Add UI

ui/build.gradle

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+/*
+ * SPDX-FileCopyrightText: 2019, microG Project Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-kapt'
+apply plugin: 'kotlin-android-extensions'
+apply plugin: 'maven-publish'
+
+android {
+    compileSdkVersion androidCompileSdk
+    buildToolsVersion "$androidBuildVersionTools"
+    dataBinding {
+        enabled = true
+    }
+
+    defaultConfig {
+        versionName version
+        minSdkVersion Math.max(androidMinSdk, 14)
+        targetSdkVersion androidTargetSdk
+    }
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+    }
+
+    compileOptions {
+        sourceCompatibility = 1.8
+        targetCompatibility = 1.8
+    }
+}
+
+dependencies {
+    implementation project(':api')
+    implementation project(':client')
+
+    implementation "androidx.appcompat:appcompat:$appcompatVersion"
+    implementation "androidx.fragment:fragment:$fragmentVersion"
+    implementation "androidx.recyclerview:recyclerview:$recyclerviewVersion"
+    implementation "androidx.lifecycle:lifecycle-runtime-ktx:$lifecycleVersion"
+    implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycleVersion"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlinVersion"
+}
+
+afterEvaluate {
+    publishing {
+        publications {
+            release(MavenPublication) {
+                pom {
+                    name = 'UnifiedNlp UI'
+                    description = 'UnifiedNlp UI library for common configuration fragments'
+                    url = 'https://github.com/microg/UnifiedNlp'
+                    licenses {
+                        license {
+                            name = 'The Apache Software License, Version 2.0'
+                            url = 'http://www.apache.org/licenses/LICENSE-2.0.txt'
+                        }
+                    }
+                    developers {
+                        developer {
+                            id = 'microg'
+                            name = 'microG Team'
+                        }
+                        developer {
+                            id = 'mar-v-in'
+                            name = 'Marvin W.'
+                        }
+                    }
+                    scm {
+                        url = 'https://github.com/microg/UnifiedNlp'
+                        connection = 'scm:git:https://github.com/microg/UnifiedNlp.git'
+                        developerConnection = 'scm:git:ssh://github.com/microg/UnifiedNlp.git'
+                    }
+                }
+
+                from components.release
+            }
+        }
+    }
+}

ui/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2020, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<manifest package="org.microg.nlp.ui">
+
+    <application />
+</manifest>

