release 0.4.1

by allowing "fault" and "highlight" only with scale == 1f
refs #59

.travis.yml

@@ -1,16 +1,23 @@
-language: android
+language: java
 dist: trusty
-android:
-  components:
-    - build-tools-29.0.3
-    - android-29
 env:
   global:
     - secure: 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
     - secure: 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
     - secure: 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
+    - ANDROID_HOME=$HOME/android-sdk
 before_install:
   - openssl aes-256-cbc -K $encrypted_53968681344a_key -iv $encrypted_53968681344a_iv -in _ci/keystore.jks.enc -out _ci/keystore.jks -d
+install:
+  # Download and unzip the Android command line tools (if not already there thanks to the cache mechanism)
+  # Latest version of this file available here: https://developer.android.com/studio/#command-tools
+  - if test ! -e $HOME/android-cmdline-tools/cmdline-tools.zip ; then curl https://dl.google.com/android/repository/commandlinetools-linux-6609375_latest.zip > $HOME/android-cmdline-tools/cmdline-tools.zip ; fi
+  - unzip -qq -n $HOME/android-cmdline-tools/cmdline-tools.zip -d $HOME/android-cmdline-tools
+  # Install or update Android SDK components (will not do anything if already up to date thanks to the cache mechanism)
+  - echo y | $HOME/android-cmdline-tools/tools/bin/sdkmanager --sdk_root=$HOME/android-sdk 'platform-tools' > /dev/null
+  # Latest version of build-tools available here: https://developer.android.com/studio/releases/build-tools.html
+  - echo y | $HOME/android-cmdline-tools/tools/bin/sdkmanager --sdk_root=$HOME/android-sdk 'build-tools;29.0.3' > /dev/null
+  - echo y | $HOME/android-cmdline-tools/tools/bin/sdkmanager --sdk_root=$HOME/android-sdk 'platforms;android-29' > /dev/null
 script:
   - "./gradlew lintFossDebug testFossDebugUnitTest lintGoogleDebug testGoogleDebugUnitTest"
   - "./gradlew assembleRelease"
@@ -22,6 +29,8 @@ cache:
     - "$HOME/.gradle/caches/"
     - "$HOME/.gradle/wrapper/"
     - "$HOME/.android/build-cache"
+    - "$HOME/android-cmdline-tools"
+    - "$HOME/android-sdk"
 deploy:
   provider: releases
   api_key:

app/build.gradle

@@ -6,15 +6,15 @@ apply plugin: 'androidx.navigation.safeargs.kotlin'
 apply plugin: 'com.mikepenz.aboutlibraries.plugin'
 
 android {
-    compileSdkVersion 29
-    buildToolsVersion "29.0.3"
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
 
     defaultConfig {
         applicationId "net.vonforst.evmap"
         minSdkVersion 21
-        targetSdkVersion 29
-        versionCode 27
-        versionName "0.4.0"
+        targetSdkVersion 30
+        versionCode 28
+        versionName "0.4.1"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
@@ -48,7 +48,6 @@ android {
     productFlavors {
         foss {
             dimension "dependencies"
-            versionNameSuffix "-foss"
         }
         google {
             dimension "dependencies"
@@ -110,8 +109,8 @@ dependencies {
     implementation 'com.squareup.okhttp3:okhttp:4.9.0'
     implementation 'com.squareup.okhttp3:okhttp-urlconnection:4.9.0'
     implementation 'com.squareup.moshi:moshi-kotlin:1.9.2'
-    implementation 'com.squareup.picasso:picasso:2.71828'
-    implementation 'com.github.MikeOrtiz:TouchImageView:2.3.3'
+    implementation 'io.coil-kt:coil:1.1.0'
+    implementation 'com.github.MikeOrtiz:TouchImageView:3.0.3'
     implementation "com.mikepenz:aboutlibraries-core:$about_libs_version"
     implementation "com.mikepenz:aboutlibraries:$about_libs_version"
     implementation 'com.airbnb.android:lottie:3.4.0'
@@ -121,7 +120,7 @@ dependencies {
     implementation 'com.github.pengrad:mapscaleview:1.6.0'
 
     // AnyMaps
-    def anyMapsVersion = '631708a156'
+    def anyMapsVersion = '7753eeb7b0'
     implementation "com.github.johan12345.AnyMaps:anymaps-base:$anyMapsVersion"
     googleImplementation "com.github.johan12345.AnyMaps:anymaps-google:$anyMapsVersion"
     implementation "com.github.johan12345.AnyMaps:anymaps-mapbox:$anyMapsVersion"
@@ -180,4 +179,4 @@ dependencies {
     kapt "com.squareup.moshi:moshi-kotlin-codegen:1.9.2"
 
     coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.1'
-}
+}

app/src/main/java/net/vonforst/evmap/adapter/GalleryAdapter.kt

@@ -7,9 +7,11 @@ import android.widget.ImageView
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.ListAdapter
 import androidx.recyclerview.widget.RecyclerView
+import coil.load
+import coil.memory.MemoryCache
+import coil.size.OriginalSize
+import coil.size.SizeResolver
 import com.ortiz.touchview.TouchImageView
-import com.squareup.picasso.Callback
-import com.squareup.picasso.Picasso
 import net.vonforst.evmap.R
 import net.vonforst.evmap.api.goingelectric.ChargerPhoto
 
