ios 带有对象/参数的 NSObject 自定义初始化
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NSObject custom init with object/parameters
提问by Oscar Apeland
What i'm trying to accomplish is something like
我想要完成的是
Person *person1 = [[Person alloc]initWithDict:dict];
and then in the NSObject"Person", have something like:
然后在NSObject“人”中，有类似的东西：
-(void)initWithDict:(NSDictionary*)dict{
self.name = [dict objectForKey:@"Name"];
self.age = [dict objectForKey:@"Age"];
return (Person with name and age);
}
which then allows me to keep using the person object with those params. Is this possible, or do I have to do the normal
然后允许我继续使用带有这些参数的人对象。这可能吗，还是我必须做正常的
Person *person1 = [[Person alloc]init];
person1.name = @"Bob";
person1.age = @"123";
?
?
回答by Hindu
Your return type is void while it should instancetype.
您的返回类型是 void 而它应该是instancetype。
And you can use both type of code which you want....
你可以使用你想要的两种类型的代码......
Update:
更新：
@interface testobj : NSObject
@property (nonatomic,strong) NSDictionary *data;
-(instancetype)initWithDict:(NSDictionary *)dict;
@end
.m
.m
@implementation testobj
@synthesize data;
-(instancetype)initWithDict:(NSDictionary *)dict{
self = [super init];
if(self)
{
self.data = dict;
}
return self;
}
@end
Use it as below:
如下使用：
testobj *tt = [[testobj alloc] initWithDict:@{ @"key": @"value" }];
NSLog(@"%@",tt.ss);
回答by zt9788
change your code like this
像这样改变你的代码
-(id)initWithDict:(NSDictionary*)dict
{
self = [super init];
if(self)
{
self.name = [dict objectForKey:@"Name"];
self.age = [dict objectForKey:@"Age"];
}
return self;
}
回答by Josep Escobar
So you can use modern objective-c style to get associative array values ;)
所以你可以使用现代的objective-c风格来获取关联数组值;)
-(id)initWithDict:(NSDictionary*)dict
{
self = [super init];
if(self)
{
self.name = dict[@"Name"];
self.age = dict[@"Age"];
}
return self;
}
