Check for map before opening link

app/src/main/java/org/tasks/data/Location.java

@@ -1,10 +1,19 @@
 package org.tasks.data;
 
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.net.Uri;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.widget.Toast;
+import androidx.annotation.Nullable;
 import androidx.room.Embedded;
 import androidx.room.Ignore;
 import java.io.Serializable;
+import java.util.List;
+import org.tasks.R;
 
 public class Location implements Serializable, Parcelable {
 
@@ -130,8 +139,19 @@ public class Location implements Serializable, Parcelable {
     return place.getDisplayAddress();
   }
 
-  public String getGeoUri() {
-    return place.getGeoUri();
+  public void open(@Nullable Context context) {
+    if (context == null) {
+      return;
+    }
+    Intent intent = new Intent(Intent.ACTION_VIEW);
+    intent.setData(Uri.parse(place.getGeoUri()));
+    PackageManager pm = context.getPackageManager();
+    List<ResolveInfo> resolveInfos = pm.queryIntentActivities(intent, 0);
+    if (resolveInfos.isEmpty()) {
+      Toast.makeText(context, R.string.no_application_found_link, Toast.LENGTH_SHORT).show();
+    } else {
+      context.startActivity(intent);
+    }
   }
 
   @Override

app/src/main/java/org/tasks/tasklist/ViewHolder.java

@@ -281,9 +281,7 @@ public class ViewHolder extends RecyclerView.ViewHolder {
     if (tag instanceof Filter) {
       callback.onClick((Filter) tag);
     } else if (tag instanceof Location) {
-      Intent intent = new Intent(Intent.ACTION_VIEW);
-      intent.setData(Uri.parse(((Location) tag).getGeoUri()));
-      context.startActivity(intent);
+      ((Location) tag).open(context);
     } else if (tag instanceof TaskContainer) {
       TaskContainer task = (TaskContainer) tag;
       callback.toggleSubtasks(task, !task.isCollapsed());

app/src/main/java/org/tasks/ui/LocationControlSet.java

@@ -148,7 +148,7 @@ public class LocationControlSet extends TaskEditControlFragment {
       chooseLocation();
     } else {
       List<Pair<Integer, Runnable>> options = new ArrayList<>();
-      options.add(Pair.create(R.string.open_map, this::openMap));
+      options.add(Pair.create(R.string.open_map, () -> location.open(getActivity())));
       if (!Strings.isNullOrEmpty(location.getPhone())) {
         options.add(Pair.create(R.string.action_call, this::call));
       }
@@ -220,12 +220,6 @@ public class LocationControlSet extends TaskEditControlFragment {
     return TAG;
   }
 
-  private void openMap() {
-    Intent intent = new Intent(Intent.ACTION_VIEW);
-    intent.setData(Uri.parse(location.getGeoUri()));
-    startActivity(intent);
-  }
-
   private void openWebsite() {
     startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(location.getUrl())));
   }

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

@@ -364,6 +364,7 @@ File %1$s contained %2$s.\n\n
   <string name="show_completed">Show completed</string>
   <string name="reverse">Reverse</string>
   <string name="no_application_found">No application found to open attachment</string>
+  <string name="no_application_found_link">No application found to handle link</string>
   <string name="add_attachment">Add attachment</string>
   <string name="take_a_picture">Take a picture</string>
   <string name="pick_from_gallery">Pick from gallery</string>