ui/src/main/kotlin/org/microg/nlp/ui/BackendDetailsFragment.kt

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+package org.microg.nlp.ui
+
+import android.content.ComponentName
+import android.content.Context
+import android.content.Intent
+import android.content.Intent.ACTION_VIEW
+import android.content.pm.PackageManager.GET_META_DATA
+import android.content.res.ColorStateList
+import android.graphics.Color
+import android.os.Bundle
+import android.util.TypedValue
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.annotation.AttrRes
+import androidx.annotation.ColorInt
+import androidx.core.content.ContextCompat
+import androidx.databinding.Observable
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.lifecycleScope
+import kotlinx.coroutines.launch
+import org.microg.nlp.client.UnifiedLocationClient
+import org.microg.nlp.ui.BackendType.GEOCODER
+import org.microg.nlp.ui.BackendType.LOCATION
+import org.microg.nlp.ui.databinding.BackendDetailsBinding
+import java.util.*
+
+class BackendDetailsFragment : Fragment(R.layout.backend_details) {
+
+    fun Double.toStringWithDigits(digits: Int): String {
+        val s = this.toString()
+        val i = s.indexOf('.')
+        if (i <= 0 || s.length - i - 1 < digits) return s
+        if (digits == 0) return s.substring(0, i)
+        return s.substring(0, s.indexOf('.') + digits + 1)
+    }
+
+    fun Float.toStringWithDigits(digits: Int): String {
+        val s = this.toString()
+        val i = s.indexOf('.')
+        if (i <= 0 || s.length - i - 1 < digits) return s
+        if (digits == 0) return s.substring(0, i)
+        return s.substring(0, s.indexOf('.') + digits + 1)
+    }
+
+    @ColorInt
+    fun Context.resolveColor(@AttrRes resid: Int): Int? {
+        val typedValue = TypedValue()
+        if (!theme.resolveAttribute(resid, typedValue, true)) return null
+        val colorRes = if (typedValue.resourceId != 0) typedValue.resourceId else typedValue.data
+        return ContextCompat.getColor(this, colorRes)
+    }
+
+    val switchBarEnabledColor: Int
+        get() = context?.resolveColor(androidx.appcompat.R.attr.colorControlActivated) ?: Color.RED
+
+    val switchBarDisabledColor: Int
+        get() {
+            val color = context?.resolveColor(android.R.attr.textColorSecondary) ?: Color.RED
+            return Color.argb(100, Color.red(color), Color.green(color), Color.blue(color))
+        }
+
+    val switchBarTrackTintColor: ColorStateList
+        get() {
+            val color = context?.resolveColor(android.R.attr.textColorPrimaryInverse)
+                    ?: Color.RED
+            val withAlpha = Color.argb(50, Color.red(color), Color.green(color), Color.blue(color))
+            return ColorStateList(arrayOf(emptyArray<Int>().toIntArray()), arrayOf(withAlpha).toIntArray())
+        }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        val binding = BackendDetailsBinding.inflate(inflater, container, false)
+        binding.fragment = this
+        binding.switchWidget.trackTintList = switchBarTrackTintColor
+        lifecycleScope.launchWhenStarted {
+            val entry = createBackendInfo()
+            binding.entry = entry
+            binding.executePendingBindings()
+            if (entry?.type == LOCATION) {
+                val client = UnifiedLocationClient[entry.context]
+
+                val location = client.getLastLocationForBackend(entry.serviceInfo.packageName, entry.serviceInfo.name, entry.firstSignatureDigest)
+                        ?: return@launchWhenStarted
+                var locationString = "${location.latitude.toStringWithDigits(6)}, ${location.longitude.toStringWithDigits(6)}"
+
+                val address = client.getFromLocation(location.latitude, location.longitude, 1, Locale.getDefault().toString()).singleOrNull()
+                if (address != null) {
+                    val addressLine = StringBuilder()
+                    var i = 0
+                    addressLine.append(address.getAddressLine(i))
+                    while (addressLine.length < 10 && address.maxAddressLineIndex > i) {
+                        i++
+                        addressLine.append(", ")
+                        addressLine.append(address.getAddressLine(i))
+                    }
+                    locationString = addressLine.toString()
+                }
+                binding.lastLocationString = locationString
+                binding.executePendingBindings()
+            }
+        }
+        return binding.root
+    }
+
+    fun onBackendEnabledChanged(entry: BackendInfo) {
+        entry.enabled = !entry.enabled
+    }
+
+    private fun createExternalIntent(packageName: String, activityName: String): Intent {
+        val intent = Intent(ACTION_VIEW);
+        intent.setPackage(packageName);
+        intent.setClassName(packageName, activityName);
+        return intent;
+    }
+
+    private fun startExternalActivity(packageName: String, activityName: String) {
+        requireContext().startActivity(createExternalIntent(packageName, activityName))
+    }
+
+    fun onAboutClicked(entry: BackendInfo) {
+        entry.aboutActivity?.let { activityName -> startExternalActivity(entry.serviceInfo.packageName, activityName) }
+    }
+
+    fun onConfigureClicked(entry: BackendInfo) {
+        entry.settingsActivity?.let { activityName -> startExternalActivity(entry.serviceInfo.packageName, activityName) }
+    }
+
+    private suspend fun createBackendInfo(): BackendInfo? {
+        val activity = activity ?: return null
+        val intent = activity.intent ?: return null
+        val type = BackendType.values().find { it.name == intent.getStringExtra(EXTRA_TYPE) }
+                ?: return null
+        val packageName = intent.getStringExtra(EXTRA_PACKAGE) ?: return null
+        val name = intent.getStringExtra(EXTRA_NAME) ?: return null
+        val serviceInfo = activity.packageManager.getServiceInfo(ComponentName(packageName, name), GET_META_DATA)
+                ?: return null
+        val enabledBackends = when (type) {
+            GEOCODER -> UnifiedLocationClient[activity].getGeocoderBackends()
+            LOCATION -> UnifiedLocationClient[activity].getLocationBackends()
+        }
+        return BackendInfo(activity, serviceInfo, type, lifecycleScope, enabledBackends)
+    }
+
+    companion object {
+        val ACTION = "org.microg.nlp.ui.BACKEND_DETAILS"
+        val EXTRA_TYPE = "org.microg.nlp.ui.BackendDetailsFragment.type"
+        val EXTRA_PACKAGE = "org.microg.nlp.ui.BackendDetailsFragment.package"
+        val EXTRA_NAME = "org.microg.nlp.ui.BackendDetailsFragment.name"
+    }
+}

