设计模式 - 适配器
适配器也叫接口适配，其目的是为了减少不同类型数据之间的耦合度而进行的数据转换，有利于减少冗余代码。
源码如下：
ModelCell.h 与 ModelCell.m
//
// ModelCell.h
// Adapter
//
// Created by YouXianMing on 15/1/6.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface ModelCell : UITableViewCell
@property (nonatomic, strong) UILabel *name;
@property (nonatomic, strong) UILabel *age;
@end//
// ModelCell.m
// Adapter
//
// Created by YouXianMing on 15/1/6.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
//
#import "ModelCell.h"
@implementation ModelCell
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
self.name = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 200, 18)];
self.name.font = [UIFont boldSystemFontOfSize:16.f];
self.name.textColor = [UIColor redColor];
[self addSubview:self.name];
self.age = [[UILabel alloc] initWithFrame:CGRectMake(10, 18 + 10, 200, 14)];
self.age.font = [UIFont italicSystemFontOfSize:12.f];
self.age.textColor = [UIColor blackColor];
[self addSubview:self.age];
}
return self;
}
@endAdapterModel.h 与 AdapterModel.m
//
// AdapterModel.h
// Adapter
//
// Created by YouXianMing on 15/1/6.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface AdapterModel : NSObject
@property (nonatomic, strong) NSString *name;
@property (nonatomic, strong) NSString *age;
/**
* 根据字典来初始化
*
* @param dic model字典
*
* @return 实例对象
*/
+ (instancetype)adapterWithDictionary:(NSDictionary *)dic;
/**
* 根据对象来初始化
*
* @param dic model字典
*
* @return 实例对象
*/
+ (instancetype)adapterWithObject:(id)object;
@end//
// AdapterModel.m
// Adapter
//
// Created by YouXianMing on 15/1/6.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
//
#import "AdapterModel.h"
@implementation AdapterModel
+ (instancetype)adapterWithDictionary:(NSDictionary *)dic {
AdapterModel *model = nil;
if (dic != nil && [dic isKindOfClass:[NSDictionary class]]) {
model = [AdapterModel new];
model.name = dic[@"name"];
model.age = dic[@"age"];
}
return model;
}
+ (instancetype)adapterWithObject:(id)object {
// 预留
return [AdapterModel new];
}
@end控制器源码：
//
// ViewController.m
// Adapter
//
// Created by YouXianMing on 15/1/6.
// Copyright (c) 2015年 YouXianMing. All rights reserved.
//
#import "ViewController.h"
#import "ModelCell.h"
#import "AdapterModel.h"
static NSString *ModelCellFlag = @"ModelCell";
@interface ViewController ()<UITableViewDataSource, UITableViewDelegate>
@property (nonatomic, strong) UITableView *tableView;
@property (nonatomic, strong) NSMutableArray *dataArray;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// 初始化数据源
[self createDataSource];
// 初始化tableView
[self createTableView];
}
#pragma mark - 数据源相关
- (void)createDataSource {
self.dataArray = [NSMutableArray array];
[self.dataArray addObject:[AdapterModel adapterWithDictionary:@{@"name": @"FireEmblem",
@"age" : @"40"}]];
[self.dataArray addObject:[AdapterModel adapterWithDictionary:@{@"name": @"YouXianMing",
@"age" : @"27"}]];
[self.dataArray addObject:[AdapterModel adapterWithDictionary:@{@"name": @"QiuLiang",
@"age" : @"28"}]];
[self.dataArray addObject:[AdapterModel adapterWithDictionary:@{@"name": @"PingKang",
@"age" : @"25"}]];
}
#pragma mark - tableView相关
- (void)createTableView {
self.tableView = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStylePlain];
self.tableView.delegate = self;
self.tableView.dataSource = self;
[self.tableView registerClass:[ModelCell class] forCellReuseIdentifier:ModelCellFlag];
[self.view addSubview:self.tableView];
}
#pragma mark row数量
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.dataArray.count;
}
#pragma mark cell初始化
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
ModelCell *cell = [tableView dequeueReusableCellWithIdentifier:ModelCellFlag];
AdapterModel *model = self.dataArray[indexPath.row];
cell.name.text = model.name;
cell.age.text = model.age;
return cell;
}
#pragma mark cell高度
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return 50;
}
@end以下是核心代码处：
