Objective-C - 如何在使用 NSMutableArray 时放置引用 ID?
Objective-C - how to put reference ID while using NSMutableArray?
在 [randomSelection addObject:renderView];
上是否有分配自定义 peerID 引用(例如 id:cgiLoC0OdMNtVph3aMZV 或 cxeeeLoC0OdMNtVph3aMZV),以便稍后从某些 random/unsorted UIView 查询?
例如:创建时我有如下情况:
//@property (copy, nonatomic) NSMutableArray *randomSelection;
//UIView *renderView;
//renderView = [[UIView alloc] initWithFrame:CGRectMake(padding_x, padding_y, 50, 50)];
NSMutableArray *randomSelection = [[NSMutableArray alloc] init];
[randomSelection addObject:renderView];
//self.randomSelection = randomSelection;
但有些情况下我需要删除一些 UIView 但在那种情况下我只有一些 peerID 引用。我如何在使用 NSMutableArray
时获得一些自定义参考
- (void)callingRemoveMethod:(NSString *)peerID {
NSLog(@"removed %@", peerID);
/* instead of objectAtIndex is there a way to query
it by any custom references? */
//UIView *test = [self.randomSelection objectAtIndex:0];
//test.backgroundColor = [UIColor redColor];
}
您可以改用 NSMutableDictionary
并使用您的 ID
作为字典的键。
UIView
有一个标签 属性(一个 int
),您可以将其用于此目的,但它不能是任意信息(只是一个int
)
编辑:
NSMutableDictionary *jobs = [NSMutableDictionary
dictionaryWithDictionary:@{
@"Audi TT" : @"John",
@"Audi Quattro (Black)" : @"Mary",
@"Audi Quattro (Silver)" : @"Bill",
@"Audi A7" : @"Bill"
}];
// Transfer an existing job to Mary
[jobs setObject:@"Mary" forKey:@"Audi TT"];
// Finish a job
[jobs removeObjectForKey:@"Audi A7"];
// Add a new job
jobs[@"Audi R8 GT"] = @"Jack";
在 [randomSelection addObject:renderView];
上是否有分配自定义 peerID 引用(例如 id:cgiLoC0OdMNtVph3aMZV 或 cxeeeLoC0OdMNtVph3aMZV),以便稍后从某些 random/unsorted UIView 查询?
例如:创建时我有如下情况:
//@property (copy, nonatomic) NSMutableArray *randomSelection;
//UIView *renderView;
//renderView = [[UIView alloc] initWithFrame:CGRectMake(padding_x, padding_y, 50, 50)];
NSMutableArray *randomSelection = [[NSMutableArray alloc] init];
[randomSelection addObject:renderView];
//self.randomSelection = randomSelection;
但有些情况下我需要删除一些 UIView 但在那种情况下我只有一些 peerID 引用。我如何在使用 NSMutableArray
- (void)callingRemoveMethod:(NSString *)peerID {
NSLog(@"removed %@", peerID);
/* instead of objectAtIndex is there a way to query
it by any custom references? */
//UIView *test = [self.randomSelection objectAtIndex:0];
//test.backgroundColor = [UIColor redColor];
}
您可以改用
NSMutableDictionary
并使用您的ID
作为字典的键。UIView
有一个标签 属性(一个int
),您可以将其用于此目的,但它不能是任意信息(只是一个int
)
编辑:
NSMutableDictionary *jobs = [NSMutableDictionary
dictionaryWithDictionary:@{
@"Audi TT" : @"John",
@"Audi Quattro (Black)" : @"Mary",
@"Audi Quattro (Silver)" : @"Bill",
@"Audi A7" : @"Bill"
}];
// Transfer an existing job to Mary
[jobs setObject:@"Mary" forKey:@"Audi TT"];
// Finish a job
[jobs removeObjectForKey:@"Audi A7"];
// Add a new job
jobs[@"Audi R8 GT"] = @"Jack";