ui/src/main/kotlin/org/microg/nlp/ui/BackendInfo.kt

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+package org.microg.nlp.ui
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.pm.PackageInfo
+import android.content.pm.PackageManager
+import android.content.pm.ServiceInfo
+import android.graphics.drawable.Drawable
+import android.util.Log
+import androidx.databinding.BaseObservable
+import androidx.databinding.Bindable
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.launch
+import org.microg.nlp.api.Constants
+import org.microg.nlp.client.UnifiedLocationClient
+import java.security.MessageDigest
+import java.security.NoSuchAlgorithmException
+
+private val TAG: String = "ULocUI"
+
+class BackendInfo(val context: Context, val serviceInfo: ServiceInfo, val type: BackendType, val coroutineScope: CoroutineScope, enabledBackends: Array<String>) : BaseObservable() {
+    val firstSignatureDigest = firstSignatureDigest(context, serviceInfo.packageName)
+    val unsignedComponent: String = "${serviceInfo.packageName}/${serviceInfo.name}"
+    val signedComponent: String = "${serviceInfo.packageName}/${serviceInfo.name}/$firstSignatureDigest"
+
+    var enabled: Boolean = enabledBackends.contains(signedComponent) || enabledBackends.contains(unsignedComponent)
+        @Bindable get
+        set(value) {
+            if (field == value) return
+            field = value
+            notifyPropertyChanged(BR.enabled)
+            coroutineScope.launch {
+                val client = UnifiedLocationClient[context]
+                val withoutSelf = when (type) {
+                    BackendType.LOCATION -> client.getLocationBackends()
+                    BackendType.GEOCODER -> client.getGeocoderBackends()
+                }.filterNot { it == unsignedComponent || it.startsWith("$unsignedComponent/") }.toTypedArray()
+                val new = if (value) withoutSelf + signedComponent else withoutSelf
+                try {
+                    when (type) {
+                        BackendType.LOCATION -> client.setLocationBackends(new)
+                        BackendType.GEOCODER -> client.setGeocoderBackends(new)
+                    }
+                } catch (e: Exception) {
+                    Log.w(TAG, "Failed to change backend state", e)
+                    field = !value
+                    notifyPropertyChanged(BR.enabled)
+                }
+            }
+        }
+
+    val appIcon: Drawable by lazy { serviceInfo.loadIcon(context.packageManager) }
+    val name: CharSequence by lazy { serviceInfo.loadLabel(context.packageManager) }
+    val appName: CharSequence by lazy { serviceInfo.applicationInfo.loadLabel(context.packageManager) }
+
+    val backendSummary: String? by lazy { serviceInfo.metaData?.getString(Constants.METADATA_BACKEND_SUMMARY) }
+    val settingsActivity: String? by lazy { serviceInfo.metaData?.getString(Constants.METADATA_BACKEND_SETTINGS_ACTIVITY) }
+    val aboutActivity: String? by lazy { serviceInfo.metaData?.getString(Constants.METADATA_BACKEND_ABOUT_ACTIVITY) }
+
+}
+
+enum class BackendType { LOCATION, GEOCODER }
+
+@Suppress("DEPRECATION")
+@SuppressLint("PackageManagerGetSignatures")
+fun firstSignatureDigest(context: Context, packageName: String?): String? {
+    val packageManager = context.packageManager
+    val info: PackageInfo?
+    try {
+        info = packageManager.getPackageInfo(packageName!!, PackageManager.GET_SIGNATURES)
+    } catch (e: PackageManager.NameNotFoundException) {
+        return null
+    }
+
+    if (info?.signatures?.isNotEmpty() == true) {
+        for (sig in info.signatures) {
+            sha256sum(sig.toByteArray())?.let { return it }
+        }
+    }
+    return null
+}
+
+private fun sha256sum(bytes: ByteArray): String? {
+    try {
+        val md = MessageDigest.getInstance("SHA-256")
+        val digest = md.digest(bytes)
+        val sb = StringBuilder(2 * digest.size)
+        for (b in digest) {
+            sb.append(String.format("%02x", b))
+        }
+        return sb.toString()
+    } catch (e: NoSuchAlgorithmException) {
+        return null
+    }
+}

