xcode 执行不完整
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Incomplete implementation
提问by pdenlinger
I'm getting an incomplete implementation warning on my implementation page, which I have commented out:
我在我的实现页面上收到了一个不完整的实现警告，我已经注释掉了：
#import "BIDDatePickerViewController.h"
@implementation BIDDatePickerViewController // Incomplete implementation
@synthesize datePicker;
- (IBAction)buttonPressed:(id)sender
{
NSDate *selected = [datePicker date];
NSString *message = [[NSString alloc] initWithFormat:@"The date and time you selected is:%@", selected];
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:@"Date and Time Selected"
message:message
delegate:nil
cancelButtonTitle:@"Yes I did"
otherButtonTitles:nil];
[alert show];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
NSDate *now = [NSDate date];
[datePicker setDate:now animated:NO];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.datePicker = nil;
}
@end
Also the custom part of the message, showing date, time chosen is not showing up correctly. Why?
此外，消息的自定义部分（显示日期、所选时间）未正确显示。为什么？
Following is the interface file:
接口文件如下：
#import <UIKit/UIKit.h>
@interface BIDDatePickerViewController : UIViewController
@property (strong, nonatomic) IBOutlet UIDatePicker *datePicker;
-(IBAction)buttonPressed;
@end
回答by Marc Charbonneau
The reason you're getting a warning is because you implemented the method - (IBAction)buttonPressed:(id)sender, while you defined the method -(IBAction)buttonPressed;. Note the lack of an argument on the interface.
您收到警告的原因是您- (IBAction)buttonPressed:(id)sender在定义方法的同时实现了方法-(IBAction)buttonPressed;。请注意接口上缺少参数。
回答by syclonefx
In your .h file you have - (IBAction)buttonPressed;and in your .m file you have - (IBAction)buttonPressed:(id)sender. You should have - (IBAction)buttonPressed;in your .m file
在你的 .h 文件中你有- (IBAction)buttonPressed;，在你的 .m 文件中你有- (IBAction)buttonPressed:(id)sender. 你应该- (IBAction)buttonPressed;在你的 .m 文件中
