koobas.hobune.stream
Asynchronous load screen
Let's say i have a UI button, and when clicked, this button calls a method which takes a long time (20 seconds) to resolve what it's doing.
I want to display a simple loading screen UI element while the method resolves.
I tried simply enabling a hidden UI element in the code being run, but this doesn't work. The UI element does not appear at all, i assume because the code is not being executed asynchronously and therefore the UI element doesn't get a chance to update its visibility ingame.
What is the best practice approach to this situation?
Best Answer
Without any code, it will be difficult to answer you...
Depending on your setup I would run a coroutine to wait one (or 2) frame(s) so that the loading panel can appear:
public void FunctionToRunOnClick()
{
StartCoroutine( ShowLoadingPanelForHeavyFunction( () => YourHeavyFunction() ) ;
}
public void ShowLoadingPanel()
{
// Show the loading panel
}
public void HideLoadingPanel()
{
// Hide the loading panel
}
public void YourHeavyFunction()
{
// Do your heavy stuff
}
public IEnumerator ShowLoadingPanelForHeavyFunction( System.Action heavyFunction )
{
ShowLoadingPanel();
yield return null ; // Wait a frame to let the panel to be visible on screen
yield return null ; // Eventually wait a 2nd frame
if( heavyFunction != null )
heavyFunction();
HideLoadingPanel();
}
