Data not being passed between activities through Intent

Issue

//In MainActivity
binding.doneButton.setOnClickListener {
            checkValid()
            if (valid){
                val bmi: Double = calculateBmi().round(1)
                val bmr: Double = calculateBmr().round(2)
                Intent(this, DailyActivity::class.java).also{
                    intent.putExtra("EXTRA_BMI", bmi)
                    intent.putExtra("EXTRA_BMR", bmr)
                    startActivity(it)
                }

            }
        }
//In DailyActivity
var bmi = intent.getDoubleExtra("EXTRA_BMI", 0.0)
var bmr = intent.getDoubleExtra("EXTRA_BMR", 0.0)

I want to pass these two Double values bmi and bmr from my MainActivity to DailyActivity. I checked the values and they work fine inside MainActivity. But when I try to pass them to DailyActivity, the default value of 0.0 is being used. I tried intent?.extras?.getDouble("EXTRA_BMI") as well but that's not working either. How can I fix this?

(Btw round is an extension function I found on SO. It works fine. That's not why the code isn't working)

Solution

Inside your also block, by calling intent.putExtra(...) you are altering the current Activity's intent (the one you would access with [email protected]), not the one you just created.

What you want is

Intent(this, DailyActivity::class.java).also{
    it.putExtra("EXTRA_BMI", bmi)
    it.putExtra("EXTRA_BMR", bmr)
    startActivity(it)
}

Answered By - Adrian K