@@ -19,17 +21,19 @@ class GalleryAdapter(
     val itemClickListener: ItemClickListener? = null,
     val detailView: Boolean = false,
     val pageToLoad: Int? = null,
+    val imageCacheKey: MemoryCache.Key? = null,
     val loadedListener: (() -> Unit)? = null
 ) :
     ListAdapter<ChargerPhoto, GalleryAdapter.ViewHolder>(ChargerPhotoDiffCallback()) {
     class ViewHolder(val view: ImageView) : RecyclerView.ViewHolder(view)
 
     interface ItemClickListener {
-        fun onItemClick(view: View, position: Int)
+        fun onItemClick(view: View, position: Int, imageCacheKey: MemoryCache.Key?)
     }
 
     val apikey = context.getString(R.string.goingelectric_key)
     var loaded = false
+    val memoryKeys = HashMap<String, MemoryCache.Key?>()
 
     @SuppressLint("ClickableViewAccessibility")
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
@@ -73,46 +77,63 @@ class GalleryAdapter(
         if (detailView) {
             (holder.view as TouchImageView).resetZoom()
         }
-        Picasso.get()
-            .load(
-                "https://api.goingelectric.de/chargepoints/photo/?key=${apikey}" +
-                        "&id=${getItem(position).id}" +
-                        if (detailView) {
-                            "&size=1000"
-                        } else {
-                            "&height=${holder.view.height}"
-                        }
-            )
-            .into(holder.view, object : Callback {
-                override fun onSuccess() {
-                    if (!loaded && loadedListener != null && pageToLoad == position) {
-                        holder.view.viewTreeObserver.addOnPreDrawListener(object :
-                            ViewTreeObserver.OnPreDrawListener {
-                            override fun onPreDraw(): Boolean {
-                                holder.view.viewTreeObserver.removeOnPreDrawListener(this)
-                                loadedListener.invoke()
-                                return true
-                            }
-                        })
-                        loaded = true
-                    }
+        val id = getItem(position).id
+        val url = "https://api.goingelectric.de/chargepoints/photo/?key=${apikey}" +
+                "&id=$id" +
+                if (detailView) {
+                    "&size=1000"
+                } else {
+                    "&height=${holder.view.height}"
                 }
 
-                override fun onError(e: Exception?) {
+        holder.view.load(
+            url
+        ) {
+            if (pageToLoad == position && imageCacheKey != null) {
+                placeholderMemoryCacheKey(imageCacheKey)
+            }
+            size(SizeResolver(OriginalSize))
+            allowHardware(false)
+            listener(
+                onSuccess = { _, metadata ->
+                    memoryKeys[id] = metadata.memoryCacheKey
+                    if (pageToLoad == position) invokeLoadedListener(holder.view)
+                },
+                onError = { _, _ ->
                     if (!loaded && loadedListener != null && pageToLoad == position) {
                         loadedListener.invoke()
                         loaded = true
                     }
                 }
-
-            })
+            )
+        }
+        if (pageToLoad == position && imageCacheKey != null) {
+            // start transition immediately
+            if (pageToLoad == position) invokeLoadedListener(holder.view)
+        }
         holder.view.transitionName = galleryTransitionName(position)
         if (itemClickListener != null) {
             holder.view.setOnClickListener {
-                itemClickListener.onItemClick(holder.view, position)
+                itemClickListener.onItemClick(holder.view, position, memoryKeys[id])
             }
         }
     }
+
+    private fun invokeLoadedListener(
+        view: ImageView
+    ) {
+        if (!loaded && loadedListener != null) {
+            view.viewTreeObserver.addOnPreDrawListener(object :
+                ViewTreeObserver.OnPreDrawListener {
+                override fun onPreDraw(): Boolean {
+                    view.viewTreeObserver.removeOnPreDrawListener(this)
+                    loadedListener.invoke()
+                    return true
+                }
+            })
+            loaded = true
+        }
+    }
 }
 
 fun galleryTransitionName(position: Int) = "gallery_$position"

app/src/main/java/net/vonforst/evmap/api/availability/NewMotionAvailabilityDetector.kt

@@ -9,6 +9,7 @@ import retrofit2.Retrofit
 import retrofit2.converter.moshi.MoshiConverterFactory
 import retrofit2.http.GET
 import retrofit2.http.Path
+import java.util.*
 
 private const val coordRange = 0.1  // range of latitude and longitude for loading the map
 private const val maxDistance = 15  // max distance between reported positions in meters
@@ -138,14 +139,17 @@ class NewMotionAvailabilityDetector(client: OkHttpClient, baseUrl: String? = nul
         connectorStatus.forEach { (connector, statusStr) ->
             val id = connector.uid
             val power = connector.electricalProperties.getPower()
-            val type = when (connector.connectorType) {
-                "Type3" -> Chargepoint.TYPE_3
-                "Type2" -> Chargepoint.TYPE_2
-                "Type1" -> Chargepoint.TYPE_1
-                "Domestic" -> Chargepoint.SCHUKO
-                "Type2Combo" -> Chargepoint.CCS
-                "TepcoCHAdeMO" -> Chargepoint.CHADEMO
-                "Unspecified" -> "unspecified"
+            val type = when (connector.connectorType.toLowerCase(Locale.ROOT)) {
+                "type3" -> Chargepoint.TYPE_3
+                "type2" -> Chargepoint.TYPE_2
+                "type1" -> Chargepoint.TYPE_1
+                "domestic" -> Chargepoint.SCHUKO
+                "type1combo" -> Chargepoint.CCS  // US CCS, aka type1_combo
+                "type2combo" -> Chargepoint.CCS  // EU CCS, aka type2_combo
+                "tepcochademo" -> Chargepoint.CHADEMO
+                "unspecified" -> "unknown"
+                "unknown" -> "unknown"
+                "saej1772" -> "unknown"
                 else -> throw IllegalArgumentException("unrecognized type ${connector.connectorType}")
             }
             val status = when (statusStr) {

