Share: use ACTION_SEND when sharing a single track so apps like Signal are offered as share target (#2405).

src/androidTest/java/de/dennisguse/opentracks/share/ShareUtilsTest.java

@@ -0,0 +1,64 @@
+package de.dennisguse.opentracks.share;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.Objects;
+
+import de.dennisguse.opentracks.content.data.TestDataUtil;
+import de.dennisguse.opentracks.data.ContentProviderUtils;
+import de.dennisguse.opentracks.data.models.Track;
+
+public class ShareUtilsTest {
+
+    private final Context context = ApplicationProvider.getApplicationContext();
+    private ContentProviderUtils contentProviderUtils;
+
+    @Before
+    public void setUp() {
+        contentProviderUtils = new ContentProviderUtils(context);
+        contentProviderUtils.deleteAllTracks(context);
+    }
+
+    @Test
+    public void testSingleTrack() {
+        // given
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
+        contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId));
+
+        // when
+        Intent intent = ShareUtils.newShareFileIntent(context, trackId);
+
+        // then
+        assertEquals(Intent.ACTION_SEND, intent.getAction());
+        assertTrue(intent.getParcelableExtra(Intent.EXTRA_STREAM) instanceof Uri);
+    }
+
+    @Test
+    public void testMultipleTracks() {
+        // given
+        long random = System.currentTimeMillis();
+        Track.Id trackId1 = new Track.Id(random);
+        Track.Id trackId2 = new Track.Id(random + 1);
+        contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId1));
+        contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId2));
+
+        // when
+        Intent intent = ShareUtils.newShareFileIntent(context, trackId1, trackId2);
+
+        // then
+        assertEquals(Intent.ACTION_SEND_MULTIPLE, intent.getAction());
+        ArrayList<Uri> uris = intent.getParcelableArrayListExtra(Intent.EXTRA_STREAM);
+        assertEquals(2, Objects.requireNonNull(uris).size());
+    }
+}

src/main/java/de/dennisguse/opentracks/share/ShareUtils.java

@@ -62,6 +62,15 @@ public class ShareUtils {
             mime = uriAndMime.second;
         }
 
+        if (uris.size() == 1) {
+            return new Intent(Intent.ACTION_SEND)
+                    .setType(mime)
+                    .putExtra(Intent.EXTRA_STREAM, uris.get(0))
+                    .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+                    .putExtra(Intent.EXTRA_SUBJECT, context.getString(R.string.share_track_subject))
+                    .putExtra(Intent.EXTRA_TEXT, context.getString(R.string.share_track_share_file_body, trackDescription));
+        }
+
         return new Intent(Intent.ACTION_SEND_MULTIPLE)
                 .setType(mime)
                 .putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris)