build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    ext.kotlin_version = "1.4.32"
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.2.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        mavenCentral()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

app/build.gradle

plugins {
    id 'com.android.application'
    id 'kotlin-android'
}

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.3"

    defaultConfig {
        applicationId "jp.aosystem.localhtmlbrowser"
        minSdkVersion 21
        targetSdkVersion 30
        multiDexEnabled true
        versionCode 5
        versionName "1.4"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        vectorDrawables {
            useSupportLibrary true
        }
    }

    buildTypes {
        release {
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
    buildFeatures {
        viewBinding true
    }
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    implementation 'androidx.core:core-ktx:1.3.2'
    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'com.google.android.material:material:1.3.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    implementation 'com.google.android.gms:play-services-ads:20.1.0'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}

app/src/main/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="jp.aosystem.localhtmlbrowser">

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.LocalHtmlBrowser">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <meta-data
            android:name="com.google.android.gms.ads.APPLICATION_ID"
            android:value="ca-app-pub-0000000000000000~0000000000">
        </meta-data>
    </application>
</manifest>

app/src/main/java/jp/aosystem/localhtmlbrowser/MainActivity.kt

package jp.aosystem.localhtmlbrowser

import android.annotation.SuppressLint
import android.content.Context
import android.content.DialogInterface
import android.content.res.Configuration
import android.os.Build
import android.os.Bundle
import android.os.LocaleList
import android.os.StrictMode
import android.os.StrictMode.VmPolicy
import android.text.InputType
import android.util.DisplayMetrics
import android.view.View
import android.widget.EditText
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import androidx.constraintlayout.widget.ConstraintLayout
import androidx.fragment.app.Fragment
import com.google.android.gms.ads.AdRequest
import com.google.android.gms.ads.AdSize
import com.google.android.gms.ads.AdView
import com.google.android.gms.ads.MobileAds
import jp.aosystem.localhtmlbrowser.databinding.ActivityMainBinding
import java.util.*


class MainActivity : AppCompatActivity() {
    private lateinit var binding: ActivityMainBinding
    private lateinit var viewModel: ConstraintLayout
    private var localeLanguage: String = ""

    //adMob
    private lateinit var adView: AdView     //adMob
    private val adSize: AdSize
        get() {
            val display = windowManager.defaultDisplay
            val outMetrics = DisplayMetrics()
            display.getMetrics(outMetrics)
            val density = outMetrics.density
            var adWidthPixels = this.binding.adContainer.width.toFloat()
            if (adWidthPixels == 0f) {
                adWidthPixels = outMetrics.widthPixels.toFloat()
            }
            val adWidth = (adWidthPixels / density).toInt()
            return AdSize.getCurrentOrientationAnchoredAdaptiveBannerAdSize(this, adWidth)
        }

    companion object {
        private const val AD_UNIT_ID: String = "ca-app-pub-0000000000000000/0000000000"     //adMob
        internal const val SETTINGS: String = "settings"
        internal const val URI: String = "uri"
        internal const val PIN: String = "pin"
        internal const val LOCALE_LANGUAGE: String = "localeLanguage"
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        //setContentView(R.layout.activity_main)
        this.binding = ActivityMainBinding.inflate(layoutInflater)
        this.viewModel = this.binding.root
        setContentView(this.viewModel)
        //
        supportActionBar?.hide()    //タイトルバー非表示
        //adMob
        MobileAds.initialize(this) { }
        this.adView = AdView(this)
        this.binding.adContainer.addView(this.adView)
        loadBanner()
        //
        val builder = VmPolicy.Builder()        //ローカルハイパーリンクを有効にする
        StrictMode.setVmPolicy(builder.build()) //ローカルハイパーリンクを有効にする
        this.replaceFragment(FirstFragment())
    }

    //adMob
    @SuppressLint("MissingPermission")
    private fun loadBanner() {
        this.adView.adUnitId = AD_UNIT_ID
        this.adView.adSize = adSize
        val adRequest = AdRequest
            .Builder()
            //.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
            .build()
        this.adView.loadAd(adRequest)
    }

    fun onClickHome(v: View) {
        this.replaceFragment(FirstFragment())
        recreate()
    }

    fun onClickConfig(v: View) {
        val pin: String = this.loadPin()
        if (pin == "") {
            this.replaceFragment(ConfigFragment())
        } else {
            val editPin = EditText(this)
            editPin.inputType = InputType.TYPE_CLASS_NUMBER
            AlertDialog.Builder(this).apply {
                setTitle("PIN")
                setView(editPin)
                setPositiveButton("OK", DialogInterface.OnClickListener { _, _ ->
                    val inputPin = editPin.text.toString()
                    if (pin == inputPin) {
                        this@MainActivity.replaceFragment(ConfigFragment())
                    }
                })
                setNegativeButton("Cancel", null)
                show()
            }
        }
    }

    override fun onBackPressed() {
        val currentFragment = supportFragmentManager.findFragmentById(R.id.container1)
        if (currentFragment is FirstFragment) {
            if (currentFragment.webViewCanGoBack()) {
                currentFragment.webViewGoBack()
            } else {
                super.onBackPressed()
            }
        }
    }

    //フラグメント差し替え
    private fun replaceFragment(fragment: Fragment) {
        val fragmentManager = supportFragmentManager
        val fragmentTransaction = fragmentManager.beginTransaction()
        fragmentTransaction.replace(R.id.container1, fragment)
        fragmentTransaction.commit()
    }

    //PIN読み出し
    private fun loadPin(): String {
        val pref = this.getSharedPreferences(SETTINGS, Context.MODE_PRIVATE)
        return pref.getString(PIN, "").toString()
    }

    //----------------------------------------------

    //言語設定
    override fun attachBaseContext(base: Context) {
        val pref = base.getSharedPreferences(SETTINGS, Context.MODE_PRIVATE)
        this.localeLanguage = pref.getString(LOCALE_LANGUAGE, "") ?: ""
        val loc: Locale? = if (this.localeLanguage != "") Locale(this.localeLanguage) else null
        if (loc != null) {
            val res = base.resources
            val config = Configuration(res.configuration)
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {    //minSdkVersion 24
                val localeList = LocaleList(loc)
                LocaleList.setDefault(localeList)
                config.setLocales(localeList)
            } else {    //minSdkVersion 17  16はダメ
                config.setLocale(loc)
            }
            super.attachBaseContext(base.createConfigurationContext(config))
        } else {
            super.attachBaseContext(base)
        }
    }

    //----------------------------------------------

}

app/src/main/java/jp/aosystem/localhtmlbrowser/FirstFragment.kt

package jp.aosystem.localhtmlbrowser

import android.app.Activity
import android.content.Context
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.webkit.WebViewClient
import androidx.fragment.app.Fragment
import jp.aosystem.localhtmlbrowser.databinding.FragmentFirstBinding


// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private const val ARG_PARAM1 = "param1"
private const val ARG_PARAM2 = "param2"

/**
 * A simple [Fragment] subclass.
 * Use the [FirstFragment.newInstance] factory method to
 * create an instance of this fragment.
 */
class FirstFragment : Fragment() {
    private var _binding: FragmentFirstBinding? = null
    private val binding get() = _binding!!
    // TODO: Rename and change types of parameters
    private var param1: String? = null
    private var param2: String? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        arguments?.let {
            param1 = it.getString(ARG_PARAM1)
            param2 = it.getString(ARG_PARAM2)
        }
    }

    override fun onCreateView(
            inflater: LayoutInflater, container: ViewGroup?,
            savedInstanceState: Bundle?
    ): View? {
        // Inflate the layout for this fragment
        //return inflater.inflate(R.layout.fragment_first, container, false)
        _binding = FragmentFirstBinding.inflate(inflater, container, false)
        return binding.root
    }

    companion object {
        /**
         * Use this factory method to create a new instance of
         * this fragment using the provided parameters.
         *
         * @param param1 Parameter 1.
         * @param param2 Parameter 2.
         * @return A new instance of fragment FirstFragment.
         */
        // TODO: Rename and change types and number of parameters
        @JvmStatic fun newInstance(param1: String, param2: String) =
                FirstFragment().apply {
                    arguments = Bundle().apply {
                        putString(ARG_PARAM1, param1)
                        putString(ARG_PARAM2, param2)
                    }
                }
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        val uri: String = this.loadUri()
        if (uri == "") {
            val initMessage: String = getString(R.string.initmessage)
            val prefix1: String = """<!doctype html><html><head><meta charset="utf-8">"""
            val prefix2: String = "</head><body>"
            val suffix: String = "</body></html>"
            this.binding.webView1.loadDataWithBaseURL(
                    null,
                    prefix1 + prefix2 + initMessage + suffix,
                    "text/html",
                    "utf-8",
                    null
            )
        } else {
            val activity: Activity? = activity as MainActivity?
            if (activity != null) {
                //this.binding.webView1.settings.domStorageEnabled = true
                this.binding.webView1.settings.allowFileAccess = true       //ファイルアクセス可
                this.binding.webView1.settings.javaScriptEnabled = true
                //this.binding.webView1.settings.setSupportZoom(true)
                this.binding.webView1.settings.displayZoomControls = false  //zoomコントロール非表示
                this.binding.webView1.settings.builtInZoomControls = true   //zoom可
                //this.binding.webView1.settings.loadWithOverviewMode = true
                //this.binding.webView1.settings.useWideViewPort = true
                this.binding.webView1.webViewClient = WebViewClient()   //新しいブラウザを開かない
                //this.binding.webView1.setWebViewClient(object : WebViewClient() {
                //    //新しいブラウザを開かない
                //    override fun shouldOverrideUrlLoading(view: WebView, url: String): Boolean {
                //        return false
                //    }
                //})
                val context: Context = activity.applicationContext
                //this.binding.webView1.loadUrl("file://" + context.getFilesDir() + "/" + uri)
                this.binding.webView1.loadUrl("file://" + context.getExternalFilesDir(null) + "/" + uri)
            }
        }
    }

