【碼農】從 Object-C 到 C#

benjenq11 月 14, 2017

CSharp_ObjC

最近手邊進行一項工程，要將 Object-C 的程式碼「移植」到 C# 的機器上。Object-C 是拿手的，但 C# 完全不熟啊～於是上網找了一些資料，練習嘗試設計一個小範例，用Object-C 與 C# 各寫了一份，體會其中的奧妙。

範例是設計一個類別 iPhone4S，用實例與單例宣告為物件並賦予預設值。

Object-C

iPhone4S.h
#import <Foundation/Foundation.h>

@interface iPhone4S : NSObject

@property (nonatomic,retain) NSString *simCode;

+ (instancetype)shareInstance;

- (NSString *)doCallOut:(NSString *)phoneNumber;

- (NSString *)handUp;

- (NSString *)volumeChanged:(NSInteger)volumeVal;

- (NSString *)doVibrate;

- (NSString *)doSiri:(NSString *)speakCommand;

@end

iPhone4S.m
#import "iPhone4S.h"

@implementation iPhone4S

static iPhone4S *theiPhone4s = nil;

- (instancetype)init{
    self = [super init];
    if (self) {
        self.simCode = @"0000";
    }
    return self;
}

+ (instancetype)shareInstance{
    @synchronized (theiPhone4s) {
        if (theiPhone4s == nil) {
            theiPhone4s = [[iPhone4S alloc] init];
        }
        else{
            NSLog(@"NOT NEW 新建iphone4S");
        }
    }
    return theiPhone4s;
}


- (NSString *)doCallOut:(NSString *)phoneNumber{
    NSLog(@"iOS打電話給%@",phoneNumber);
    return @"撥號中";
    
}

- (NSString *)handUp{
    NSLog(@"iOS將通話中電話結束");
    return @"結束通話";
}

- (NSString *)volumeChanged:(NSInteger)volumeVal{
    NSLog(@"iOS將音量調整為%li",(long)volumeVal);
    return @"完成調音量";
}

- (NSString *)doVibrate{
    NSLog(@"iOS將轉振動");
    return @"完成轉振動";
}

- (NSString *)doSiri:(NSString *)speakCommand{
    return [@"Siri說:" stringByAppendingString:speakCommand] ;
}

@end

iPhone4S.cs

using System;
public class iPhone4S
{
#region 宣告變數名稱
public string simCode { set; get; } //姓名
#endregion
private static readonly object locker = new object();
private static iPhone4S theiPhone4s = null;
/* 使用 private 則禁止從外部產生實例，用於Singleton
private iphone4S()
{
simcode = "0000";
Console.WriteLine("iphone4S 電話:" + phonenumber);
}
*/
public iPhone4S()
{
simCode = "0000";
}
public static iPhone4S shareInstance()
{
lock (locker)
{
if (theiPhone4s == null)
{
theiPhone4s = new iPhone4S();
}
else
{
Console.WriteLine("NOT NEW 新建iphone4S");
}
}
return theiPhone4s;
}
public string doCallOut(string phoneNumber)
{
Console.WriteLine("iOS打電話給" + phoneNumber);
return "撥號中";
}
public string handUp()
{
Console.WriteLine("iOS將通話中電話結束");
return "結束通話";
}
public string volumeChanged(int volumeVal)
{
Console.WriteLine("iOS將音量調整為" + volumeVal);
return "完成調音量";
}
public string doVibrate()
{
Console.WriteLine("iOS將轉振動");
return "完成轉振動";
}
public string doSiri(string speakCommand)
{
return "Siri說:" + speakCommand;
}
}

驗證：設計一個按鈕，print 結果

Object-C

-(IBAction)btnLogSimCode_Click:(id)sender{
    iPhone4S *myPhone = [[iPhone4S alloc] init];
    iPhone4S *companyPhone = [iPhone4S shareInstance];
    iPhone4S *companyPhone2 = [iPhone4S shareInstance];
    
    myPhone.simCode = @"1234";
    companyPhone2.simCode = @"5678";
    
    NSLog(@"myPhone 電話 Sim Code:%@" , myPhone.simCode);
    NSLog(@"companyPhone 電話 Sim Code:%@" , companyPhone.simCode);
    NSLog(@"companyPhone2 電話 Sim Code:%@" , companyPhone2.simCode);
}

結果輸出：
[1742:111130] NOT NEW 新建iphone4S
[1742:111130] myPhone 電話 Sim Code:1234
[1742:111130] companyPhone 電話 Sim Code:5678
[1742:111130] companyPhone2 電話 Sim Code:5678

private void btnLogSimCode_Click(object sender, EventArgs e)
{
    iPhone4S myPhone = new iPhone4S();
    iPhone4S companyPhone = iPhone4S.shareInstance();
    iPhone4S companyPhone2 = iPhone4S.shareInstance();

    myPhone.simCode = "1234";
    companyPhone2.simCode = "5678";

    Console.WriteLine("myPhone 電話 Sim Code:" + myPhone.simCode);
    Console.WriteLine("companyPhone 電話 Sim Code:" + companyPhone.simCode);
    Console.WriteLine("companyPhone2 電話 Sim Code:" + companyPhone2.simCode);
}

結果輸出:
NOT NEW 新建iphone4S
myPhone 電話 Sim Code:1234
companyPhone 電話 Sim Code:5678
companyPhone2 電話 Sim Code:5678