app/src/main/java/net/vonforst/evmap/fragment/GalleryFragment.kt

@@ -12,6 +12,7 @@ import androidx.fragment.app.activityViewModels
 import androidx.navigation.fragment.findNavController
 import androidx.transition.TransitionInflater
 import androidx.viewpager2.widget.ViewPager2
+import coil.memory.MemoryCache
 import com.ortiz.touchview.TouchImageView
 import net.vonforst.evmap.R
 import net.vonforst.evmap.adapter.GalleryAdapter
@@ -24,18 +25,23 @@ class GalleryFragment : Fragment() {
     companion object {
         private const val EXTRA_POSITION = "position"
         private const val EXTRA_PHOTOS = "photos"
+        private const val EXTRA_IMAGE_CACHE_KEY = "image_cache_key"
         private const val SAVED_CURRENT_PAGE_POSITION = "current_page_position"
 
-        fun buildArgs(photos: List<ChargerPhoto>, position: Int): Bundle {
+        fun buildArgs(
+            photos: List<ChargerPhoto>,
+            position: Int,
+            imageCacheKey: MemoryCache.Key?
+        ): Bundle {
             return Bundle().apply {
                 putParcelableArrayList(EXTRA_PHOTOS, ArrayList(photos))
                 putInt(EXTRA_POSITION, position)
+                putParcelable(EXTRA_IMAGE_CACHE_KEY, imageCacheKey)
             }
         }
     }
 
     private lateinit var binding: FragmentGalleryBinding
-    private var isReturning: Boolean = false
     private var startingPosition: Int = 0
     private var currentPosition: Int = 0
     private lateinit var galleryAdapter: GalleryAdapter
@@ -49,7 +55,6 @@ class GalleryFragment : Fragment() {
             if (image != null && image.currentZoom !in 0.95f..1.05f) {
                 image.setZoomAnimated(1f, 0.5f, 0.5f)
             } else {
-                isReturning = true
                 galleryVm.galleryPosition.value = currentPosition
                 findNavController().popBackStack()
             }
@@ -73,7 +78,10 @@ class GalleryFragment : Fragment() {
             savedInstanceState?.getInt(SAVED_CURRENT_PAGE_POSITION) ?: startingPosition
 
         galleryAdapter =
-            GalleryAdapter(requireContext(), detailView = true, pageToLoad = currentPosition) {
+            GalleryAdapter(
+                requireContext(), detailView = true, pageToLoad = currentPosition,
+                imageCacheKey = args.getParcelable(EXTRA_IMAGE_CACHE_KEY)
+            ) {
                 startPostponedEnterTransition()
             }
         binding.gallery.setPageTransformer { page, _ ->
@@ -120,10 +128,8 @@ class GalleryFragment : Fragment() {
             names: MutableList<String>,
             sharedElements: MutableMap<String, View>
         ) {
-            if (isReturning) {
-                val currentPage = currentPage ?: return
-                sharedElements[names[0]] = currentPage
-            }
+            val currentPage = currentPage ?: return
+            sharedElements[names[0]] = currentPage
         }
     }
 

app/src/main/java/net/vonforst/evmap/fragment/MapFragment.kt

@@ -35,6 +35,7 @@ import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.transition.TransitionInflater
 import androidx.transition.TransitionManager
+import coil.memory.MemoryCache
 import com.car2go.maps.AnyMap
 import com.car2go.maps.MapFragment
 import com.car2go.maps.OnMapReadyCallback
@@ -53,7 +54,9 @@ import com.mapzen.android.lost.api.LocationServices
 import com.mapzen.android.lost.api.LostApiClient
 import io.michaelrocks.bimap.HashBiMap
 import io.michaelrocks.bimap.MutableBiMap
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import net.vonforst.evmap.*
 import net.vonforst.evmap.adapter.ConnectorAdapter
 import net.vonforst.evmap.adapter.DetailsAdapter
@@ -88,7 +91,7 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
         }
     })
     private val galleryVm: GalleryViewModel by activityViewModels()
-    private lateinit var mapFragment: MapFragment
+    private var mapFragment: MapFragment? = null
     private var map: AnyMap? = null
     private lateinit var locationClient: LostApiClient
     private lateinit var bottomSheetBehavior: BottomSheetBehaviorGoogleMapsLike<View>
@@ -123,19 +126,29 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
         }
     }
 
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        locationClient = LostApiClient.Builder(requireContext())
+            .addConnectionCallbacks(this)
+            .build()
+        locationClient.connect()
+        clusterIconGenerator = ClusterIconGenerator(requireContext())
+    }
+
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
         savedInstanceState: Bundle?
-    ): View? {
+    ): View {
         binding = DataBindingUtil.inflate(inflater, R.layout.fragment_map, container, false)
         binding.lifecycleOwner = this
         binding.vm = vm
 
-        mapFragment = MapFragment()
         val provider = PreferenceDataSource(requireContext()).mapProvider
-        mapFragment.setPriority(
-            arrayOf(
+        if (mapFragment == null || mapFragment!!.priority[0] != provider) {
+            mapFragment = MapFragment()
+            mapFragment!!.priority = arrayOf(
                 when (provider) {
                     "mapbox" -> MapFragment.MAPBOX
                     "google" -> MapFragment.GOOGLE
@@ -144,25 +157,18 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
                 MapFragment.GOOGLE,
                 MapFragment.MAPBOX
             )
-        )
-        requireActivity().supportFragmentManager
-            .beginTransaction()
-            .replace(R.id.map, mapFragment)
-            .commit()
+            requireActivity().supportFragmentManager
+                .beginTransaction()
+                .replace(R.id.map, mapFragment!!)
+                .commit()
 
-        // reset map-related stuff (map provider may have changed)
-        map = null
-        markers.clear()
-        clusterMarkers = emptyList()
-        searchResultMarker = null
-        searchResultIcon = null
-
-
-        locationClient = LostApiClient.Builder(requireContext())
-            .addConnectionCallbacks(this)
-            .build()
-        locationClient.connect()
-        clusterIconGenerator = ClusterIconGenerator(requireContext())
+            // reset map-related stuff (map provider may have changed)
+            map = null
+            markers.clear()
+            clusterMarkers = emptyList()
+            searchResultMarker = null
+            searchResultIcon = null
+        }
 
         setHasOptionsMenu(true)
         postponeEnterTransition()
@@ -186,7 +192,7 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
             insets
         }
 
-        setExitSharedElementCallback(exitElementCallback)
+        setExitSharedElementCallback(reenterSharedElementCallback)
         exitTransition = TransitionInflater.from(requireContext())
             .inflateTransition(R.transition.map_exit_transition)
 
@@ -199,7 +205,7 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        mapFragment.getMapAsync(this)
+        mapFragment!!.getMapAsync(this)
         bottomSheetBehavior = BottomSheetBehaviorGoogleMapsLike.from(binding.bottomSheet)
         detailAppBarBehavior = MergedAppBarLayoutBehavior.from(binding.detailAppBar)
 
@@ -216,6 +222,10 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
             navController,
             (requireActivity() as MapsActivity).appBarConfiguration
         )
+
+        if (!PreferenceDataSource(requireContext()).welcomeDialogShown) {
+            navController.navigate(R.id.action_map_to_welcome)
+        }
     }
 
     override fun onResume() {
@@ -507,12 +517,12 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
 
     private fun setupAdapters() {
         val galleryClickListener = object : GalleryAdapter.ItemClickListener {
-            override fun onItemClick(view: View, position: Int) {
+            override fun onItemClick(view: View, position: Int, imageCacheKey: MemoryCache.Key?) {
                 val photos = vm.charger.value?.data?.photos ?: return
                 val extras = FragmentNavigatorExtras(view to view.transitionName)
                 view.findNavController().navigate(
                     R.id.action_map_to_galleryFragment,
-                    GalleryFragment.buildArgs(photos, position),
+                    GalleryFragment.buildArgs(photos, position, imageCacheKey),
                     null,
                     extras
                 )
@@ -531,17 +541,43 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
                 DividerItemDecoration(
                     context, LinearLayoutManager.HORIZONTAL
                 ).apply {
-                    setDrawable(context.getDrawable(R.drawable.gallery_divider)!!)
+                    setDrawable(ContextCompat.getDrawable(context, R.drawable.gallery_divider)!!)
                 })
         }
         if (galleryPosition == null) {
             startPostponedEnterTransition()
         } else {
-            binding.gallery.scrollToPosition(galleryPosition)
+            binding.gallery.addOnLayoutChangeListener(object : View.OnLayoutChangeListener {
+                override fun onLayoutChange(
+                    v: View,
+                    left: Int,
+                    top: Int,
+                    right: Int,
+                    bottom: Int,
+                    oldLeft: Int,
+                    oldTop: Int,
+                    oldRight: Int,
+                    oldBottom: Int
+                ) {
+                    v.removeOnLayoutChangeListener(this)
+                    val layoutManager = binding.gallery.layoutManager!!
+                    val viewAtPosition = layoutManager.findViewByPosition(galleryPosition)
+                    if (viewAtPosition == null || layoutManager.isViewPartiallyVisible(
+                            viewAtPosition,
+                            false,
+                            true
+                        )
+                    ) {
+                        binding.gallery.post {
+                            layoutManager.scrollToPosition(galleryPosition)
+                        }
+                    }
+                }
+            })
             // make sure that the app does not freeze waiting for a picture to load
             Handler().postDelayed({
                 startPostponedEnterTransition()
-            }, 500)
+            }, 100)
         }
 
         binding.detailView.connectors.apply {
@@ -609,6 +645,21 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
     override fun onMapReady(map: AnyMap) {
         this.map = map
         chargerIconGenerator = ChargerIconGenerator(requireContext(), map.bitmapDescriptorFactory)
+
+        if (BuildConfig.FLAVOR == "google" && mapFragment!!.priority[0] == MapFragment.GOOGLE) {
+            // Google Maps: icons can be generated in background thread
+            lifecycleScope.launch {
+                withContext(Dispatchers.IO) {
+                    chargerIconGenerator.preloadCache()
+                }
+            }
+        } else {
+            // Mapbox: needs to be run on main thread
+            chargerIconGenerator.preloadCache()
+        }
+
+
+
         animator = MarkerAnimator(chargerIconGenerator)
         map.uiSettings.setTiltGesturesEnabled(false)
         map.setIndoorEnabled(false)
@@ -792,7 +843,7 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
                             .icon(
                                 chargerIconGenerator.getBitmapDescriptor(
                                     tint,
-                                    0,
+                                    0f,
                                     255,
                                     highlight,
                                     fault,
@@ -974,16 +1025,17 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
         return binding.root
     }
 
