webviewModel | 模型在线预览,支持obj , json , stl , gltf , fbx模型格式 | 3D Printing library
kandi X-RAY | webviewModel Summary
kandi X-RAY | webviewModel Summary
model viewer support fbx json obj gltf stl. support for Seer: 1218.io.
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QUESTION
I am pretty new to SwiftUI. I have a very simple view. It's just a root view that contains a WKWebView wrapped in a UIViewRepresentable. My problem is, that the init method of the UIViewRepresentable is called 6 times when the view is opened. Which means the WKWebView is initialised 6 times and all my initialisation code (setting JS callbacks, ...) is called 6 times. I added print statements to the init functions of the root view MyWebView and the subview WebView (the UIViewRepresentable). The root view init is only called once, but the subview's init is called 6 times. Is this normal? Or am I doing something wrong?
struct MyWebView: View {
...
ANSWER
Answered 2021-Aug-03 at 15:31You have to write your code assuming that the initializer of the View
in SwiftUI will be called many times.
You write the initialization process in makeUIView(context:)
in this case.
See: https://developer.apple.com/documentation/swiftui/uiviewrepresentable/makeuiview(context:)
For example, I wrote the following code based on this answer. I added a toggle height button to this referenced code.
the -----> makeUIView
log is only output once,
but the -----> webview init
logs are output every time the toggle button is pressed.
QUESTION
I'm attempting to make a POST request to a web page but I got a error in code below:
...ANSWER
Answered 2021-Apr-23 at 23:00This happens when server responds with 400 status code (Bad Request) or with 418 status code (I'm a teapot).
Either server is not configured properly, or it does not expect post requests to that endpoint, or it doesn't like requests with empty body.
You can use curl to validate that server responds with no error to post requests.
QUESTION
i have a problem. I want to create a one time dialog inside initState but i don't know how. I have seen numerous guides but none are for me. I need to create the one time dialog in the initState without dealing with the rest of the code. How can I do? Can anyone help me? I leave the code below
...ANSWER
Answered 2021-Apr-18 at 16:26You could invoke your dialog in the build method as @ProblematicDude pointed out
QUESTION
I am recently approaching flutter and I encounter this doubt / problem, I would like to transform this class that opens a link when submitting the textfield
into a class that once opened opens that link directly. How can I do? I tried to remove the onSubmitted()
but every time it gives me syntax errors.
Can anyone help me by guiding me in the resolution? I would just like to remove onSubmitted()
and open that link when accessing the EmptyTabState
class. Thanks for the help ^^
ANSWER
Answered 2021-Apr-15 at 10:35Call openNewTab method in the initState method:
QUESTION
I have a problem. I have been approaching flutter for a few days and I don't understand how to solve my doubt. Currently (see below) the code I wrote correctly opens an external url but it does so only when I submit the text field. How can I open that link without submitting the text field? I would like to do this without using flutter_inappwebview because it doesn't allow some features that i have created. Thanks a lot
...ANSWER
Answered 2021-Apr-15 at 19:40Try putting your openNewTab
function above initState()
QUESTION
I am trying to load multiple URLs from drawer menu onDestinationChanged
using ViewModel.
In my WebViewModel
class, below is the setUrl
and getUrl
methods.
ANSWER
Answered 2020-Sep-06 at 16:06You created view model 2 times from activity and fragment I think both objects are different, if you setValue in activity, it won't get affected in the fragment as view model is different. try maintain same object.
QUESTION
This question by gave me the idea to implement the Data Binding Library for the purpose of opening a Link in a Webview-Fragment on click of a Button in a Bottom Sheet Fragment.
I was able to implement the Data Binding as seen in the other Question (Link), but the WebView doesn't load the new URL when a Button is clicked in said Bottom Sheet Fragment. I get the feedback from the console that the Button was clicked and the LiveData was changed though. So, I thought the WebView does reload automatically when the LiveData changes but that doesn't seem to be the case...so I do not see my Error and not sure if I implemented everything correctly.
Hopefully someone can help me.
1. Respective Classes 1.1. WebViewFragment ...ANSWER
Answered 2020-Jul-15 at 10:16I think problem is in scope of life that you provide for viewModel. Currently you code looks like this:
QUESTION
I am trying to implement MVVM in all my app and I am very new to this, so I want to load a webview through my ViewModel, but I don't know the best way how to do this, if also has a progress bar that shows up when my web view is loading.
Here's the code:
...ANSWER
Answered 2020-Jan-22 at 12:19you might not use webview
in viewmodel
look https://developer.android.com/topic/libraries/data-binding/binding-adapters.html
Rules of MVVM
Rule Number One: View should not have any logic in it, not at all! Not even a simple if condition. All logic for the view happens in ViewModel.
Rule Number Two: In response to events view does nothing except notifying view-model by calling a method. View does not pass any view related classes to view model.
Rule Number Three: ViewModel uses live data as the main way to communicate to view!
One of the benefits of MVVM is that ViewModel doesn’t have to know anything about the View and has no reference to View classes! Instead, it uses the reactive programming paradigm, so View can still observer the data and be notified about the changes.
Rule Number Four: View can call view-model whenever it needs something. ViewModel can provide helper methods for the view.
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