How to use TweenAlpha?

[Kolyunya]

Hello!
I am using NGUI 3.0.8 f7.
I want to tween the alpha of a game object. I try to place the following code int the object script:

1.        TweenAlpha tweenAlpha = this.gameObject.AddComponent<TweenAlpha>();
2.         tweenAlpha.from = 1;
3.         tweenAlpha.to = 0;
4.         tweenAlpha.duration = 0.3f;
5.  

When I try to run the program only one child of the game object is being tweened. The object itself is not being tweened.
What am I doing wrong?
Thank you for your help!

[Cripple]

Hi, here is the documentation about tweens : http://www.tasharen.com/forum/index.php?topic=6760.0

If you want to start to tween the alpha of a widget by code, you have to use this :

TweenAlpha.Begin(gameObject, 0.3f, 0.0f);

[Kolyunya]

Cripple, thank you for your answer. I've tried the code you've posted and the result is very same. Only one of the game object's children alpha tweens. The object's alpha is not tweened.
No errors are produced.

[Cripple]

Don't you have another script which could affect the alpha of the game object, such as 'AnimatedAlpha' ?

[Kolyunya]

No, this is a game object with only one script (component)...
The game object has some children and only one of them is being tweened...

[Kolyunya]

And if I switch TweenAlpha to TweenScale, the whole game object scales successfully, not just one of it's children.

[Cripple]

The game object that you want to tween must have a component UIWidget or at least a component which inherits from UIWidget (such as UISprite, UILabel etc ...)

What kind of object do you want to hide ?

[Kolyunya]

Thank you for an answer. I've just added a "UIWidget" component to the object I want to tween and it now tweens as expected.

The strage thing is that TweenScale works without "UIWidget"...

[Cripple]

This is not strange, this is the normal behaviour. TweenScale tweens the scale of the Transform component of your gameObject (every gameObject has a Transform).

TweenAlpha tweens the alpha value of UIWidget, if you don't have this behaviour on a gameObject, you just can't tween it.

It is like if you wanted to get an haircut at the hairdresser while you are bald.

[Kolyunya]

Cripple, thank you for your help! I used to think each game object has an alpha.

[matdru]

Oh god, had exact same issue, now i feel like an idiot since it's quite obvious ^^

[ArenMook]

It is like if you wanted to get an haircut at the hairdresser while you are bald.

Lol, Cripple