<NME> App.java
<BEF> package cgeo.geocaching.apps;

import cgeo.geocaching.models.Geocache;

public interface App {
    public boolean isInstalled();

    public String getName();

    int getId();
    boolean isUsableAsDefaultNavigationApp();

    @NonNull
    String getName();

    /**
     * Whether or not the app can be used with the given cache (may depend on properties of the cache).
     */
    boolean isEnabled(@NonNull Geocache cache);
}

<MSG> Merge pull request #1753 from marco-jacob/issue#1725

fixes #1725: no static maps apps as default nav app
<DFF> @@ -5,6 +5,8 @@ import cgeo.geocaching.cgCache;
 public interface App {
     public boolean isInstalled();
 
+    public boolean isDefaultNavigationApp();
+
     public String getName();
 
     int getId();

Merge pull request #1753 from marco-jacob/issue#1725