error：expected identifier or'（'before'{'token

Question

嗨 我收到一个错误，错误消息就像 /IphoneTextFieldViewController.h:13：错误：预期的标识符或'（'之前的'{'标记

其实我没有得到为什么会出现这样和我有张贴低于.h文件中的代码和行号13（{ - 这个冒号线显示错误），普莱舍帮助我在这一个

谢谢提前

.h文件

#import <UIKit/UIKit.h> 

@interface IphoneTextFieldViewController : UIViewController { 

    IBOutlet UITextField *textField; 
    IBOutlet UITextField *textField1; 
    IBOutlet UITextField *textField2; 

    NSString *String; 

} 
@property(nonatomic, retain)IBOutlet UITextField *textField; 
@property(nonatomic, retain)IBOutlet UITextField *textField1; 
@property(nonatomic, retain)IBOutlet UITextField *textField2; 
@property(nonatomic, retain)IBOutlet NSString *String; 



-(IBAction)changrGreeting; 
{        13: error: expected identifier or '(' before '{' token 





    self.String=textField.text; 
    NSString *nameString=String; 

    self.String=textField1.text; 
    NSString *nameString1=String; 

    if ([nameString length]== 0) 
    { 
     nameString = @" "; 
    } 

    if([nameString1 length]== 0) 
    { 
     nameString1=@" "; 
    } 

    textField2.text=[NSString stringWithFormat:@"%@ %@",textField.text,textField1.text]; 

} 

@end 

.m文件

// 
// IphoneTextFieldViewController.m 
// IphoneTextField 
// 
// Created by Span on 1/31/11. 
// Copyright __MyCompanyName__ 2011. All rights reserved. 
// 

#import "IphoneTextFieldViewController.h" 
#import "IphoneTextFieldAppDelegate.h" 

@implementation IphoneTextFieldViewController 

@synthesize textField; 
@synthesize textField1; 
@synthesize textField2; 
@synthesize String; 

-(IBAction)changrGreeting; 
{ 
    self.String=textField.text; 
    NSString *nameString=String; 

    self.String=textField1.text; 
    NSString *nameString1=String; 

    if([nameString length]==0) 
    { 
     nameString=@" "; 
    } 

    if([nameString1 length]==0) 
    { 
     nameString1=@" "; 
    } 

    textField2.text=[NSString stringWithFormat:@" %@ %@",textField.text,textField1.text]; 
} 

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    [textField resignFirstResponder]; 
    [textField1 resignFirstResponder]; 
    [super touchesBegan:touches withEvent:event]; 

} 




/* 
// The designated initializer. Override to perform setup that is required before the view is loaded. 
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { 
    if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) { 
     // Custom initialization 
    } 
    return self; 
} 
*/ 

/* 
// Implement loadView to create a view hierarchy programmatically, without using a nib. 
- (void)loadView { 
} 
*/ 


/* 
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib. 
- (void)viewDidLoad { 
    [super viewDidLoad]; 
} 
*/ 


/* 
// Override to allow orientations other than the default portrait orientation. 
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { 
    // Return YES for supported orientations 
    return (interfaceOrientation == UIInterfaceOrientationPortrait); 
} 
*/ 

- (void)didReceiveMemoryWarning { 
    // Releases the view if it doesn't have a superview. 
    [super didReceiveMemoryWarning]; 

    // Release any cached data, images, etc that aren't in use. 
} 

- (void)viewDidUnload { 
    // Release any retained subviews of the main view. 
    // e.g. self.myOutlet = nil; 
} 


- (void)dealloc { 
    [textField release]; 
    [textField1 release]; 
    [textField2 release]; 
    [String release]; 

    [super dealloc]; 
} 

@end 

Answer 1

为什么你要实现你的接口（.h）中？

{ 
    self.String=textField.text; 
    NSString *nameString=String; 
    self.String=textField1.text; 
    NSString *nameString1=String; 
    if ([nameString length]== 0) 
    { 
     nameString = @" "; 
    } 
    if([nameString1 length]== 0) 
    { 
     nameString1=@" "; 
    } 
    textField2.text=[NSString stringWithFormat:@"%@ %@",textField.text,textField1.text]; 
} 

这不属于那里。删除它。

，并在您执行删除后面-(IBAction)changrGreeting;的;（.M）

Answer 2

取出;前{...

应该

-(IBAction)changrGreeting{ 

其次从接口删除方法定义......只要保持方法声明......

干杯

Answer 3

.h文件中必须看起来像

#import <UIKit/UIKit.h> 

    @interface IphoneTextFieldViewController : UIViewController { 
    IBOutlet UITextField *textField; 
    IBOutlet UITextField *textField1; 
    IBOutlet UITextField *textField2; 

    NSString *String; 

} 
@property(nonatomic, retain)IBOutlet UITextField *textField; 
@property(nonatomic, retain)IBOutlet UITextField *textField1; 
@property(nonatomic, retain)IBOutlet UITextField *textField2; 
@property(nonatomic, retain)IBOutlet NSString *String; 

-(IBAction)changrGreeting; 

and in .m

-(IBAction)changrGreeting 
{ 
    self.String=textField.text; 
    NSString *nameString=String; 

    self.String=textField1.text; 
    NSString *nameString1=String; 

    if([nameString length]==0) 
    { 
     nameString=@" "; 
    } 

    if([nameString1 length]==0) 
    { 
     nameString1=@" "; 
    } 

    textField2.text=[NSString stringWithFormat:@" %@ %@",textField.text,textField1.text]; 
} 

Answer 4

如果您从其他位置复制粘贴方法名称，也会发生这种情况。例如，当构建其API API与Apples一致的框架时，我会经常查找相关类，并将“任务”部分作为起点。问题在于，有些网站（如Apples文档）将显示EN DASH，而不是编译器期望的连字符。