在 iOS8 的 UIActionSheet 中添加 UIPickerView 的最佳解决方案是啥？
Posted
技术标签:
【中文标题】在 iOS8 的 UIActionSheet 中添加 UIPickerView 的最佳解决方案是啥？【英文标题】：What is best solution to add a UIPickerView inside a UIActionSheet in iOS8?在 iOS8 的 UIActionSheet 中添加 UIPickerView 的最佳解决方案是什么？ 【发布时间】：2014-09-18 22:12:19 【问题描述】：我知道新的 UIAlertController，但除了创建 UIViewController、将 UIPickerView 添加为子视图并以模态方式呈现之外，我还没有看到其他解决方案。这可能意味着添加委托以传递信息:(
任何人都可以发布一个使用 UIAlertController 和内部选择器的示例......都在同一个控制器中吗？
谢谢
【问题讨论】：
【参考方案1】：对于 ios8 ActionSheetPicker-3.0 是日期选择器和其他选择器的最佳解决方案。
【讨论】：
没关系，我最终创建了新的控制器（带有选择器）......过渡平稳而愉快。我猜 Apple 已经受够了在 UIViews 上观看选择器。 我无法快速使用它。我在没有 Pod 的情况下手动添加它并使用桥接头。请帮忙【参考方案2】：不要将 DatePicker 嵌入 UIActionSheet！从 iOS 7 开始，UIActionSheet 不应该包含任何自定义子视图，我可以向您保证，在 iOS 8 中，添加到 ActionSheet 的任何子视图都不会显示！
您可以执行以下操作并模拟 ActionSheet（下面是日期选择器的示例，该示例从底部开始动画，并且还包含一个带有按钮的 UIToolbar）：
创建两个属性：
@property (strong, nonatomic) UIDatePicker *theDatePicker;
@property (strong, nonatomic) UIView *pickerView;
创建您的选择器，将其嵌入 UIView 并显示：
-(void) createDatePickerAndShow
UIToolbar *controlToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, pickerView.bounds.size.width, 44)];
[controlToolbar sizeToFit];
UIBarButtonItem *spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *setButton = [[UIBarButtonItem alloc] initWithTitle:@"Set" style:UIBarButtonItemStyleDone target:self action:@selector(dismissDateSet)];
UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:self action:@selector(cancelDateSet)];
[controlToolbar setItems:[NSArray arrayWithObjects:spacer, cancelButton, setButton, nil] animated:NO];
[theDatePicker setFrame:CGRectMake(0, controlToolbar.frame.size.height - 15, theDatePicker.frame.size.width, theDatePicker.frame.size.height)];
if (!pickerView)
pickerView = [[UIView alloc] initWithFrame:theDatePicker.frame];
else
[pickerView setHidden:NO];
CGFloat pickerViewYpositionHidden = self.view.frame.size.height + pickerView.frame.size.height;
CGFloat pickerViewYposition = self.view.frame.size.height - pickerView.frame.size.height;
[pickerView setFrame:CGRectMake(pickerView.frame.origin.x,
pickerViewYpositionHidden,
pickerView.frame.size.width,
pickerView.frame.size.height)];
[pickerView setBackgroundColor:[UIColor whiteColor]];
[pickerView addSubview:controlToolbar];
[pickerView addSubview:theDatePicker];
[theDatePicker setHidden:NO];
[self.view addSubview:pickerView];
[UIView animateWithDuration:0.5f
animations:^
[pickerView setFrame:CGRectMake(pickerView.frame.origin.x,
pickerViewYposition,
pickerView.frame.size.width,
pickerView.frame.size.height)];
completion:nil];
然后关闭 DatePicker：
-(void) cancelDateSet
CGFloat pickerViewYpositionHidden = self.view.frame.size.height + pickerView.frame.size.height;
[UIView animateWithDuration:0.5f
animations:^
[pickerView setFrame:CGRectMake(pickerView.frame.origin.x,
pickerViewYpositionHidden,
pickerView.frame.size.width,
pickerView.frame.size.height)];
completion:nil];
【讨论】：
pickerview 声明为什么？ @MarkWorsnop 我不明白这个问题。请改写。【参考方案3】：使用 UIAlertController，它是 UIActionSheet 的首选替代品。然后使用 addSubView 将 UIDatePicker 添加到 UIAlertController.view 而不是 UIActionSheet。将 UIAlertController 的标题设置为与您为 UIActionSheet 所做的相同。这是一个代码示例：
@interface MyControllerClass()
@private UIDatePicker* datePicker;
@end
@implementation MyControllerClass
...
