Question

在Xcode中，我得到了一些应该正常构建的奇怪错误。

首先，在

- (void)touchesMoved:(NSSet *)touches withEvent(UIEvent *)event {
    [self touchesBegan:touches withEvent:event];
    marblebeingdragged = NO;
}

它给了我错误：

error: Semantic Issue: Use of undeclared identifier 'touchesMoved'
in the first line: `expected ';' before ':' token`

另外，在我的switch语句中:(注意case和break语句中注释的错误）

switch (marblecolor) {    
    case 1: //Aqua
        plusone.image = [UIImage imageNamed: @"Aqua/+1"]; //Parse Issue: Extraneous ']' before ';'

        plustwo.image = [UIImage imageNamed: @"Aqua/+2"];
        plusthree.image = [UIImage imageNamed: @"Aqua/+3"];
        minusone.image = [UIImage imageNamed: @"Aqua/-1"];
        minustwo.image = [UIImage imageNamed: @"Aqua/-2"];
        minusthree.image = [UIImage imageNamed: @"Aqua/-3"];
            break; //Semantic Issue: 'break' statement not in loop or switch statement

    case 2: //Blue //Semantic Issue: 'case' statement not in switch statement
        plusone.image = [UIImage imageNamed: @"Blue/+1"];
        plustwo.image = [UIImage imageNamed: @"Blue/+2"];
        plusthree.image = [UIImage imageNamed: @"Blue/+3"];
        minusone.image = [UIImage imageNamed: @"Blue/-1"];
        minustwo.image = [UIImage imageNamed: @"Blue/-2"];
        minusthree.image = [UIImage imageNamed: @"Blue/-3"];
        break; //Semantic Issue: 'break' statement not in loop or switch statement

    case 3: //Green //Semantic Issue: 'case' statement not in switch statement
        plusone.image = [UIImage imageNamed: @"Green/+1"];
        plustwo.image = [UIImage imageNamed: @"Green/+2"];
        plusthree.image = [UIImage imageNamed: @"Green/+3"];
        minusone.image = [UIImage imageNamed: @"Green/-1"];
        minustwo.image = [UIImage imageNamed: @"Green/-2"];
        minusthree.image = [UIImage imageNamed: @"Green/-3"];
            break; //Semantic Issue: 'break' statement not in loop or switch statement

    case 4: //Semantic Issue: 'case' statement not in switch statement
        plusone.image = [UIImage imageNamed: @"Grey/+1"];
        plustwo.image = [UIImage imageNamed: @"Grey/+2"];
        plusthree.image = [UIImage imageNamed: @"Grey/+3"];
        minusone.image = [UIImage imageNamed: @"Grey/-1"];
        minustwo.image = [UIImage imageNamed: @"Grey/-2"];
        minusthree.image = [UIImage imageNamed: @"Grey/-3"];
            break; //Semantic Issue: 'break' statement not in loop or switch statement

    case 5: //Pink //Semantic Issue: 'case' statement not in switch statement
        plusone.image = [UIImage imageNamed: @"Pink/+1"];
        plustwo.image = [UIImage imageNamed: @"Pink/+2"];
        plusthree.image = [UIImage imageNamed: @"Pink/+3"];
        minusone.image = [UIImage imageNamed: @"Pink/-1"];
        minustwo.image = [UIImage imageNamed: @"Pink/-2"];
        minusthree.image = [UIImage imageNamed: @"Pink/-3"];
            break;
}

最后，在我的@end中，它会显示错误：expected declaration or statement at end of input。

错误的任何线索？

Answer 1

对于初学者，- (void)touchesMoved:(NSSet *)touches withEvent(UIEvent *)event {行需要withEvent之后的冒号，因此它应该是- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {。

修复此问题，我们会看到有效的方法。（编辑：看看你的其他错误，他们可能会在你修复方法声明错误后消失。我当然希望@end错误消失。）

Xcode中的各种奇怪错误

1 个答案: