iphone - 预期 Xcode 解析问题 ']'

Question

我不知道为什么我一直收到这个错误 Parse Issue Expected ']' ，任何帮助将不胜感激。

  locationManager didUpdateToLocation FromLocation
        - (void)locationManager:(CLLocationManager *)manager
    didUpdateToLocation:(CLLocation *)newLocation
    fromLocation:(CLLocation *)oldLocation {
        NSLog(@"%@", newLocation);
        self.speedView.text = [[NSString stringWithFormat:@"%d", (speedCount)
  I Receive the error on this line    [newLocation speed]];

        }

Answer 1

让我们看一下您的代码：

- (void)locationManager:(CLLocationManager *)manager
        didUpdateToLocation:(CLLocation *)newLocation
        fromLocation:(CLLocation *)oldLocation 
{
    NSLog(@"%@", newLocation);
    self.speedView.text = [[NSString stringWithFormat:@"%d", (speedCount)
   [newLocation speed]];
}

好吧，正如您所看到的，以 with 开头的行self.speedView.text不以分号结尾，也没有方括号来终止stringWithFormat调用，并且它有一个额外的方括号。

您可能打算这样做：

self.speedView.text = [NSString stringWithFormat:@"%d %f", speedCount, [newLocation speed]]; //Show both speedCount and speed in your text view(?)

或者：

self.speedView.text = [NSString stringWithFormat:@"%f", [newLocation speed]]; //Show only speed