Android: set color programatically from XML color constants

Question

Trying to set a color which is defined in res/values/colors.xml to an object,

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <drawable name="listViewSelected">@android:color/holo_blue_light</drawable>
  <drawable name="listViewPressed">@android:color/holo_green_light</drawable>
  <drawable name="pagerTabStrip">#2B3333</drawable>
  <!--<drawable name="pagerTabStrip">#353F3E</drawable>-->
  <drawable name="tableHead">#FF444444</drawable>

</resources>

I can not figure out why it is not working, I tried a lot of approaches (getResources(), Color.parseColor(), ...)

How do I set the color "tableHead" e.g. to a TextView?

tv.setBackgroundColor(????);

you want to set colour to the Text of the TextView or background of textview? — Neal Ahluvalia
– Neal Ahluvalia, Commented Apr 23, 2015 at 6:40

Sohaib · Accepted Answer · 2015-04-23 06:43:20Z

22

Color entries should be like this

<color name="tableHead">#FF444444</color>

and use tv.setBackgroundResource(R.color.tableHead);

answered Apr 23, 2015 at 6:43

Sohaib

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1 Comment

prototype0815 Over a year ago

I don´t know why, but I defined my "color" as a "drawable" :-/ you are right, but I have to set the color like this >> getResources().getColor(R.color.tableHead) <<

Jain Nidhi · Accepted Answer · 2015-04-23 06:47:27Z

10

Use,..

Color.parseColor("#bdbdbd");

like,

mTextView.setTextColor(Color.parseColor("#bdbdbd"));

OR......................

Get a handle to the root layout used, then set the background color on that. The root layout is whatever you called setContentView with.

// Now get a handle to any View contained // within the main layout you are using

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

// Find the root view

 View root = someView.getRootView()

// Set the color

  root.setBackgroundColor(getResources().getColor(android.R.color.red));

answered Apr 23, 2015 at 6:47

Jain Nidhi

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Comments

Neal Ahluvalia · Accepted Answer · 2015-04-23 06:45:27Z

4

tv.setTextColor(getResources().getColor(R.color.tableHead));

And guess what your colors.xml should be like this

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="tableHead">#FF444444</color>
</resources>

answered Apr 23, 2015 at 6:45

Neal Ahluvalia

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Comments

A.R. · Accepted Answer · 2015-04-23 06:45:27Z

2

Your color.xml should look like this:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="tableHead">#FF444444</color>
</resources>

How you will use this color to set in textview: Like this

tv.setBackgroundColor(getResources().getColor(R.color.tableHead));

answered Apr 23, 2015 at 6:45

A.R.

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Comments

Krupa Patel · Accepted Answer · 2015-04-23 06:44:38Z

1

Try something like this:

tv.setBackgroundResource(Color.parseColor("#ffffff"));

answered Apr 23, 2015 at 6:44

Krupa Patel

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Comments

Rajen Raiyarela · Accepted Answer · 2015-04-23 06:52:47Z

1

Firstly modify your color.xml as below

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <color name="listViewSelected">@android:color/holo_blue_light</drawable>
  <color name="listViewPressed">@android:color/holo_green_light</drawable>
  <color name="pagerTabStrip">#2B3333</drawable>
  <!--<color name="pagerTabStrip">#353F3E</drawable>-->
  <color name="tableHead">#FF444444</drawable>

</resources>

For setting the textview background color you can do like

tv.setBackgroundColor(R.color.tableHead);

Additionally for setting the textview textcolor you can do like

tv_empty.setTextColor(R.color.tableHead)

answered Apr 23, 2015 at 6:52

Rajen Raiyarela

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Comments

Samrat · Accepted Answer · 2020-08-15 14:36:36Z

0

if there is a color in color constants like

<color name="error_red_color">#f00</color>

then it can be set as following -

tv.setTextColor(ContextCompat.getColor(context, R.color.error_red_color))

or

tv.setTextColor(getResources().getColor(R.color.error_red_color, null))

Other ways are -

tv.setTextColor(Color.RED);

tv.setTextColor(Color.parseColor("#FFFFFF"));

tv.setTextColor(Color.rgb(100,100,100));

answered Aug 15, 2020 at 14:36

Samrat

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