Saturday, June 28, 2014

How to check AMX page is fully loaded or not

Sometimes you might requires to manipulate the HTML elements after the page is fully loaded. In HTML file it an be checked using window.onload or deviceready but same doesn't guarantees the appropriate ADF Mobile state.

In ADF mobile using showpagecomplete event on the handlePageShown callback function it can be checked.
        function handlePageShown() {
          console.log("Page is shown!");
        document.addEventListener("showpagecomplete", handlePageShown, false);
The showpagecomplete event guarantees the appropriate ADF Mobile state; other browser and third-party events, such as load and Cordova's deviceready, may not.

In my next article I will show the usage of showpagecomplete event with example.

Friday, June 27, 2014

ADF Mobile - Get network status dynamically

While working on ADF mobile application with offline/online capabilities, before calling webservices network has to be checked whether it is "connected" or "disconnected".

In my previous article Offline Data Synchronization for ADF Mobile, I was using the javascript to evaluate the network connectivity and store the connection status in pageFlowScope variable. But after subsequent checks pageFlowScope variable was not refreshing properly. Please see the oracle forum for more info,  ADF Mobile - Get network status.

Steps to check network status dynamically:-

1. Java Script to check the network status
  * Method to check the network status
  application.checkConnection = function () {
     var isConnected;
     var connectionType =;
     var states = {
     states[Connection.UNKNOWN] = 'Unknown connection';
     states[Connection.ETHERNET] = 'Ethernet connection';
     states[Connection.WIFI] = 'WiFi connection';
     states[Connection.CELL_2G] = 'Cell 2G connection';
     states[Connection.CELL_3G] = 'Cell 3G connection';
     states[Connection.CELL_4G] = 'Cell 4G connection';
     states[Connection.NONE] = 'No network connection';
     if (connectionType == Connection.NONE || connectionType == Connection.UNKNOWN) {
        isConnected = false;
     }else {
        isConnected = true;
     var obj = {connectionType : connectionType, isConnected : isConnected};
     return obj;
2. In managed bean call the application.checkConnection method
public void checkNetworkStatusAction(ActionEvent actionEvent) {
String networkDetails = (String)AdfmfContainerUtilities.invokeContainerJavaScriptFunction(AdfmfJavaUtilities.getFeatureName(),"application.checkConnection",new Object[] { });
   try {
        JSONObject obj = new JSONObject(networkDetails);
        String connectionType = (String)obj.getString("connectionType");
        boolean isConnected = (boolean)obj.getBoolean("isConnected");
    } catch (JSONException e) {
        throw new AdfException("Error while trying to connect to network", AdfException.ERROR);
Application screen looks like below when it deployed to Android device, When there is no network available in the device.

Enable the Mobile Data or Wireless and click on the Check button, Connection Type and Network Status will be displayed on the screen.

You can download the sample workspace from here
[Runs with Oracle JDeveloper]

Thursday, March 6, 2014

ADF Mobile - Popup at center of the window

Sometimes you may want to position amx:popup at the center of the window. At this moment, in there is no declarative solution for this usecase, In this post I'm sharing a code snippet that I noticed from Denis Tyrell(Oracle) for the same.

You can align the amx:showPopupBehavior with overlapTop property, this indicates how the popup should be aligned relative to the panelPage and then in the amx:popup code you can set the inlineStyle as below:
<amx:popup id="p1" autoDismiss="true"
    <amx:outputText value="Popup at center of the window" id="ot4"/>
Application screen looks like below when it deployed to IOS simulator.

Sunday, March 2, 2014

ADF Mobile - Reading custom properties from adf-config.xml

Take a scenario where you have integrated the push notification feature into mobile application and application needs to be shipped to client, to work push notification feature you need Sender ID for both Android and iOS and client want's to use their own Sender Id.

Next question will be where can we store the custom Sender Id in the application so that the client can edit. Credit goes to Srini Indla(Oracle), I have extracted the idea based on one of his forum reply and below is one of the way.

Custom values can be stored in add-config.xml file under <adf:adf-properties-child> tag, add-config.xml is used to configure application-level settings, including the Configuration Service parameters and read more on ADF Mobile Configuration Service Usage. The advantage of storing the properties and accessing it via the adf-confg.xml is that the values can be accessible using the EL expression at run time.

Below is a sample adf-confif.xml with custom properties:
<?xml version="1.0" encoding="ISO-8859-1" ?>
<adf-config xmlns="" xmlns:config=""
  <adf-adfm-config xmlns="">
    <defaults changeEventPolicy="ppr" useBindVarsForViewCriteriaLiterals="true"/>
        <config:Database jbo.locking.mode="optimistic"/>
  <adf:adf-properties-child xmlns="">
    <adf-property name="adfAppUID" value="MobileAdfConfig-1564"/>
    <adf-property name="username" value="Weblogic"/>
    <adf-property name="password" value="Weblogic1"/>
In Amx page you can access the above custom defined properties using EL expression.
For ex:  "#{applicationScope.configuration.username}"

Below is the sample code to access custom properties from adf-config.xml in managed bean.
ValueExpression userNameVe =
            AdfmfJavaUtilities.getValueExpression("#{applicationScope.configuration.username}", String.class);
String userName = (String)userNameVe.getValue(AdfmfJavaUtilities.getAdfELContext());

ValueExpression passwordVe =
            AdfmfJavaUtilities.getValueExpression("#{applicationScope.configuration.password}", String.class);
String password = (String)passwordVe.getValue(AdfmfJavaUtilities.getAdfELContext());

ADF Mobile - How to add a record using Constructor option

It’s been a while since my last post, but it doesn't mean that new discoveries were not happening. Well to be fair, I have been really busy with various responsibilities, I hope to re-take blogging again it into my daily routine. Now let’s get into business!

