@{

//                                       NSForegroundColorAttributeName: [UIColor redColor],

//                                       NSFontAttributeName: [UIFont boldSystemFontOfSize:14],

//                                       }];

    }

}

//this doesn‘t work on iOS5 but is needed for iOS4 and earlier

- (void)drawRect:(CGRect)rect

{

    //draw image

    [[selfbarBackground] drawInRect:rect];

}

@end

自定义导航栏图片 & 适配 (类别)