用plist建立UITabController

      建立UITabController时，将几个uiviewcontroller初始化后放入数组，然后通过UITabController进行串联。但是在初始化uiviewcongroller和配置控件的时候会出现很多重复的代码，对后期的维护会带来很多不便。因此通过建立一个plist文件，通过model来优化代码。

      1.建立一个plist文件，在文件中添加相关控件的名称。

      2.在model中将plist文件中的控件名取出来并赋值。

      3.在UITabController中初始化model，引入各uiviewcontroller。

第一步：

第二步：

#import "BaseInfo.h"
#import <UIKit/UIKit.h>
@interface PageInfo : BaseInfo
@property (nonatomic,strong)NSString *image;
@property (nonatomic,strong)NSString *SelectedImage;

+(NSArray *)pageControllers;

@end

#import "PageInfo.h"

@implementation PageInfo
//通过类方法，将传来的NSDictionary中相应的元素解析出来，返回解析出来的model
+(PageInfo *)infoFromDict:(NSDictionary *)dict
{
    PageInfo *info = [[PageInfo alloc]init];
    info.ID = [dict valueForKey:@"Class Name"];
    info.name = [dict valueForKey:@"Title"];
    info.image = [dict valueForKey:@"Image"];
    info.SelectedImage = [dict valueForKey:@"SelectedImage"];
    return info;
}
+(NSArray *)pages
{
    //找到建立的plist文件路径
    NSString *confile = [[NSBundle mainBundle]pathForResource:@"HomeList" ofType:@"plist"];
    //将plist文件中定义的NSArray拿到
    NSArray *pageConfign = [NSArray arrayWithContentsOfFile:confile];
    NSMutableArray *pages = [[NSMutableArray alloc]init];
    
    if (pageConfign.count <= 0) {
        NSLog(@"NO LIST");
    }
    //遍历plist文件中的Array，并将数组中的字典解析并配置为model，然后将配置好的model添加到可变数组中，返回可变数组
    for (NSDictionary *dict in pageConfign) {
        [pages addObject:[PageInfo infoFromDict:dict]];
    }
    return pages;
}
+(NSArray *)pageControllers
{
    //取到pages方法中返回的数组
    NSMutableArray *controllers = [NSMutableArray array];
    NSArray *page = [PageInfo pages];
    UIViewController *pageController = nil;
    UINavigationController *napage = nil;
    //将取到的数组将model中定义的各类，赋值给相应的控件，返回
    for (PageInfo *pageInfo in page) {
        pageController = [[NSClassFromString(pageInfo.ID) alloc]init];
        napage = [[UINavigationController alloc]initWithRootViewController:pageController];
        pageController.title = pageInfo.name;
        pageController.tabBarItem.image = [UIImage imageNamed:pageInfo.image];
        pageController.tabBarItem.selectedImage = [UIImage imageNamed:pageInfo.SelectedImage];
        [controllers addObject:napage];
    }
    return controllers;
}
@end

第三步

@implementation HomePage

-(instancetype)init{
    self = [super init];
    if (self) {
        [self addTabController];
    }
    return self;
}
-(void)viewDidLoad{
    [super viewDidLoad];

}
-(void)addTabController
{
    
    self.tabBar.tintColor = [UIColor redColor];
    self.viewControllers = [PageInfo pageControllers];
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

@end