-    private val exitElementCallback: SharedElementCallback = object : SharedElementCallback() {
-        override fun onMapSharedElements(
-            names: MutableList<String>,
-            sharedElements: MutableMap<String, View>
-        ) {
-            // Locate the ViewHolder for the clicked position.
-            val position = galleryVm.galleryPosition.value ?: return
+    private val reenterSharedElementCallback: SharedElementCallback =
+        object : SharedElementCallback() {
+            override fun onMapSharedElements(
+                names: MutableList<String>,
+                sharedElements: MutableMap<String, View>
+            ) {
+                // Locate the ViewHolder for the clicked position.
+                val position = galleryVm.galleryPosition.value ?: return
 
-            val vh = binding.gallery.findViewHolderForAdapterPosition(position)
-            if (vh?.itemView == null) return
+                val vh = binding.gallery.findViewHolderForAdapterPosition(position)
+                if (vh?.itemView == null) return
 
             // Map the first shared element name to the child ImageView.
             sharedElements[names[0]] = vh.itemView

app/src/main/java/net/vonforst/evmap/fragment/WelcomeDialogFragment.kt

@@ -0,0 +1,40 @@
+package net.vonforst.evmap.fragment
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowManager
+import androidx.appcompat.app.AppCompatDialogFragment
+import net.vonforst.evmap.databinding.DialogWelcomeBinding
+import net.vonforst.evmap.storage.PreferenceDataSource
+
+class WelcomeDialogFragment : AppCompatDialogFragment() {
+    private lateinit var binding: DialogWelcomeBinding
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        binding = DialogWelcomeBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        binding.btnOk.setOnClickListener {
+            PreferenceDataSource(requireContext()).welcomeDialogShown = true
+            dismiss()
+        }
+    }
+
+    override fun onStart() {
+        super.onStart()
+        dialog?.window?.setLayout(
+            WindowManager.LayoutParams.MATCH_PARENT,
+            WindowManager.LayoutParams.WRAP_CONTENT
+        )
+    }
+}

app/src/main/java/net/vonforst/evmap/storage/PreferenceDataSource.kt

@@ -72,4 +72,10 @@ class PreferenceDataSource(val context: Context) {
             "map_provider",
             context.getString(R.string.pref_map_provider_default)
         )!!
+
+    var welcomeDialogShown: Boolean
+        get() = sp.getBoolean("welcome_dialog_shown", false)
+        set(value) {
+            sp.edit().putBoolean("welcome_dialog_shown", value).apply()
+        }
 }

app/src/main/java/net/vonforst/evmap/ui/IconGenerators.kt

@@ -16,6 +16,7 @@ import com.car2go.maps.model.BitmapDescriptor
 import com.google.maps.android.ui.IconGenerator
 import com.google.maps.android.ui.SquareTextView
 import net.vonforst.evmap.R
+import kotlin.math.roundToInt
 
 class ClusterIconGenerator(context: Context) : IconGenerator(context) {
     init {
@@ -41,8 +42,11 @@ class ClusterIconGenerator(context: Context) : IconGenerator(context) {
 }
 
 
-class ChargerIconGenerator(val context: Context, val factory: BitmapDescriptorFactory) {
-    data class BitmapData(
+class ChargerIconGenerator(
+    val context: Context, val factory: BitmapDescriptorFactory,
+    val scaleResolution: Int = 20
+) {
+    private data class BitmapData(
         val tint: Int,
         val scale: Int,
         val alpha: Int,
@@ -51,20 +55,17 @@ class ChargerIconGenerator(val context: Context, val factory: BitmapDescriptorFa
         val multi: Boolean
     )
 
-    val cacheSize = 840; // 840 items: 21 sizes, 5 colors, highlight, fault, multi on/off
-    val cache = LruCache<BitmapData, BitmapDescriptor>(cacheSize)
-    val oversize = 1.4f  // increase to add padding for fault icon or scale > 1
-    val icon = R.drawable.ic_map_marker_charging
-    val multiIcon = R.drawable.ic_map_marker_charging_multiple
-    val highlightIcon = R.drawable.ic_map_marker_highlight
-    val highlightIconMulti = R.drawable.ic_map_marker_charging_highlight_multiple
-    val faultIcon = R.drawable.ic_map_marker_fault
+    // 230 items: (21 sizes, 5 colors, multi on/off) + highlight + fault (only with scale = 1)
+    private val cacheSize = (scaleResolution + 3) * 5 * 2;
+    private val cache = LruCache<BitmapData, BitmapDescriptor>(cacheSize)
+    private val oversize = 1.4f  // increase to add padding for fault icon or scale > 1
+    private val icon = R.drawable.ic_map_marker_charging
+    private val multiIcon = R.drawable.ic_map_marker_charging_multiple
+    private val highlightIcon = R.drawable.ic_map_marker_highlight
+    private val highlightIconMulti = R.drawable.ic_map_marker_charging_highlight_multiple
+    private val faultIcon = R.drawable.ic_map_marker_fault
 
