Objective-C Factory 方法

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調用過程更加清晰

＋為靜態方法

 1 // 類定義 2 @interface People : NSObject{ 3     int _age; 4     NSString* _name; 5 } 6 // Factory 方法  靜態 7 +(People*)peopleWithAge:(int)age andName:(NSString*)name; 8  9 -(id)initWithAge:(int)age andName:(NSString*)name;10 -(int)getAge;11 -(NSString*)getName;12 @end13 14 15 // 類實現16 @implementation People17 18 // Factory 方法19 +(People*)peopleWithAge:(int)age andName:(NSString*)name{20     return [[People alloc] initWithAge:age andName:name];21 }22 23 // 初始化方法24 -(instancetype)initWithAge:(int)age andName:(NSString *)name{25     self = [super init]; // 執行父類init方法26     if (self) {27         _age = age;28         _name = name;29     }30     return self;31 }32 33 -(int)getAge{34     return _age;35 }36 37 -(NSString*)getName{38     return _name;39 }40 @end41 42 43 // 調用44 int main(int argc, char * argv[]) {45     People *p = [People peopleWithAge:10 andName:@"jinpangpang"];46     NSLog(@"p.age %d, p.name %@",[p getAge],[p getName]);47     48     @autoreleasepool {49         return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));50     }51 }

 

Objective-C Factory 方法