ios 中UIViewController的分类

#import <UIKit/UIKit.h>

#define TOPVIEWTAG 0x10000  // 导航栏的图片

@interface UIViewController (Chnbs)

-(void)setupTopNavigationView;
-(void)resizeNavigationView;

-(CGRect)CGRectMake;

-(void)showMessage:(NSString*)message;

@en
======================
@implementation UIViewController (Chnbs)

-(void)setupTopNavigationView{
    self.navigationController.navigationBarHidden = YES;
    UIView *tpNavView = [[UIView alloc] initWithFrame:CGRectMake(, , self.view.bounds.size.width, )];
    tpNavView.tag = TOPVIEWTAG;
    [self.view addSubview:tpNavView];
    [tpNavView release];

    UIImageView *navImageView = [UIImageView ImageViewImageName:@"top_navigation_image.png" frame:tpNavView.bounds];
    navImageView.tag = ;
    [tpNavView addSubview:navImageView];

    UILabel *label = [UILabel LabWithFrame:tpNavView.bounds text:self.title textColor:[UIColor whiteColor] textAlign:NSTextAlignmentCenter font:[UIFont boldSystemFontOfSize:]];
    [tpNavView addSubview:label];
    label.tag=;
    UIButton *back = [UIButton ButtonWithImageName:@"btn_back_image.png" hImageName:@"btn_back_image.png" frame:CGRectMake(, , , )
                                             title:nil titleColor:nil font:nil target:self action:@selector(backButtonAction:)];
    back.tag = 0x404;
    [tpNavView addSubview:back];

    //FIX 添加导航的屏幕自动适配
    tpNavView.autoresizingMask=UIViewAutoresizingFlexibleRightMargin|UIViewAutoresizingFlexibleWidth;
    navImageView.autoresizingMask=UIViewAutoresizingFlexibleRightMargin|UIViewAutoresizingFlexibleWidth;
    label.autoresizingMask=UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin;
}

-(void)resizeNavigationView{
    UIView *topView = ASDynamicCast(UIView, [self.view viewWithTag:TOPVIEWTAG]);
    topView.frame = CGRectMake(, , self.view.bounds.size.width, );

    UIImageView *image = ASDynamicCast(UIImageView, [topView viewWithTag:]);
    image.frame = topView.bounds;
    UILabel *tLab = ASDynamicCast(UILabel, [topView viewWithTag:]);
    tLab.frame = topView.bounds;

    UIButton *back = ASDynamicCast(UIButton, [topView viewWithTag:0x404]);
    back.frame = CGRectMake(, , , );
}

-(void)backButtonAction:(id)sender{
    [self.navigationController popViewControllerAnimated:YES];
}

-(CGRect)CGRectMake{
    CGRect topViewRec,bottonViewRec;
    CGRectDivide(self.view.bounds, &topViewRec, &bottonViewRec, , CGRectMinYEdge);
    return bottonViewRec;
}

-(void)showMessage:(NSString*)message{
    if ([message length] > ) {
        UIAlertView *av = [[UIAlertView alloc] initWithTitle:nil message:message delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
        [av show];
        [av release];
    }

}

@end