picker

问题 I want to build a "Picker Menu" inside a screen. I think the time picker popup components are not smooth enough to use, because they require extra clicks instead of just dragging to the wanted element. The component should return the selected value + change the color of the selected value. I thought of ListView/ ScrollView, but I couldn't find a way to get that working yet. Below: A great gimp graphic to show what the goal is, placing the Android Time Picker inside the screen as visual

问题 For my react-native app, I need Image+Text in label of Picker.Item like in picture below. Everything okay in IOS but on Android I get an error. Here is my Picker Component code. <Picker style={{width: 100, height: '100%', marginLeft: 5}} selectedValue={this.state.selectedCountry} onValueChange={(value)=>this.onCodeChanged(value)}> <Picker.Item label={<Text style={{alignItems: 'center', flexDirection: 'row'}}> <Thumbnail square style={{width: 30, height: 20, marginTop: 5}} source={require('..

问题 I am trying to create a SwiftUI picker that users can use to select a number from 1000 to 20000 (in increments of 1000. for example 1000,2000,3000 .... ... 20000) By default the SwiftUI picker can only hold 10 rows of text. How can I allow the SwiftUI picker to contain 20 rows of text? 回答1: I guess you wrote something like this: struct ContentView: View { var body: some View { Picker(selection: $value, label: Text("Pick One")) { Text("1000").tag(1000) Text("2000").tag(2000) Text("3000").tag

问题 I was searching for a way to change the colors of the ok and cancel button of my custom picker. I added this code to the styles file on the android project: <style name="SpinnerDialog" parent="Theme.AppCompat.Light.Dialog"> <item name="android:popupBackground">#039BE5</item> <item name="colorPrimary">#039BE5</item> <item name="colorPrimaryDark">#039BE5</item> <item name="colorAccent">#039BE5</item> </style> I run the app on my Xiaomi POCOPHONE F1 (Android v9) and on 2 emulators (Android v8.1)

问题 Is there a way to set a default value for a picker? I save the last selected row from all the pickers and I want to be able to have the pickers load those saved rows at start up. As of now I have found this code: [settingsPagePicker selectRow:3 inComponent:0 animated:YES]; It works but only when the user taps the picker. I need it to work when the app is first loaded. If I put this code at viewDidLoad the app will crash. Anyone know where the proper place to put this in my code to make it

问题 I am using picker in my Tiatnium Application. Picker data is loading from json response.I first store API data in Temporary array and then adding data to picker. The problem is when I click picker elements for the first time the change event doesn't get fired. After first click is done then if I click on any element it works as expected. Here is the small code snippet of it for (var i = sorted.length - 1; i >= 0; i--) { pickerData[i] = Ti.UI.createPickerRow({ title : sorted[i], }); Ti.API

问题 I have a UIDatePicker that well, allows you to select a date (not time). I then save this NSDate and use display it in a label on a different view. However, when I load back the view with the UIDatePicker , if the user has already selected a date, I want it to show that selected date (using NSDefaultPrefs ). How do I do this? I know how to do it for a normal UIPickerView , but how does it work if it is a date? Thanks. 回答1: You save and restore the date however you want (in a DB , NSDefaults ,

问题 I want to increase font size in DateTimePicker in Window Form C#. I want to set minimum 14 to 16 font size in DateTime picker. I have tried below code but it's not working. dateTimePicker1.CalendarFont = new Font("Courier New", 8.25F, FontStyle.Italic, GraphicsUnit.Point, ((Byte)(0))); 回答1: If you wish to retain visual styles for the other controls in your application, but disable for the date picker's drop down only, you can use the following code: public class MyDateTimePicker :

问题 Is there any ready-to-use component for JSF that allows to chose the Date + the Time of an event? All components I know only allow for date. adding time manually is tedious. 回答1: The RichFaces calendar component allow you to choose both date and time. You can test it here. After choosing a date, it allows you to choose the time. Is it what you are looking for? 来源： https://stackoverflow.com/questions/625398/datetime-picker-for-jsf

问题 I'm trying to have a button to allow users to upload a file, into a specific folder. I tried to follow other advise, and add this hook to onPickerInit: var uploadView = new google.picker.DocsUploadView() uploadView.setParent('XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'); // test folder pickerBuilder.addView(uploadView); I've set the MULTISELECT_ENABLED feature (without it, the destination folder is not respected), and I can in fact now upload the files where they belong. Yay! HOWEVER: The picker