Implement Hatchery UI for downloading a list of apps.

app/src/main/java/de/ccc/events/badge/card10/Constants.kt

@@ -37,3 +37,5 @@ val LIGHT_SENSOR_CHARACTERISTIC_UUID = UUID.fromString("422302f0-2342-2342-2342-
 val TIME_CHARACTERISTIC_UUID = UUID.fromString("42230201-2342-2342-2342-234223422342")
 
 const val UPDATE_CLOCK_FREQUENCY_MINS = 5
+
+const val HATCHERY_BASE_URL = "https://badge.team"

app/src/main/java/de/ccc/events/badge/card10/common/LoadingDialog.kt

+/*
+ * Copyright by the original author or authors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.ccc.events.badge.card10.common
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.fragment.app.DialogFragment
+import de.ccc.events.badge.card10.R
+
+class LoadingDialog : DialogFragment() {
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?) =
+        inflater.inflate(R.layout.loading_dialog, container, false)
+
+    init {
+        this.isCancelable = false
+    }
+}
\ No newline at end of file

app/src/main/java/de/ccc/events/badge/card10/hatchery/App.kt

+/*
+ * Copyright by the original author or authors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.ccc.events.badge.card10.hatchery
+
+import android.os.Parcel
+import android.os.Parcelable
+
+data class App(
+    val name: String,
+    val slug: String,
+    val description: String,
+    val download_counter: Int,
+    val status: String,
+    val revision: String,
+    val size_of_zip: Int,
+    val size_of_content: Int,
+    val category: String
+) : Parcelable {
+    constructor(parcel: Parcel) : this(
+        parcel.readString()!!,
+        parcel.readString()!!,
+        parcel.readString()!!,
+        parcel.readInt(),
+        parcel.readString()!!,
+        parcel.readString()!!,
+        parcel.readInt(),
+        parcel.readInt(),
+        parcel.readString()!!
+    ) {
+    }
+
+    override fun writeToParcel(parcel: Parcel, flags: Int) {
+        parcel.writeString(name)
+        parcel.writeString(slug)
+        parcel.writeString(description)
+        parcel.writeInt(download_counter)
+        parcel.writeString(status)
+        parcel.writeString(revision)
+        parcel.writeInt(size_of_zip)
+        parcel.writeInt(size_of_content)
+        parcel.writeString(category)
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
+    companion object CREATOR : Parcelable.Creator<App> {
+        override fun createFromParcel(parcel: Parcel): App {
+            return App(parcel)
+        }
+
+        override fun newArray(size: Int): Array<App?> {
+            return arrayOfNulls(size)
+        }
+    }
+}

app/src/main/java/de/ccc/events/badge/card10/hatchery/AppDetailFragment.kt

+/*
+ * Copyright by the original author or authors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.ccc.events.badge.card10.hatchery
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import de.ccc.events.badge.card10.R
+import kotlinx.android.synthetic.main.app_detail_fragment.*
+import java.lang.IllegalStateException
+
+class AppDetailFragment : Fragment() {
+
+    private lateinit var app: App
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        val bundle = arguments ?: throw IllegalStateException()
+        app = bundle.getParcelable<App>("app") ?: throw IllegalStateException()
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?) =
+        inflater.inflate(R.layout.app_detail_fragment, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        label_name.text = app.name
+        label_download_count.text = getString(R.string.app_detail_downloads, app.download_counter)
+        label_content_size.text = getString(R.string.app_detail_content_size, app.size_of_content)
+
+        label_description.text = app.description
+    }
+}

app/src/main/java/de/ccc/events/badge/card10/hatchery/AppListAdapter.kt

+/*
+ * Copyright by the original author or authors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.ccc.events.badge.card10.hatchery
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+
+class AppListAdapter(val clickListener: (App) -> Unit) : RecyclerView.Adapter<AppViewHolder>() {
+    private var data = listOf<App>()
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): AppViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+        return AppViewHolder(inflater, parent)
+    }
+
+    override fun getItemCount(): Int {
+        return data.size
+    }
+
+    override fun onBindViewHolder(holder: AppViewHolder, position: Int) {
+        holder.bind(data[position], clickListener)
+    }
+
+    fun update(items: List<App>) {
+        data = items
+    }
+}

