Edit with Branch Versioning: remove authentication handler (#577)

* amend readme

* hard code authentication in controller

* reorder authentication settings

Author: jenmerritt

editing/edit-with-branch-versioning/README.md

@@ -10,7 +10,7 @@ Workflows often progress in discrete stages, with each stage requiring the alloc
 
 ## How to use the sample
 
-Upon opening the sample, you will be prompted to enter credentials for the service (un: editor01 / pwd: editor01.password). Once loaded, the map will zoom to the extent of the feature layer. The current version is indicated in the top left corner of the map. You can create a new version by specifying the version information (name, access, and description) in the form in the top right corner, and then clicking "Create version". See the *Additional Information* section for restrictions on the version name.
+Once loaded, the map will zoom to the extent of the feature layer. The current version is indicated in the top left corner of the map. You can create a new version by specifying the version information (name, access, and description) in the form in the top right corner, and then clicking "Create version". See the *Additional Information* section for restrictions on the version name.
 
 Select a feature using the primary mouse button to edit an attribute and/or click again with the secondary mouse button to relocate the point.
 
@@ -44,10 +44,6 @@ The feature layer used in this sample is [Damage to commercial buildings](https:
 
 ## Additional information
 
-Credentials:
-- Username: editor01
-- Password: editor01.password
-
 The name of the version must meet the following criteria:
 
 1. Must not exceed 62 characters

editing/edit-with-branch-versioning/src/main/java/com/esri/samples/edit_with_branch_versioning/EditWithBranchVersioningController.java

@@ -47,8 +47,7 @@
 import com.esri.arcgisruntime.mapping.Viewpoint;
 import com.esri.arcgisruntime.mapping.view.IdentifyLayerResult;
 import com.esri.arcgisruntime.mapping.view.MapView;
-import com.esri.arcgisruntime.security.AuthenticationManager;
-import com.esri.arcgisruntime.security.DefaultAuthenticationChallengeHandler;
+import com.esri.arcgisruntime.security.UserCredential;
 
 public class EditWithBranchVersioningController {
 
@@ -91,13 +90,17 @@ public void initialize() {
         }
       });
 
-      // handle authentication for the service geodatabase
-      AuthenticationManager.setAuthenticationChallengeHandler(new DefaultAuthenticationChallengeHandler());
-
-      // create and load a service geodatabase
+      // create a service geodatabase
       serviceGeodatabase = new ServiceGeodatabase("https://sampleserver7.arcgisonline" +
         ".com/arcgis/rest/services/DamageAssessment/FeatureServer");
+
+      // set the user credentials required to authenticate with the service geodatabase
+      UserCredential userCredential = new UserCredential("editor01", "editor01.password");
+      serviceGeodatabase.setCredential(userCredential);
+
+      // load the service geodatabase
       serviceGeodatabase.loadAsync();
+
       serviceGeodatabase.addDoneLoadingListener(() -> {
         if (serviceGeodatabase.getLoadStatus() == LoadStatus.LOADED) {