Mobile Application Development

1. 02 Getting Started with
Mobile Programming
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2. Objectives
At the end of the lesson, the student should be able to:
●
Create a simple MIDlet
●
Create a Project in Netbeans
●
Create a MIDlet in Netbeans
●
Run a MIDlet on the emulator
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3. Getting Started
●
“Hello, World!” MIDlet
●
Using Netbeans and Mobility Pack
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4. MIDlet Life Cycle
new
destroyApp()
startApp() Paused
Destroyed
Active pauseApp()
destroyApp()
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5. Hello, world! MIDlet
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class HelloMidlet extends MIDlet
implements CommandListener {
Display display;
Command exitCommand =
new Command("Exit", Command.EXIT, 1);
Alert helloAlert;
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6. Hello, world! MIDlet
public HelloMidlet(){
helloAlert = new Alert(
"Hello MIDlet", "Hello, world!",
null, AlertType.INFO
);
helloAlert.setTimeout(Alert.FOREVER);
helloAlert.addCommand(exitCommand);
helloAlert.setCommandListener(this);
}
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7. Hello, world! MIDlet
public void startApp() {
if (display == null){
display = Display.getDisplay(this);
}
display.setCurrent(helloAlert);
}
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8. Hello, world! MIDlet
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
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9. Hello, world! MIDlet
public void commandAction(Command c, Displayable d){
if (c == exitCommand){
notifyDestroyed(); // Exit
}
}
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10. Mobile Application Devt
●
“Hello, World!” MIDlet
●
Using Netbeans and Mobility Pack
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11. Using Netbeans
●
Open Netbeans
●
Create a Project
●
Create a new MIDlet
●
Compile and Run the MIDlet
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12. Create a Project
●
File -> New Project
●
Category: Mobile
●
Project: Mobile Application
●
Specify Project Name
●
Select Platform
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13. Create a Project
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14. Create a MIDlet
●
File -> New File...
●
Category: MIDP
●
File Type: MIDlet
●
Specify MIDlet Name
●
Write the MIDlet code
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15. Create a MIDlet
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16. Create a MIDlet
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17. Specify the MIDlet's name
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18. Write the MIDlet Code
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19. Compile
and
Run
the
MIDlet
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20. Summary
●
“Hello, World!” MIDlet
●
Using Netbeans and Mobility Pack
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