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 previewView.afterMeasured {
     val autoFocusPoint = SurfaceOrientedMeteringPointFactory(1f, 1f)
             .createPoint(.5f, .5f)
     try {
         val autoFocusAction = FocusMeteringAction.Builder(
             autoFocusPoint,
             FocusMeteringAction.FLAG_AF
         ).apply {
             //start auto-focusing after 2 seconds
             setAutoCancelDuration(2, TimeUnit.SECONDS)

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// Create a listener with a callback invoked when a gesture event has occurred
val listener = object : ScaleGestureDetector.SimpleOnScaleGestureListener() {
    override fun onScale(detector: ScaleGestureDetector): Boolean {
        // Get the current camera zoom ratio
        val currentZoomRatio: Float = cameraInfo.zoomRatio.value ?: 1F
      
        // Get by how much the scale has changed due to the user's pinch gesture
        val delta = detector.scaleFactor
      
        // Update the camera's zoom ratio

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/* Copyright 2012 Charles Harley
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

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inline fun <reified T : Any> SharedPreferences.get(key: String, defaultValue: T? = null): T? {
    val value = when (T::class) {
        String::class -> getString(key, defaultValue as? String) as T?
        Int::class -> getInt(key, defaultValue as? Int ?: -1) as T?
        Long::class -> getLong(key, defaultValue as? Long ?: -1L) as T?
        Float::class -> getFloat(key, defaultValue as? Float ?: -1f) as T?
        Boolean::class -> getBoolean(key, defaultValue as? Boolean ?: false) as T?
        else -> throw IllegalArgumentException("Unsupported type: ${T::class.java}")
    }
    return value

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import android.content.res.Resources

// Convert px to dp
val Int.dp: Int
    get() = (this / Resources.getSystem().displayMetrics.density).toInt()

//Convert dp to px
val Int.px: Int
    get() = (this * Resources.getSystem().displayMetrics.density).toInt()
    

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import android.view.View

fun View.gone() = run { visibility = View.GONE }

fun View.visible() = run { visibility = View.VISIBLE }

fun View.invisible() = run { visibility = View.INVISIBLE }

infix fun View.visibleIf(condition: Boolean) =
    run { visibility = if (condition) View.VISIBLE else View.GONE }

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import android.app.Activity
import android.widget.Toast
import androidx.annotation.StringRes
import androidx.fragment.app.Fragment

fun Fragment.toast(message: String) {
    Toast.makeText(requireContext(), message, Toast.LENGTH_LONG).show()
}

fun Fragment.toast(@StringRes message: Int) {

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import android.app.Activity
import android.view.View
import android.view.inputmethod.InputMethodManager
import androidx.fragment.app.Fragment

fun Activity.hideKeyboard() {
    val imm: InputMethodManager =
        getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
    val view = currentFocus ?: View(this)
    imm.hideSoftInputFromWindow(view.windowToken, InputMethodManager.HIDE_NOT_ALWAYS)

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import java.text.SimpleDateFormat
import java.util.*

fun String.toDate(format: String = "yyyy-MM-dd HH:mm:ss"): Date? {
    val dateFormatter = SimpleDateFormat(format, Locale.getDefault())
    return dateFormatter.parse(this)
}

fun Date.toStringFormat(format: String = "yyyy-MM-dd HH:mm:ss"): String {
    val dateFormatter = SimpleDateFormat(format, Locale.getDefault())

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import android.util.Log

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