CODEWITHSUNDEEP
androidkotlinmultiline
AleksiMMM
AleksiMMM

Reputation: 3

Kotlin: Trying to print multiple line with Kotlin

Im beginner with Kotlin / Java. I've tried to make a mobile app where the idea is simple: one button that prints current time to a text table and every press of a button prints new line.

I managed to make the button to print the current line, but when I press the button again it overwrites the time printed earlier.

Currently my code looks like this:

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    val CryButton = findViewById<Button>(R.id.CryButton)
    val CryTable = findViewById<TextView>(R.id.CryTable)


    CryButton.setOnClickListener {
        val current = LocalDateTime.now()
        val formatter = DateTimeFormatter.ofPattern("hh-mm")
        val formatted = current.format(formatter)

        CryTable.text = formatted.toString()

I have no idea how to make the code remember the last printed text and I can't find any solutions on the web.

Upvotes: 0

Views: 2017

Answers (3)

android bite
android bite

Reputation: 74

Please try with take old time in one variable and when you come to print new time, concat new time with old time with \n, It will work.

Upvotes: 0

SteelToe
SteelToe

Reputation: 2577

What you need to change is instead of just replacing the text of the TextView you have to add a new line to it.

The solution to do this is to replace this line CryTable.text = formatted.toString() with this line CryTable.text = CryTable.text + "\n" + formatted.toString()

This will make it that your text view keeps the old text, add a new line to it, and then adds the new text.

Hope this helps.

Upvotes: 2

Naresh NK
Naresh NK

Reputation: 1066

Use append -

val CryButton = findViewById<Button>(R.id.CryButton)
val CryTable = findViewById<TextView>(R.id.CryTable)

CryTable.text = ""

CryButton.setOnClickListener {
val current = LocalDateTime.now()
val formatter = DateTimeFormatter.ofPattern("hh-mm")
val formatted = current.format(formatter)

CryTable.append(formatted.toString())

Upvotes: 0

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