    // TIPS: fragmentではdestroyされる時にbindingをクリアにする処理が必要
    override fun onDestroyView() {
        super.onDestroyView()
        _binding = null
    }

    //読み出し
    private fun loadUri(): String {
        val activity: Activity? = activity as MainActivity?
        var uri: String = ""
        if (activity != null) {
            val pref = activity.getSharedPreferences(MainActivity.SETTINGS, Context.MODE_PRIVATE)
            uri = pref.getString(MainActivity.URI, "").toString()
        }
        return uri
    }

    fun webViewCanGoBack(): Boolean {
        return this.binding.webView1.canGoBack()
    }

    fun webViewGoBack() {
        this.binding.webView1.goBack()
    }

}

app/src/main/java/jp/aosystem/localhtmlbrowser/ConfigFragment.kt

package jp.aosystem.localhtmlbrowser

import android.app.Activity
import android.content.Context
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.core.app.ActivityCompat.recreate
import androidx.fragment.app.Fragment
import jp.aosystem.localhtmlbrowser.databinding.FragmentConfigBinding

// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private const val ARG_PARAM1 = "param1"
private const val ARG_PARAM2 = "param2"

/**
 * A simple [Fragment] subclass.
 * Use the [ConfigFragment.newInstance] factory method to
 * create an instance of this fragment.
 */
class ConfigFragment : Fragment() {
    private var _binding: FragmentConfigBinding? = null
    private val binding get() = _binding!!
    // TODO: Rename and change types of parameters
    private var param1: String? = null
    private var param2: String? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        arguments?.let {
            param1 = it.getString(ARG_PARAM1)
            param2 = it.getString(ARG_PARAM2)
        }
    }

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        // Inflate the layout for this fragment
        //return inflater.inflate(R.layout.fragment_config, container, false)
        _binding = FragmentConfigBinding.inflate(inflater, container, false)
        return binding.root
    }

    companion object {
        /**
         * Use this factory method to create a new instance of
         * this fragment using the provided parameters.
         *
         * @param param1 Parameter 1.
         * @param param2 Parameter 2.
         * @return A new instance of fragment ConfigFragment.
         */
        // TODO: Rename and change types and number of parameters
        @JvmStatic
        fun newInstance(param1: String, param2: String) =
            ConfigFragment().apply {
                arguments = Bundle().apply {
                    putString(ARG_PARAM1, param1)
                    putString(ARG_PARAM2, param2)
                }
            }
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        val activity: Activity? = activity as MainActivity?
        if (activity != null) {
            val context: Context = activity.applicationContext
            //this.binding.textFilesDir.text = context.getFilesDir().toString() + "/"
            this.binding.textFilesDir.text = context.getExternalFilesDir(null).toString() + "/"
        }
        this.loadConfig()
    }

    // TIPS: fragmentではdestroyされる時にbindingをクリアにする処理が必要
    override fun onDestroyView() {
        super.onDestroyView()
        this.saveConfig()
        _binding = null
    }

    //保存
    private fun saveConfig() {
        val activity: Activity? = activity as MainActivity?
        if (activity != null) {
            activity.getSharedPreferences(MainActivity.SETTINGS, Context.MODE_PRIVATE).edit().apply {
                putString(MainActivity.URI, this@ConfigFragment.binding.editUri.text.toString())
                putString(MainActivity.PIN, this@ConfigFragment.binding.editPin.text.toString())
                var localeLanguage: String = ""
                if (this@ConfigFragment.binding.radioLanguageEn.isChecked) {
                    localeLanguage = "en"
                } else if (this@ConfigFragment.binding.radioLanguageJa.isChecked) {
                    localeLanguage = "ja"
                }
                putString(MainActivity.LOCALE_LANGUAGE, localeLanguage)
                apply()
            }
        }
    }

