I have one Android application were i have one shape and in that i have one solid tag.
I want to make this shape 20% transparent with above color code.
How should i do that?
If the color is represented in hexadecimal, like #424242, then adding two more digits in front of this "number" will represent the transparency, ex: #66424242. (66 in this example)
You can play a bit until arrive at desired effect.
android:color="#66FF0000" is partially transparent red and if you decreasing the value of 6 as 5,4,3 up to 1 as "#56FF0000" ,"#46FF0000","#36FF0000","#26FF0000", the transparent color will becoming thin and the same way if u increase the first number as "#76FF0000","#86FF0000", like that the transparent color becoming thick.so we can arrange the transparency of color ourself. and it is applicable to all type of colors!!
Would something like this work?
android:color="#66FF0000" // Partially transparent red
Taken from https://stackoverflow.com/a/7689776/1391624
I have tried adding two digits to the front of the 'number' e.g. #66424242, this definitely works since I use it on my blog
来源：https://stackoverflow.com/questions/17542775/how-to-make-any-html-color-code-semi-transparent-android