[英]How to access an nsarray count in a special case
我將塊設置如下:
id block = ^(id obj, BOOL *ignored)
{
id data = [self.writer dataWithObject:obj];
NSString *output = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
};
當我打電話時:
[[obj objectForKey:@"roster] objectForKey:@"players"];
我在看各種各樣的球員。 當我添加.count時,它找不到計數,因為它說count不是id的屬性。 如何訪問此數組的計數?
編輯:
這是我的全部內容:
id block = ^(id obj, BOOL *ignored) {
id data = [self.writer dataWithObject:obj];
NSMutableArray *players = (NSMutableArray*)[[obj objectForKey:@"roster"] objectForKey:@"players"];
_players = [NSMutableArray array];
//Create player objects then add them to the array.
for (int i = 0; i <= players.count; i++)
{
[_players addObject:[HNPlayerObject newPlayerWithPlayerId:(@"%@",[[[obj objectForKey:@"roster"] objectForKey:@"players"][i] objectForKey:@"id"])FirstName:(@"%@",[[[obj objectForKey:@"roster"] objectForKey:@"players"][i] objectForKey:@"first"]) LastName:(@"%@",[[[obj objectForKey:@"roster"] objectForKey:@"players"][i] objectForKey:@"last"]) Number:[(@"%@",[[[obj objectForKey:@"roster"] objectForKey:@"players"][i] objectForKey:@"number"]) intValue] Team:@"Badgers" Position:@"Unknown" Description:@"" GamesPlayed:[(@"%@",[[[obj objectForKey:@"roster"] objectForKey:@"players"][i] objectForKey:@"gp"]) intValue] Goals:[(@"%@",[[[obj objectForKey:@"roster"] objectForKey:@"players"][i] objectForKey:@"g"]) intValue] Assists:[(@"%@",[[[obj objectForKey:@"roster"] objectForKey:@"players"][i] objectForKey:@"a"]) intValue] Points:[(@"%@",[[[obj objectForKey:@"roster"] objectForKey:@"players"][i] objectForKey:@"pts"]) intValue] PenaltyMinutes:[(@"%@",[[[obj objectForKey:@"roster"] objectForKey:@"players"][i] objectForKey:@"pim"]) intValue] PlusMinus:[(@"%@",[[[obj objectForKey:@"roster"] objectForKey:@"players"][i] objectForKey:@"pm"]) intValue] IsPlaying:NO]];
[_playersTableView reloadData];
}
[_playersTableView reloadData];
};
我收到此錯誤:'NSRangeException',原因:'***-[__ NSArrayM objectAtIndex:]:索引17超出范圍[0 .. 16]
NSArray *array = (NSArray*)[[obj objectForKey:@"roster] objectForKey:@"players"];
然后,您將可以訪問count屬性。
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