-(void) showDatePicker
if (!datePicker)
datePicker = [[UIDatePicker alloc] init];
NSString *title = UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation) ? @"\n\n\n\n\n\n\n\n\n" : @"\n\n\n\n\n\n\n\n\n\n\n\n" ;
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_7_1)
//Pre iOS 8
UIActionSheet *actionSheet = [[UIActionSheet alloc]
initWithTitle:title
delegate:self
cancelButtonTitle:nil
destructiveButtonTitle:nil
otherButtonTitles:@"OK", nil];
[actionSheet addSubview:datePicker];
[actionSheet setTag:ACTION_SHEET_DATEPICKER];
[actionSheet showInView:self.aView];
else
//for iOS 8
UIAlertController* datePickerContainer = [UIAlertController alertControllerWithTitle: title
message:nil
preferredStyle: UIAlertControllerStyleActionSheet];
[datePickerContainer.view addSubview:datePicker];
//Add autolayout constraints to position the datepicker
[datePicker setTranslatesAutoresizingMaskIntoConstraints:NO];
// Create a dictionary to represent the view being positioned
NSDictionary *labelViewDictionary = NSDictionaryOfVariableBindings(datePicker);
NSArray* hConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-[datePicker]-|" options:0 metrics:nil views:labelViewDictionary];
[datePickerContainer.view addConstraints:hConstraints];
NSArray* vConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-[datePicker]" options:0 metrics:nil views:labelViewDictionary];
[datePickerContainer.view addConstraints:vConstraints];
[datePickerContainer addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction* action)
[self dateSelected:nil];
]];
[self presentViewController:datePickerContainer animated:YES completion:nil];
...
@end
请在您认为合适的情况下进行修改和改进。
【讨论】：
我也在尝试在 IOS8 上进行这项工作。你能告诉我 datePicker 的声明是什么吗？【参考方案4】：我认为第一条评论有一点错误，你必须注意它， 这是修改后的代码：
@property (strong, nonatomic) UIDatePicker *theDatePicker;
@property (strong, nonatomic) UIView *pickerView;
- (IBAction)createDatePickerAndShow:(id)sender;
然后链接到 createDatePickerAndShow 按钮。 之后创建您的选择器，将其嵌入 UIView 并显示：
//.................Edit to (IBAction)createDatePickerAndShow:(id)sender
- (IBAction)createDatePickerAndShow:(id)sender
UIToolbar *controlToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, _pickerView.bounds.size.width, 44)];
[controlToolbar sizeToFit];
UIBarButtonItem *spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
//............add this to disable the warning of @selector(dismissDateSet)]
#pragma GCC diagnostic ignored "-Wundeclared-selector"
UIBarButtonItem *setButton = [[UIBarButtonItem alloc] initWithTitle:@"done" style:UIBarButtonItemStyleDone target:self action:@selector(dismissDateSet)];
//...........Edit to UIBarButtonItemStylePlain that is supported in ios 8
UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:@"cancel" style:UIBarButtonItemStylePlain target:self action:@selector(cancelDateSet)];
[controlToolbar setItems:[NSArray arrayWithObjects: cancelButton, spacer, setButton, nil] animated:NO];
[_theDatePicker setFrame:CGRectMake(0, controlToolbar.frame.size.height - 15, _theDatePicker.frame.size.width, _theDatePicker.frame.size.height)];
if (!_pickerView)
_pickerView = [[UIView alloc] initWithFrame:_theDatePicker.frame];
else
//.................here edit _pickerView
[_pickerView setHidden:NO];
CGFloat pickerViewYpositionHidden = self.view.frame.size.height + _pickerView.frame.size.height;
CGFloat pickerViewYposition = self.view.frame.size.height - _pickerView.frame.size.height;
[_pickerView setFrame:CGRectMake(_pickerView.frame.origin.x,
pickerViewYpositionHidden,
_pickerView.frame.size.width,
_pickerView.frame.size.height)];
[_pickerView setBackgroundColor:[UIColor whiteColor]];
[_pickerView addSubview:controlToolbar];
[_pickerView addSubview:_theDatePicker];
[_theDatePicker setHidden:NO];
[self.view addSubview:_pickerView];
[UIView animateWithDuration:0.5f
animations:^
[_pickerView setFrame:CGRectMake(_pickerView.frame.origin.x,
pickerViewYposition,
_pickerView.frame.size.width,
_pickerView.frame.size.height)];
completion:nil];
同样解除 DatePicker：
-(void) cancelDateSet
CGFloat pickerViewYpositionHidden = self.view.frame.size.height + _pickerView.frame.size.height;
[UIView animateWithDuration:0.5f
animations:^
[_pickerView setFrame:CGRectMake(_pickerView.frame.origin.x,
pickerViewYpositionHidden,
_pickerView.frame.size.width,
_pickerView.frame.size.height)];
completion:nil];
【讨论】：
以上是关于在 iOS8 的 UIActionSheet 中添加 UIPickerView 的最佳解决方案是啥？的主要内容，如果未能解决你的问题，请参考以下文章
在 iOS8 的 UIActionSheet 中添加 UIPickerView 的最佳解决方案是啥？
UIActionSheet _button valueforKey Crash in iOS8
iOS 8 之后，还能继续使用 UIActionSheet 和 UIAlertView 吗？
UIAlertView,UIActionSheet和iOS8推出UIAlertControl的基本使用
如何处理： UIActionSheet deprecated (iOS8) X UIAlertController not supported (iOS7)