it seems to me, that the MediaActions for skipToNext and skipToPrevious in the audio_service package for flutter internally do not trigger the corresponding methods, but trigger the Click-Event with the MediaButton-Value, that would be used for skipping, instead.
This might not be a problem for most use-cases, but since I would like to implement custom behavior for click-events, I wonder why these MediaActions do not just properly trigger the corresponding skipToNext/Previous methods instead by default.
Is this behvaior on purpose? And if so, why is this or how could I change it for me? I couldn't figure out the code where this behavior is defined.
Any help on this is very appreciated!
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Please Help to create this design with slider.
You can use a package like audio_waveforms in flutter.
https://pub.dev/packages/audio_waveforms
I haven't tested it. Although it looks like it can do the job.
Im using the SearchDelegate Flutter class. It automatically opens the keyboard when I use the showSearch Method.
I figured that I could close it right away within one of the overwritten Methods. But I don't want it to pop-up in the first place. Only when taping the search bar.
I know that the SearchDelegate class has a _focusNode attribute but I don't know how to work with it.
Any ideas? Thanks in advance.
As of today (december 2022), going strictly by your question : no, you can't.
Dart fields with a leading underscore _ are not just a naming convention, they allow to mark fields as private. Such fields will only be available to :
The declaring .dart file, when declared at top-level.
The parent Dart object, when declared at scope-level.
Thus, your code does not have access to the _focusNode field, nor the _SearchPageRoute<T>, _SearchPage<T> or _SearchPageState<T> classes.
In conclusion, you can either deal with this limitation or create your own custom implementation of this search page. You could either build it from scratch, or by forking the existing showSearch implementation and modifying it to fit your needs.
I currently try to solve the following problem: I create a slider and a parameter during runtime inside of an agent. Now I would like to link the slider to the parameter. However, I am not able to find API code to solve this in a straightforward manner. I`ve looked through the Java interface. It seems that I need to add this function manually as a function executeShapeControlAction(). I try to avoid writing code directy in the JAVA interface. So I am curious about the easiest ways to connect a during runtime created slider with an already existing parameter.
Thank you!
Every parameter generates a "set_" function for you. Assume your parameter is called myParam. Then you can change it at runtime by calling set_myParam(somevalue).
Use that in your slider action as set_myParam(value) and your slider value will change the parameter.
cheers
I understand the general approach to building UI layouts using Flutter. However, I'm still unclear which classes or UI widgets require a .build() method when I'm creating my own vs. using the defaults generated by the project.
I haven't found a clear explanation yet - even in the Flutter tutorials. They all seem to just gloss over how "the build method takes a BuildContext" and then go on to the next subject without explaining further.
Does anyone have a succinct explanation of the build method and when it is or isn't needed? And more specifically: what does it actually do?
build() method describes the part of the user interface represented by this widget.
The framework calls this method in a number of different situations:
After calling initState.
After calling didUpdateWidget.
After receiving a call to setState.
After a dependency of this State object changes (e.g., an InheritedWidget referenced by the previous build changes).
After calling deactivate and then reinserting the State object into the tree at another location.
You can find more Here
TLDR: The build methode is used to create a new widget tree by placing the Widget reurned in the page tree. This method is essentially called when you create or update the widget (by calling setState((){})
Hi I have a JFrame class that I update based on information I recieve from another class. I have created an update method within the JFrame which I use to update the different objects on the page. But my Question is is that the correct thing to do?
You can make it however you want, there is no "right" way. It's all a matter of preference. Personally, I like that way of doing it. In almost all of my GUI's I have a method called "update()" or something similar.
its depends on how updates are being triggered, but using event-listeners and actionCommands might be helpful. I don't necessarily like this methods but it is convenient.