objective-c - 从数组打印

Question

我试图从数组中获取一些数据并将其打印在 Xcode 中的 UILabel 上，但我收到警告:

Incompatible pointer types assigning to 'NSString *' from 'NSArray *'

这是我的代码:

NSError *myError = nil;
NSDictionary *res = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableLeaves  error:&myError];
NSArray *results =  [res objectForKey:@"current_observation"];
NSArray *cur = [results valueForKey:@"weather"];
NSArray *tmp = [results valueForKey:@"temp_c"];
NSLog(@"Current conditions: %@, %@º", cur, tmp);

temp.text = (@"%@", tmp);

Answer 1

而不是这个:

temp.text = (@"%@", tmp);

使用这个:

temp.text = [tmp componentsJoinedByString:@""];