编辑：忘记分配代表，现在工作。
self.timePickerView.delegate = self;
self.timePickerView.dataSource = self;
好的，所以我使用 UIDatePicker 进行了此操作，并且效果很好，但是我想包括秒数，因此不得不尝试使用自定义选择器。现在我的操作表和按钮弹出，但我的自定义选择器应该是黑色的，我知道我错过了一些东西，或者只是采取了错误的方法。目标是让用户使用自定义选择器来选择一个小时/分钟/秒来记录他们在跑步上花费的时间等.....
我的主要问题是如何让我的自定义选择器在单击文本字段时出现，我知道我在选择器本身的实现中遗漏了一些东西，也许这个自定义选择器不遵循组件/行的默认方法？我知道我之前使用的日期不需要那些？提前感谢您的任何见解。
标题
@property (strong, nonatomic) UIPickerView *timePickerView;
@property (strong, nonatomic) UIActionSheet *datePickerViewPopup;
@property (retain, nonatomic) NSMutableArray *hoursArray;
@property (retain, nonatomic) NSMutableArray *minutesArray;
@property (retain, nonatomic) NSMutableArray *secondsArray;
查看确实加载了
NSString *stringValue = [[NSString alloc]init];
self.hoursArray = [[NSMutableArray alloc]init];
self.minutesArray = [[NSMutableArray alloc]init];
self.secondsArray = [[NSMutableArray alloc]init];
for (int i = 0; i < 61; i++) {
stringValue = [NSString stringWithFormat:@"%d", i];
if (i < 13) {
[self.hoursArray addObject:stringValue];
}
[self.minutesArray addObject:stringValue];
[self.secondsArray addObject:stringValue];
}
调用我的弹出窗口的单元格
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
switch (textField.tag) {
case 1003:
[textField resignFirstResponder];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setTimeZone:[NSTimeZone systemTimeZone]];
[dateFormatter setDateFormat:@"HH:mm:ss"];
self.datePickerViewPopup = [[UIActionSheet alloc]init];
const CGFloat toolBarHeight = 44.0f;
self.timePickerView = [[UIPickerView alloc]initWithFrame:CGRectMake(0, toolBarHeight, 0, 0)];
self.timePickerView.hidden = NO;
UIToolbar *pickerToolbar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, toolBarHeight)];
pickerToolbar.barStyle = UIBarStyleBlackOpaque;
[pickerToolbar sizeToFit];
NSMutableArray *toolBarItems = [[NSMutableArray alloc]init];
UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancelButtonPressed:)];
[toolBarItems addObject:cancelButton];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
[toolBarItems addObject:flexSpace];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(doneButtonPressed:)];
[toolBarItems addObject:doneButton];
NSDateComponents *comps = [[NSDateComponents alloc]init];
comps.hour = [self.timePickerView selectedRowInComponent:0];
comps.minute = [self.timePickerView selectedRowInComponent:1];
comps.second = [self.timePickerView selectedRowInComponent:2];
NSCalendar *calerdar = [NSCalendar currentCalendar];
NSDate *cardioTime = [calerdar dateFromComponents:comps];
textField.text = [dateFormatter stringFromDate:cardioTime];
[pickerToolbar setItems:toolBarItems animated:NO];
[self.datePickerViewPopup addSubview:pickerToolbar];
[self.datePickerViewPopup addSubview:self.timePickerView];
[self.datePickerViewPopup showInView:self.view.superview];
[self.datePickerViewPopup setBounds:CGRectMake(0, 0, self.view.frame.size.width, 464)];
break;
}
}
选择器方法
#pragma mark - Picker Methods
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 3;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
if (component == 0) {
return [self.hoursArray count];
} else if (component == 1) {
return [self.minutesArray count];
} else {
return [self.secondsArray count];
}
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
switch (component) {
case 0:
return [self.hoursArray objectAtIndex:row];
break;
case 1:
return [self.minutesArray objectAtIndex:row];
break;
case 2:
return [self.secondsArray objectAtIndex:row];
default:
break;
}
return nil;
}