|
|
| Line 33: |
Line 33: |
| | add(olf); | | add(olf); |
| | </pre> | | </pre> |
| − | 3.8. Open <code>MyApp</code> class and add menu items inside the constructor.
| |
| − | 3.9 Add view, add, edit and delete student options to the menu and set commands to execute:
| |
| − | <pre>
| |
| − | MyScreen _mainScreen = new MyScreen();
| |
| − | MenuItem view = new MenuItem(new StringProvider("View Student"), 100, 1);
| |
| − | view.setCommand(new Command(new ViewCommandHandler()));
| |
| − | _mainScreen.addMenuItem(view);
| |
| − |
| |
| − | MenuItem adds = new MenuItem(new StringProvider("Add Student"), 200, 2);
| |
| − | adds.setCommand(new Command(new AddCommandHandler()));
| |
| − | _mainScreen.addMenuItem(adds);
| |
| − |
| |
| − | MenuItem edit = new MenuItem(new StringProvider("Edit Student"), 300, 3);
| |
| − | edit.setCommand(new Command(new EditCommandHandler()));
| |
| − | _mainScreen.addMenuItem(edit);
| |
| − |
| |
| − | MenuItem delete = new MenuItem(new StringProvider("Delete Student"), 400, 4);
| |
| − | delete.setCommand(new Command(new DeleteCommandHandler()));
| |
| − | _mainScreen.addMenuItem(delete);
| |
| − |
| |
| − | pushScreen(_mainScreen);
| |
| − | </pre>
| |
| − | 3.10. Create inner classes to execute all commands:
| |
| − | <pre>
| |
| − | class ViewCommandHandler extends CommandHandler
| |
| − | {
| |
| − | public void execute(ReadOnlyCommandMetadata metadata, Object context){
| |
| − | Dialog.alert("View was selected");
| |
| − | }
| |
| − | }
| |
| − | class AddCommandHandler extends CommandHandler
| |
| − | {
| |
| − | public void execute(ReadOnlyCommandMetadata metadata, Object context){
| |
| − | Dialog.alert("Add was selected");
| |
| − | }
| |
| − | }
| |
| − | class EditCommandHandler extends CommandHandler
| |
| − | {
| |
| − | public void execute(ReadOnlyCommandMetadata metadata, Object context){
| |
| − | Dialog.alert("Edit was selected");
| |
| − | }
| |
| − | }
| |
| − | class DeleteCommandHandler extends CommandHandler
| |
| − | {
| |
| − | public void execute(ReadOnlyCommandMetadata metadata, Object context){
| |
| − | Dialog.alert("Delete was selected");
| |
| − | }
| |
| − | }
| |
| − | </pre>
| |
| − | 3.11. Now create the all other screen and implement menu commands.
| |
Revision as of 16:52, 17 March 2011
3. Add Elements to Main (First) Screen
3.1. Open MyScreen.java class.
3.2. Create class Student with the following fields:
private String firstName;
private String lastName;
private String email;
3.3. Add an array in MyScreen class to work with data.
3.4. The following elements are added to the MyScreen() constructor. Add a text field:
AutoTextEditField atf = new AutoTextEditField("Student Name: ", "");
3.5. Set the border and background for the text field:
Border roundedBorder = BorderFactory.createRoundedBorder(new XYEdges(5, 5, 5, 5), Border.STYLE_SOLID);
Background solidBackground = BackgroundFactory.createSolidBackground(Color.LIGHTSTEELBLUE);
atf.setBorder(roundedBorder);
atf.setBackground(solidBackground);
add(atf);
3.6. Add a search button:
ButtonField _bf=new ButtonField("Search");
add(_bf);
3.7. Add the array of students to the list field:
ObjectListField olf = new ObjectListField();
for (int i=0; i< ls.length; i++) {
olf.insert(i, ls[i].getFirstName() + " " + ls[i].getLastName());
}
add(olf);
