How to make a linearLayout partially transparent in android?

Question

I have a RelativeLayout containing 2 LinearLayouts one of them is partially covering the other. I want to make the part of the LinearLayout on top transparent so I can also see the 2nd LinearLayout knowing that i have 2 images as background for the 2 LinearLayouts.

Answer 1

When we set the color it is like ARGB(Alpha Red Green Blue). You need to change the alpha in the color code to increase or decrease the amount of Transparency :

You can range it from 00 to FF (Hexa Decimal)

For maximum transparency => #00555555 (Here 00 stands for the alpha)

For minimum or no transparency => #FF555555 (Here FF stands for the alpha)

So, for setting the transparency of an ImageView you can code like this:

ImageView image = (ImageView) findViewById(R.id.myImage); image.setAlpha(0.3); 

Also, you can set the alpha for your LinearLayout like this :

LinearLayout ll = (LinearLayout) findViewById(R.id.linearlayout); ll.setAlpha(0.4); 

Answer 2

Use this in your Layout

android:alpha="0.5" 

0.0 is totally transparent, 1.0 is fully opaque.