我想用日期选取器来理解UiActionSheet。UIActionSheet - 类没有实现'UIActionSheetDelegate'协议
获取2个警告,我似乎无法清除,请参阅代码部分末尾的代码。
警告:语义问题:发送 'DeveloperTL *' 到不兼容的类型 'ID'
和
警告的参数:语义问题:发送 'DeveloperTL *' 不兼容类型的参数“ ID'
任何想法如何解决这些警告?
我从其他几个例子复制的代码:
define kPickerTag 200
define SelectButtonIndex 1
define CancelButtonIndex 2
NSString *strPrintDate;
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex != [actionSheet cancelButtonIndex]) {
//set Date formatter
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"MM/dd/YYYY h:mm a"];
//Gets our picker
UIDatePicker *ourDatePicker = (UIDatePicker *) [actionSheet viewWithTag:kPickerTag];
NSDate *selectedDate = [ourDatePicker date];
NSString *msg = [[NSString alloc] initWithFormat:@"The date that you had selected was, %@", [formatter stringFromDate:selectedDate]];
[formatter release];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Date" message:msg delegate:nil cancelButtonTitle:@"Dismiss" otherButtonTitles:nil];
[alert show];
[alert release];
[msg release];
}
}
-(void)willPresentActionSheet:(UIActionSheet *)actionSheet {
UIDatePicker *pickerView = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 50, 100, 116)];
[pickerView setTag:kPickerTag];
[pickerView setDatePickerMode:UIDatePickerModeDate];
if(strPrintDate != @"" && strPrintDate != nil)
{
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"MMM-dd-yyyy"];
NSDate *pickerdate = [dateFormat dateFromString:strPrintDate];
[pickerView setDate:pickerdate animated:YES];
[dateFormat release];
}
[actionSheet addSubview:pickerView];
[pickerView release];
NSArray *subViews = [actionSheet subviews];
[[subViews objectAtIndex: SelectButtonIndex] setFrame:CGRectMake(20, 266, 280, 46)];
[[subViews objectAtIndex:CancelButtonIndex] setFrame:CGRectMake(20, 317, 280, 46)];
}
- (IBAction)butn1 {
UIActionSheet *asheet = [[UIActionSheet alloc]
initWithTitle:@"Pick the date you want to see." delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Select", nil];
// THIS IS THE ERROR MESSAGE:
// **warning: Semantic Issue: Sending 'DeveloperTL *' to parameter of incompatible type // 'id<UIActionSheetDelegate>'**
[asheet showInView:[self.view superview]];
[asheet setFrame:CGRectMake(0, 117, 320, 383)];
[asheet release];
}
你缺少。 –
Smith3