-    init {
-        preloadCache()
-    }
-
-    private fun preloadCache() {
+    fun preloadCache() {
         // pre-generates images for scale from 0 to 255 for all possible tint colors
         val tints = listOf(
             R.color.charger_100kw,
@@ -77,8 +78,11 @@ class ChargerIconGenerator(val context: Context, val factory: BitmapDescriptorFa
             for (highlight in listOf(false, true)) {
                 for (multi in listOf(false, true)) {
                     for (tint in tints) {
-                        for (scale in 0..20) {
-                            getBitmapDescriptor(tint, scale, 255, highlight, fault, multi)
+                        for (scale in 0..scaleResolution) {
+                            getBitmapDescriptor(
+                                tint, scale.toFloat() / scaleResolution,
+                                255, highlight, fault, multi
+                            )
                         }
                     }
                 }
@@ -88,13 +92,19 @@ class ChargerIconGenerator(val context: Context, val factory: BitmapDescriptorFa
 
     fun getBitmapDescriptor(
         @ColorRes tint: Int,
-        scale: Int = 20,
+        scale: Float = 1f,
         alpha: Int = 255,
         highlight: Boolean = false,
         fault: Boolean = false,
         multi: Boolean = false
     ): BitmapDescriptor? {
-        val data = BitmapData(tint, scale, alpha, highlight, fault, multi)
+        val data = BitmapData(
+            tint, (scale * scaleResolution).roundToInt(),
+            alpha,
+            if (scale == 1f) highlight else false,
+            if (scale == 1f) fault else false,
+            multi
+        )
         val cachedImg = cache[data]
         return if (cachedImg != null) {
             cachedImg
@@ -128,7 +138,7 @@ class ChargerIconGenerator(val context: Context, val factory: BitmapDescriptorFa
         )
         val canvas = Canvas(bm)
 
-        val scale = data.scale / 20f
+        val scale = data.scale.toFloat() / scaleResolution
         canvas.scale(
             scale,
             scale,

app/src/main/java/net/vonforst/evmap/ui/MarkerUtils.kt

@@ -36,11 +36,11 @@ class MarkerAnimator(val gen: ChargerIconGenerator) {
             animatingMarkers.remove(marker)
         }
 
-        val anim = ValueAnimator.ofInt(0, 20).apply {
+        val anim = ValueAnimator.ofFloat(0f, 1f).apply {
             duration = 250
             interpolator = LinearOutSlowInInterpolator()
             addUpdateListener { animationState ->
-                val scale = animationState.animatedValue as Int
+                val scale = animationState.animatedValue as Float
                 marker.setIcon(
                     gen.getBitmapDescriptor(
                         tint,
@@ -73,11 +73,11 @@ class MarkerAnimator(val gen: ChargerIconGenerator) {
             animatingMarkers.remove(marker)
         }
 
-        val anim = ValueAnimator.ofInt(20, 0).apply {
+        val anim = ValueAnimator.ofFloat(1f, 0f).apply {
             duration = 200
             interpolator = FastOutLinearInInterpolator()
             addUpdateListener { animationState ->
-                val scale = animationState.animatedValue as Int
+                val scale = animationState.animatedValue as Float
                 marker.setIcon(
                     gen.getBitmapDescriptor(
                         tint,

