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

Question

I have an activity called ParticleActivity in my 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 and batteryLevel are declared so that the user input in those fields can be accessed by another class, customUseCase.

public class CustomUseCase extends Test {

public ArrayList<Double> costData = MainActivity.costDATA; //costs that the user enters for 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 this isn't a good way of writing code as it says on Android Studio that I will get a memory leak because the Android components shouldn't be declared as static variables. But this is the only way (from my little knowledge of Android) that I can think off where I can access the user input from the EditText fields in ParticleActivity so that it can be used in my customUseCase class. Can someone give me a good way I can write this out? Thank you.

You problem seemed similar to this please check this link. [Get value from an activity to another class](http://stackoverflow.com/a/23166016/7820465) — RagnorakRage, Apr 07 '17 at 15:03

0xDEADBEEF · Accepted Answer · 2017-04-07T16:32:30.477

1

Try using Intent class and its putExtra method see the docomentation here https://developer.android.com/reference/android/content/Intent.html

example usage

Intent i = new Intent(ParticleActivity.this,CustomUseCase.class)
                     i.putExtra("myShow","one");

then on your CustomUseCase class

Intent i=getIntent();
String show=i.getStringExtra("myShow");

edited Apr 07 '17 at 16:32

answered Apr 07 '17 at 15:32

0xDEADBEEF

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I did this, but when I try retrieve it in the customUseCase class, it doesn't recognize getIntent? – Az Islam Apr 07 '17 at 16:21
@AzIslam I have edited my answer for you if this answer your problem you can accept it as an answer – 0xDEADBEEF Apr 07 '17 at 16:33
getIntent() doesn't work in my CustomUseCase class as it is not an activity, is there another way? – Az Islam Apr 07 '17 at 17:45

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

1 Answers1