How to set shape s opacity

Question

I already know how to set the opacity of the background image but I need to set the opacity of my shape object   In my Android app  I have it like this    and I want to make this black area a bit transparent  like here  for example I can see circles though this  Welcome          Here is my shape code    lt  xml version  1 0  encoding  UTF-8   gt   lt shape xmlns android  http   schemas android com apk res android      android id    id shape my   gt       lt stroke android width  4dp  android color   636161    gt       lt padding android left  20dp          android top  20dp          android right  20dp          android bottom  20dp    gt       lt corners android radius  24dp    gt   lt  shape gt    How can I do that

User · Answer

use this code below as progress xml    lt layer-list xmlns android  http   schemas android com apk res android  gt        lt item android id   android id background  gt           lt shape gt               lt corners android radius  5dip    gt               lt gradient                     android startColor   ff9d9e9d                      android centerColor   ff5a5d5a                      android centerY  0 75                      android endColor   ff747674                      android angle  270                gt           lt  shape gt       lt  item gt        lt item android id   android id secondaryProgress  gt           lt clip gt               lt shape gt                   lt solid android color   00000000    gt               lt  shape gt           lt  clip gt       lt  item gt        lt item android id   android id progress  gt           lt clip gt               lt shape gt                   lt solid android color   00000000    gt               lt  shape gt           lt  clip gt       lt  item gt    lt  layer-list gt    where     progress  is current progress before the thumb and  secondaryProgress  is the progress after thumb  color   00000000  is a perfect transparency NOTE  the file above is from default android res and is for 2 3 7  it is available on android sources at  frameworks base core res res drawable progress horizontal xml  For newer versions you must find the default drawable file for the seekbar corresponding to your android version    after that use it in the layout containing the xml    lt SeekBar     android id    id myseekbar              android progressDrawable   drawable progress        gt    you can also customize the thumb by using a custom icon seek thumb png   android thumb   drawable seek thumb

User · Answer

In general you just have to define a slightly transparent color when creating the shape  You can achieve that by setting the colors alpha channel   FF000000 will get you a solid black whereas  00000000 will get you a 100  transparent black  well it isn t black anymore obviously   The color scheme is like this  AARRGGBB there A stands for alpha channel  R stands for red  G for green and B for blue  The same thing applies if you set the color in Java  There it will only look like 0xFF000000  UPDATE In your case you d have to add a solid node  Like below   lt  xml version  quot 1 0 quot  encoding  quot UTF-8 quot   gt   lt shape xmlns android  quot http   schemas android com apk res android quot      android id  quot   id shape my quot  gt       lt stroke android width  quot 4dp quot  android color  quot  636161 quot    gt       lt padding android left  quot 20dp quot          android top  quot 20dp quot          android right  quot 20dp quot          android bottom  quot 20dp quot    gt       lt corners android radius  quot 24dp quot    gt       lt solid android color  quot  88000000 quot    gt   lt  shape gt   The color here is a half transparent black

User · Answer

Use this one  I ve written this to my app    lt  xml version  1 0  encoding  utf-8   gt   lt  --  res drawable rounded edittext xml -- gt   lt shape xmlns android  http   schemas android com apk res android      android shape  rectangle  android padding  10dp  gt       lt solid android color   882C383E   gt       lt corners         android bottomRightRadius  5dp          android bottomLeftRadius  5dp          android topLeftRadius  5dp          android topRightRadius  5dp   gt   lt  shape gt

[android] How to set shape's opacity?

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