Share track via intent

brouter-core/src/main/java/btools/router/RoutingEngine.java

@@ -63,6 +63,7 @@ public class RoutingEngine extends Thread
   private Object[] extract;
 
   private boolean directWeaving = !Boolean.getBoolean( "disableDirectWeaving" );
+  private String outfile;
 
   public RoutingEngine( String outfileBase, String logfileBase, File segmentDir,
           List<OsmNodeNamed> waypoints, RoutingContext rc )
@@ -185,6 +186,7 @@ public class RoutingEngine extends Thread
           track.writeGpx( filename );
           foundTrack = track;
           alternativeIndex = i;
+          outfile = filename;
         }
         else
         {
@@ -1369,4 +1371,7 @@ public class RoutingEngine extends Thread
 	  return terminated;
   }
 
+  public String getOutfile() {
+    return outfile;
+  }
 }

brouter-routing-app/src/main/AndroidManifest.xml

@@ -91,5 +91,15 @@
             android:exported="true"
             android:process=":brouter_service" />
 
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="btools.routing.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/filepaths" />
+        </provider>
+
     </application>
 </manifest>

brouter-routing-app/src/main/java/btools/routingapp/BRouterActivity.java

@@ -272,31 +272,49 @@ public class BRouterActivity extends AppCompatActivity implements ActivityCompat
         });
         return builder.create();
       case DIALOG_SHOWRESULT_ID:
-        String leftLabel = wpCount < 0 ? (wpCount != -2 ? "Exit" : "Help") : (wpCount == 0 ? "Select from" : "Select to/via");
-        String rightLabel = wpCount < 2 ? (wpCount == -3 ? "Help" : "Server-Mode") : "Calc Route";
+        // -3: Repeated route calculation
+        // -2: No waypoints?
+        // -1: Route calculated
+        // other: Select waypoints for route calculation
+        builder.setTitle(title).setMessage(errorMessage);
 
-        builder.setTitle(title).setMessage(errorMessage).setPositiveButton(leftLabel, new DialogInterface.OnClickListener() {
-          public void onClick(DialogInterface dialog, int id) {
-            if (wpCount == -2) {
-              showWaypointDatabaseHelp();
-            } else if (wpCount == -1 || wpCount == -3) {
-              finish();
-            } else {
-              mBRouterView.pickWaypoints();
-            }
-          }
-        }).setNegativeButton(rightLabel, new DialogInterface.OnClickListener() {
-          public void onClick(DialogInterface dialog, int id) {
-            if (wpCount == -3) {
-              showRepeatTimeoutHelp();
-            } else if (wpCount < 2) {
+        // Neutral button
+        if (wpCount == 0) {
+          builder.setNeutralButton("Server-Mode", (dialog, which) -> {
             mBRouterView.startConfigureService();
-            } else {
+          });
+        } else if (wpCount == -3) {
+          builder.setNeutralButton("Info", (dialog, which) -> {
+            showRepeatTimeoutHelp();
+          });
+        } else if (wpCount == -2) {
+          builder.setNeutralButton("Help", (dialog, which) -> {
+            showWaypointDatabaseHelp();
+          });
+        } else if (wpCount >= 2) {
+          builder.setNeutralButton("Calc Route", (dialog, which) -> {
             mBRouterView.finishWaypointSelection();
             mBRouterView.startProcessing(selectedProfile);
-            }
-          }
           });
+        }
+
+        // Positive button
+        if (wpCount == -3 || wpCount == -1) {
+          builder.setPositiveButton("Share GPX", (dialog, which) -> {
+            mBRouterView.shareTrack();
+          });
+        } else if (wpCount >= 0) {
+          String selectLabel = wpCount == 0 ? "Select from" : "Select to/via";
+          builder.setPositiveButton(selectLabel, (dialog, which) -> {
+            mBRouterView.pickWaypoints();
+          });
+        }
+
+        // Negative button
+        builder.setNegativeButton("Exit", (dialog, which) -> {
+          finish();
+        });
+
         return builder.create();
       case DIALOG_MODECONFIGOVERVIEW_ID:
         builder.setTitle("Success").setMessage(message).setPositiveButton("Exit", new DialogInterface.OnClickListener() {

