Cleanup base directory selection, use Context.getExternalFilesDirs and request WRITE_EXTERNAL_STORAGE permission, use AndroidX and raise minSdkVersion to 14. Use File instead of plain Strings for paths in some places, use try-with-resources, and some other small improvements.

brouter-server/src/main/java/btools/server/ServiceContext.java

@@ -2,6 +2,7 @@ package btools.server;
 
 import java.util.List;
 import java.util.Map;
+import java.io.File;
 
 import btools.router.OsmNodeNamed;
 
@@ -10,7 +11,7 @@ import btools.router.OsmNodeNamed;
  */
 public class ServiceContext
 {
-  public String segmentDir;
+  public File segmentDir;
   public String profileDir;
   public String customProfileDir;
   public String sharedProfileDir;