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

@@ -0,0 +1,27 @@
+<?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="wrap_content">
+
+    <ImageView
+        android:id="@+id/imageView2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:srcCompat="@drawable/ic_launcher_foreground" />
+
+    <TextView
+        android:id="@+id/textView14"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:text="@string/app_name"
+        android:textAppearance="@style/TextAppearance.MaterialComponents.Headline4"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toEndOf="@+id/imageView2"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,198 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:id="@+id/linearLayout4"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:paddingLeft="16dp"
+            android:paddingTop="16dp"
+            android:paddingRight="16dp"
+            android:paddingBottom="16dp">
+
+            <include
+                android:id="@+id/include"
+                layout="@layout/app_logo"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toTopOf="parent" />
+
+            <TextView
+                android:id="@+id/welcomeTitle"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:text="@string/welcome_to_evmap"
+                android:textAppearance="@style/TextAppearance.MaterialComponents.Headline6"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/include" />
+
+            <TextView
+                android:id="@+id/welcomeText1"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="8dp"
+                android:text="@string/welcome_1"
+                android:textAppearance="@style/TextAppearance.MaterialComponents.Body2"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/welcomeTitle" />
+
+
+            <ImageView
+                android:id="@+id/icon1"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                app:layout_constraintEnd_toEndOf="@+id/iconLabel1"
+                app:layout_constraintStart_toStartOf="@+id/iconLabel1"
+                app:layout_constraintTop_toBottomOf="@+id/welcomeText1"
+                app:srcCompat="@drawable/ic_map_marker_charging"
+                app:tint="@color/charger_low"
+                app:tintMode="multiply" />
+
+            <TextView
+                android:id="@+id/iconLabel1"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:text="&lt;11 kW"
+                android:textAppearance="@style/TextAppearance.MaterialComponents.Caption"
+                app:layout_constraintEnd_toStartOf="@+id/iconLabel2"
+                app:layout_constraintHorizontal_bias="0.5"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/icon1" />
+
+            <ImageView
+                android:id="@+id/icon2"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                app:layout_constraintEnd_toEndOf="@+id/iconLabel2"
+                app:layout_constraintStart_toStartOf="@+id/iconLabel2"
+                app:layout_constraintTop_toBottomOf="@+id/welcomeText1"
+                app:srcCompat="@drawable/ic_map_marker_charging"
+                app:tint="@color/charger_11kw"
+                app:tintMode="multiply" />
+
+            <TextView
+                android:id="@+id/iconLabel2"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:text="&gt;11 kW"
+                android:textAppearance="@style/TextAppearance.MaterialComponents.Caption"
+                app:layout_constraintEnd_toStartOf="@+id/iconLabel3"
+                app:layout_constraintHorizontal_bias="0.5"
+                app:layout_constraintStart_toEndOf="@+id/iconLabel1"
+                app:layout_constraintTop_toBottomOf="@+id/icon2" />
+
+            <ImageView
+                android:id="@+id/icon3"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                app:layout_constraintEnd_toEndOf="@+id/iconLabel3"
+                app:layout_constraintStart_toStartOf="@+id/iconLabel3"
+                app:layout_constraintTop_toBottomOf="@+id/welcomeText1"
+                app:srcCompat="@drawable/ic_map_marker_charging"
+                app:tint="@color/charger_20kw"
+                app:tintMode="multiply" />
+
+            <TextView
+                android:id="@+id/iconLabel3"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:text="&gt;20 kW"
+                android:textAppearance="@style/TextAppearance.MaterialComponents.Caption"
+                app:layout_constraintEnd_toStartOf="@+id/iconLabel4"
+                app:layout_constraintHorizontal_bias="0.5"
+                app:layout_constraintStart_toEndOf="@+id/iconLabel2"
+                app:layout_constraintTop_toBottomOf="@+id/icon3" />
+
+            <ImageView
+                android:id="@+id/icon4"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                app:layout_constraintEnd_toEndOf="@+id/iconLabel4"
+                app:layout_constraintStart_toStartOf="@+id/iconLabel4"
+                app:layout_constraintTop_toBottomOf="@+id/welcomeText1"
+                app:srcCompat="@drawable/ic_map_marker_charging"
+                app:tint="@color/charger_43kw"
+                app:tintMode="multiply" />
+
+            <TextView
+                android:id="@+id/iconLabel4"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:text="&gt;43 kW"
+                android:textAppearance="@style/TextAppearance.MaterialComponents.Caption"
+                app:layout_constraintEnd_toStartOf="@+id/iconLabel5"
+                app:layout_constraintHorizontal_bias="0.5"
+                app:layout_constraintStart_toEndOf="@+id/iconLabel3"
+                app:layout_constraintTop_toBottomOf="@+id/icon4" />
+
+            <ImageView
+                android:id="@+id/icon5"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                app:layout_constraintEnd_toEndOf="@+id/iconLabel5"
+                app:layout_constraintStart_toStartOf="@+id/iconLabel5"
+                app:layout_constraintTop_toBottomOf="@+id/welcomeText1"
+                app:srcCompat="@drawable/ic_map_marker_charging"
+                app:tint="@color/charger_100kw"
+                app:tintMode="multiply" />
+
+            <TextView
+                android:id="@+id/iconLabel5"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:text="&gt;100 kW"
+                android:textAppearance="@style/TextAppearance.MaterialComponents.Caption"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintHorizontal_bias="0.5"
+                app:layout_constraintStart_toEndOf="@+id/iconLabel4"
+                app:layout_constraintTop_toBottomOf="@+id/icon5" />
+
+            <TextView
+                android:id="@+id/welcomeText2"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="@string/welcome_2"
+                android:textAppearance="@style/TextAppearance.MaterialComponents.Body2"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/iconLabel1" />
+
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+    </ScrollView>
+
+    <Button
+        android:id="@+id/btnOk"
+        style="@style/Widget.MaterialComponents.Button.TextButton.Dialog"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/ok"
+        android:layout_marginEnd="16dp"
+        android:layout_marginBottom="8dp"
+        android:layout_gravity="end" />
+
+</LinearLayout>

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

@@ -88,7 +88,6 @@
             android:layout_width="match_parent"
             android:layout_height="@dimen/gallery_height_with_margin"
             android:background="?android:colorBackground"
-            android:fitsSystemWindows="true"
             app:layout_behavior="@string/BackDropBottomSheetBehavior">
 
             <androidx.recyclerview.widget.RecyclerView
@@ -124,7 +123,6 @@
             android:id="@+id/bottom_sheet"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-            android:fitsSystemWindows="true"
             android:fillViewport="true"
             android:orientation="vertical"
             app:bottomsheetbehavior_anchorPoint="@dimen/gallery_height"

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

@@ -1,28 +1,8 @@
 <?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"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:paddingTop="24dp">
 