app/src/main/java/de/ccc/events/badge/card10/hatchery/AppListFragment.kt

+/*
+ * Copyright by the original author or authors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.ccc.events.badge.card10.hatchery
+
+import android.content.Context
+import android.os.AsyncTask
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.appcompat.app.AlertDialog
+import androidx.fragment.app.Fragment
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import de.ccc.events.badge.card10.R
+import de.ccc.events.badge.card10.common.LoadingDialog
+import kotlinx.android.synthetic.main.app_list_fragment.*
+import java.lang.ref.WeakReference
+
+class AppListFragment : Fragment() {
+    private lateinit var recyclerView: RecyclerView
+    private lateinit var listAdapter: AppListAdapter
+    private lateinit var layoutManager: RecyclerView.LayoutManager
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?) =
+        inflater.inflate(R.layout.app_list_fragment, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        listAdapter = AppListAdapter { app: App -> onAppClicked(app) }
+
+        layoutManager = LinearLayoutManager(activity)
+
+        recyclerView = list
+        recyclerView.setHasFixedSize(true)
+        recyclerView.layoutManager = layoutManager
+        recyclerView.adapter = listAdapter
+
+        val loadingDialog = LoadingDialog()
+        loadingDialog.show(fragmentManager, "loading")
+        DownloadTask(activity as Context, listAdapter, loadingDialog).execute()
+    }
+
+    private fun onAppClicked(app: App) {
+        val bundle = Bundle()
+        bundle.putParcelable("app", app)
+        val fragment = AppDetailFragment()
+        fragment.arguments = bundle
+
+        val fragmentManager = activity?.supportFragmentManager ?: throw IllegalStateException()
+        fragmentManager.beginTransaction()
+            .replace(R.id.fragment_container, fragment)
+            .commit()
+    }
+
+    private class DownloadTask(
+        context: Context,
+        private val adapter: AppListAdapter,
+        private val loadingDialog: LoadingDialog
+    ) : AsyncTask<Void, Void, List<App>?>() {
+
+        private val context = WeakReference<Context>(context)
+
+        override fun doInBackground(vararg p0: Void?): List<App>? {
+            val client = HatcheryClient()
+
+            return try {
+                client.getAppList()
+            } catch (e: HatcheryClientException) {
+                null
+            }
+        }
+
+        override fun onPostExecute(result: List<App>?) {
+            if (result == null) {
+                loadingDialog.dismiss()
+                val ctx = context.get() ?: throw IllegalStateException()
+                AlertDialog.Builder(ctx).setMessage(R.string.hatchery_error_generic)
+                return
+            }
+
+            adapter.update(result)
+            adapter.notifyDataSetChanged()
+            loadingDialog.dismiss()
+        }
+    }
+}

app/src/main/java/de/ccc/events/badge/card10/hatchery/AppViewHolder.kt

+/*
+ * Copyright by the original author or authors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.ccc.events.badge.card10.hatchery
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import de.ccc.events.badge.card10.R
+
+class AppViewHolder(inflater: LayoutInflater, parent: ViewGroup) :
+    RecyclerView.ViewHolder(inflater.inflate(R.layout.app_list_item, parent, false)) {
+
+    fun bind(app: App, clickListener: (App) -> Unit) {
+        val nameLabel = itemView.findViewById<TextView>(R.id.label_name)
+        nameLabel.text = app.name
+
+        itemView.setOnClickListener {
+            clickListener(app)
+        }
+    }
+}

