CODEWITHSUNDEEP
javaandroidarraysrandomgenerator
Mark Smith
Mark Smith

Reputation: 21

How to generate random events in android?

I have a an array of objects and would like to be able to randomly choose one from the list when a button is pressed. How would you do that in Android?

Upvotes: 2

Views: 1241

Answers (3)

Octavian Helm
Octavian Helm

Reputation: 39604

Do something like this inside your onClickListener

Random rand = new Random();
int selector = rand.nextInt(yourList.length);
yourList.get(selector);

Something like that.

EDIT: Actually if it is an ArrayList then it will be more like this

Random rand = new Random();
int selector = rand.nextInt(yourList.size());
yourList.get(selector);

Upvotes: 5

Marcus Johansson
Marcus Johansson

Reputation: 2667

Is this something you are looking for?

Random r = new Random();
E element;
int rand = r.nextInt(array.length);
element = array[rand];

Upvotes: 0

Unoti
Unoti

Reputation: 1293

I use java.util.random.

It's basically plain java at this point. You can use java.util.nextInteger().

Upvotes: 0

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