预期的 ':' 词法或预处理器错误 [英] Expected ':' Lexical or Preprocessor error

问题描述

嗯，这应该是一个非常快速和简单的问题.我正在创建一个滚动视图并且我已经完成了所有工作，但是有一个我不明白的错误！就像它只是令人困惑，对我来说没有意义！

Well this should be a pretty quick and easy question. I am creating a scrollview and i have it all done, but there is an error that i just dont understand it! like its just confusing and doesnt make sense to me!

错误://预期的 ':'

THE ERROR: // Expected ':'

视图控制器.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController{

}
@property (weak, nonatomic) IBOutlet UIScrollView *ScrollView;

@end

ViewController.m

ViewController.m

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
[super viewDidLoad];
[self ScrollView setScrollEnabled YES]    // Expected ':'
[self ScrollView setContentSize: CGSizeMake(320, 900)]
}

我做了所有这些，它只是说预期的标识符.

I did all of this and it just says expected identifier.

[super viewDidLoad];
[self.ScrollView setScrollEnabled: YES];
[[self.ScrollView setContentSize: CGSizeMake(320, 900)]];    //expected identifier

推荐答案

您似乎缺少一个冒号、几个点和几个分号:

It looks like you are missing a colon, a couple of dots, and a couple of semicolons:

[self.ScrollView setScrollEnabled:YES];
//   ^                           ^    ^
[self.ScrollView setContentSize:CGSizeMake(320, 900)];
//   ^                                                ^

您需要注意语法中的这些小元素——Objective C 不能容忍偏差.语法错误最糟糕的部分是您经常收到指向错误行的报告.

You need to watch out for these small elements of the syntax - Objective C does not tolerate deviations. The worst part about syntax errors is that you often get a report pointing to a wrong line.

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