setAlpha not working on ViewGroup instance

Asked Sep 09 '16 at 16:51

Active Sep 09 '16 at 17:06

Viewed 778 times

setAlpha has no effect on ViewGroup instances in API levels 14(ICS)-19(KitKat) even though it was introduced in API level 11. Any ideas why?

I've even tried using the support library but that doesn't work either.

Example:

LayoutInflater layoutInflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
ViewGroup view = (ViewGroup) layoutInflater.inflate(R.layout.my_layout, null);
view.setAlpha(0.5f);

It works perfectly fine for API levels 21+ but not for API levels 14-19.

PS, I haven't tested below API level 14.

edited Sep 09 '16 at 17:06

asked Sep 09 '16 at 16:51

olfek

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I'm having a similar issue. Find any solution? – Nic Capdevila Dec 02 '16 at 22:29
No, it may be a bug in older android versions. – olfek Dec 03 '16 at 11:14
Got the same problem atm... – Denny Apr 12 '17 at 18:47
@Denny If you find a solution, remember to post it here! – olfek Apr 12 '17 at 18:51
You too @NicCapdevila – olfek Apr 12 '17 at 18:52
@Denny Just seen some other questions regarding this problem, try this on your problem (i cant test it atm). Some people cant set the alpha of the view background on api 21+ in the same way we cant set the alpha of the view itself before api 21. So just a hunch, try and set the alpha of the background for api levels before 21+, see if that works. And let me know if it does! – olfek Apr 12 '17 at 18:57
@sudoman Nope doesn't work =[ – Denny Apr 12 '17 at 19:22
@Denny thanks for trying – olfek Apr 12 '17 at 19:25

setAlpha not working on ViewGroup instance

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