java - How to access user input from an activity to another class? -

i have activity called particleactivity in android studio project.

public class particleactivity extends appcompatactivity  {  public final static string extra_message = "pso.algo.message"; private progressdialog pd; private double[] results = {-1.0, -1.0, -1.0}; edittext particles = (edittext) findviewbyid(r.id.particles); edittext iterations = (edittext) findviewbyid(r.id.iterations); static edittext solution; public static double usersolution = double.parsedouble(solution.gettext().tostring()); static edittext battery; public static double batterylevel = double.parsedouble(battery.gettext().tostring()); 

the usersolution , batterylevel declared user input in fields can accessed class, customusecase.

public class customusecase extends test {  public arraylist<double> costdata = mainactivity.costdata; //costs user enters each resource public arraylist<double> costwlan = mainactivity.costwlan; public arraylist<double> costutilities = mainactivity.costutility; public double batterycost = particleactivity.batterylevel; //battery cost user enters public double usersolution = particleactivity.usersolution; //user's predicted solution private int maxiter; private int noparticles; 

i know isn't way of writing code says on android studio memory leak because android components shouldn't declared static variables. way (from little knowledge of android) can think off can access user input edittext fields in particleactivity can used in customusecase class. can give me way can write out? thank you.

try using intent class , putextra method see docomentation here https://developer.android.com/reference/android/content/intent.html

example usage

intent = new intent(particleactivity.this,customusecase.class)                      i.putextra("myshow","one"); 

then on customusecase class

intent i=getintent(); string show=i.getstringextra("myshow");