brouter-routing-app/src/main/java/btools/routingapp/BRouterView.java

@@ -2,6 +2,7 @@ package btools.routingapp;
 
 import android.Manifest;
 import android.content.Context;
+import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.res.AssetManager;
 import android.graphics.Canvas;
@@ -13,6 +14,7 @@ import android.widget.Toast;
 
 import androidx.core.app.ActivityCompat;
 import androidx.core.content.ContextCompat;
+import androidx.core.content.FileProvider;
 
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
@@ -68,6 +70,7 @@ public class BRouterView extends View {
   private boolean waitingForMigration = false;
   private String rawTrackPath;
   private String oldMigrationPath;
+  private String trackOutfile;
   private boolean needsViaSelection;
   private boolean needsNogoSelection;
   private boolean needsWaypointSelection;
@@ -283,21 +286,19 @@ public class BRouterView extends View {
     }
   }
 
-  private void moveFile(String inputPath, String inputFile, String outputPath) {
-
+  private void copyFile(String inputPath, String inputFile, String outputPath) {
     InputStream in;
     OutputStream out;
-    try {
 
+    try {
       //create output directory if it doesn't exist
       File dir = new File(outputPath);
       if (!dir.exists()) {
         dir.mkdirs();
       }
 
-
-      in = new FileInputStream(inputPath + "/" + inputFile);
-      out = new FileOutputStream(outputPath + "/" + inputFile);
+      in = new FileInputStream(new File(inputPath, inputFile));
+      out = new FileOutputStream(new File(outputPath, inputFile));
 
       byte[] buffer = new byte[1024];
       int read;
@@ -310,16 +311,17 @@ public class BRouterView extends View {
       out.flush();
       out.close();
 
-      // delete the original file
-      new File(inputPath + "/" + inputFile).delete();
-
-
-    } catch (FileNotFoundException fnfe1) {
-      Log.e("tag", fnfe1.getMessage());
+    } catch (FileNotFoundException fileNotFoundException) {
+      Log.e("tag", fileNotFoundException.getMessage());
     } catch (Exception e) {
       Log.e("tag", e.getMessage());
     }
+  }
 
+  private void moveFile(String inputPath, String inputFile, String outputPath) {
+    copyFile(inputPath, inputFile, outputPath);
+    // delete the original file
+    new File(inputPath, inputFile).delete();
   }
 
   public boolean hasUpToDateLookups() {
@@ -707,6 +709,7 @@ public class BRouterView extends View {
             title += " / " + cr.getAlternativeIndex() + ". Alternative";
 
           ((BRouterActivity) getContext()).showResultMessage(title, result, rawTrackPath == null ? -1 : -3);
+          trackOutfile = cr.getOutfile();
         }
         cr = null;
         waitingForSelection = true;
@@ -848,4 +851,16 @@ public class BRouterView extends View {
     ((BRouterActivity) getContext()).showModeConfigOverview(msg.toString());
   }
 
+  public void shareTrack() {
+    File track = new File(trackOutfile);
+    // Copy file to cache to ensure FileProvider allows sharing the file
+    File cacheDir = getContext().getCacheDir();
+    copyFile(track.getParent(), track.getName(), cacheDir.getAbsolutePath());
+    Intent intent = new Intent();
+    intent.setDataAndType(FileProvider.getUriForFile(getContext(), "btools.routing.fileprovider", new File(cacheDir, track.getName())),
+      "application/gpx+xml");
+    intent.setAction(Intent.ACTION_VIEW);
+    intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+    getContext().startActivity(intent);
+  }
 }

brouter-routing-app/src/main/res/xml/filepaths.xml

@@ -0,0 +1,5 @@
+<paths>
+    <cache-path
+        name="cache"
+        path="." />
+</paths>