    //読み出し
    private fun loadConfig() {
        val activity: Activity? = activity as MainActivity?
        if (activity != null) {
            val pref = activity.getSharedPreferences(MainActivity.SETTINGS, Context.MODE_PRIVATE)
            val uri: String = pref.getString(MainActivity.URI, "").toString()
            this.binding.editUri.setText(uri)
            val pin: String = pref.getString(MainActivity.PIN, "").toString()
            this.binding.editPin.setText(pin)
            val localeLanguage: String = pref.getString(MainActivity.LOCALE_LANGUAGE,"").toString()
            when (localeLanguage) {
                "en" -> this.binding.radioLanguageEn.isChecked = true
                "ja" -> this.binding.radioLanguageJa.isChecked = true
                else -> this.binding.radioLanguageSystem.isChecked = true
            }
        }
    }

}

app/src/main/res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/black"
            android:orientation="horizontal">

            <ImageButton
                android:id="@+id/imageButton"
                android:layout_width="32dp"
                android:layout_height="32dp"
                android:layout_weight="1"
                android:background="@android:color/transparent"
                android:contentDescription="Home"
                android:onClick="onClickHome"
                android:paddingTop="6dp"
                android:paddingBottom="6dp"
                android:scaleType="fitCenter"
                app:srcCompat="@drawable/ic_home" />

            <View
                android:id="@+id/divider"
                android:layout_width="1dp"
                android:layout_height="match_parent"
                android:background="@color/cardview_dark_background" />

            <ImageButton
                android:id="@+id/imageButton2"
                android:layout_width="32dp"
                android:layout_height="32dp"
                android:layout_weight="1"
                android:background="@android:color/transparent"
                android:contentDescription="Config"
                android:onClick="onClickConfig"
                android:paddingTop="6dp"
                android:paddingBottom="6dp"
                android:scaleType="fitCenter"
                app:srcCompat="@drawable/ic_gear" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/container1"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical"></LinearLayout>

    </LinearLayout>

    <LinearLayout
        android:id="@+id/ad_container"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintBottom_toBottomOf="parent"></LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/fragment_first.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".FirstFragment">

    <WebView
        android:id="@+id/webView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</FrameLayout>

app/src/main/res/layout/fragment_config.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginTop="5dp"
    tools:context=".ConfigFragment">

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="20dp"
            android:orientation="vertical">

            <TextView
                android:id="@+id/textView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="@string/rootdirectory" />

            <TextView
                android:id="@+id/textFilesDir"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="5dp" />

            <TextView
                android:id="@+id/textView7"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="30dp"
                android:text="@string/toppage" />

            <EditText
                android:id="@+id/editUri"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:ems="10"
                android:inputType="textUri"
                android:importantForAutofill="no" />

            <TextView
                android:id="@+id/textView2"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="5dp"
                android:text="@string/toppage01"
                android:textColor="@android:color/secondary_text_dark" />

            <TextView
                android:id="@+id/textView8"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="5dp"
                android:text="@string/toppage02"
                android:textColor="@android:color/secondary_text_dark" />

            <TextView
                android:id="@+id/textView3"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="5dp"
                android:text="@string/toppage03"
                android:textColor="@android:color/secondary_text_dark"
                android:textSize="12sp" />

            <TextView
                android:id="@+id/textView4"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="30dp"
                android:text="@string/pin" />

            <EditText
                android:id="@+id/editPin"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:ems="10"
                android:inputType="number"
                android:importantForAutofill="no" />

            <TextView
                android:id="@+id/textView5"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="@string/pin01"
                android:textColor="@android:color/secondary_text_dark" />

            <TextView
                android:id="@+id/textView6"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="5dp"
                android:text="@string/pin02"
                android:textColor="@android:color/secondary_text_dark"
                android:textSize="12sp" />

            <View
                android:id="@+id/divider2"
                android:layout_width="match_parent"
                android:layout_height="1dp"
                android:layout_marginTop="30dp"
                android:background="?android:attr/listDivider" />

            <TextView
                android:id="@+id/textLanguage"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="20dp"
                android:text="@string/language"
                android:textColor="?android:attr/textColorPrimary" />

            <RadioGroup
                android:layout_width="match_parent"
                android:layout_height="match_parent" >
                <RadioButton
                    android:id="@+id/radioLanguageSystem"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/languageSystem" />
                <RadioButton
                    android:id="@+id/radioLanguageEn"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/languageEn" />
                <RadioButton
                    android:id="@+id/radioLanguageJa"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/languageJa" />

            </RadioGroup>

            <View
                android:id="@+id/divider3"
                android:layout_width="match_parent"
                android:layout_height="1dp"
                android:layout_marginTop="10dp"
                android:background="?android:attr/listDivider" />


            <Space
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="150dp" />

        </LinearLayout>
    </ScrollView>

</FrameLayout>