使用另一个文件Kotlin中的变量

Question

if I have 2 Activities and I want to add if condition from a variable on the another activity How can I do that? like if i have the variable that contains 9 numbers in the first layout(first activity) and i want to set if condition in the another one using the x variable that is the question. I am using Android Studio with kotlin.

Answer 1

If the value of your variable doesn't change after you start your second activity, you can use extras to pass the value between them.

class FirstActivity : Activity() {

    var myVariable: Boolean = false

    fun gotoSecondActivity() {
        val intent = Intent(this, SecondActivity::class.java)
        intent.putExtra("MyVariable", myVariable)
        startActivity(intent)
    }
}

class SecondActivity: Activity() {
    fun getMyVariable(): Boolean {
        if (intent != null) {
            if (intent.extras != null) {
                return intent.extras.getBoolean("MyVariable")
            }
        }
        return false // default
    }
}