Set Background color programmatically [duplicate]

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?

Waits

What is color.white? – Actualize

Answer 1

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"));

Portfolio

Answer 2

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)); 

Rhythmandblues

getResources().getColor() is deprecated – Baking

in AppCompatActivity you can just use context.getColor() or this.getColor - in fragments you can use getActivity().getColor() – Chinchin

Answer 3

You can use

 root.setBackgroundColor(0xFFFFFFFF);

or

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

Strawn

root.setBackgroundColor(Color.RED); also – Seppuku

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. – Junkie

@Aroth 0xAARRGGBB. – Amphibiotic

Answer 4

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));

Margaritamargarite

in kotlin root.setBackgroundColor(ContextCompat.getColor(activity?.applicationContext!!, R.color.white)); – Ap

Answer 5

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.

Gilbertina

Answer 6

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));

Awfully

Answer 7

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.

Argillaceous

This has been deprecated. – Grandiloquence

Answer 8

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);
}

Supereminent