PickerView | Android滚动选择器（省市区联动选择、日期选择、时间选择） | Datepicker library
kandi X-RAY | PickerView Summary
kandi X-RAY | PickerView Summary
Android滚动选择器（省市区联动选择、日期选择、时间选择）
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Top functions reviewed by kandi - BETA
- Initializes the date picker
- Notify the currently selected item
- Helper method to add the flags for a field
- Update selection
- Region ViewDrawable
- Draw items
- Draw text
- Initialize the view
- Returns the Drawable object associated with the specified resource ID
- Right justify item
- Handle a touch event
- Handle the offset
- Computes the scroll offset
- Returns the view of the dialog s date picker
- Reset the size of the view
- Create the view
- Returns the view of the dialog
- Set the default picker view
- ButtonClick button
- Set the division state
- Gets the date string
- Create the dialog
- Convert Calendar time to ISO - clock
- Creates the dialog
- Set the contentView to be displayed
- Sets the minutes interval
PickerView Key Features
PickerView Examples and Code Snippets
Community Discussions
Trending Discussions on PickerView
QUESTION
This is my problem. In one ViewController there are two PickerViews which have data taken from a server and shown on the rows of the pickerView.
What I want to do is to save in the NSUserDefaults the data shown on the row selected by the user (in this case is an int) and use it in another ViewController inside a function.
Now I'm saving it in this way:
...ANSWER
Answered 2021-May-24 at 17:38Better solution would be -
QUESTION
I'm having trouble applying a Done button to my pickers.
I've been working through the solution provided in [https://stackoverflow.com/a/52777282/9383241][1] but this only gives an example where there is one picker on a page. I have two pickers in my use case and I distinguish between them using tags, which works for defining the functions within "extension MyViewController: UIPickerViewDataSource, UIPickerViewDelegate" - but I'm unsure how to use the tags in "extension MyViewController: ToolbarPickerViewDelegate {"
I can see that someone has commented saying "It might better for didTapDone and didTapCancel method to pass in the ToolbarPickerView instance; like func didTapDone(_ picker: ToolbarPickerView)" <--- I think that this is what I need, but I don't know how to do it.
Here's my code working for textField1 only, and I've included how I was thinking of structuring my code to implement the didTapDone and didTapCancel for my two pickers in comments.
...ANSWER
Answered 2021-Apr-24 at 06:39First, add the parameter to the delegate method declarations:
QUESTION
struct PickerView: View {
var items0 : [PageName]
@State var selectedPage: PageName?
init(items0: [PageName]) {
self.items0 = items0
self._selectedPage = State(initialValue: items0.first)
}
var body: some View {
Picker(selection: $selectedPage, label: Text("Page")) {
ForEach(items0) { item in
Text(item.pageName ?? "").tag(item as PageName?)
}
}
Text("\((selectedPage?.pageName)!)")
}
NavigationView {
Form {
PickerView(items0: Array(items0))
}
.foregroundColor(.blue)
.background(Color.yellow)
}
ANSWER
Answered 2021-Apr-24 at 00:21I misunderstood your issue with my original comment see below. There is a lot of info in the comments.
QUESTION
In an iOS apps I have a table view that has 2 rows with textfield embedded inside.
Textfield2 is a textfield with pickerview input that I set with something like this:
textField2.inputView = pickerView;
So the thing is , the textField 2 icon on the right is only an image embedded in the textfield2.rightview that caused the image to not trigger the pickerView input when tapped.
Did select table view method also wasn't triggered because I set the textfield to fully occupy the cell. Thus, after some searching I find that disabling the textField2 user interaction enabling the didSelect to be triggered.
textField2.userInteractionEnabled = false;
However, now I'm at lost on to how to trigger the input to textField2 pickerView via the didselect tableview method. I tried this line of code but that doesn't work.
...ANSWER
Answered 2021-Mar-26 at 12:56After some debugging with a clear mind, I find that
QUESTION
I'm trying to get a value received from an async closure and return it in a function with DispatchGroup however in the last part I get the error Cannot convert value of type 'String' to closure result type 'Void'
can anyone see the issue,
...ANSWER
Answered 2021-Mar-24 at 09:51You need
QUESTION
I have following code:
...ANSWER
Answered 2021-Mar-15 at 19:31db.collection("users").document(userID).setData([
"gender": selectedYearPicker
], merge: true)
QUESTION
I have this demo app:
As you can see, the alpha of the background is changing to black according to the value.
But the problem is that there is no smooth transition:
As you can see from the GIF, the background is only changing after the scrolling is over. And I don't want it to be like that.
this is my code:
...ANSWER
Answered 2021-Mar-15 at 13:28The delegate method didSelectRow is only called when the rolling stops, so this is not the place you should update your alpha. UIPickerView has no delegate method which will notify you about the change during the rolling, however the UIPickerView will call your data source and delegate methods to get the title or in your case the view for a given row so it can be displayed as the user scrolls. So what you should do is just move your alpa changing logic there:
QUESTION
I have a UIPickerView in my controller class and it is show when user touches a button.
...ANSWER
Answered 2021-Mar-05 at 11:53Unfortunately, you'd need an Apple employee who works on UIKit to tell you why. What I can tell you is that this appears to be normal. I threw together a small sample project that does nothing interesting to investigate this and it seems a large number of calls to this function also happen in a small view controller with a picker view and nothing else.
I would say whether or not this impacts your app's performance depends on what you do with the fact that this is called a lot of times. It doesn't really matter if it's normal behavior because you and I cannot fix it. But, if you don't want it to impact performance, don't do heavy things in that function.
If loadMonths is heavy, maybe it's better to do elsewhere if you start having performance problems.
QUESTION
I'm currently using XCode version 11.3.1 (11C505) and Swift 5 and I can't seem to find a good answer as to how to get the selected value from a picker wheel (view). Here's the relevant code from my ViewController.swift
ANSWER
Answered 2021-Mar-02 at 17:14Change test.text = "\(possibleNums[numberPicker.selectedRow(inComponent: 0)])" to this: test.text = "\(possibleNums[row])"
You only have one component, so you don't need to check for it, just return the row number as the array's index.
QUESTION
First of all please correct my topic subject or suggest an edit for the taggin in case if I mentioned somthing wrong.
I'm working on a store App project and I stuck in the selecting subSection VC because of the UIPickerView not getting the updated value from the array of target!
Here below is my code
...ANSWER
Answered 2021-Feb-16 at 15:58You may need to reload the picker end of updateTypesarray
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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No vulnerabilities reported
Install PickerView
You can use PickerView like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the PickerView component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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