MIDP GUI

1. MIDP GUI

2. Displayable Screen Canvas GameCanvas Alert List Form TextBox Displayable hierarki

3. Displayable Screen High Level GUI Alert List Form TextBox High Level GUI

4. Commands 1 MIDlet implements CommandListener mainForm.setCommandListener(this); exitCmd = new Command(“Exit”, Command.EXIT, 2); loginCmd = new Command(“Login”, Command.SCREEN, 3); public void commandAction(Command c, Displayable d) {      String label = c.getLabel();      if(label.equals(”Exit")) {        destroyApp(true);      } else if(label.equals("Login")) { ....      }

5. Commands 2 MIDlet implements CommandListener mainForm.setCommandListener(this); exitCmd = new Command(“Exit”, Command.EXIT, 2); loginCmd = new Command(“Login”, Command.SCREEN, 3); public void commandAction(Command c, Displayable d) { if (d == mainScreen) { if (c == exitCmd) { .... } } else if (d == setupScreen) { if (c == loginCmd) { .... }

6. Forms 1 • En Form indeholder Items: • ChoiceGroup • CustomItem • DateField • Gauge • ImageItem • Spacer • StringItem • TextField

7. Forms 2 Form f = new Form("FormX"); TextField t = new TextField("TF1:", "abc", 10, TextField.ANY); f.append(t); TextField n = new TextField("TF2:", "123", 10, TextField.NUMERIC); f.append(n); t.setLayout(Item.LAYOUT_LEFT | Item.LAYOUT_TOP); n.setLayout(Item.LAYOUT_RIGHT | Item.LAYOUT_BOTTOM);

8. Forms 3 MIDlet implements CommandListener, ItemCommandListener, ItemStateListener { setCommandListener(this); public void commandAction(Command c, Displayable s) setItemCommandListener(this); public void commandAction(Command c, Item item) setItemStateListener(this); public void itemStateChanged(Item item)

9. Lists 1 List services = new List("Choose one", Choice.EXCLUSIVE)      services.append("Check Mail", null); services.append("Compose", null); services.append("Addresses", null); services.append("Options", null); services.append("Sign Out", null); display.setCurrent(services); Også Choice.MULTIPLE, Choice.IMPLICIT

10. Lists 2 public void commandAction(Command c, Displayable d) { if (c == List.SELECT_COMMAND && d == services) { int actionIndex = services.getSelectedIndex(); if (actionIndex < 0) return; String action = services.getString(actionIndex); ....

11. Grundregler Få visninger eller valgmuligheder pr skærm Minimer mængden af manuelt input Ingen detaljerede skærmdesign overvejelser Ensartet navngivning og virkemåde af “ens” kommandoer Enkelt og overskueligt flow mellem skærme Test på mange telefonmodeller