Blackberry JAVA DEVELOPMENT ENVIRONMENT - - CRYPTOGRAPHIC SMART CARD DRIVER - DEVELOPMENT GUIDE Anleitung zur Fehlerbehebung PDF herunterladen (Seite 69)

3: Storing data

currentpasswordfield = new AutoTextEditField(

_resources.getString(FIELD_CURRENTPASSWORD), ““);

SeparatorField separator = new SeparatorField();

mainScreen.add(usernamefield);

mainScreen.add(passwordfield);

mainScreen.add(separator);

mainScreen.add(currentusernamefield);

mainScreen.add(currentpasswordfield);

pushScreen(mainScreen);

}

private final class UserMainScreen extends MainScreen

{

protected void makeMenu( Menu menu, int instance ) {

menu.add(saveItem);

menu.add(getItem);

super.makeMenu(menu, 0);

}

public void close() {

Dialog.alert(_resources.getString(APP_EXIT));

super.close();

}

Manage custom objects

Task Steps

Create an object to store

data.

1. Create a Vector object in which to store multiple objects.

private static Vector _data;

2. Create a single static PersistentObject.

PersistentObject store;

static {

store = PersistentStore.getPersistentObject( 0xdec6a67096f833cL );

//key is hash of test.samples.restaurants

_data = (Vector)store.getContents();

synchronized (store) {

if (_data == null) {

_data = new Vector();

store.setContents(_data);

store.commit();

}

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Blackberry JAVA DEVELOPMENT ENVIRONMENT - - CRYPTOGRAPHIC SMART CARD DRIVER - DEVELOPMENT GUIDE Anleitung zur Fehlerbehebung Seite 69