ios 中UIViewController的分类

最新推荐文章于 2024-09-30 13:39:08 发布

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最新推荐文章于 2024-09-30 13:39:08 发布

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CC 4.0 BY-SA版权

文章标签：移动开发人工智能

原文链接：http://www.cnblogs.com/gcb999/p/3229745.html

本文介绍了一种在iOS应用中自定义导航栏的方法，通过在UIViewController中扩展实现，包括设置背景图片、添加返回按钮及标题标签等，并实现了屏幕适配。

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#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(0, 0, self.view.bounds.size.width, 44)];
    tpNavView.tag = TOPVIEWTAG;
    [self.view addSubview:tpNavView];
    [tpNavView release];

    
    UIImageView *navImageView = [UIImageView ImageViewImageName:@"top_navigation_image.png" frame:tpNavView.bounds];
    navImageView.tag = 10010;
    [tpNavView addSubview:navImageView];
    

    
    UILabel *label = [UILabel LabWithFrame:tpNavView.bounds text:self.title textColor:[UIColor whiteColor] textAlign:NSTextAlignmentCenter font:[UIFont boldSystemFontOfSize:22]];
    [tpNavView addSubview:label];
    label.tag=10020;
    UIButton *back = [UIButton ButtonWithImageName:@"btn_back_image.png" hImageName:@"btn_back_image.png" frame:CGRectMake(5, 6, 45, 32)
                                             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(0, 0, self.view.bounds.size.width, 44);
    
    UIImageView *image = ASDynamicCast(UIImageView, [topView viewWithTag:10010]);
    image.frame = topView.bounds;
    UILabel *tLab = ASDynamicCast(UILabel, [topView viewWithTag:10020]);
    tLab.frame = topView.bounds;
    
    UIButton *back = ASDynamicCast(UIButton, [topView viewWithTag:0x404]);
    back.frame = CGRectMake(5, 6, 45, 32);
}

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

-(CGRect)CGRectMake{
    CGRect topViewRec,bottonViewRec;
    CGRectDivide(self.view.bounds, &topViewRec, &bottonViewRec, 44, CGRectMinYEdge);
    return bottonViewRec;
}


-(void)showMessage:(NSString*)message{
    if ([message length] > 0) {
        UIAlertView *av = [[UIAlertView alloc] initWithTitle:nil message:message delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
        [av show];
        [av release];
    }

}



@end