ui/src/main/kotlin/org/microg/nlp/ui/BackendListFragment.kt

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+package org.microg.nlp.ui
+
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.content.pm.PackageManager.GET_META_DATA
+import android.os.Bundle
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.lifecycleScope
+import androidx.recyclerview.widget.RecyclerView
+import org.microg.nlp.api.Constants.*
+import org.microg.nlp.client.UnifiedLocationClient
+import org.microg.nlp.ui.BackendDetailsFragment.Companion.EXTRA_NAME
+import org.microg.nlp.ui.BackendDetailsFragment.Companion.EXTRA_PACKAGE
+import org.microg.nlp.ui.BackendDetailsFragment.Companion.EXTRA_TYPE
+import org.microg.nlp.ui.databinding.BackendListBinding
+import org.microg.nlp.ui.databinding.BackendListEntryBinding
+
+class BackendListFragment : Fragment(R.layout.backend_list) {
+    val locationAdapter: BackendSettingsLineAdapter = BackendSettingsLineAdapter(this)
+    val geocoderAdapter: BackendSettingsLineAdapter = BackendSettingsLineAdapter(this)
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        val binding = BackendListBinding.inflate(inflater, container, false)
+        binding.fragment = this
+        lifecycleScope.launchWhenStarted { updateAdapters() }
+        return binding.root
+    }
+
+    fun onBackendSelected(entry: BackendInfo) {
+        val intent = Intent(BackendDetailsFragment.ACTION)
+        //intent.`package` = requireContext().packageName
+        intent.putExtra(EXTRA_TYPE, entry.type.name)
+        intent.putExtra(EXTRA_PACKAGE, entry.serviceInfo.packageName)
+        intent.putExtra(EXTRA_NAME, entry.serviceInfo.name)
+        context?.packageManager?.queryIntentActivities(intent, 0)?.forEach {
+            Log.d("USettings", it.activityInfo.name)
+        }
+        startActivity(intent)
+    }
+
+    private suspend fun updateAdapters() {
+        val context = requireContext()
+        locationAdapter.entries = createBackendInfoList(context, Intent(ACTION_LOCATION_BACKEND), UnifiedLocationClient[context].getLocationBackends(), BackendType.LOCATION)
+        geocoderAdapter.entries = createBackendInfoList(context, Intent(ACTION_GEOCODER_BACKEND), UnifiedLocationClient[context].getGeocoderBackends(), BackendType.GEOCODER)
+    }
+
+    private fun createBackendInfoList(context: Context, intent: Intent, enabledBackends: Array<String>, type: BackendType): Array<BackendInfo> {
+        val backends = context.packageManager.queryIntentServices(intent, GET_META_DATA).map { BackendInfo(context, it.serviceInfo, type, lifecycleScope, enabledBackends) }
+        return backends.toTypedArray()
+    }
+}
+
+class BackendSettingsLineViewHolder(val binding: BackendListEntryBinding) : RecyclerView.ViewHolder(binding.root) {
+    fun bind(fragment: BackendListFragment, entry: BackendInfo) {
+        binding.fragment = fragment
+        binding.entry = entry
+        binding.executePendingBindings()
+    }
+}
+
+class BackendSettingsLineAdapter(val fragment: BackendListFragment) : RecyclerView.Adapter<BackendSettingsLineViewHolder>() {
+    var entries: Array<BackendInfo> = emptyArray()
+        set(value) {
+            field = value
+            notifyDataSetChanged()
+        }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BackendSettingsLineViewHolder {
+        return BackendSettingsLineViewHolder(BackendListEntryBinding.inflate(LayoutInflater.from(parent.context), parent, false))
+    }
+
+    override fun onBindViewHolder(holder: BackendSettingsLineViewHolder, position: Int) {
+        holder.bind(fragment, entries[position])
+    }
+
+    override fun getItemCount(): Int {
+        return entries.size
+    }
+}
+
+

