uiactionsheet

问题 I am just trying to make a timer. I would like to use UIDatePickerModeCountDownTimer mode of the UIDatePicker , so that when the user simply selects say 15 mins in the picker, they are passed back to a screen that shows the value of 15 mins in a label that they can then count down from. As I have tried to get the value from the DatePicker, I realized that the picker passes back an NSTimeInterval that gets the current time in seconds: UIDatePicker *pickerView = [[UIDatePicker alloc] init];

问题 The font is very small and hard for some to read so I'd like to make it closer to the font size used on the buttons below it. 回答1: You can change font property after show method(like showFromBarButtonItem) as below. CGRect oldFrame = [(UILabel*)[[sheet subviews] objectAtIndex:0] frame]; UILabel *newTitle = [[[UILabel alloc] initWithFrame:oldFrame] autorelease]; newTitle.font = [UIFont boldSystemFontOfSize:17]; newTitle.textAlignment = UITextAlignmentCenter; newTitle.backgroundColor = [UIColor

问题 On an iPhone running iOS 8, the code below causes an action sheet to pop up. However, on an iPad running iOS 8 the code below does not cause an action sheet to pop up and instead nothing happens. NSUserDefaults *defauj = [NSUserDefaults standardUserDefaults]; NSArray *cod = [defauj objectForKey:@"customlistofstuff"]; UIActionSheet* actionSheet = [[UIActionSheet alloc] init]; actionSheet.delegate = self; for(int i=0;i<[cod count];i++) { [actionSheet addButtonWithTitle:[cod objectAtIndex:i]]; }

问题 Is there any way to present the datepicker from UIAlertControllerStyle.ActionSheet ? There is way to add buttons and add actions to those buttons in the ActionSheet, but i couldn't find a solution to add a datepicker or any custom view in the ActionSheet. 回答1: It is not possible, but you can use a UItextfield input view and accessory view to show and dismiss a datepicker when the user clicks the textfield class KPDatePickerViewController: UIViewController { var datePicker:UIDatePicker!

问题 Is there any way to present the datepicker from UIAlertControllerStyle.ActionSheet ? There is way to add buttons and add actions to those buttons in the ActionSheet, but i couldn't find a solution to add a datepicker or any custom view in the ActionSheet. 回答1: It is not possible, but you can use a UItextfield input view and accessory view to show and dismiss a datepicker when the user clicks the textfield class KPDatePickerViewController: UIViewController { var datePicker:UIDatePicker!

问题 I created an action sheet, but the problem is that the delegate method is not called myActionSheet = UIActionSheet() myActionSheet.addButtonWithTitle("Add event") myActionSheet.addButtonWithTitle("close") myActionSheet.cancelButtonIndex = 1 myActionSheet.showInView(self.view) /// UIActionSheetDelegate func actionSheet(myActionSheet: UIActionSheet!, clickedButtonAtIndex buttonIndex: Int){ if(myActionSheet.tag == 1){ if (buttonIndex == 0){ println("the index is 0") } } } I used another way

问题 Apple's documentation for the UIActionSheet is causing me confusion. First off, in the iPad Human Interface Guidelines, it says : To learn more about using an action sheet in your code, see “Using Popovers to Display Content” in iPad Programming Guide. But then in the "Using Popovers to Display Content" section, it doesn't mention Action Sheets at all! Am I missing something here? http://developer.apple.com/library/ios/#documentation/General/Conceptual/iPadHIG/UIElements/UIElements.html#/

问题 I have a method called -showMoreTools: which is: - (IBAction) showMoreTools:(id)sender { UIActionSheet *popupQuery = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:nil destructiveButtonTitle:@"Close" otherButtonTitles:@"Add Bookmark", @"Add to Home Screen", @"Print", @"Share", nil]; popupQuery.actionSheetStyle = UIActionSheetStyleDefault; popupQuery.dismiss [popupQuery showFromBarButtonItem:moreTools animated:YES]; [popupQuery release]; } When an user taps a

问题 I have an UIActionSheet and I am specifying the cancel button however it does not dismiss when its tapped? UIActionSheet *actionSheet = [[[UIActionSheet alloc]initWithTitle:nil delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:@"Target Complete" otherButtonTitles:nil] autorelease]; [actionSheet showInView:self.view]; According to the documentation I don't need any code and even when I try and implement the didCancel delegate method its never called? 回答1: Try this [actionSheet

问题 I wonder how to add check mark to the right of actionSheet button the simplest way? Bellow is a screenshot of Podcasts app. 回答1: Note that the solution can crash in a future update to iOS. I'm accessing undocumented private APIs. Such solutions are very fragile. Please see the comments below. Finally I got the answer by using UIAlertController: UIAlertController *customActionSheet = [UIAlertController alertControllerWithTitle:nil message:nil preferredStyle:UIAlertControllerStyleActionSheet];