預計標識符或「（」

Question

#import <UIKit/UIKit.h> 
#import <CoreLocation/CoreLocation.h> 

@interface ViewController : UIViewController<CLLocationManagerDelegate> 
{   
    CLLocationManager *_locationManager; 
} 
@property (strong, nonatomic) IBOutlet UISwitch *locationUpdatesSwitch; 
@property (strong, nonatomic) IBOutlet UILabel *locationInformationLabel; 

- (IBAction)toggleLocationUpdates:(id)sender; 
{ //EXPECTED IDENTIFIER OR "(" 
    if (self.locationUpdatesSwitch.on == YES) 

{ 
    if ([CLLocationManager locationServicesEnabled] == NO) 
    { 
     UIAlertView *locationServicesDisabledAlert = 
     [[UIAlertView alloc] initWithTitle:@"Location Services Disabled" 
            message:@"This feature requires location services. Enable it in the privacy settingson your device" 
            delegate:nil 
         cancelButtonTitle:@"Dismiss" 
         otherButtonTitles:nil]; 
     [locationServicesDisabledAlert show]; 
     self.locationUpdatesSwitch.on = NO; 
     return; 
     } 
} 

    else 

    { 
    // Switch was turned Off 
} 
} 

試圖在一個小核心的基於位置的Xcode項目的工作。任何人都可以幫助我在這裏？我沒有看到什麼我失蹤，但我得到一個「預期標識符或」（ 「」 錯誤之後 - （IBAction爲）toggleLocationUpdates：（ID）發送;

在此先感謝

Answer 1

在@interface部分不能寫入功能機構將其移動到.m文件，在@implementation！ 。

Answer 2

除了湯姆的回答，您需要刪除您IBAction爲方法的;在your.m文件

變化

- (IBAction)toggleLocationUpdates:(id)sender;

到

- (IBAction)toggleLocationUpdates:(id)sender {}