ui/src/main/res/layout/backend_details.xml

@@ -0,0 +1,301 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2020, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<layout 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">
+
+    <data>
+
+        <import type="android.view.View" />
+
+        <import type="org.microg.nlp.ui.BackendType" />
+
+        <variable
+            name="fragment"
+            type="org.microg.nlp.ui.BackendDetailsFragment" />
+
+        <variable
+            name="entry"
+            type="org.microg.nlp.ui.BackendInfo" />
+
+        <variable
+            name="lastLocationString"
+            type="String" />
+    </data>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:animateLayoutChanges="true"
+        android:orientation="vertical">
+
+        <RelativeLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="?attr/colorPrimary"
+            android:paddingStart="?attr/listPreferredItemPaddingStart"
+            android:paddingLeft="?attr/listPreferredItemPaddingLeft"
+            android:paddingTop="24dp"
+            android:paddingEnd="?attr/listPreferredItemPaddingEnd"
+            android:paddingRight="?attr/listPreferredItemPaddingRight"
+            android:paddingBottom="16dp">
+
+            <LinearLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerHorizontal="true"
+                android:gravity="center_horizontal"
+                android:orientation="vertical">
+
+                <ImageView
+                    android:id="@+id/icon"
+                    android:layout_width="48dp"
+                    android:layout_height="48dp"
+                    android:antialias="true"
+                    android:scaleType="fitCenter"
+                    android:src="@{entry.appIcon}"
+                    tools:src="@android:mipmap/sym_def_app_icon" />
+
+                <TextView
+                    android:id="@+id/title"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="8dp"
+                    android:ellipsize="marquee"
+                    android:gravity="center"
+                    android:singleLine="false"
+                    android:text='@{entry.name}'
+                    android:textAppearance="@style/TextAppearance.AppCompat.Subhead"
+                    android:textColor="?android:attr/textColorPrimary"
+                    android:textSize="20sp"
+                    tools:text="Mozilla Location Service" />
+
+
+                <TextView
+                    android:id="@+id/app_name"
+                    style="@style/TextAppearance.AppCompat.Body1"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="2dp"
+                    android:text='@{entry.appName ?? ""}'
+                    android:textColor="?android:attr/textColorSecondary"
+                    android:visibility='@{entry != null &amp;&amp; entry.appName == entry.name ? View.GONE : View.VISIBLE}'
+                    tools:text="Mozilla UnifiedNlp Backend" />
+            </LinearLayout>
+        </RelativeLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:clickable="true"
+            android:focusable="true"
+            android:gravity="center"
+            android:onClick="@{() -> fragment.onBackendEnabledChanged(entry)}"
+            android:orientation="horizontal"
+            android:paddingStart="?attr/listPreferredItemPaddingStart"
+            android:paddingLeft="?attr/listPreferredItemPaddingLeft"
+            android:paddingEnd="?attr/listPreferredItemPaddingEnd"
+            android:paddingRight="?attr/listPreferredItemPaddingRight"
+            app:backgroundColor="@{entry.enabled ? fragment.switchBarEnabledColor : fragment.switchBarDisabledColor}"
+            tools:background="?attr/colorAccent">
+
+            <TextView
+                android:id="@+id/switch_text"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"
+                android:layout_weight="1"
+                android:ellipsize="end"
+                android:maxLines="2"
+                android:paddingStart="56dp"
+                android:paddingLeft="56dp"
+                android:text="Use backend"
+                android:textAppearance="?attr/textAppearanceListItem"
+                android:textColor="?android:attr/textColorPrimaryInverse" />
+
+            <androidx.appcompat.widget.SwitchCompat
+                android:id="@+id/switch_widget"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"
+                android:background="@null"
+                android:checked="@={entry.enabled}"
+                app:thumbTint="?android:attr/textColorPrimaryInverse"
+                tools:checked="true" />
+        </LinearLayout>
+
+        <LinearLayout
+            android:id="@+id/settingsLauncher"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="?attr/selectableItemBackground"
+            android:clickable="true"
+            android:clipToPadding="false"
+            android:focusable="true"
+            android:gravity="start|center_vertical"
+            android:minHeight="?attr/listPreferredItemHeightSmall"
+            android:onClick="@{() -> fragment.onConfigureClicked(entry)}"
+            android:paddingStart="?attr/listPreferredItemPaddingStart"
+            android:paddingLeft="?attr/listPreferredItemPaddingLeft"
+            android:paddingEnd="?attr/listPreferredItemPaddingEnd"
+            android:paddingRight="?attr/listPreferredItemPaddingRight"
+            android:visibility='@{entry == null || entry.settingsActivity == null ? View.GONE : View.VISIBLE}'>
+
+            <RelativeLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:paddingStart="56dp"
+                android:paddingLeft="56dp"
+                android:paddingTop="16dp"
+                android:paddingBottom="16dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:ellipsize="marquee"
+                    android:singleLine="true"
