“...：”的方法定义未找到

Question

我的应用程序不断发现“语义错误”，并且一直冻结/崩溃。一切似乎都很好地串起来，并且启动时没有问题。 TextFields正常工作，但只要我点击其他任何东西，它就会失败并强制执行。任何建议？ h。

h。

@interface ViewController : UIViewController { 
    IBOutlet UITextField *buy1; 
    IBOutlet UITextField *sell1; 
    IBOutlet UILabel *percentage1; 
    IBOutlet UILabel *profit1; 
    IBOutlet UITextField *royalty; 
    IBOutlet UITextField *buy2; 
    IBOutlet UILabel *sell2; 
    IBOutlet UITextField *percentage2; 
    IBOutlet UILabel *profit2; 

} 
@property (weak, nonatomic) IBOutlet UITextField *buytext1; 
@property (weak, nonatomic) IBOutlet UITextField *selltext1; 
@property (weak, nonatomic) IBOutlet UILabel *percentage1; 
@property (weak, nonatomic) IBOutlet UILabel *profit1; 
@property (weak, nonatomic) IBOutlet UITextField *royalty; 
@property (weak, nonatomic) IBOutlet UITextField *buytext2; 
@property (weak, nonatomic) IBOutlet UILabel *sell2; 
@property (weak, nonatomic) IBOutlet UITextField *percentagetext2; 
@property (weak, nonatomic) IBOutlet UILabel *profit2; 

-(IBAction)Button; 

- (IBAction)backgroundTouched:(id)sender; 

- (IBAction)textfieldReturn:(id)sender; 

@end 

m。

@implementation ViewController 
     //This is where I keep getting the Semantic Error "Incomplete Implementation" 
@synthesize buytext1; 
@synthesize selltext1; 
@synthesize buytext2; 
@synthesize percentagetext2; 

- (IBAction)backgroundTouched:(id)sender { 
    [buy1 resignFirstResponder]; 
    [sell1 resignFirstResponder]; 
    [buy2 resignFirstResponder]; 
    [percentage2 resignFirstResponder]; 

} 

    - (IBAction)textFieldReturn:(id)sender { 
     [buy1 resignFirstResponder]; 
     [sell1 resignFirstResponder]; 
     [buy2 resignFirstResponder]; 
     [percentage2 resignFirstResponder]; 

} 



int VarBuy1 = 0; 
int VarSell1 = 0; 
int VarProfit1 =0; 
int VarPercentage1 =0; 
int VarRoyalty = 0; 
int VarBuy2 = 0; 
int VarSell2 = 0; 
int VarProfit2 =0; 
int VarPercentage2 =0; 


-(IBAction)Button{ 
    VarBuy1 = ([buy1.text intValue]); 
    VarSell1 = ([sell1.text intValue]); 

    VarProfit1 = (VarSell1 - (VarSell1 * (VarRoyalty/100)) - VarBuy1); 
    VarPercentage1 = (VarProfit1/VarSell1); 
    VarSell2 = (VarBuy2/((100 - VarRoyalty)/100 - VarPercentage2)); 
    VarProfit2 = (VarSell2 - (VarSell2 * VarRoyalty) - VarBuy2); 

    profit1.text = [[NSNumber numberWithInt:VarProfit1] stringValue]; 
    percentage1.text = [[NSNumber numberWithInt:VarPercentage1] stringValue]; 
    sell2.text = [[NSNumber numberWithInt:VarSell2] stringValue]; 
    profit2.text = [[NSNumber numberWithInt:VarProfit2] stringValue]; 
} 

@end 

Answer 1

在.H

- (IBAction)textfieldReturn:(id)sender; 

在.M

- (IBAction)textFieldReturn:(id)sender 

要小心字母大小写。领域和领域。

而没有（id）发送者的IBAction听起来不太好。