#import 
     
          //自定义状态栏，状态栏显示灰色背景并【indicator message】。用于耗时操作的状态栏信息提示    //例如：访问网络时，提示正在获取网络数据，或者正在提交数据至服务器等提示    @interface CHStatusBar : UIWindow {    @private            UILabel *lblStatus;            UIActivityIndicatorView *indicator;    }    -(void)showWithStatusMessage:(NSString*)msg;    -(void)hide;    @end
     

 

#import "CHStatusBar.h"    @implementation CHStatusBar     - (id) initWithFrame:(CGRect)frame{    if (self = [super initWithFrame:frame]) {    // 将窗体置于正确的位置和级别，就是比状态栏的级别稍高即可    // 否则该窗体会被标准状态栏遮住，相当于web开发的zoom                self.windowLevel = UIWindowLevelStatusBar + 1.0f;    // 使窗体的框架和状态栏框架一致                self.frame = [UIApplication sharedApplication].statusBarFrame;    // 创建一个灰色图片背景，使他视觉上还是一个标准状态栏的感觉                UIImageView* backgroundImageView = [[UIImageView alloc] initWithFrame:self.frame];                backgroundImageView.image = [[UIImage imageNamed:@"statusbar_background.png"] stretchableImageWithLeftCapWidth:2 topCapHeight:0];                [self addSubview:backgroundImageView];                [backgroundImageView release];    //创建一个progress    indicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];                indicator.frame = (CGRect) {                    .origin.x = 2.0f,                     .origin.y = 3.0f,                     .size.width = self.frame.size.height - 6,                     .size.height = self.frame.size.height - 6    };    indicator.hidesWhenStopped = YES;    [self addSubview:indicator];    //文字信息，用于和用户进行交互，最好能提示用户当前是什么操作                lblStatus = [[UILabel alloc] initWithFrame:(CGRect){.origin.x = self.frame.size.height, .origin.y = 0.0f, .size.width = 200.0f, .size.height = self.frame.size.height}];                lblStatus.backgroundColor = [UIColor clearColor];                lblStatus.textColor = [UIColor blackColor];                lblStatus.font = [UIFont boldSystemFontOfSize:10.0f];                [self addSubview:lblStatus];                    }    return self;    }    - (void) showWithStatusMessage:(NSString*) msg {    if (!msg) return;            lblStatus.text = msg;            [indicator startAnimating];            self.hidden = NO;    }    - (void) hide {            [indicator stopAnimating];            self.hidden = YES;     }     - (void) dealloc {            [lblStatus release];            [indicator release];            [super dealloc];    }    @end

自定义状态栏就搞定了。