+                    android:text="Configure"
+                    android:textAppearance="?attr/textAppearanceListItem" />
+            </RelativeLayout>
+        </LinearLayout>
+
+        <LinearLayout
+            android:id="@+id/aboutLauncher"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="?attr/selectableItemBackground"
+            android:clickable="true"
+            android:clipToPadding="false"
+            android:focusable="true"
+            android:gravity="start|center_vertical"
+            android:minHeight="?attr/listPreferredItemHeightSmall"
+            android:onClick="@{() -> fragment.onAboutClicked(entry)}"
+            android:paddingStart="?attr/listPreferredItemPaddingStart"
+            android:paddingLeft="?attr/listPreferredItemPaddingLeft"
+            android:paddingEnd="?attr/listPreferredItemPaddingEnd"
+            android:paddingRight="?attr/listPreferredItemPaddingRight"
+            android:visibility='@{entry == null || entry.aboutActivity == null ? View.GONE : View.VISIBLE}'>
+
+            <RelativeLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:paddingStart="56dp"
+                android:paddingLeft="56dp"
+                android:paddingTop="16dp"
+                android:paddingBottom="16dp">
+
+                <TextView
+                    android:id="@+id/about_title"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:ellipsize="marquee"
+                    android:singleLine="true"
+                    android:text='About'
+                    android:textAppearance="?attr/textAppearanceListItem" />
+            </RelativeLayout>
+        </LinearLayout>
+
+
+        <View
+            android:layout_width="match_parent"
+            android:layout_height="1dp"
+            android:background="?attr/dividerHorizontal"
+            android:visibility='@{entry == null || (entry.backendSummary == null || entry.type != BackendType.LOCATION) || (entry.settingsActivity == null &amp;&amp; entry.aboutActivity == null) ? View.GONE : View.VISIBLE}' />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:clipToPadding="false"
+            android:gravity="start|center_vertical"
+            android:minHeight="?attr/listPreferredItemHeightSmall"
+            android:paddingStart="?attr/listPreferredItemPaddingStart"
+            android:paddingLeft="?attr/listPreferredItemPaddingLeft"
+            android:paddingEnd="?attr/listPreferredItemPaddingEnd"
+            android:paddingRight="?attr/listPreferredItemPaddingRight"
+            android:visibility='@{entry == null || entry.backendSummary == null ? View.GONE : View.VISIBLE}'>
+
+            <RelativeLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:paddingStart="56dp"
+                android:paddingLeft="56dp"
+                android:paddingTop="16dp"
+                android:paddingBottom="16dp">
+
+
+                <TextView
+                    android:id="@+id/description_title"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:ellipsize="marquee"
+                    android:singleLine="true"
+                    android:text="Description"
+                    android:textAppearance="?attr/textAppearanceListItem"
+                    android:textColor="?android:attr/textColorSecondary" />
+
+                <TextView
+                    android:id="@+id/summary"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_below="@id/description_title"
+                    android:layout_alignStart="@id/description_title"
+                    android:layout_alignLeft="@id/description_title"
+                    android:maxLines="10"
+                    android:text='@{entry.backendSummary ?? ""}'
+                    android:textAppearance="?attr/textAppearanceListItemSecondary"
+                    android:textColor="?android:attr/textColorSecondary"
+                    tools:text="Locate using Mozilla\'s online database" />
+            </RelativeLayout>
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:clipToPadding="false"
+            android:gravity="start|center_vertical"
+            android:minHeight="?attr/listPreferredItemHeightSmall"
+            android:paddingStart="?attr/listPreferredItemPaddingStart"
+            android:paddingLeft="?attr/listPreferredItemPaddingLeft"
+            android:paddingEnd="?attr/listPreferredItemPaddingEnd"
+            android:paddingRight="?attr/listPreferredItemPaddingRight"
+            android:visibility='@{lastLocationString == null ? View.GONE : View.VISIBLE}'>
+
+            <RelativeLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:paddingStart="56dp"
+                android:paddingLeft="56dp"
+                android:paddingTop="16dp"
+                android:paddingBottom="16dp">
+
+
+                <TextView
+                    android:id="@+id/last_location_title"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:ellipsize="marquee"
+                    android:singleLine="true"
+                    android:text="Last location"
+                    android:textAppearance="?attr/textAppearanceListItem"
+                    android:textColor="?android:attr/textColorSecondary" />
+
+                <TextView
+                    android:id="@+id/last_location"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_below="@id/last_location_title"
+                    android:layout_alignStart="@id/last_location_title"
+                    android:layout_alignLeft="@id/last_location_title"
+                    android:maxLines="10"
+                    android:text='@{lastLocationString ?? ""}'
+                    android:textAppearance="?attr/textAppearanceListItemSecondary"
+                    android:textColor="?android:attr/textColorSecondary"
+                    tools:text="Main St 23" />
+            </RelativeLayout>
+        </LinearLayout>
+    </LinearLayout>
+</layout>

