Universal variable for objects in Android

Question

Hi I have an TextView in my android studio project. I want to access it. I know it can be done through

val myText = findViewById<TextView>(R.id.textView)

but everytime I make new function I need to declare val of myText using above code line. Like This:-

fun onDigit(view: View){
val textView = findViewById<TextView>(R.id.textView)
    textView.append((view as Button).text)
}

fun onClear(view: View){
val textView = findViewById<TextView>(R.id.textView)
    textView.text = ""
}

Is there any way to universally declare it and access it without declaring it in every function?

make it lateinit var class level field

May Rest in Peace
– May Rest in Peace

2021-07-06 11:59:38 +00:00
Commented Jul 6, 2021 at 11:59 — May Rest in Peace
– May Rest in Peace, Commented Jul 6, 2021 at 11:59

Iulian Popescu · Accepted Answer · 2021-07-05 12:38:41Z

1

Yes, you can keep a reference to your view in a property from the activity or fragment. It will look like this:

// Declare the view as property
private lateinit var myText: TextView

// Then in onCreate save a reference to it
override fun onCreate(savedInstanceState: Bundle?) {
     ....
     myText = findViewById<TextView>(R.id.textView)
}

// After this point, you can access the view as any global variable
fun onDigit(view: View) {
    myText.append((view as Button).text)
}

edited Jul 5, 2021 at 12:38

answered Jul 3, 2021 at 5:47

Iulian Popescu

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