Implement the logon flow in your app.

1. In Android Studio, create a new project or open an existing one.
2. Ensure that AndroidManifest.xml contains the INTERNET permission:

   <uses-permission android:name="android.permission.INTERNET"/>

   and:

   <uses-permission android:name="com.sap.mobile.clientHub.CLIENTHUB_ACCESS_PERMISSION"/> 

   if ClientHub is used.
3. Copy jar and aar files into the libs folder of your project:
   • MobilePlace.aar
   • HttpConversation.aar
   • HttpConvAuthFlows.aar
   • Connectivity.aar
   • ClientLog.aar
   • SupportabilityFacade.aar
   • AfariaSLL.aar
   • Common.aar
   • CoreServices.aar
   • DataVaultLib.aar
   • perflib.jar
   • Request.aar
   • sap-e2etrace.jar
   • ClientHubSLL.aar
   • maflogoncore.aar
   • maflogger.aar
   • maflogonui.aar
   • mafuicomponents.aar
   • mafsettingscreen.aar
4. Update your build.gradle file:
   Add this line into the dependencies section of the build.gradle file:

   compile fileTree(include: ['*.jar'], dir: 'libs')

   After this line within the dependencies section, insert the following lines for each of the AAR files you copied into the libs folder:

   compile(name:'nameOfYourAARFileWithoutExtension', ext:'aar')

   For example:

   compile(name:' mafcalendar-1.210.0', ext:'aar')

   And so on. Insert a line for each AAR file.

5. Implement the necessary code:
   1. Create a new Activity class (or use an existing one) and add these fields:

      	final static int LOGON_SUCCESS = 101;
      	final static int LOGON_FAIL = 102;
      	final static int LOGON_SUCCESS_DEMO = 103;
      	final static int LOGON_FAIL_DEMO = 104;
      
      	private TextView label;
      	private LinearLayout root_layout;
      	private MAFButton actionButton;
      	private LogonUIFacade logonUIFacade;	
      	private final String APPLICATIONID = "com.sap.maf.test.adr.logonapp";
      

   2. Implement the following code in the onCreate() method (the activity_main.xml must contain a TextView element with the following attribute and attributevalue: android:id="@+id/label" ):

      	protected void onCreate(Bundle savedInstanceState) {
      		super.onCreate(savedInstanceState);
      
      		LayoutInflater inflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      		root_layout = (LinearLayout) inflater.inflate(R.layout.activity_main, null);
      		LayoutParams lr_lps = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
      		lr_lps.gravity = Gravity.CENTER;
      		label = (TextView) root_layout.findViewById(R.id.label);
      		label.setLayoutParams(lr_lps);
      		actionButton = new MAFButton(this, MAFButton.NORMAL_BUTTON);
      		actionButton.setLayoutParams(lr_lps);
      		root_layout.addView(actionButton);
      
      		// INIT LOGON
      		doLogon();
      
      	}
      

   3. Implement the doLogon() and doLogout() methods:

      private void doLogon() {
      		// present MAF Logon Screen
      		// get an instance of the LogonUIFacade
      		if (logonUIFacade == null) {
      			logonUIFacade = LogonUIFacade.getInstance();
      		}
      		// init LogonUIFacede
      		logonUIFacade.init(this, this, APPLICATIONID);
      		// ask LogonUIFacede to present the logon screen
      		// set the resulting view as the content view for this activity
      		setContentView(logonUIFacade.logon());
      
      	}
      
      	private void doLogout() {
      		//delete registered user
      		logonUIFacade.deleteUser();
      		//restart logon process
      		doLogon();
      	}
      

   4. Implement the LogonListener:

      public class MainActivity extends Activity implements LogonListener{
          ...
      }
      

   5. Implement methods of the LogonListener:

      // START OF LogonListener interface implementation
      	// ===========================================================
      	@Override
      	public void objectFromSecureStoreForKey() {
      
      	}
      
      	@Override
      	public void onApplicationSettingsUpdated() {
      
      	}
      
      	@Override
      	public void onBackendPasswordChanged(boolean arg0) {
      
      	}
      
      	@Override
      	public void onLogonFinished(String errorMessage, boolean isUserLoggedOn, LogonContext logonContext) {
      		// hides MAFLogonUI when logon finished and returns to main activity
      
      		boolean isDemoMode = logonContext.getLogonConnection().isDemoMode();
      
      		if (isDemoMode) {
      				// case LOGON_DEMO:
      				label.setText("LOGON Demo screen");
      				actionButton.setText("Logout");
      				actionButton.setOnClickListener(new OnClickListener() {
      
      					@Override
      					public void onClick(View v) {
      						doLogout();
      					}
      				});
      
      		} else {
      			if (isUserLoggedOn) {
      				// case LOGON_SUCCESS:
      				label.setText("LOGON SUCCESS");
      				actionButton.setText("Logout");
      				actionButton.setOnClickListener(new OnClickListener() {
      
      					@Override
      					public void onClick(View v) {
      						doLogout();
      					}
      				});
      			} else {
      				// case LOGON_FAIL:
      				label.setText("LOGON FAILED");
      				actionButton.setText("Retry to logon");
      				actionButton.setOnClickListener(new OnClickListener() {
      
      					@Override
      					public void onClick(View v) {
      						doLogon();
      					}
      				});
      
      			}
      		}
      		runOnUiThread(new Runnable() {
      			
      			@Override
      			public void run() {
      				setContentView(root_layout);
      			}
      		});
      	}
      
      	@Override
      	public void onSecureStorePasswordChanged(boolean arg0, String arg1) {
      
      	}
      
      	@Override
      	public void onUserDeleted() {
      		setContentView(logonUIFacade.logon());
      
      	}
      
      	@Override
      	public void registrationInfo() {
      
      	}
      	
      
      	@Override
      	public void onRefreshCertificate(boolean arg0, String arg1) {
      		
      	}
      	
      	// END OF LogonListener interface implementation
      	// ===========================================================