app/src/main/java/de/ccc/events/badge/card10/hatchery/HatcheryClient.kt

+/*
+ * Copyright by the original author or authors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.ccc.events.badge.card10.hatchery
+
+import android.util.Log
+import de.ccc.events.badge.card10.HATCHERY_BASE_URL
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.Response
+import org.json.JSONArray
+import org.json.JSONException
+
+private const val TAG = "HatcheryClient"
+
+class HatcheryClient {
+    fun getAppList(): List<App> {
+        val client = OkHttpClient()
+        val request = Request.Builder()
+            .url(HATCHERY_BASE_URL + "/eggs/list/json")
+            .build()
+
+        val response: Response
+        try {
+            response = client.newCall(request).execute()
+        } catch (e: Exception) {
+            throw HatcheryClientException(0)
+        }
+
+        if (response.code != 200) {
+            throw HatcheryClientException(response.code)
+        }
+
+        val body = response.body?.string() ?: ""
+        val resultList = mutableListOf<App>()
+
+        try {
+            val responseJson = JSONArray(body)
+
+            for (i in 0 until responseJson.length()) {
+                val item = responseJson.getJSONObject(i)
+                resultList.add(
+                    App(
+                        name = item.getString("name"),
+                        slug = item.getString("slug"),
+                        description = item.getString("description"),
+                        download_counter = item.getInt("download_counter"),
+                        status = item.getString("status"),
+                        revision = item.getString("revision"),
+                        size_of_zip = item.getInt("size_of_zip"),
+                        size_of_content = item.getInt("size_of_content"),
+                        category = item.getString("category")
+                    )
+                )
+            }
+        } catch (e: JSONException) {
+            Log.e(TAG, "Error parsing JSON: ${e.message}")
+            throw HatcheryClientException(0)
+        }
+
+        return resultList
+    }
+}

app/src/main/java/de/ccc/events/badge/card10/hatchery/HatcheryClientException.kt

+/*
+ * Copyright by the original author or authors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.ccc.events.badge.card10.hatchery
+
+import java.lang.Exception
+
+class HatcheryClientException(val httpCode: Int) : Exception()

app/src/main/res/layout/app_detail_fragment.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"
+                                                   android:layout_width="match_parent"
+                                                   android:layout_height="match_parent"
+                                                   android:padding="@dimen/activity_padding">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            app:layout_constraintTop_toTopOf="parent"
+            android:id="@+id/container_header">
+
+        <TextView android:layout_width="wrap_content"
+                  android:layout_height="wrap_content"
+                  app:layout_constraintLeft_toLeftOf="parent"
+                  app:layout_constraintTop_toTopOf="parent"
+                  android:textStyle="bold"
+                  android:id="@+id/label_name"/>
+
+        <TextView android:layout_width="wrap_content"
+                  android:layout_height="wrap_content"
+                  app:layout_constraintLeft_toLeftOf="parent"
+                  app:layout_constraintTop_toBottomOf="@id/label_name"
+                  android:id="@+id/label_download_count"/>
+
+        <TextView android:layout_width="wrap_content"
+                  android:layout_height="wrap_content"
+                  app:layout_constraintLeft_toLeftOf="parent"
+                  app:layout_constraintTop_toBottomOf="@id/label_download_count"
+                  android:id="@+id/label_content_size"/>
+
+        <Button android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                app:layout_constraintRight_toRightOf="parent"
+                app:layout_constraintTop_toTopOf="parent"
+                android:id="@+id/button_download"
+                android:text="@string/app_detail_button_download"
+                android:enabled="false"/>
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <TextView android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              app:layout_constraintLeft_toLeftOf="parent"
+              app:layout_constraintRight_toRightOf="parent"
+              app:layout_constraintTop_toBottomOf="@id/container_header"
+              android:layout_marginTop="@dimen/app_detail_description_margin"
+              android:id="@+id/label_description"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

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

+<?xml version="1.0" encoding="utf-8"?>
+<androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
+                                           android:layout_width="match_parent"
+                                           android:layout_height="match_parent"
+                                           android:id="@+id/list"/>
\ No newline at end of file

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

+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:orientation="vertical"
+              android:layout_width="match_parent"
+              android:layout_height="@dimen/default_list_item_height">
+
+    <TextView
+            android:id="@+id/label_name"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="start"
+            android:paddingLeft="@dimen/default_list_item_margin_side"
+            android:textStyle="bold"/>
+
+</LinearLayout>
\ No newline at end of file

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

+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:orientation="vertical"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent"
+              android:padding="@dimen/loading_dialog_padding">
+
+    <ProgressBar android:layout_width="@dimen/loading_dialog_progress"
+                 android:layout_height="@dimen/loading_dialog_progress"
+                 android:layout_gravity="center"
+                 android:indeterminate="true"/>
+
+    <TextView android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              android:layout_gravity="center"
+              android:layout_marginTop="@dimen/loading_dialog_text_margin"