ui/src/main/res/layout/backend_list.xml

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2020, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<layout 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">
+
+    <data>
+
+        <variable
+            name="fragment"
+            type="org.microg.nlp.ui.BackendListFragment" />
+    </data>
+
+    <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:layout_marginTop="16dp"
+            android:clipToPadding="false"
+            android:gravity="start|center_vertical"
+            android:paddingStart="?android:attr/listPreferredItemPaddingStart"
+            android:paddingLeft="?android:attr/listPreferredItemPaddingLeft"
+            android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
+            android:paddingRight="?android:attr/listPreferredItemPaddingRight">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:ellipsize="marquee"
+                android:letterSpacing="0.073"
+                android:paddingStart="56dp"
+                android:paddingLeft="56dp"
+                android:paddingTop="8dp"
+                android:paddingBottom="8dp"
+                android:singleLine="true"
+                android:text="@string/network_location"
+                android:textAllCaps="true"
+                android:textAppearance="@style/TextAppearance.AppCompat.Body2"
+                android:textColor="?attr/colorAccent"
+                android:textSize="11sp" />
+        </LinearLayout>
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/network_location_backend_list"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            app:adapter="@{fragment.locationAdapter}"
+            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+            tools:itemCount="2"
+            tools:listitem="@layout/backend_list_entry" />
+
+        <View
+            android:layout_width="match_parent"
+            android:layout_height="1dp"
+            android:background="?android:attr/dividerHorizontal" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:clipToPadding="false"
+            android:gravity="start|center_vertical"
+            android:paddingStart="?android:attr/listPreferredItemPaddingStart"
+            android:paddingLeft="?android:attr/listPreferredItemPaddingLeft"
+            android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
+            android:paddingRight="?android:attr/listPreferredItemPaddingRight">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:ellipsize="marquee"
+                android:paddingStart="56dp"
+                android:paddingLeft="56dp"
+                android:paddingTop="8dp"
+                android:paddingBottom="8dp"
+                android:singleLine="true"
+                android:text="@string/geocoding"
+                android:textAllCaps="true"
+                android:textAppearance="@style/TextAppearance.AppCompat.Body2"
+                android:textColor="?attr/colorAccent"
+                android:textSize="11sp" />
+        </LinearLayout>
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/geocoding_backend_list"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            app:adapter="@{fragment.geocoderAdapter}"
+            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+            tools:itemCount="1"
+            tools:listitem="@layout/backend_list_entry" />
+    </LinearLayout>
+</layout>

