uipickerview

问题 I am new to ios development. I am making a custom datepicker using UIPickerView. I have to show dates ranging from today to next 20 days & I am done with generating those dates & assigning them to an array.Those Dates have format: Oct 16,2013. But my problem is I want to show Weekday(in 3 characters),Month & day i.e. Wed,Oct 16 on UIpickerView. And for one current week only Days are shown i.e today,tomorrow,Fri,Sat,Sun,Mon,Tue and for Next Week it would have Wed,Oct 23 and so on. Thanks in

问题 hello I am trying to pop a UIPickerView view programmatically when user clicks on textfield. I have tried this but it doesn't doing anything. it isn't working. nothing is happening when I click the textfield class UserProfileTableViewController: UITableViewController,UITextFieldDelegate,UIPickerViewDelegate,UIPickerViewDataSource { var itemPicker: UIPickerView! = UIPickerView() @IBOutlet weak var genderTxtField: UITextField! var gender = ["MALE","FEMALE"] override func viewDidLoad() { super

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 For example, in this image, when I'm scrolling the UIPickerView to 2012 9 28 , what I want is that the text of the black label will change into 2012 9 28 at the same time without pressing any buttons like the Done button I’m using UIPickerView, I can get the selected data before, I can also put the data into label by clicking a Done button, but I cannot put the data into the label when I’m scrolling. and In a general situation, My question is that when I Scroll the UIPickerView, how can I get

问题 So, I'm making an app that after having the user select their level of education from a picker view and if they select college education a number of buttons are supposed to appear saying 'associates degree' 'bachelor's degree' and 'master's degree'. I know I need to make an if statement like this: func pickerView(pickerView: UIPickerView, row: Int, forComponent component: Int) -> String! { if educationLabel.text == educationLevel { return education[row] If row = "College Graduate" //Hidden

问题 I have a UIPickerView on my app, with a list of values, we can use Colors. The picker has only one wheel, and I manage to select the value by using this code: let app = XCUIApplication() app.launch() app.pickerWheels.element.adjustToPickerWheelValue("Yellow") But what I want to do is to get all the possible values of this wheel in an Array, so I can use the array values to select in the picker. Another good solution would be to make the selection by index instead of by key, but I could not

问题 I have a problem with my coding right now. I want to have two pickerviews in one view with different data in each picker. So when I click on a textfield a picker would appear with data, and when i click on another textfield the picker appears with different data. I managed to create the picker but the same data appears in each textfield. I have tried to make an action that separates the data of the pickers but I can't manage to get it to work. - (void)viewDidLoad{ dataArray = [[NSMutableArray

问题 This question already has answers here : How can I get a check mark beside UIPickerView labels? (2 answers) Closed 6 years ago . I am developing an application where i want to create a checkmark on the selected row by the user. For Ex. In UITableView there is UITableViewCellAccessoryCheckmark; But i am wondering is there something similar available for UIPickerView. Any tutorial or pointer to get this behaviour? 回答1: I've made a UIPickerView subclass which can be used to implement this

问题 I have a xib in which I have added a UIViewController named delta. The view under delta is controlled by the delta viewcontroller, not the file owner. On the delta view, I have a UIViewPicker . My issue is that I am programming in the UIPickerView in the deltaviewcontroller and I'm issuing deltaviewcontroller as the delegate and data source for the UIPickerView . Everything should work, but when I load the deltaviewcontroller's view, the application crashes. If I carry out everything the same

问题 I have a view with 8 textfields. I want each textfield to be associated with a pickerview which will have different items. This pickerview should populate each text field. When I click on the textfield it should show the pickerview and the items associated with it and when I select the item for that textfield it should dismiss the pickerview. Then again when I click on next textfield it should show the pickerview with the items for that text field and so on... Is it possible to do so? I am