Pass variable value to class (NOT intent) from home activity

Question

I need to update a variable (via setter, I think) in a class that is not the intent class of a button. I need to set c to a given value in Creator from the Home activity. The chosen activity will then use Item Creator.

Home Activity:

    int c;

    public void setC(int c) {
        this.c = c;
    }

    public void one(View view) {
        setC(1);
        Intent intent = new Intent(this, One.class);
        startActivity(intent);
    }

    public void two(View view) {
        setC(2);
        Intent intent = new Intent(this, Two.class);
        startActivity(intent);
    }

    public void three(View view) {
        setC(3);
        Intent intent = new Intent(this, Three.class);
        startActivity(intent);
    }

    public void four(View view) {
        setC(4);
        Intent intent = new Intent(this, Four.class);
        startActivity(intent);
    }

    public int getC() {
        return c;
    }

}

Class I am trying to pass c to:

public class Creator{
    HomeActivity home = new HomeScreenActivity();
    private int c = home.getC();

If I manually change c's value...

int c = 3;

... the class I want to receive it gets it fine. The issue seems to be getting the buttons to setC().

Thank you for any advice!

`new HomeScreenActivity`... No, bad.. NEVER make a `new` Activity — OneCricketeer, May 28 '17 at 06:46
What do you have against intent extras? Because that is the clearest solution to what I think you're doing — OneCricketeer, May 28 '17 at 06:47
use Shared Preference to store "c" value, then on Creator class retrieve that value from Shared Preference. — Solaiman Hossain, May 28 '17 at 06:50

score 1 · Answer 1 · edited Jun 20 '20 at 09:12

1

As far as your original question, I'd suggest using intents:

What's the best way to share data between activities?
cricket_007 is correct: use startActivity(), not "new HomeScreenActivity()":

https://developer.android.com/training/basics/firstapp/starting-activity.html

edited Jun 20 '20 at 09:12

Community

1
1

answered May 28 '17 at 06:52

paulsm4

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Pass variable value to class (NOT intent) from home activity

1 Answers1