Rework openUrl function

- use preferBrowser only when needed (when opening charger URLs, which might otherwise open in EVMap itself)
- make preferBrowser work even if the default browser does not support Custom Tabs

#313

app/src/main/AndroidManifest.xml

@@ -25,6 +25,10 @@
         <intent>
             <action android:name="android.support.customtabs.action.CustomTabsService" />
         </intent>
+        <intent>
+            <action android:name="android.intent.action.VIEW" />
+            <data android:scheme="http" />
+        </intent>
 
         <package android:name="com.google.android.projection.gearhead" />
         <package android:name="com.google.android.apps.automotive.templates.host" />

app/src/main/java/net/vonforst/evmap/MapsActivity.kt

@@ -3,6 +3,8 @@ package net.vonforst.evmap
 import android.app.PendingIntent
 import android.content.ActivityNotFoundException
 import android.content.Intent
+import android.content.pm.PackageManager
+import android.content.pm.ResolveInfo
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
@@ -11,7 +13,6 @@ import android.view.View
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
 import androidx.browser.customtabs.CustomTabColorSchemeParams
-import androidx.browser.customtabs.CustomTabsClient
 import androidx.browser.customtabs.CustomTabsIntent
 import androidx.core.content.ContextCompat
 import androidx.core.splashscreen.SplashScreen
@@ -271,8 +272,7 @@ class MapsActivity : AppCompatActivity(),
         }
     }
 
-    fun openUrl(url: String, preferBrowser: Boolean = true) {
-        val pkg = CustomTabsClient.getPackageName(this, null)
+    fun openUrl(url: String, preferBrowser: Boolean = false) {
         val intent = CustomTabsIntent.Builder()
             .setDefaultColorSchemeParams(
                 CustomTabColorSchemeParams.Builder()
@@ -280,13 +280,46 @@ class MapsActivity : AppCompatActivity(),
                     .build()
             )
             .build()
-        pkg?.let {
-            // prefer to open URL in custom tab, even if native app
-            // available (such as EVMap itself)
-            if (preferBrowser) intent.intent.setPackage(pkg)
+
+        val uri = Uri.parse(url)
+        val viewIntent = Intent(Intent.ACTION_VIEW, uri)
+        if (preferBrowser) {
+            // EVMap may be set as default app for this link, but we want to open it in a browser
+            // try to find default web browser
+            val browserIntent = Intent(Intent.ACTION_VIEW, Uri.parse("http://"))
+            val resolveInfo =
+                packageManager.resolveActivity(browserIntent, PackageManager.MATCH_DEFAULT_ONLY)
+            val pkg = resolveInfo?.activityInfo?.packageName.takeIf { it != "android" }
+            if (pkg == null) {
+                // There is no default browser, fall back to app chooser
+                val chooserIntent = Intent.createChooser(viewIntent, null).apply {
+                    putExtra(Intent.EXTRA_EXCLUDE_COMPONENTS, arrayOf(componentName))
+                }
+                val targets: List<ResolveInfo> = packageManager.queryIntentActivities(
+                    viewIntent,
+                    PackageManager.MATCH_DEFAULT_ONLY
+                )
+
+                // add missing browsers (if EVMap is already set as default, Android might not find other browsers with the specific intent)
+                val browsers = packageManager.queryIntentActivities(
+                    browserIntent,
+                    PackageManager.MATCH_DEFAULT_ONLY
+                )
+                val extraIntents = browsers.filter { browser ->
+                    targets.find { it.activityInfo.packageName == browser.activityInfo.packageName } == null
+                }.map { browser ->
+                    Intent(Intent.ACTION_VIEW, uri).apply {
+                        setPackage(browser.activityInfo.packageName)
+                    }
+                }
+                chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, extraIntents.toTypedArray())
+                startActivity(chooserIntent)
+                return
+            }
+            intent.intent.setPackage(pkg)
         }
         try {
-            intent.launchUrl(this, Uri.parse(url))
+            intent.launchUrl(this, uri)
         } catch (e: ActivityNotFoundException) {
             val cb = fragmentCallback ?: return
             Snackbar.make(

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

@@ -407,7 +407,7 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
         binding.detailView.sourceButton.setOnClickListener {
             val charger = vm.charger.value?.data
             if (charger != null) {
-                (activity as? MapsActivity)?.openUrl(charger.url)
+                (activity as? MapsActivity)?.openUrl(charger.url, true)
             }
         }
         binding.detailView.btnChargeprice.setOnClickListener {
@@ -420,7 +420,7 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
                     extras
                 )
             } else {
-                (activity as? MapsActivity)?.openUrl(ChargepriceApi.getPoiUrl(charger), false)
+                (activity as? MapsActivity)?.openUrl(ChargepriceApi.getPoiUrl(charger))
             }
         }
         binding.detailView.btnChargerWebsite.setOnClickListener {
@@ -473,7 +473,7 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
                 R.id.menu_edit -> {
                     val charger = vm.charger.value?.data
                     if (charger?.editUrl != null) {
-                        (activity as? MapsActivity)?.openUrl(charger.editUrl)
+                        (activity as? MapsActivity)?.openUrl(charger.editUrl, true)
                         if (vm.apiId.value == "goingelectric") {
                             // instructions specific to GoingElectric
                             Toast.makeText(
@@ -827,7 +827,7 @@ class MapFragment : Fragment(), OnMapReadyCallback, MapsActivity.FragmentCallbac
                                 (activity as? MapsActivity)?.showLocation(charger)
                             }
                             R.drawable.ic_fault_report -> {
-                                (activity as? MapsActivity)?.openUrl(charger.url)
+                                (activity as? MapsActivity)?.openUrl(charger.url, true)
                             }
 
                             R.drawable.ic_payment -> {