How to make a background 20% transparent on Android

Question

How do I make the background of a Textview about 20% transparent (not fully transparent), where there is a color in the background (i.e. white)?

Answer 1

Use the below code for black:

<color name="black">#000000</color> 

Now if I want to use opacity then you can use the below code:

 <color name="black">#99000000</color> <!-- 99 is for alpha and others pairs zero's are for R G B --> 

And below for opacity code: and all opacity level here

Hex Opacity Values

100% — FF 95% — F2 90% — E6 85% — D9 80% — CC 75% — BF 70% — B3 65% — A6 60% — 99 55% — 8C 50% — 80 45% — 73 40% — 66 35% — 59 30% — 4D 25% — 40 20% — 33 15% — 26 10% — 1A 5% — 0D 0% — 00 

If you always to forget what code for transparency then you must have to see below link and no worry about to remember anything regarding transparent code :-

https://github.com/duggu-hcd/TransparentColorCode

textviewHeader.setTextColor(Color.parseColor(ColorTransparentUtils.transparentColor(R.color.border_color,10)));