Question 128146 in Android Studio Question posted in
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Android Studio – keyword "it" is showing error in kotlin code

This code was written before inside oncreate it was working fine but when i shifted it down in order to create a function this "it" is showing these errors, i had checked there is no variable like "it"

this is the code

  if (manager.getInt("limitOfBox") > 0) {
        Bloom.with(this)
            .setParticleRadius(5f)
            .setEffector(
                BloomEffector.Builder()
                    .setDuration(1500)
                    .setAnchor(
                        (it.width / 2).toFloat(),
                        (it.height / 2).toFloat()
                    )
                    .build()
            )
            .boom(it)

and these are the errors, "it" is turned red

enter image description here

enter image description here

enter image description here

so please tell me what to write instead of "it" , so that it don’t throw errors.

this is the old code which was working perfectly :-

class LuckyBoxActivity : AppCompatActivity() {

lateinit var binding: ActivityLuckyBoxBinding
lateinit var db: FirebaseFirestore
lateinit var myRepo: MyRepo
lateinit var manager: PrefManager
val activity = this

@SuppressLint("SetTextI18n")
override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    binding = ActivityLuckyBoxBinding.inflate(layoutInflater)
    setContentView(binding.root)
    showProgress()

    var winningCoins = 0
    var limit = 0

    db = FirebaseFirestore.getInstance()
    myRepo = MyRepo(this)
    manager = PrefManager(this)

    loadBanner()




    db.collection("Earning").document("box")
        .addSnapshotListener { value, error ->
            if (error == null) {
                val data = value?.toObject(WatchVideoModel::class.java)
                winningCoins = data?.winningCoins.toString().toInt()
                limit = data?.limit.toString().toInt()

                Log.e("luck Box", "onCreate: $winningCoins")
                Log.e("luck Box", "onCreate: $limit")

                if (manager.getInt("limitOfBox") == 102) {
                    binding.limit.text = "$limit"
                    manager.setInt("limitOfBox", limit)
                } else {
                    binding.limit.text = manager.getInt("limitOfBox").toString()
                }
                dismissProgress()
            }
        }



    binding.giftImg.setOnClickListener {



        val winningAmount = (0..winningCoins).random()

        if (manager.getInt("limitOfBox") > 0) {
            Bloom.with(this)
                .setParticleRadius(5f)
                .setEffector(
                    BloomEffector.Builder()
                        .setDuration(1500)
                        .setAnchor(
                            (it.width / 2).toFloat(),
                            (it.height / 2).toFloat()
                        )
                        .build()
                )
                .boom(it)

            Handler(Looper.getMainLooper()).postDelayed(Runnable {
                binding.giftImg.visibility = View.INVISIBLE
            }, 1000)
            Handler(Looper.getMainLooper()).postDelayed(Runnable {

                manager.setInt("limitOfBox", manager.getInt("limitOfBox") - 1)
                binding.limit.text = manager.getInt("limitOfBox").toString()

                binding.resultText.visibility = View.VISIBLE

                if (winningAmount == 0) {
                    binding.resultText.text =
                        "Oops !! better luck next time..."
                } else {
                    binding.resultText.text = "$winningAmount Coins"
                    myRepo.addCoins(winningAmount.toString().toDouble())
                }
            }, 1500)

        } else {
            showToast("Daily Limit Over")
        }
    }
}

fun loadBanner() {
    val view = BannerView(this@LuckyBoxActivity, constants.banner, UnityBannerSize(320, 50))
    view.load()
    binding.bannerAd.addView(view)
}
companion object {
    private const val TAG = "LuckyBoxActivity"
}

}

Tags:

2

Answers


  1. 0

    it here stands for the view that you want this Bloom Effect on.

    Refer to the example given by the library itself.

     Bloom.with('activity')
 .setParticleRadius(5)
 .setEffector(new BloomEffector.Builder()
     .setDuration(800)
     .setAnchor(view.getWidth() / 2, view.getHeight() / 2)
     .build())
 .boom(view);

    here view is the item in which the effect is to be created.

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  2. 0

    Where you moved your code from most likely was inside a scope function. We can’t tell you what it is without you showing us the code in onCreate where you got it from.

    A very common scope function is the scope funtion let. If you do for example

    val a = "test"
a.let {
    print(it)
}

    then it refers to the variable a. Maybe something like that was used there.

    You can read more about scope functions here

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