IOS 设置导航栏全局样式

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// 1.设置导航栏背景

UINavigationBar *bar = [UINavigationBar appearance];

[bar setBackgroundImage:[UIImage resizeImage:@"NavigationBar_Background.png"] forBarMetrics:UIBarMetricsDefault];

// 状态栏

[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleBlackOpaque;

// 2.设置导航栏文字属性

NSMutableDictionary *barAttrs = [NSMutableDictionary dictionary];

[barAttrs setObject:[UIColor darkGrayColor] forKey:UITextAttributeTextColor];

[barAttrs setObject:[NSValue valueWithUIOffset:UIOffsetMake(0, 0)] forKey:UITextAttributeTextShadowOffset];

[bar setTitleTextAttributes:barAttrs];

// 3.按钮

UIBarButtonItem *item = [UIBarButtonItem appearance];

[item setBackgroundImage:[UIImage resizeImage:@"BarButtonItem_Normal.png"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];

[item setBackgroundImage:[UIImage resizeImage:@"BarButtonItem_Pressed.png"] forState:UIControlStateHighlighted barMetrics:UIBarMetricsDefault];

NSMutableDictionary *itemAttrs = [NSMutableDictionary dictionaryWithDictionary:barAttrs];

[itemAttrs setObject:[UIFont boldSystemFontOfSize:13] forKey:UITextAttributeFont];

[item setTitleTextAttributes:itemAttrs forState:UIControlStateNormal];

[item setTitleTextAttributes:itemAttrs forState:UIControlStateHighlighted];

[item setTitleTextAttributes:itemAttrs forState:UIControlStateDisabled];

// 4.返回按钮

[item setBackButtonBackgroundImage:[UIImage resizeImage:@"BarButtonItem_Back_Normal.png"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];

[item setBackButtonBackgroundImage:[UIImage resizeImage:@"BarButtonItem_Back_Pressed.png"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];

搞了半天，居然没有发现可以插入Objective-C代码的地方。真郁闷

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//

// UIImage+Fit.m

// SinaWeibo

//

// Created by mj on 13-8-19.

// Copyright (c) 2013年 itcast. All rights reserved.

//

#import "UIImage+Fit.h"

@implementation UIImage (Fit)

#pragma mark 返回拉伸好的图片

+ (UIImage *)resizeImage:(NSString *)imgName {

return [[UIImage imageNamed:imgName] resizeImage];

}

- (UIImage *)resizeImage

{

CGFloat leftCap = self.size.width * 0.5f;

CGFloat topCap = self.size.height * 0.5f;

return [self stretchableImageWithLeftCapWidth:leftCap topCapHeight:topCap];

}

- (UIImage *)cut:(CGSize)sizeScale

{

CGFloat width = self.size.width * sizeScale.width;

CGFloat height = self.size.height * sizeScale.height;

CGFloat x = (self.size.width - width) * 0.5;

CGFloat y = (self.size.height - height) * 0.5;

CGRect rect = CGRectMake(x, y, width, height);

CGImageRef ref = CGImageCreateWithImageInRect(self.CGImage, rect);

return [UIImage imageWithCGImage:ref];

}

@end