How to change background color via java?

Question

Hello I'm a newbie in android development and I am looking forward a way to change the background color.

Here is my code:

super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// View layout = new View(this);
// layout.setBackgroundColor(android.R.color.holo_blue_light);
// View root = layout.getRootView();
// root.setBackgroundColor(android.R.color.holo_green_dark);
View view = this.getWindow().getDecorView();
view.setBackgroundColor(R.color.red);

possible duplicate of [How to set background color of a View](http://stackoverflow.com/questions/2173936/how-to-set-background-color-of-a-view) — Paresh Mayani, May 20 '13 at 13:41

score 2 · Answer 1 · answered May 20 '13 at 13:43

2

The problem is with the syntax view.setBackgroundColor(R.color.red);
Try:

view.setBackgroundColor(Color.RED);

answered May 20 '13 at 13:43

Shreyos Adikari

12,348
19
73
82

1

or getResources.getColor(R.color.Red) – Blackbelt May 20 '13 at 13:47

score 1 · Answer 2 · answered May 20 '13 at 13:44

1

view.setBackgroundResource(R.drawable.example);

answered May 20 '13 at 13:44

rahultheOne

154
1
8

score 0 · Answer 3 · answered Apr 05 '18 at 05:29

0

used this :-

 view.setBackgroundColor(ContextCompat.getColor(context, R.color.color_name))

This will choose the Marshmallow two parameter method or the pre-Marshmallow method appropriately.

answered Apr 05 '18 at 05:29

Ashwani kumar

164
15

How to change background color via java?

3 Answers3