uipickerviewcontroller

来源： https://stackoverflow.com/questions/62653008/initialization-of-uidocumentpickerviewcontroller-in-ios-14

问题 I’m very new to Swift and Xcode and I’ve built a simple two storyboard app which has a welcome screen and a button that triggers a seque to second storyboard (for which I have created its own class based on UIVIewController. Second storyboard has a couple of UIPickerView objects a and a couple of UIDatePickerView objects and a button. I have some basic actions under the didSelectRow function. However when I build and run the app I get an odd and seemingly random bevahiour where selecting

问题 I just wanna let you know that the version of Xcode that I'm working on is 7.1.1. Getting to the point, I have three Pickerviews as is shown in the image below. Main pickerview, left pickerview, and right pickerview. The array of main pickerview has a group of names, and each name has a group of units, and the right and left pickers are supposed to have the same data. I have made a dictionary in order to sync those groups of units to where it belongs, but I could not do it. I tagged the main

问题 Hello all I wanted to know if it is possible to get the UIIMAGE reference from the iphone camera after I press the takepicture button. I don't want to have to press on the use button for the delegate method to be called before I can access the image. One way of doing that is by copying whatever is on the screen at that time but the problem is that I have a overlayed view so am getting the image with the frame. Any ideas anyone? 回答1: Basically if we call the showcameracontrols = no , the

问题 I have an app with a UIPickerView. I am returning a custom view with the method - (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view It looked fine in iOS 6. In iOS 7, not so much -- screen shot below. Notice that in the cells that don't have focus, the second and third columns overlap. The central row is correct. Any suggestions? 回答1: It seems that for a strange reason, if the width of any column is higher

问题 i am having a tableview in which custom cells are loaded.Custom cell has a button on click of which a pickerview will open which will have options to choose from. The problem is that modalViewController method is not working, it is giving the following error. Selector *sel = [[Selector alloc]initWithNibName:@"Selector" bundle:nil]; [self PresentModalViewController:sel animated:YES]; error:property presentModalViewController not found on object of type CustomCell *...and selector is the

问题 I am trying to implement MRCountryPicker for selecting Country Flag and Code.I have installed pods. now i have no idea how can i get delegate method or how can i declare like this "MRCountryPickerDelegate" for more detail check out https://github.com/xtrinch/MRCountryPicker class ViewController: UIViewController, MRCountryPickerDelegate { i am getting this error Thanks for your appreciation's and help..Thank you. 回答1: If I understand your question properly, First you must "import

问题 I'm subclassing UIImagePickerController in attempt to override its default status bar behavior and having mixed results. My app uses view controller-based status bar appearance. Without subclassing, I'm finding that it changes the status bar style to Default (dark) when the picker is dismissed, and nothing I've tried yet in my initial view controller is fixing it. Also, when the picker hides the status bar while being presented, sliding it upwards, the initial view controller's navigation bar

问题 I'm trying to change though a timer in a different method the text of a label I created programmatically in a UIView overlay that goes on a UIImagePickerviewController, but of course when I try to change the text in this way labelname.text = @"TEST"; I get the error "use of undeclared identifier labelname " How can I refer to that specific label? Should I create a new label each time the timer ticks? I tried to declare it in the .h file, but I'm guessing i'm just creating a different label..

问题 How to restrict the UIPickerView component scrolling. I have two components in UIPickeView one second component ends scroll allows user to touch the first component to change the value in it. How can I restrict the user to touch component one until and unless the second component scrolling complemented. 回答1: Using this extension, you can check UIPickerView is scrolling or not. Depend on scrolling, you can enable/disable interaction with UIPickerView. extension UIView { func isScrolling () ->