How To Load Random Line From Text File In Android?

I have this piece of code; Scanner s = new Scanner(getResources().openRawResource(R.raw.game)); try { while (s.hasNextLine()) { System.out.println(s.nextLine());

Solution 1:

You could load the lines into another data structure such as an ArrayList and then use Random to generate a random index number.

Here's some code to put it into an ArrayList:

Scanner s = newScanner(getResources().openRawResource(R.raw.game));
ArrayList<String> list = newArrayList<String>();

try {
    while (s.hasNextLine()) {
        list.add(s.nextLine());      
    }
} finally {
    s.close();
} 

This code will return a random line:

publicstaticStringrandomLine(ArrayList list) {
    return list.get(newRandom().nextInt(list.size()));
}

Solution 2:

First load all of them from file into a String array then randomly pick one of them from that String array.

Solution 3:

lets supose that you did the collecting to the String array lines:

int randomLine = (int)(Math.random()*lines.length);

there you got your random line.

Edit: oh well, you could use just String[]