所謂適配器模式挽拂，通俗來講就是比如每一個(gè)國家都有自己的電壓和頻率芦鳍，中國大陸是 220V 和50Hz 各拷，中國香港是230V和50Hz.這時(shí)就需要用到適配形病，在代碼中我們也同樣會用到磷脯，使用適配器可以解決不一致問題蛾找，讓代碼更有擴(kuò)展性，可以降低數(shù)據(jù)層與視圖成的耦合度赵誓。
- 創(chuàng)建抽象適配器對象
- 適配器與視圖層建立輸出聯(lián)系
- 適配器與數(shù)據(jù)層建立輸入聯(lián)系
- 類適配器與對象適配器
首先規(guī)范一個(gè)protocol
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@protocol AdapterProtocol <NSObject>
- (NSString *)name;
- (UIColor *)lineColor;
- (NSString *)phoneNumber;
@end
然后讓一個(gè)基類遵守該協(xié)議打毛，這里就相當(dāng)于一個(gè)接口
#import <Foundation/Foundation.h>
#import "AdapterProtocol.h"
@interface Adapter : NSObject<AdapterProtocol>
//輸入的數(shù)據(jù)
@property(nonatomic,weak)id inputData;
- (instancetype)initWithData:(id)inputData;
@end
定義一個(gè)類繼承于Adapter柿赊，這個(gè)類中實(shí)現(xiàn)了適配，但是同時(shí)達(dá)到了解耦的目的幻枉。
#import "SubviewAdapter.h"
#import "Model.h"
#import "Model2.h"
@implementation SubviewAdapter
#pragma mark- 重寫父類的方法
- (NSString *)name {
NSString *name ;
if ([self.inputData isKindOfClass:[Model class]]) {
Model *model = self.inputData;
name = model.name;
}else if ([self.inputData isKindOfClass:[Model2 class]]){
Model2 *model2 = self.inputData;
name = model2.name;
}
return name;
}
- (UIColor *)lineColor {
UIColor *lineColor;
if ([self.inputData isKindOfClass:[Model class]]) {
Model *model = self.inputData;
lineColor = model.lineColor;
}else if ([self.inputData isKindOfClass:[Model2 class]]){
Model2 *modal2 = self.inputData;
lineColor = modal2.lineColor;
}
return lineColor;
}
- (NSString *)phoneNumber{
NSString *phoneNum;
if ([self.inputData isKindOfClass:[Model class]]) {
Model *model = self.inputData;
phoneNum = model.phoneNum;
}else if ([self.inputData isKindOfClass:[Model2 class]]){
Model2 *model2 = self.inputData;
phoneNum = model2.phoneNum;
}
return phoneNum;
}
@end
其中Model和Model2是兩個(gè)對象碰声，用對象來賦值比直接數(shù)據(jù)賦值要更靈活直觀不易出錯(cuò)
以上其實(shí)都是實(shí)現(xiàn)了數(shù)據(jù)的輸入，現(xiàn)在需要把輸入的數(shù)據(jù)進(jìn)行賦值顯示出來
#import <UIKit/UIKit.h>
#import "AdapterProtocol.h"
@interface AdapterView : UIView
@property(nonatomic,copy)NSString *name;
@property(nonatomic,copy)NSString *phoneNum;
@property(nonatomic,strong) UIColor *lineColor;
//初始化 加載實(shí)現(xiàn)了AdapterProtocol協(xié)議的對象
- (void)initWithInputData:(id <AdapterProtocol>)inputData;
@end
#import "AdapterView.h"
@interface AdapterView ()
@property(nonatomic,strong)UILabel *nameLabel;
@property(nonatomic,strong)UILabel *phoneLabel;
@property(nonatomic,strong)UIView *lineView;
@end
@implementation AdapterView
- (instancetype)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame]) {
}
return self;
}
- (void)setupUI{
self.backgroundColor = [UIColor whiteColor];
self.layer.borderWidth = 0.5f;
self.layer.shadowOpacity = 0.5f;
self.layer.shadowOffset = CGSizeMake(5, 5);
self.layer.shadowRadius = 1.f;
self.layer.shadowColor = [UIColor grayColor].CGColor;
//name
self.nameLabel = [[UILabel alloc] initWithFrame:CGRectMake(15, 10, 150, 25)];
self.nameLabel.font = [UIFont fontWithName:@"Avenir-Light" size:20.f];
self.nameLabel.text = self.name;
[self addSubview:self.nameLabel];
//lineView
self.lineView = [[UIView alloc] initWithFrame:CGRectMake(0, 45, 200, 5)];
self.lineView.backgroundColor = self.lineColor;
[self addSubview:self.lineView];
//phoneLabel
self.phoneLabel = [[UILabel alloc] initWithFrame:CGRectMake(41, 105, 150, 20)];
self.phoneLabel.textAlignment = NSTextAlignmentRight;
self.phoneLabel.font = [UIFont fontWithName:@"AvenirNext-UltraLightItalic" size:16.f];
self.phoneLabel.text = self.phoneNum;
[self addSubview:self.phoneLabel];
}
- (void)initWithInputData:(id <AdapterProtocol>)inputData{
self.name = [inputData name];
self.lineColor = [inputData lineColor];
self.phoneNum = [inputData phoneNumber];
[self setupUI];
}
@end
最后在主控制器中寫上邏輯代碼
Model *model = [[Model alloc]init];
model.name = @"John";
model.phoneNum = @"372-432-11";
model.lineColor = [UIColor lightGrayColor];
//輸入的數(shù)據(jù)源
SubviewAdapter *subAdapter = [[SubviewAdapter alloc]initWithData:model];
//輸出
AdapterView *adapterView = [[AdapterView alloc]initWithFrame:CGRectMake(0, 0, 200, 130)];
adapterView.center = self.view.center;
[adapterView initWithInputData:subAdapter];
[self.view addSubview:adapterView];
總結(jié)來說也就是：
- 首先定義一個(gè)公共的接口（吃熬甫，跑）
- 讓一個(gè)基類去實(shí)現(xiàn)這些接口（吃胰挑，跑）
- 創(chuàng)建一個(gè)子類繼承與上面的基類，這里面重寫接口的方法椿肩。（怎么吃洽腺，怎么跑），如果想要增加新的功能覆旱，就只需要在子類中新增一個(gè)方法（飛）蘸朋，就跟適配器一樣，只要有不同的頻率和電壓出現(xiàn)扣唱，額外新增一個(gè)就OK了藕坯。
- 把輸入的數(shù)據(jù)賦值 跟
tableViewCell賦值的方法一樣