This article is a continuation of "ADF Mobile - Access Device Native SQLite Database to Store Data" and here I will try to explain a way of creating the record using the Constructor option with Bean DataControl.

You can download the sample workspace from here
[Runs with Oracle JDeveloper]

Implementation Steps:- 

Create an ADF Mobile Application, expand the ViewController project. Locate and expand the Application Sources folder, create a file and add the below code.
public class Departments {
    protected int departmentId;
    protected String departmentName;
    protected int locationId;
    private transient PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(this);

    public void addPropertyChangeListener(PropertyChangeListener l) {

    public void removePropertyChangeListener(PropertyChangeListener l) {

    public Departments() {

    public String getKey() {
        Integer i = new Integer(departmentId);
        return i.toString();

    public Departments(int departmentId, String departmentName, int locationId) {

    Departments(Departments newDepartments) {

    public void setDepartmentId(int departmentId) {
        int oldDepartmentId = this.departmentId;
        this.departmentId = departmentId;
        propertyChangeSupport.firePropertyChange("departmentId", oldDepartmentId, departmentId);

    public int getDepartmentId() {
        return departmentId;

    public void setLocationId(int locationId) {
        int oldLocationId = this.locationId;
        this.locationId = locationId;
        propertyChangeSupport.firePropertyChange("locationId", oldLocationId, locationId);

    public int getLocationId() {
        return locationId;

    public void setDepartmentName(String departmentName) {
        String oldDepartmentName = this.departmentName;
        this.departmentName = departmentName;
        propertyChangeSupport.firePropertyChange("departmentName", oldDepartmentName, departmentName);

    public String getDepartmentName() {
        return departmentName;
Create file and add the below code. Create DataControl based on file.
public class DepartmentsList {
    private static List s_departments = null;
    private Departments editDepartment = new Departments();
    private transient ProviderChangeSupport providerChangeSupport = new ProviderChangeSupport(this);

    private transient PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(this);

    public void addPropertyChangeListener(PropertyChangeListener l) {

    public void removePropertyChangeListener(PropertyChangeListener l) {

    public void addProviderChangeListener(ProviderChangeListener l) {

    public void removeProviderChangeListener(ProviderChangeListener l) {

    public DepartmentsList() {
        if (s_departments == null) {
            s_departments = new ArrayList();

    public void Execute() {
        Trace.log(Utility.ApplicationLogger, Level.INFO, DepartmentsList.class, "Execute",
                  "!!!!!!!!!!!!!!!!!In DEPARTMENT Execute!!!!!!!!!!!!!!!!!!!!!!!!!");
        try {
            Connection conn = DBConnectionFactory.getConnection();
            PreparedStatement stat = conn.prepareStatement("SELECT * from DEPARTMENTS ORDER BY DEPARTMENT_NAME");
            ResultSet rs = stat.executeQuery();
            Trace.log(Utility.ApplicationLogger, Level.INFO, DepartmentsList.class, "Execute",
                      "!!!!!!!!!!!!!!!!!Query Executed!!!!!!!!!!!!!!!!!!!!!!!!!");
            while ( {
                Trace.log(Utility.ApplicationLogger, Level.INFO, DepartmentsList.class, "Execute",
                          "!!!!!!!!!!!!!!!!!Adding Department!!!!!!!!!!!!!!!!!!!!!!!!!");
                int departmentId = rs.getInt("DEPARTMENT_ID");
                String departmentName = rs.getString("DEPARTMENT_NAME");
                int locationId = rs.getInt("LOCATION_ID");
                s_departments.add(new Departments(departmentId, departmentName, locationId));
        } catch (SQLException e) {
        } catch (Exception e) {

    public Departments[] getDepartments() {
        Departments d[] = null;
        d = (Departments[])s_departments.toArray(new Departments[s_departments.size()]);
        return d;

    public void persistDepartments(int departmentId, String departmentName, int locationId) {
        Connection conn;
        try {
            conn = DBConnectionFactory.getConnection();
            String insertSQL = "Insert into DEPARTMENTS (DEPARTMENT_ID,DEPARTMENT_NAME,LOCATION_ID) values (?,?,?)";
            PreparedStatement pStmt = conn.prepareStatement(insertSQL);
            pStmt.setInt(1, departmentId);
            pStmt.setString(2, departmentName);
            pStmt.setInt(3, locationId);


            s_departments.add(0, editDepartment);
            providerChangeSupport.fireProviderCreate("departments", editDepartment.getKey(), editDepartment);
        } catch (Exception e) {
In below section I will not show all screen creation, here I'm interested in DeptAdd.amx page. Take a look at the DepartmentList data control in the below image, drag and drop DepartmentsList->Constructors->>Departments as ADF Mobile Parameter Form.   

Next drag and drop DepartmentsList->persistDepartment->Method as ADF Mobile Button and in Edit Action Binding window map the parameter binding values as shown below.

Application screen looks like below when it deployed to IOS simulator. Displaying the Departments List is fetched from SQLite, click on the Add button to create new department record.

Enter the details in the department form and click on Save button. The Department information will saved to the database and moved to Dept List screen and department list will get updated by newly added department record.