ios基础控件 九宫格view

//
//  MJViewController.m
//  01-应用管理
//
//  Created by apple on 14-3-26.
//  Copyright (c) 2014年 itcast. All rights reserved.
//控制器

#import "MJViewController.h"
#import "MJApp.h"
#import "MJAppView.h"

@interface MJViewController ()
/** 存放应用信息 */
@property (nonatomic, strong) NSArray *apps;
@end

@implementation MJViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    // 添加应用信息
    
    // 0.总列数(一行最多3列)
    int totalColumns = 3;
    
    // 1.应用的尺寸
    CGFloat appW = 85;
    CGFloat appH = 90;
    
    // 2.间隙 = (控制器view的宽度 - 3 * 应用宽度) / 4
    CGFloat marginX = (self.view.frame.size.width - totalColumns * appW) / (totalColumns + 1);
    CGFloat marginY = 15;
    
    // 3.根据应用个数创建对应的框框(index 0 ~ 11)
    for (int index = 0; index<self.apps.count; index++) {
        // 3.1.创建view
        MJAppView *appView = [MJAppView appViewWithApp:self.apps[index]];
        
        // 3.2.添加view
        [self.view addSubview:appView];
        
        // 3.3.设置frame
        int row = index / totalColumns;
        int col = index % totalColumns;
        // 计算x和y
        CGFloat appX = marginX + col * (appW + marginX);
        CGFloat appY = 30 + row * (appH + marginY);
        appView.frame = CGRectMake(appX, appY, appW, appH);
        
        // 3.4.设置数据
//        appView.app = self.apps[index];
    }
}

- (NSArray *)apps
{
    if (_apps == nil) {
        // 初始化
        
        // 1.获得plist的全路径
        NSString *path = [[NSBundle mainBundle] pathForResource:@"app.plist" ofType:nil];
        
        // 2.加载数组
        NSArray *dictArray = [NSArray arrayWithContentsOfFile:path];
        
        // 3.将dictArray里面的所有字典转成模型对象,放到新的数组中
        NSMutableArray *appArray = [NSMutableArray array];
        for (NSDictionary *dict in dictArray) {
            // 3.1.创建模型对象
            MJApp *app = [MJApp appWithDict:dict];
            
            // 3.2.添加模型对象到数组中
            [appArray addObject:app];
        }
        
        // 4.赋值
        _apps = appArray;
    }
    return _apps;
}

@end

//
//  MJApp.m
//  01-应用管理
//
//  Created by apple on 14-3-26.
//  Copyright (c) 2014年 itcast. All rights reserved.
//  数据模型

#import "MJApp.h"

@implementation MJApp
- (instancetype)initWithDict:(NSDictionary *)dict
{
    if (self = [super init]) {
        self.name = dict[@"name"];
        self.icon = dict[@"icon"];
    }
    return self;
}

+ (instancetype)appWithDict:(NSDictionary *)dict
{
    return [[self alloc] initWithDict:dict];
}
@end////  MJAppView.m//  01-应用管理

//
//  Created by apple on 14-3-26.
//  Copyright (c) 2014年 itcast. All rights reserved.
//  
  如果一个view内部的子控件比较多，一般会考虑自定义一个view，把它内部子控件的创建屏蔽起来，不让外界关心 
  外界可以传入对应的模型数据给view，view拿到模型数据后给内部的子控件设置对应的数据

#import "MJAppView.h"
#import "MJApp.h"

@interface MJAppView()
@property (weak, nonatomic) IBOutlet UIImageView *iconView;
@property (weak, nonatomic) IBOutlet UILabel *nameLabel;
@end

@implementation MJAppView

//+ (instancetype)appView
//{
//    NSBundle *bundle = [NSBundle mainBundle];
//    // 读取xib文件(会创建xib中的描述的所有对象,并且按顺序放到数组中返回)
//    NSArray *objs = [bundle loadNibNamed:@"MJAppView" owner:nil options:nil];
//    return [objs lastObject];
//}
//
//+ (instancetype)appViewWithApp:(MJApp *)app
//{
//    MJAppView *appView = [self appView];
//    appView.app = app;
//    return appView;
//}

+ (instancetype)appViewWithApp:(MJApp *)app
{
    NSBundle *bundle = [NSBundle mainBundle];
    // 读取xib文件(会创建xib中的描述的所有对象,并且按顺序放到数组中返回)
    NSArray *objs = [bundle loadNibNamed:@"MJAppView" owner:nil options:nil];
    MJAppView *appView = [objs lastObject];
    appView.app = app;
    return appView;
}

+ (instancetype)appView
{
    return [self appViewWithApp:nil];
}

- (void)setApp:(MJApp *)app
{
    _app = app;
    
    // 1.设置图标
    self.iconView.image = [UIImage imageNamed:app.icon];
    
    // 2.设置名称
    self.nameLabel.text = app.name;
}

@end