传统方式
一般情况下弹出日期选择的场景是：用户点击UITextField弹出日期选择，关键代码如下:
点击UITextField弹出日期选择
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UITextField *textField;textField.inputView = [[UIDatePicker alloc] init];textField.inputAccessoryView = [[UIToolbar alloc] init]; |
但是inputView,inputAccessoryView是在UIView的父类UIResponder中定义的只读属性，UITextField重写了这2个属性并且将readonly修改成readwrite
UIResponder
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@property (nullable, nonatomic, readonly, strong) UIView *inputView;@property (nullable, nonatomic, readonly, strong) UIView *inputAccessoryView; |
UITextField
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@property (nullable, readwrite, strong) UIView *inputView; @property (nullable, readwrite, strong) UIView *inputAccessoryView; |
这就意味着对于普通的UIView我们是不能通过设置inputView,inputAccessoryView来弹出日期选择的。
UIViewControler模态弹出方式
这里我们使用ViewController模态弹出的方式实现，它可以在任何时候你想选择日期时都可以弹出来，而不局限于通过inputView,inputAccessoryView属性。
调用方式
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- (void)showDatePicker
{ ISSDatePickerViewController *viewController = [[ISSDatePickerViewController alloc] init];
viewController.minDate = [NSDate dateFromString3:@"1900-1-1"];
viewController.maxDate = [NSDate new];
viewController.delegate = self;
viewController.datePickerMode = UIDatePickerModeDate;
viewController.currentDate = [NSDate new];
if(IS_IOS8_OR_LATER)
{
viewController.modalPresentationStyle = UIModalPresentationOverCurrentContext;
}
else
{
viewController.modalPresentationStyle = UIModalPresentationCurrentContext;
}
[self presentViewController:viewController animated:YES completion:^{
viewController.view.backgroundColor = RGBAColor(0, 0, 0, 0.3);
}];
}#pragma mark ISSDatePickerViewControllerDelegate- (void)onDatePicked:(NSDate *)date
{} |
效果图：