Construct uri and launch google maps navigation

app/src/main/java/com/example/busroute/PathToMaps.kt

@@ -1,7 +1,9 @@
 package com.example.busroute
 
+import android.content.Intent
 import android.location.Address
 import android.location.Geocoder
+import android.net.Uri
 import android.os.Bundle
 import android.provider.BaseColumns
 import android.util.Log
@@ -9,10 +11,12 @@ import android.view.View
 import android.widget.AdapterView
 import android.widget.AdapterView.OnItemSelectedListener
 import android.widget.ArrayAdapter
+import android.widget.Button
 import android.widget.Spinner
 import android.widget.TableLayout
 import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
+import com.example.busroute.DataClass.BusStop
 import com.example.busroute.DataClass.PathList
 import com.example.busroute.Database.DbHelper
 import com.example.busroute.Database.PathContract
@@ -27,6 +31,7 @@ class PathToMaps: AppCompatActivity() {
         val dbHelper = DbHelper(this)
         val db = dbHelper.readableDatabase
         val geocoder = Geocoder(this, Locale.getDefault())
+        val StopPoint = ArrayList<String>()
         setContentView(R.layout.select_path)
 
 
@@ -64,6 +69,7 @@ class PathToMaps: AppCompatActivity() {
                 id: Long
             ) {
                 stopTable.removeAllViews()
+                StopPoint.clear()
                 val selectedPath = parentView!!.selectedItem
                 if(selectedPath != null){
                     val cursor = db.rawQuery("SELECT * " +
@@ -80,6 +86,7 @@ class PathToMaps: AppCompatActivity() {
                             val geoResults: MutableList<Address>? = geocoder.getFromLocation(latitude, longitude, 1)
                             text.text = "$latitude | $longitude\r${geoResults?.get(0)?.getAddressLine(0)}\n"
                             stopTable.addView(text)
+                            StopPoint.add("$latitude|$longitude")
                         }
                     }
                 }
@@ -89,5 +96,26 @@ class PathToMaps: AppCompatActivity() {
                 // your code here
             }
         }
+
+
+        val openMapsButton = findViewById<Button>(R.id.open_maps)
+        openMapsButton.setOnClickListener {
+            val lastPoint = StopPoint.last().split("|")
+            var uri = "google.navigation:q=${lastPoint[0]},${lastPoint[1]}&waypoints="
+            StopPoint.forEach {
+                if(StopPoint.indexOf(it) < StopPoint.size -1){
+                    val position = it.split("|")
+                    uri += "${position[0]},${position[1]}"
+                    if(StopPoint.indexOf(it) < StopPoint.size -2){
+                        uri += "%7C"
+                    }
+                }
+            }
+
+            val mapIntentUri = Uri.parse(uri)
+            val mapIntent = Intent(Intent.ACTION_VIEW, mapIntentUri)
+            mapIntent.setPackage("com.google.android.apps.maps")
+            startActivity(mapIntent)
+        }
     }
 }

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

@@ -5,6 +5,11 @@
     <Spinner
         android:id="@+id/combo_path">
     </Spinner>
+    <Button
+        android:id="@+id/open_maps"
+        android:text="Lancer le trajet dans Maps">
+
+    </Button>
     <TableLayout
         android:id="@+id/stop_table"
         android:layout_width="match_parent"