//快速添加一个视图控制器
#import <UIKit/UIKit.h>
@interface UITabBarController (ZJTabBarExtension)
-(UIViewController*)andViewController:(Class)cls title:(NSString*)title image:(NSString*)image;
@end
@implementation UITabBarController (ZJTabBarExtension)
-(UIViewController*)andViewController:(Class)cls title:(NSString*)title image:(NSString*)image
{
//cls 传入界面所对应的类型
// 创建视图控制器
UIViewController*vc=[[cls alloc]init];
vc.title=title;
UINavigationController*nc=[[UINavigationController alloc]initWithRootViewController:vc];
nc.tabBarItem.image=[UIImage imageNamed:image];
//添加到标签栏中
NSMutableArray *marr =[[NSMutableArray alloc]initWithArray:self.viewControllers];
[marr addObject:nc];
self.viewControllers=marr;
// 返回创建的视图控制器
return vc;
}
接着在需要添加标签控制器和导航控制器的视图中添加到delegate引入头文件
#import "AppDelegate.h"
#import "LimitViewController.h"
#import "FreeViewController.h"
#import "SaleViewController.h"
#import "TopicViewController.h"
#import "HotViewController.h"
#import "UITabBarController+ZJTabBarExtension.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
// 创建导航栏和标签栏
[self creatTabBar];
return YES;
}
-(void)creatTabBar
{
// AppList()
// Limit(AppList)
// Sale(AppList)
// Free(AppList)
// Topic(Root)
// Hot(AppList)
／／以前的繁琐方法
// LimitViewController*lvc=[[LimitViewController alloc]init];
//// lvc.navigationItem.title=
//// lvc.navigationItem.image=
// UINavigationController*nc =[[UINavigationController alloc]initWithRootViewController:lvc];
－现在的方法
UITabBarController *tbc=[[UITabBarController alloc]init];
[tbc andViewController:[LimitViewController class] title:@"限免" image:@"tabbar_limitfree.png"];
[tbc andViewController:[SaleViewController class] title:@"降价" image:@"tabbar_reduceprice.png"];
[tbc andViewController:[FreeViewController class] title:@"免费" image:@"tabbar_appfree.png"];
[tbc andViewController:[TopicViewController class] title:@"专题" image:@"tabbar_subject.png"];
[tbc andViewController:[HotViewController class] title:@"热榜" image:@"tabbar_rank.png"];
self.window.rootViewController=tbc;
self.window.backgroundColor=[UIColor whiteColor];
代码量大大减少
}