How to output a random color from a set of selected colors in Java? (Android)
android, colors, java, random
Solution
First of all in color.xml define your colors and create array of it.
<?xml version="1.0" encoding="utf-8"?>
<resources>
<item name="blue" type="color">#FF33B5E5</item>
<item name="purple" type="color">#FFAA66CC</item>
<item name="green" type="color">#FF99CC00</item>
<item name="orange" type="color">#FFFFBB33</item>
<item name="red" type="color">#FFFF4444</item>
<item name="darkblue" type="color">#FF0099CC</item>
<item name="darkpurple" type="color">#FF9933CC</item>
<item name="darkgreen" type="color">#FF669900</item>
<item name="darkorange" type="color">#FFFF8800</item>
<item name="darkred" type="color">#FFCC0000</item>
<integer-array name="androidcolors">
<item>@color/blue</item>
<item>@color/purple</item>
<item>@color/green</item>
<item>@color/orange</item>
<item>@color/red</item>
<item>@color/darkblue</item>
<item>@color/darkpurple</item>
<item>@color/darkgreen</item>
<item>@color/darkorange</item>
<item>@color/darkred</item>
</integer-array>
</resources>
Now generate random color like below in `onCreate` method.
int[] androidColors = getResources().getIntArray(R.array.androidcolors);
int randomAndroidColor = androidColors[new Random().nextInt(androidColors.length)];
Lastly set this generated color.
view.setBackgroundColor(randomAndroidColor);
Source taken from here.
Problem
So I want a string to be given a random color any time the user inputs an answer. My issue is that I'm not sure how to make that random color of a string be a color of a specific range. For example, if I wanted the string to be randomly become blue, red, green, pink, white, or brown. Only these colors, none other. So far I have managed a completely random color out of all possible RBG variations using the following code: ``` Random rand = new Random(); int r = rand.nextInt(254)+1; int g = rand.nextInt(254)+1; int b = rand.nextInt(254)+1; int randomColor = Color.rgb(r,g,b); word.setTextColor(randomColor); ``` Though as previously mentioned, this is not what I aim to achieve. Instead of this, I want set colors that can be randomly applied to the string. These are colors that I would pick, then have randomly set as the string color. This sets a completely random color out of a range I do not intend to have. I could end up with 5 variations of blue for example. If anyone could put forward a solution, I'd appreciate it. Thank you.