okdialog.kt

import android.os.Bundle 

import androidx.annotation.StringRes 

import androidx.appcompat.app.AlertDialog 

import androidx.core.os.bundleOf 

import androidx.fragment.app.DialogFragment 

import androidx.fragment.app.FragmentManager 

import com.github.githubsearch.R 

  

class OkDialog : DialogFragment() { 

  

    companion object { 

        private const val KEY_TITLE = "key:title" 

        private const val KEY_MESSAGE = "key:message" 

  

        fun newInstance( 

            @StringRes title: Int, 

            message: String 

        ) = OkDialog().apply { 

            arguments = bundleOf( 

                KEY_TITLE to title, 

                KEY_MESSAGE to message 

            ) 

        } 

    } 

  

    private val title by lazy { requireArguments().getInt(KEY_TITLE) } 

    private val message by lazy { requireArguments().getString(KEY_MESSAGE) } 

  

    override fun onCreateDialog(savedInstanceState: Bundle?): AlertDialog = 

        AlertDialog.Builder(requireContext()) 

            .setTitle(title) 

            .setMessage(message) 

            .setNeutralButton(R.string.ok) { _, _ -> } 

            .create() 

  

    fun showOnce(fragmentManager: FragmentManager, tag: String) { 

        if (isStateSaved || fragmentManager.isStateSaved) return 

        with(fragmentManager) { 

            val oldDialog = findFragmentByTag(tag) 

            beginTransaction() 

                .apply { if (oldDialog != null) remove(oldDialog) } 

                .add(this@OkDialog, tag) 

                .commit() 

        } 

    } 

}