IOS5修改UIToolBar 和UINavigationBar 的背景颜色

UIToolBar 三种办法

方法一

/toolBarbackgroundimagesetbasedoniOSversion
[[UIDevicecurrentDevice]systemVersion];

if([[[UIDevicecurrentDevice]systemVersion]floatValue]>4.9){

//iOS5
UIImage*toolBarIMG=[UIImageimageNamed:@"toolBar_brown.png"];

if([toolBarrespondsToSelector:@selector(setBackgroundImage:forToolbarPosition:barMetrics:)]){
[toolBarsetBackgroundImage:toolBarIMGforToolbarPosition:0barMetrics:0];
}

}else{

//iOS4
[toolBarinsertSubview:[[[UIImageViewalloc]initWithImage:[UIImageimageNamed:@"toolBar_brown.png"]]autorelease]atIndex:0];

}

方法二

//MyToolBar.h

#import<UIKit/UIKit.h>
@interfaceMyToolBar:UIToolbar{

}
@end

//MyToolBar.m
#import"MyToolBar.h"
@implementationMyToolBar

-(void)drawRect:(CGRect)rect{
CGContextRefc=UIGraphicsGetCurrentContext();
UIImage*image=[UIImageimageNamed:@"fish.png"];
CGContextDrawImage(c,rect,image.CGImage);
}
@end

方法三

-(void)drawRect:(CGRect)rect
{

UIImage*img=[[[UIImagealloc]initWithContentsOfFile:[[NSBundlemainBundle]pathForResource:@"ToolbarBk"ofType:@"png"]]autorelease];
[imgdrawInRect:CGRectMake(0,0,self.frame.size.width,self.frame.size.height)];

}

UINavigationBar

在APPDelegate添加

@implementationUINavigationBar(UINavigationBarCategory)
-(void)drawRect:(CGRect)rect{
UIImage*img=[UIImageimageNamed:@"navbar.png"];
[imgdrawInRect:rect];
}

@end

if([self.navigationController.navigationBarrespondsToSelector:@selector(setBackgroundImage:forBarMetrics:)]){

[self.navigationController.navigationBarsetBackgroundImage:[UIImageimageNamed:@"navbar.png"]forBarMetrics:UIBarMetricsDefault];
}