android - 如何在Android上使背景20％透明(How to make a background 20% transparent on Android)

Question

我如何使Textview的背景大约20％透明（不完全透明），背景中是否有颜色（即白色）？

  ask by Adham translate from so

Answer 1

Use the below code for black:

(将以下代码用于黑色：)

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

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

(现在，如果我要使用不透明度，则可以使用以下代码：)

 <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

(以下是不透明度代码：以及此处的所有不透明度级别)

Hex Opacity Values (十六进制不透明度值)

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 :-

(如果您始终忘记透明的代码，则必须查看以下链接，而不必担心记住任何有关透明代码的内容：)

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

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

textviewHeader.setTextColor(Color.parseColor(ColorTransparentUtils.transparentColor10(R.color.border_color)));