-    <ImageView
-        android:id="@+id/imageView2"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:srcCompat="@drawable/ic_launcher_foreground" />
-
-    <TextView
-        android:id="@+id/textView14"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:text="@string/app_name"
-        android:textAppearance="@style/TextAppearance.MaterialComponents.Headline4"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintHorizontal_bias="0.5"
-        app:layout_constraintStart_toEndOf="@+id/imageView2"
-        app:layout_constraintTop_toTopOf="parent" />
-</androidx.constraintlayout.widget.ConstraintLayout>
+    <include layout="@layout/app_logo" />
+</FrameLayout>

app/src/main/res/navigation/nav_graph.xml

@@ -31,6 +31,9 @@
             app:enterAnim="@anim/fragment_fade_enter"
             app:popEnterAnim="@anim/fragment_fade_enter"
             app:popExitAnim="@anim/fragment_fade_exit" />
+        <action
+            android:id="@+id/action_map_to_welcome"
+            app:destination="@id/welcome" />
     </fragment>
     <fragment
         android:id="@+id/about"
@@ -75,6 +78,11 @@
         android:name="net.vonforst.evmap.fragment.DonateFragment"
         android:label="@string/donate"
         tools:layout="@layout/fragment_donate" />
+    <dialog
+        android:id="@+id/welcome"
+        android:name="net.vonforst.evmap.fragment.WelcomeDialogFragment"
+        android:label="@string/welcome_to_evmap"
+        tools:layout="@layout/dialog_welcome" />
     <chrome
         android:id="@+id/report_new_charger"
         app:url="@string/report_new_charger_url" />

app/src/main/res/transition/image_shared_element_transition.xml

@@ -3,7 +3,6 @@
     android:duration="375"
     android:interpolator="@android:interpolator/fast_out_slow_in"
     android:transitionOrdering="together">
-    <changeClipBounds />
-    <changeTransform />
+    <changeImageTransform />
     <changeBounds />
 </transitionSet>

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

@@ -146,6 +146,9 @@
     <string name="save_as_profile">Als Profil speichern</string>
     <string name="save_profile_enter_name">Geben Sie den Namen des Filterprofils ein:</string>
     <string name="filterprofiles_empty_state">Du hast noch keine Filterprofile gespeichert.</string>
+    <string name="welcome_to_evmap">Willkommen bei EVMap!</string>
+    <string name="welcome_1">Mit EVMap kannst du Ladestationen für Elektroautos in deiner Nähe finden. EVMap nutzt dafür die Community-gepflegte Datenbank von GoingElectric.de, die sich vor allem auf Europa und den deutschsprachigen Raum konzentriert. Über die Website GoingElectric.de kannst du selbst zum Verzeichnis beitragen.\n\nDie Ladestationen werden auf der Karte mit verschiedenen Farben angezeigt, die die maximale Ladeleistung angeben:</string>
+    <string name="welcome_2">EVMap ist kostenlos und Open Source. Du kannst bei GitHub zur Weiterentwicklung beitragen oder die Entwicklung mit Spenden unterstützen. Die entsprechenden Links findest du unter Über „EVMap” im Menü.</string>
     <plurals name="charge_cards_compatible_num">
         <item quantity="one">%d kompatibler Ladetarif</item>
         <item quantity="other">%d kompatible Ladetarife</item>

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

@@ -145,6 +145,9 @@
     <string name="save_as_profile">Save as profile</string>
     <string name="save_profile_enter_name">Enter the name of the filter profile:</string>
     <string name="filterprofiles_empty_state">You have not yet saved any filter profiles.</string>
+    <string name="welcome_to_evmap">Welcome to EVMap!</string>
+    <string name="welcome_1">Using EVMap, you can find electric vehicle chargers around you. EVMap uses the community-maintained database from GoingElectric.de, which focuses on chargers in Europe and the German-speaking countries. You can contribute to this database on the GoingElectric.de website.\n\nChargers are shown on the map in different colors, which correspond to their maximum charging power:</string>
+    <string name="welcome_2">EVMap is free and Open Source software. You can contribute to the development on GitHub or support me through donations. The corresponding links can be found under “About EVMap” in the menu.</string>
     <plurals name="charge_cards_compatible_num">
         <item quantity="one">%d compatible payment method</item>
         <item quantity="other">%d compatible payment methods</item>

fastlane/metadata/android/de-DE/changelogs/28.txt

@@ -0,0 +1,14 @@
+Frohes neues Jahr! 🎆
+
+Neue Features:
+- Sammlung von Filtern als Filterprofil speichern
+- Filter nach Kategorien (Restaurant, Hotel, Parkhaus etc.)
+- Maßstab wird auf der Karte angezeigt
+- Knopf zum Bearbeiten eines Ladepunkts bei GoingElectric
+- Willkommensdialog beim ersten Start
+
+Korrekturen:
+- Favoriten werden nach Abstand zur aktuellen Position sortiert
+- Stabilitätsverbesserung beim Laden der Verfügbarkeit (v.a. in der Favoritenliste)
+- App-Name "EV Map" -> "EVMap"
+- Abstürze behoben

fastlane/metadata/android/en-US/changelogs/28.txt

@@ -0,0 +1,14 @@
+Happy new year! 🎆
+
+New features:
+- save collections of filter settings as a filter profile
+- filter by categories (restaurant, hotel, car park etc.)
+- show scale on map
+- button to edit charger information on GoingElectric.de (only works when logged in)
+- welcome dialog on first start
+
+Fixes:
+- favorites list sorted by distance
+- improved stability of real-time availability info loading
+- app name "EV Map" -> "EVMap"
+- crashes fixed