Set Background color programmatically

Question

I try to set background color programmatically but when I set every one of my colors, the background being black but with any color background being white like the application theme.

View someView = findViewById(R.id.screen);
View root = someView.getRootView();
root.setBackgroundColor(color.white);

Can you see the code?

score 234 · Answer 1 · edited Aug 12 '16 at 22:07

234

I didn't understand your question ... what do you mean by "when i set every one of my colour"? try this (edit: "#fffff" in original answer changed to "#ffffff"

  yourView.setBackgroundColor(Color.parseColor("#ffffff"));

edited Aug 12 '16 at 22:07

hBrent

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answered May 07 '14 at 12:43

M.Khouli

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score 145 · Answer 2 · edited Oct 18 '16 at 12:41

145

you need to use getResources() method, try to use following code

View someView = findViewById(R.id.screen);
View root = someView.getRootView();
root.setBackgroundColor(getResources().getColor(color.white));

Edit::

getResources.getColor() is deprecated so, use like below

 root.setBackgroundColor(ContextCompat.getColor(this, R.color.white));

edited Oct 18 '16 at 12:41

King of Masses

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answered May 07 '14 at 12:45

Sainath Patwary karnate

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getResources().getColor() is **deprecated** – forsberg Jun 13 '16 at 15:23
1

in AppCompatActivity you can just use context.getColor() or this.getColor - in fragments you can use getActivity().getColor() – Patric Feb 01 '17 at 01:14

score 46 · Answer 3 · answered May 07 '14 at 12:41

46

You can use

 root.setBackgroundColor(0xFFFFFFFF);

or

 root.setBackgroundColor(Color.parseColor("#ffffff"));

answered May 07 '14 at 12:41

Piyush

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root.setBackgroundColor(Color.RED); also – Zar E Ahmer Jan 13 '15 at 10:54
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If using the first example, which bytes map to which color components? For instance, is it `0xRRGGBBAA`, or `0xAARRGGBB`, or maybe `0xBBGGRRAA` or perhaps `0xXXRRGGBB`? Doesn't really matter if you're doing white and black, but for basically any other color it's necessary to know this information. – aroth Aug 19 '16 at 05:25
1

@Aroth `0xAARRGGBB`. – Lorne Laliberte Sep 27 '16 at 20:21

score 37 · Answer 4 · answered Apr 15 '16 at 16:15

37

The previous answers are now deprecated, you need to use ContextCompat.getColor to retrieve the color properly:

root.setBackgroundColor(ContextCompat.getColor(getActivity(), R.color.white));

answered Apr 15 '16 at 16:15

Yoann Hercouet

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in kotlin root.setBackgroundColor(ContextCompat.getColor(activity?.applicationContext!!, R.color.white)); – TapulaRasa Jul 07 '21 at 14:40

score 28 · Answer 5 · answered Jan 06 '17 at 05:28

If you just want to use some of the predefined Android colors, you can use Color.COLOR (where COLOR is BLACK, WHITE, RED, etc.):

myView.setBackgroundColor(Color.GREEN);

Otherwise you can do as others have suggested with

myView.setBackgroundColor(ContextCompat.getColor(getActivity(), R.color.myCustomGreen));

I don't recommend using a hex color directly. You should keep all of your custom colors in colors.xml.

score 20 · Answer 6 · edited Jan 15 '18 at 11:38

20

This must work:

you must use getResources().getColor(R.color.WHITE) to get the color resource, which you must add in the colors.xml resource file

View someView = findViewById(R.id.screen);

someView.setBackgroundColor(getResources().getColor(R.color.WHITE));

edited Jan 15 '18 at 11:38

Gowthaman M

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answered Nov 09 '16 at 14:46

Hatim

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score 2 · Answer 7 · edited Jun 24 '16 at 09:52

2

If you save color code in the colors.xml which is under the values folder,then you should call the following:

root.setBackgroundColor(getResources().getColor(R.color.name));

name means you declare in the <color/> tag.

edited Jun 24 '16 at 09:52

Pugazh

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answered Jun 24 '16 at 09:21

Hay Thi

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This has been deprecated. – lionello Feb 23 '18 at 00:03

score 2 · Answer 8 · answered Oct 11 '16 at 15:53

In my case it wasn't changing the color because I was setting the color in my xml resource.

After delete the line that set the color it worked perfectly programmatically

This is an example I did in a RecyclerView

final Drawable drawable = ContextCompat.getDrawable(mContext, R.drawable.ic_icon).mutate();

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
    holder.image.setBackground(drawable);
} else {
    holder.image.setBackgroundDrawable(drawable);
}

Set Background color programmatically

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