ui/src/main/res/layout/backend_list_entry.xml

@@ -0,0 +1,113 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2020, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <data>
+
+        <import type="android.view.View" />
+
+        <variable
+            name="fragment"
+            type="org.microg.nlp.ui.BackendListFragment" />
+
+        <variable
+            name="entry"
+            type="org.microg.nlp.ui.BackendInfo" />
+    </data>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:baselineAligned="false"
+        android:gravity="center_vertical"
+        android:minHeight="?android:attr/listPreferredItemHeightSmall"
+        android:orientation="horizontal">
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:background="?android:attr/selectableItemBackground"
+            android:clickable="true"
+            android:clipToPadding="false"
+            android:focusable="true"
+            android:gravity="start|center_vertical"
+            android:onClick="@{() -> fragment.onBackendSelected(entry)}"
+            android:paddingStart="?android:attr/listPreferredItemPaddingStart"
+            android:paddingLeft="?android:attr/listPreferredItemPaddingLeft"
+            android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
+            android:paddingRight="?android:attr/listPreferredItemPaddingRight">
+
+            <LinearLayout
+                android:id="@+id/icon_frame"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:clipToPadding="false"
+                android:gravity="start|center_vertical"
+                android:minWidth="56dp"
+                android:orientation="horizontal"
+                android:paddingTop="4dp"
+                android:paddingBottom="4dp">
+
+                <ImageView
+                    android:id="@+id/icon"
+                    android:layout_width="32dp"
+                    android:layout_height="32dp"
+                    android:src="@{entry.appIcon}"
+                    tools:src="@android:mipmap/sym_def_app_icon" />
+            </LinearLayout>
+
+            <RelativeLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:paddingTop="16dp"
+                android:paddingBottom="16dp">
+
+                <TextView
+                    android:id="@+id/title"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:ellipsize="marquee"
+                    android:singleLine="true"
+                    android:text='@{entry.name}'
+                    android:textAppearance="?android:attr/textAppearanceListItem"
+                    tools:text="Mozilla Location Service" />
+            </RelativeLayout>
+        </LinearLayout>
+
+        <LinearLayout
+            android:id="@+id/two_target_divider"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:gravity="start|center_vertical"
+            android:orientation="horizontal"
+            android:paddingTop="16dp"
+            android:paddingBottom="16dp">
+
+            <View
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="?android:attr/listDivider" />
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:gravity="center"
+            android:minWidth="64dp"
+            android:orientation="vertical">
+
+            <androidx.appcompat.widget.SwitchCompat
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:checked="@={entry.enabled}"
+                android:minWidth="80dp"
+                android:paddingLeft="16dp"
+                android:paddingRight="16dp" />
+        </LinearLayout>
+    </LinearLayout>
+</layout>

ui/src/main/res/values-de/strings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2014, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<resources>
+    <string name="network_location">Funknetz-basierte Ortung</string>
+    <string name="geocoding">Adressauflösung</string>
+</resources>

ui/src/main/res/values-eo/strings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2014, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<resources>
+    <string name="network_location">Ret-bazita pozici-trovado</string>
+    <string name="geocoding">Adres-elserĉado</string>
+</resources>

ui/src/main/res/values-fr/strings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2014, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<resources>
+    <string name="network_location">Géolocalisation réseau</string>
+    <string name="geocoding">Géocodage</string>
+</resources>

ui/src/main/res/values-pl/strings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2014, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<resources>
+    <string name="network_location">Geolokalizacja oparta o sieć</string>
+    <string name="geocoding">Wyszukiwanie adresów</string>
+</resources>

ui/src/main/res/values-ro/strings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2014, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<resources>
+    <string name="network_location">Localizare geografică bazată pe rețea</string>
+    <string name="geocoding">Căutare adrese</string>
+</resources>

ui/src/main/res/values-ru/strings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2014, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<resources>
+    <string name="network_location">Местоположение по сети</string>
+    <string name="geocoding">Поиск адреса</string>
+</resources>

ui/src/main/res/values-sr/strings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2014, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<resources>
+    <string name="network_location">Мрежна геолокација</string>
+    <string name="geocoding">Потрага адресе</string>
+</resources>

ui/src/main/res/values-uk/strings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2014, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<resources>
+    <string name="network_location">Географічне позиціювання на основі мереж</string>
+    <string name="geocoding">Пошук адрес</string>
+</resources>

ui/src/main/res/values-zh-rTW/strings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2014, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<resources>
+    <string name="network_location">基於網路的地理位置定位</string>
+    <string name="geocoding">地址查閱</string>
+</resources>

ui/src/main/res/values/strings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ SPDX-FileCopyrightText: 2014, microG Project Team
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<resources>
+    <string name="network_location">Network-based Geolocation</string>
+    <string name="geocoding">Address lookup</string>
+</resources>