NikCapko

import android.util.Log

fun Any?.printToLog(tag: String = "DEBUG_LOG") {
    Log.d(tag, toString())
}

NikCapko

Dialog(context).apply {
    setContentView(R.layout.dialog)
    window?.setBackgroundDrawableResource(R.drawable.bg_dialog)
    findViewById<ImageView>(R.id.ivClose).setOnClickListener { dismiss() }
    findViewById<Button>(R.id.btnTry).setOnClickListener { dismiss() }
}.show()

NikCapko

import android.text.Editable
import android.text.TextWatcher
import android.widget.EditText
import kotlin.math.max
import kotlin.math.min

/**
 * Класс, предназначенный для форматирования тектового ввода в EditText
 * @param editText поле ввода символов
 * @param formatter метод форматирования исходной строки

NikCapko

val ViewGroup.children: Iterable<View>
    get() = (0 until childCount).map { getChildAt(it) }

// use:
linearLayout.children
    .forEachIndexed { _, view ->
        view.setOnClickListener {}
}

NikCapko

public class SimpleTextWatcher implements TextWatcher {

    private BeforeTextChanged beforeTextChanged;
    private OnTextChanged onTextChanged;
    private AfterTextChanged afterTextChanged;

    public SimpleTextWatcher(BeforeTextChanged beforeTextChanged) {
        this.beforeTextChanged = beforeTextChanged;
    }