無效的參數類型void以一元表達

Question

進出口目前做一個應用程序時遇到了一些困難，這裏是代碼：

-(void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)ButtonIndex { 
       if (ButtonIndex == 1) { 

        - (void) reportScore: (int64_t) score forCategory: (NSString*) category 
        { 
         GKScore *scoreReporter = [[[GKScore alloc] initWithCategory:@"123"] autorelease]; 
         scoreReporter.value = score; 

         [scoreReporter reportScoreWithCompletionHandler:^(NSError *error) { 
          if (error != nil) 
          { 
           // handle the reporting error 
          } 
         }]; 
         else if (ButtonIndex==2){ 
          - (void) showLeaderboard: 
          { 
           GKLeaderboardViewController *leaderboardController = [[GKLeaderboardViewController alloc] init]; 
           if (leaderboardController != nil) 
           { 
            leaderboardController.leaderboardDelegate = self; 
            [self presentModalViewController: leaderboardController animated: YES]; 
           } 
          } 

         } 

        } 


        -(void) leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController{ 

         [self dismissModalViewControllerAnimated:YES]; 

        } 



        } 



       } 

我的問題是，上線： - （無效）reportScore：（的int64_t） ............ 它說「無效的參數類型無效的一元表達式」

請幫助，謝謝。

Answer 1

你正在另一種方法中聲明方法，你不能這樣做。分別聲明所有方法，並在適當的地方調用它們。

- (void) reportScore: (int64_t) score forCategory: (NSString*) category 
{ 
        GKScore *scoreReporter = [[[GKScore alloc] initWithCategory:@"123"] autorelease]; 
        scoreReporter.value = score; 

        [scoreReporter reportScoreWithCompletionHandler:^(NSError *error) { 
         if (error != nil) 
         { 
          // handle the reporting error 
         } 
        }]; 
} 
- (void) showLeaderboard: 
    { 
         GKLeaderboardViewController *leaderboardController = [[GKLeaderboardViewController alloc] init]; 
         if (leaderboardController != nil) 
         { 
          leaderboardController.leaderboardDelegate = self; 
          [self presentModalViewController: leaderboardController animated: YES]; 
         } 
    } 
-(void) leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController 
{ 

       [self dismissModalViewControllerAnimated:YES]; 

} 
-(void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)ButtonIndex { 
      if (ButtonIndex == 1) 
      { 
       [self reportScore:score forCategory:cat]; 
      } 
      else if (ButtonIndex==2) 
      { 
       [self showLeaderboard]; 
      } 

}