xcode 无效的参数类型 void 到一元表达式
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Invalid argument type void to unary expression
提问by user1612646
Im currently making an app and am having some difficulty, here is the code:
我目前正在制作一个应用程序并且遇到了一些困难，这是代码：
-(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];
}
}
}
My problem is that on the line: -(void) reportScore: (int64_t)............ it says "Invalid argument type void to unary expression"
我的问题是在线上：-(void) reportScore: (int64_t)............它说“无效的参数类型void到一元表达式”
Please help, Thanks.
请帮忙，谢谢。
采纳答案by glenn sayers
You're declaring methods inside another method, which you can't do. Declare all your methods separately, and call them where appropriate.
你在另一个方法中声明方法，这是你不能做的。分别声明所有方法，并在适当的地方调用它们。
- (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];
}
}
