[mono-android] Corrected post - Cannot use StartActivity() from IAnimationListener

[Jonathan Pryor]

On Mar 15, 2011, at 2:44 PM, Michael Reynolds wrote:
> I am trying to convert the java code below to use it in my MonoDroid project.
> 
> fade2.setAnimationListener(new AnimationListener() {
>         public void onAnimationEnd(Animation animation) {
>             // The animation has ended, transition to the Main Menu screen
>             startActivity(new Intent(MySplashActivity.this, MyMenuActivity.class));
>             MySplashActivity.this.finish()
> ;
>         }
> 
> I converted the Java code above to the C# code below:
> 
> fade2.SetAnimationListener(new AnimationListener(this));

This is right.

> And the C# AnimationListener:
> 
> private class AnimationListener : Activity, Animation.IAnimationListener

This isn't. Don't inherit from Activity, inherit from Java.Lang.Object:

	private class AnimationListener : Java.Lang.Object, Animation.IAnimationListener

>     {
>         private readonly Context _context;

This should be an Activity; no point in forcing a runtime exception when we can check this at compile time...

> 
>         public AnimationListener(Context context)

Should also take an Activity.

>         {
>             _context = context;
>         }
> 
>         public void OnAnimationEnd(Animation animation)
>         {
>             //The animation has ended, transition to the Main Menu screen
>             StartActivity(new Intent(_context, typeof (QuizMenuActivity)));

Should thus be:

	_context.StartActivity(new Intent(_context, typeof(QuizMenuActivity));
	_context.Finish ();

Does that work for you?

 - Jon