Show random string

Question

i am trying to display a random string each time a button is pressed from a set of strings defined in strings.xml . this is an example of the strings ID\'s

&         


        

Answer 1

You can define your strings in an array which will help simplify this task (res/values/array.xml):

 
    string 1 
    string 2 
    string 3 
    string 4 
    string 5
 

You can then create an array to hold the strings and select a random string from the array to use:

private String[] myString; 

myString = res.getStringArray(R.array.myArray); 

String q = myString[rgenerator.nextInt(myString.length)];

Example code:

package com.test.test200;

import java.util.Random;

import android.app.Activity;
import android.content.res.Resources;
import android.os.Bundle;
import android.widget.TextView;

public class Test extends Activity {
/** Called when the activity is first created. */

    private String[] myString;
    private static final Random rgenerator = new Random();

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);


    Resources res = getResources();

    myString = res.getStringArray(R.array.myArray); 

    String q = myString[rgenerator.nextInt(myString.length)];

    TextView tv = (TextView) findViewById(R.id.text1);
    tv.setText(q);
}
}